add a bunch of code and a ton of stub files for later

1 files changed, 4858 insertions, 0 deletions

diff --git a/compiler_and_linker/unsorted/InstrSelection.c b/compiler_and_linker/unsorted/InstrSelection.c
new file mode 100644
index 0000000..ac60baf
--- /dev/null
+++ b/compiler_and_linker/unsorted/InstrSelection.c
@@ -0,0 +1,4858 @@
+#include "compiler/InstrSelection.h"
+#include "compiler/CError.h"
+#include "compiler/CInt64.h"
+#include "compiler/CMachine.h"
+#include "compiler/CParser.h"
+#include "compiler/CodeGen.h"
+#include "compiler/Operands.h"
+#include "compiler/PCode.h"
+#include "compiler/PCodeInfo.h"
+#include "compiler/PCodeUtilities.h"
+#include "compiler/RegisterInfo.h"
+#include "compiler/TOC.h"
+#include "compiler/CompilerTools.h"
+#include "compiler/enode.h"
+#include "compiler/objects.h"
+#include "compiler/types.h"
+
+// TODO: move me
+extern void move_block(Operand *, Operand *, SInt32, SInt32);
+
+PrecomputedOperand *precomputedoperands;
+void (*cgdispatch[MAXEXPR + 1])(ENode *, short, short, Operand *);
+
+// forward decls
+static int ispowerof2(SInt32 val);
+static void binary_immediate(Opcode opcode, ENode *left, SInt32 value, short outputReg, Operand *output);
+static void shift_left_immediate(ENode *expr, short shift, short negate, short outputReg, Operand *output);
+static void shift_right_immediate(ENode *expr, Type *type, short shift, short outputReg, Operand *output);
+static void or_xor_immediate(Opcode opcode, ENode *expr, SInt32 value, short outputReg, Operand *output);
+static void signed_divide_by_power_of_2(ENode *expr, int shift, int negate, short outputReg, Operand *output);
+static void signed_mod_by_power_of_2(ENode *expr, int shift, int negate, short outputReg, Operand *output);
+static void fp_binary_operator(Opcode opcode, ENode *left, ENode *right, short outputReg, Operand *output);
+static void logical_expression_nobranch(ENode *cond, Boolean invert, Operand *output);
+static void shift_and_mask(ENode *expr, short a, short b, short c, short outputReg, Operand *output);
+static ENodeType invert_relop(ENodeType nt);
+
+#define IS_INT_CONST(node) ( ENODE_IS((node), EINTCONST) && IS_TYPE_INT((node)->rtype) && (node)->rtype->size <= 4 )
+#define IS_INT_CONST_ZERO(node) ( IS_INT_CONST(node) && (node)->data.intval.lo == 0 )
+
+void init_cgdispatch(void) {
+    ENodeType t;
+
+    for (t = 0; t <= MAXEXPR; t++)
+        cgdispatch[t] = gen_UNEXPECTED;
+
+    cgdispatch[EPOSTINC] = gen_POSTINCDEC;
+    cgdispatch[EPOSTDEC] = gen_POSTINCDEC;
+    cgdispatch[EINDIRECT] = gen_INDIRECT;
+    cgdispatch[EMONMIN] = gen_MONMIN;
+    cgdispatch[EBINNOT] = gen_BINNOT;
+    cgdispatch[ELOGNOT] = gen_LOGICAL;
+    cgdispatch[EFORCELOAD] = gen_FORCELOAD;
+    cgdispatch[EMUL] = gen_MUL;
+    cgdispatch[EDIV] = gen_DIV;
+    cgdispatch[EMODULO] = gen_MODULO;
+    cgdispatch[EADD] = gen_ADD;
+    cgdispatch[ESUB] = gen_SUB;
+    cgdispatch[ESHL] = gen_SHL;
+    cgdispatch[ESHR] = gen_SHR;
+    cgdispatch[ELESS] = gen_COMPARE;
+    cgdispatch[EGREATER] = gen_COMPARE;
+    cgdispatch[ELESSEQU] = gen_COMPARE;
+    cgdispatch[EGREATEREQU] = gen_COMPARE;
+    cgdispatch[EEQU] = gen_COMPARE;
+    cgdispatch[ENOTEQU] = gen_COMPARE;
+    cgdispatch[EAND] = gen_AND;
+    cgdispatch[EXOR] = gen_XOR;
+    cgdispatch[EOR] = gen_OR;
+    cgdispatch[ELAND] = gen_LOGICAL;
+    cgdispatch[ELOR] = gen_LOGICAL;
+    cgdispatch[EASS] = gen_ASS;
+    cgdispatch[ECOMMA] = gen_COMMA;
+    cgdispatch[ETYPCON] = gen_TYPCON;
+    cgdispatch[EBITFIELD] = gen_BITFIELD;
+    cgdispatch[EINTCONST] = gen_INTCONST;
+    cgdispatch[EFLOATCONST] = gen_FLOATCONST;
+    cgdispatch[ESTRINGCONST] = gen_STRINGCONST;
+    cgdispatch[ECOND] = gen_COND;
+    cgdispatch[EFUNCCALL] = gen_FUNCCALL;
+    cgdispatch[EFUNCCALLP] = gen_FUNCCALL;
+    cgdispatch[EOBJREF] = gen_OBJREF;
+    cgdispatch[ENULLCHECK] = gen_NULLCHECK;
+    cgdispatch[EPRECOMP] = gen_PRECOMP;
+    cgdispatch[EDEFINE] = gen_DEFINE;
+    cgdispatch[EREUSE] = gen_REUSE;
+    cgdispatch[EVECTOR128CONST] = gen_VECTOR128CONST;
+    cgdispatch[ECONDASS] = gen_CONDASS;
+}
+
+void gen_DEFINE(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    Operand *op;
+
+    if (!expr->data.diadic.right) {
+        op = lalloc(sizeof(Operand));
+        memclrw(op, sizeof(Operand));
+        expr->data.diadic.right = (ENode *) op;
+        GEN_NODE(expr->data.diadic.left, op);
+    }
+
+    op = (Operand *) expr->data.diadic.right;
+    *output = *op;
+}
+
+void gen_REUSE(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *inner = expr->data.monadic;
+#line 250
+    CError_ASSERT(ENODE_IS(inner, EDEFINE));
+    gen_DEFINE(inner, outputReg, outputRegHi, output);
+}
+
+void gen_POSTINCDEC(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    TypeBitfield *tbitfield;
+    ENode *inner;
+    Type *type;
+    Operand a;
+    Operand b;
+    Operand c;
+    Float fval;
+    int objReg;
+    int constReg;
+    int finalReg;
+    SInt32 incval;
+
+    inner = expr->data.monadic->data.monadic;
+    type = expr->rtype;
+    tbitfield = NULL;
+
+    memclrw(&a, sizeof(Operand));
+    memclrw(&b, sizeof(Operand));
+    memclrw(&c, sizeof(Operand));
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_POSTINCDEC(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (IS_TYPE_FLOAT(type)) {
+        if (ENODE_IS(inner, EOBJREF) && (objReg = OBJECT_REG(inner->data.objref))) {
+            output->optype = OpndType_FPR;
+            output->reg = (outputReg && outputReg != objReg) ? outputReg : ALLOC_FPR();
+            emitpcode(PC_FMR, output->reg, objReg);
+            fval = one_point_zero;
+            load_floating_constant(constReg = ALLOC_FPR(), type, &fval.value);
+
+            if (ENODE_IS(expr, EPOSTINC)) {
+                emitpcode((type->size == 4) ? PC_FADDS : PC_FADD, objReg, objReg, constReg);
+            } else {
+                emitpcode((type->size == 4) ? PC_FSUBS : PC_FSUB, objReg, objReg, constReg);
+            }
+        } else {
+            GEN_NODE(inner, &a);
+            indirect(&a, inner);
+            b = a;
+            ENSURE_FPR(&b, type, 0);
+
+            output->optype = OpndType_FPR;
+            output->reg = ALLOC_FPR();
+            emitpcode(PC_FMR, output->reg, b.reg);
+
+            fval = one_point_zero;
+            load_floating_constant(constReg = ALLOC_FPR(), type, &fval.value);
+
+            finalReg = ALLOC_FPR();
+            if (ENODE_IS(expr, EPOSTINC))
+                emitpcode((type->size == 4) ? PC_FADDS : PC_FADD, finalReg, b.reg, constReg);
+            else
+                emitpcode((type->size == 4) ? PC_FSUBS : PC_FSUB, finalReg, b.reg, constReg);
+
+            store_fp(finalReg, &a, type);
+        }
+    } else {
+        if (IS_TYPE_POINTER(type)) {
+            if (ENODE_IS(expr, EPOSTINC))
+                incval = TPTR_TARGET(type)->size;
+            else
+                incval = -TPTR_TARGET(type)->size;
+        } else {
+            if (ENODE_IS(expr, EPOSTINC))
+                incval = 1;
+            else
+                incval = -1;
+        }
+
+        if (ENODE_IS(inner, EOBJREF) && (objReg = OBJECT_REG(inner->data.objref))) {
+            output->optype = OpndType_GPR;
+            output->reg = (outputReg && outputReg != objReg) ? outputReg : ALLOC_GPR();
+            emitpcode(PC_MR, output->reg, objReg);
+            add_register_immediate(objReg, objReg, incval);
+        } else {
+            if (ENODE_IS(inner, EBITFIELD)) {
+                tbitfield = TYPE_BITFIELD(TPTR_TARGET(inner));
+                inner = inner->data.monadic;
+            }
+            GEN_NODE(inner, &a);
+            indirect(&a, inner);
+            b = a;
+            ENSURE_GPR(&b, type, 0);
+
+            if (tbitfield) {
+                c = b;
+                extract_bitfield(&c, tbitfield, 0, &b);
+            }
+            output->optype = OpndType_GPR;
+
+            output->reg = ALLOC_GPR();
+            emitpcode(PC_MR, output->reg, b.reg);
+
+            finalReg = ALLOC_GPR();
+            add_register_immediate(finalReg, b.reg, incval);
+
+            if (tbitfield) {
+                insert_bitfield(finalReg, &c, tbitfield);
+                finalReg = c.reg;
+            }
+
+            store(finalReg, &a, type);
+        }
+    }
+}
+
+void gen_INDIRECT(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    Type *type;
+    ENode *inner;
+    VarInfo *vi;
+    SInt32 postincvalue;
+    Operand op;
+
+    type = expr->rtype;
+    inner = expr->data.monadic;
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_INDIRECT(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    memclrw(&op, sizeof(Operand));
+    if (ENODE_IS(inner, EOBJREF) && OBJECT_REG(inner->data.objref)) {
+        vi = Registers_GetVarInfo(inner->data.objref);
+        switch (vi->rclass) {
+            case RegClass_GPR:
+                output->optype = OpndType_GPR;
+                break;
+            case RegClass_FPR:
+                output->optype = OpndType_FPR;
+                break;
+            case RegClass_VR:
+                output->optype = OpndType_VR;
+                break;
+            case RegClass_CRFIELD:
+                output->optype = OpndType_CRField;
+                break;
+            default:
+#line 456
+                CError_FATAL();
+        }
+        output->reg = vi->reg;
+        output->object = NULL;
+        return;
+    }
+
+    if (ENODE_IS(inner, EBITFIELD)) {
+        GEN_NODE(inner->data.monadic, &op);
+        indirect(&op, expr);
+        ENSURE_GPR(&op, type, 0);
+        extract_bitfield(&op, TYPE_BITFIELD(inner->rtype), outputReg, output);
+        return;
+    }
+
+    if (ispostincrementopportunity(inner, &op, &postincvalue) && (TYPE_FITS_IN_REGISTER(type) || IS_TYPE_FLOAT(type) || IS_TYPE_VECTOR(type))) {
+        indirect(&op, expr);
+        *output = op;
+        if (TYPE_FITS_IN_REGISTER(type)) {
+            ENSURE_GPR(output, type, outputReg);
+        } else if (IS_TYPE_FLOAT(type)) {
+            ENSURE_FPR(output, type, outputReg);
+        } else {
+            ENSURE_VR(output, type, outputReg);
+        }
+
+        add_register_immediate(op.reg, op.reg, postincvalue);
+        return;
+    }
+
+    GEN_NODE(inner, output);
+    indirect(output, expr);
+}
+
+void gen_MONMIN(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *inner;
+    Type *type;
+    ENode *scan;
+
+    inner = expr->data.monadic;
+    type = expr->rtype;
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_MONMIN(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (IS_TYPE_FLOAT(type)) {
+        if (ENODE_IS(inner, EADD) && ENODE_IS(inner->data.diadic.left, EMUL) && copts.fp_contract) {
+            fp_multiply_add(
+                    (type->size == 4) ? PC_FNMADDS : PC_FNMADD,
+                    inner->data.diadic.left->data.diadic.left,
+                    inner->data.diadic.left->data.diadic.right,
+                    inner->data.diadic.right,
+                    outputReg,
+                    output);
+        } else if (ENODE_IS(inner, EADD) && ENODE_IS(inner->data.diadic.right, EMUL) && copts.fp_contract) {
+            fp_multiply_add(
+                    (type->size == 4) ? PC_FNMADDS : PC_FNMADD,
+                    inner->data.diadic.right->data.diadic.left,
+                    inner->data.diadic.right->data.diadic.right,
+                    inner->data.diadic.left,
+                    outputReg,
+                    output);
+        } else if (ENODE_IS(inner, ESUB) && ENODE_IS(inner->data.diadic.left, EMUL) && copts.fp_contract) {
+            fp_multiply_add(
+                    (type->size == 4) ? PC_FNMSUBS : PC_FNMSUB,
+                    inner->data.diadic.left->data.diadic.left,
+                    inner->data.diadic.left->data.diadic.right,
+                    inner->data.diadic.right,
+                    outputReg,
+                    output);
+        } else {
+            fp_unary_operator(PC_FNEG, inner, outputReg, output);
+        }
+        return;
+    }
+
+    scan = inner;
+    while (ENODE_IS(scan, ETYPCON) && IS_TYPE_INT_OR_ENUM(type) && !is_unsigned(type))
+        scan = scan->data.monadic;
+
+    switch (scan->type) {
+        case ELESS:
+        case EGREATER:
+        case ELESSEQU:
+        case EGREATEREQU:
+        case EEQU:
+        case ENOTEQU:
+            if (TYPE_FITS_IN_REGISTER(scan->data.diadic.left->rtype) && TYPE_FITS_IN_REGISTER(scan->data.diadic.right->rtype)) {
+                gen_negated_condition_gpr(scan, output, outputReg);
+                return;
+            }
+    }
+    unary_operator(PC_NEG, inner, outputReg, output);
+}
+
+void gen_BINNOT(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *inner;
+    Type *type;
+
+    inner = expr->data.monadic;
+    type = expr->rtype;
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_BINNOT(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (ENODE_IS(inner, EAND))
+        binary_operator(PC_NAND, inner->data.diadic.left, inner->data.diadic.right, outputReg, output);
+    else if (ENODE_IS(inner, EOR))
+        binary_operator(PC_NOR, inner->data.diadic.left, inner->data.diadic.right, outputReg, output);
+    else if (ENODE_IS(inner, EXOR))
+        binary_operator(PC_EQV, inner->data.diadic.left, inner->data.diadic.right, outputReg, output);
+    else
+        unary_operator(PC_NOT, inner, outputReg, output);
+}
+
+void gen_FORCELOAD(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *inner;
+
+    inner = expr->data.monadic;
+    GEN_NODE(inner, output);
+
+    if (IS_TYPE_FLOAT(inner->rtype)) {
+        ENSURE_FPR(output, inner->rtype, outputReg);
+    } else if (IS_TYPE_VECTOR(inner->rtype)) {
+        ENSURE_VR(output, inner->rtype, outputReg);
+    } else if (TYPE_FITS_IN_REGISTER(inner->rtype)) {
+        if (TYPE_IS_8BYTES(inner->rtype))
+            coerce_to_register_pair(output, inner->rtype, outputReg, outputRegHi);
+        else
+            ENSURE_GPR(output, inner->rtype, outputReg);
+    } else if (!IS_TYPE_VOID(inner->rtype)) {
+#line 681
+        CError_FATAL();
+    }
+}
+
+void gen_MUL(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *left;
+    ENode *right;
+    Type *type;
+    int tmp;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    type = expr->rtype;
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_MUL(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (IS_TYPE_FLOAT(type)) {
+        fp_binary_operator((type->size == 4) ? PC_FMULS : PC_FMUL, left, right, outputReg, output);
+        return;
+    }
+
+    if (ENODE_IS(right, EINTCONST) && (tmp = ispowerof2(right->data.intval.lo))) {
+        shift_left_immediate(left, tmp, 0, outputReg, output);
+    } else if (ENODE_IS(right, EINTCONST) && (tmp = ispowerof2(-right->data.intval.lo))) {
+        shift_left_immediate(left, tmp, 1, outputReg, output);
+    } else if (ENODE_IS(left, EINTCONST) && (tmp = ispowerof2(left->data.intval.lo))) {
+        shift_left_immediate(right, tmp, 0, outputReg, output);
+    } else if (ENODE_IS(left, EINTCONST) && (tmp = ispowerof2(-left->data.intval.lo))) {
+        shift_left_immediate(right, tmp, 1, outputReg, output);
+    } else if (ENODE_IS(right, EINTCONST) && FITS_IN_SHORT(right->data.intval.lo)) {
+        binary_immediate(PC_MULLI, left, right->data.intval.lo, outputReg, output);
+    } else if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT(left->data.intval.lo)) {
+        binary_immediate(PC_MULLI, right, left->data.intval.lo, outputReg, output);
+    } else {
+        binary_operator(PC_MULLW, left, right, outputReg, output);
+    }
+}
+
+struct ms {
+    SInt32 m;
+    int s;
+};
+static void create_signed_magic(SInt32 val, struct ms *output) {
+    // PowerPC CWG page 57-58
+    int p;
+    UInt32 ad, anc, delta, q1, r1, q2, r2, t;
+
+    ad = abs(val);
+    t = 0x80000000U + ((UInt32) val >> 31);
+    anc = t - 1 - t % ad;
+    p = 31;
+    q1 = 0x80000000U / anc;
+    r1 = 0x80000000U - q1 * anc;
+    q2 = 0x80000000U / ad;
+    r2 = 0x80000000U - q2 * ad;
+
+    do {
+        p = p + 1;
+        q1 = 2 * q1;
+        r1 = 2 * r1;
+        if (r1 >= anc) {
+            q1 = q1 + 1;
+            r1 = r1 - anc;
+        }
+        q2 = 2 * q2;
+        r2 = 2 * r2;
+        if (r2 >= ad) {
+            q2 = q2 + 1;
+            r2 = r2 - ad;
+        }
+        delta = ad - r2;
+    } while (q1 < delta || (q1 == delta && r1 == 0));
+
+    // after loop
+    output->m = q2 + 1;
+    if (val < 0)
+        output->m = -output->m;
+    output->s = p - 32;
+}
+
+struct mu {
+    UInt32 m;
+    int a;
+    int s;
+};
+static void create_unsigned_magic(UInt32 val, struct mu *output) {
+    // PowerPC CWG page 58-59
+    int p;
+    UInt32 nc, delta, q1, r1, q2, r2;
+
+    output->a = 0;
+    nc = - 1 - (-val) % val;
+    p = 31;
+    q1 = 0x80000000U / nc;
+    r1 = 0x80000000U - q1 * nc;
+    q2 = 0x7FFFFFFFU / val;
+    r2 = 0x7FFFFFFFU - q2 * val;
+    do {
+        p = p + 1;
+        if (r1 >= nc - r1) {
+            q1 = 2 * q1 + 1;
+            r1 = 2 * r1 - nc;
+        } else {
+            q1 = 2 * q1;
+            r1 = 2 * r1;
+        }
+        if (r2 + 1 >= val - r2) {
+            if (q2 >= 0x7FFFFFFFU)
+                output->a = 1;
+            q2 = 2 * q2 + 1;
+            r2 = 2 * r2 + 1 - val;
+        } else {
+            if (q2 >= 0x80000000U)
+                output->a = 1;
+            q2 = 2 * q2;
+            r2 = 2 * r2 + 1;
+        }
+        delta = val - 1 - r2;
+    } while (p < 64 && (q1 < delta || (q1 == delta && r1 == 0)));
+
+    output->m = q2 + 1;
+    output->s = p - 32;
+}
+
+void gen_DIV(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *left;
+    ENode *right;
+    Type *type;
+    int tmp;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    type = expr->rtype;
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_DIV_MOD(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (IS_TYPE_FLOAT(type)) {
+        fp_binary_operator((type->size == 4) ? PC_FDIVS : PC_FDIV, left, right, outputReg, output);
+        return;
+    }
+
+    if (is_unsigned(type)) {
+        if (ENODE_IS(right, EINTCONST) && (tmp = ispowerof2(right->data.intval.lo))) {
+            shift_right_immediate(left, type, tmp, outputReg, output);
+        } else if (!copts.optimize_for_size && ENODE_IS(right, EINTCONST) && right->data.intval.lo != 1) {
+            SInt32 value;
+            int tmpreg1;
+            int tmpreg2;
+            int tmpreg3;
+            int tmpreg4;
+            int tmpreg5;
+            int tmpreg6;
+            int finalReg;
+            struct mu u_magicoutput;
+            Operand op1;
+            value = right->data.intval.lo;
+            tmpreg1 = ALLOC_GPR();
+            tmpreg2 = ALLOC_GPR();
+            finalReg = outputReg ? outputReg : ALLOC_GPR();
+
+            memclrw(&op1, sizeof(Operand));
+            GEN_NODE(left, &op1);
+            ENSURE_GPR(&op1, left->rtype, 0);
+
+            tmpreg3 = op1.reg;
+            create_unsigned_magic(value, &u_magicoutput);
+            load_immediate(tmpreg2, u_magicoutput.m);
+            emitpcode(PC_MULHWU, tmpreg1, tmpreg2, tmpreg3);
+            if (u_magicoutput.a == 0) {
+                if (u_magicoutput.s)
+                    emitpcode(PC_RLWINM, finalReg, tmpreg1, (32 - u_magicoutput.s) & 31, u_magicoutput.s, 31);
+                else
+                    emitpcode(PC_MR, finalReg, tmpreg1);
+            } else if (u_magicoutput.a == 1) {
+                tmpreg4 = ALLOC_GPR();
+                if (copts.optimizationlevel > 1) {
+                    tmpreg5 = ALLOC_GPR();
+                    tmpreg6 = ALLOC_GPR();
+                } else {
+                    tmpreg5 = tmpreg4;
+                    tmpreg6 = tmpreg4;
+                }
+
+                emitpcode(PC_SUBF, tmpreg4, tmpreg1, tmpreg3);
+                emitpcode(PC_RLWINM, tmpreg5, tmpreg4, 31, 1, 31);
+                emitpcode(PC_ADD, tmpreg6, tmpreg5, tmpreg1);
+                emitpcode(PC_RLWINM, finalReg, tmpreg6, (32 - (u_magicoutput.s - 1)) & 31, u_magicoutput.s - 1, 31);
+            }
+
+            output->optype = OpndType_GPR;
+            output->reg = finalReg;
+        } else {
+            binary_operator(PC_DIVWU, left, right, outputReg, output);
+        }
+    } else {
+        SInt32 value;
+        if (ENODE_IS(right, EINTCONST) && (tmp = ispowerof2(right->data.intval.lo))) {
+            signed_divide_by_power_of_2(left, tmp, 0, outputReg, output);
+        } else if (ENODE_IS(right, EINTCONST) && (tmp = ispowerof2(-right->data.intval.lo))) {
+            signed_divide_by_power_of_2(left, tmp, 1, outputReg, output);
+        } else if (!copts.optimize_for_size && ENODE_IS(right, EINTCONST) && (value = right->data.intval.lo) != 1u && value != -1) {
+            int tmpreg2;
+            int tmpreg3;
+            int tmpreg1;
+            int tmpreg4;
+            int finalReg;
+            struct ms s_magicoutput;
+            Operand op2;
+            value = right->data.intval.lo;
+            tmpreg1 = ALLOC_GPR();
+            tmpreg2 = ALLOC_GPR();
+            tmpreg3 = ALLOC_GPR();
+            finalReg = outputReg ? outputReg : ALLOC_GPR();
+
+            memclrw(&op2, sizeof(Operand));
+            GEN_NODE(left, &op2);
+            ENSURE_GPR(&op2, left->rtype, 0);
+
+            tmpreg4 = op2.reg;
+            create_signed_magic(value, &s_magicoutput);
+            load_immediate(tmpreg2, s_magicoutput.m);
+            emitpcode(PC_MULHW, tmpreg1, tmpreg2, tmpreg4);
+            if (value > 0 && s_magicoutput.m < 0) {
+                int t = ALLOC_GPR();
+                emitpcode(PC_ADD, t, tmpreg1, tmpreg4);
+                tmpreg1 = t;
+            } else if (value < 0 && s_magicoutput.m > 0) {
+                int t = ALLOC_GPR();
+                emitpcode(PC_SUBF, t, tmpreg4, tmpreg1);
+                tmpreg1 = t;
+            }
+
+            if (s_magicoutput.s) {
+                int t = ALLOC_GPR();
+                emitpcode(PC_SRAWI, t, tmpreg1, s_magicoutput.s);
+                tmpreg1 = t;
+            }
+
+            emitpcode(PC_RLWINM, tmpreg3, tmpreg1, 1, 31, 31);
+            emitpcode(PC_ADD, finalReg, tmpreg1, tmpreg3);
+
+            output->optype = OpndType_GPR;
+            output->reg = finalReg;
+        } else {
+            binary_operator(PC_DIVW, left, right, outputReg, output);
+        }
+    }
+}
+
+void gen_MODULO(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *left;
+    ENode *right;
+    int tmp;
+    struct mu u_magicoutput;
+    struct ms s_magicoutput;
+    Operand op1;
+    Operand op2;
+    SInt32 value;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    memclrw(&op1, sizeof(Operand));
+    memclrw(&op2, sizeof(Operand));
+
+    if (TYPE_IS_8BYTES(expr->rtype)) {
+        I8_gen_DIV_MOD(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (ENODE_IS(right, EINTCONST) && (tmp = ispowerof2(right->data.intval.lo))) {
+        if (is_unsigned(expr->rtype))
+            shift_and_mask(left, 0, 32 - tmp, 31, outputReg, output);
+        else
+            signed_mod_by_power_of_2(left, tmp, 0, outputReg, output);
+    } else if (!copts.optimize_for_size && ENODE_IS(right, EINTCONST) && (value = right->data.intval.lo) != 1u && value != -1) {
+        GEN_NODE(left, &op1);
+        ENSURE_GPR(&op1, left->rtype, 0);
+
+        if (is_unsigned(expr->rtype)) {
+            int tmpreg1;
+            int tmpreg2;
+            int tmpreg3;
+            int tmpreg4;
+            int tmpreg5;
+            int tmpreg6;
+            int tmpreg7;
+            int tmpreg8;
+            int finalReg;
+
+            tmpreg1 = op1.reg;
+            tmpreg2 = ALLOC_GPR();
+            tmpreg3 = ALLOC_GPR();
+            tmpreg4 = ALLOC_GPR();
+            finalReg = outputReg ? outputReg : ALLOC_GPR();
+
+            create_unsigned_magic(right->data.intval.lo, &u_magicoutput);
+            load_immediate(tmpreg3, u_magicoutput.m);
+            emitpcode(PC_MULHWU, tmpreg2, tmpreg3, tmpreg1);
+
+            if (u_magicoutput.a == 0 && u_magicoutput.s != 0)
+                emitpcode(PC_RLWINM, tmpreg2, tmpreg2, (32 - u_magicoutput.s) & 31, u_magicoutput.s, 31);
+
+            if (u_magicoutput.a == 1) {
+                tmpreg5 = ALLOC_GPR();
+                if (copts.optimizationlevel > 1) {
+                    tmpreg6 = ALLOC_GPR();
+                    tmpreg7 = ALLOC_GPR();
+                    tmpreg8 = ALLOC_GPR();
+                } else {
+                    tmpreg6 = tmpreg5;
+                    tmpreg7 = tmpreg5;
+                    tmpreg8 = tmpreg5;
+                }
+                emitpcode(PC_SUBF, tmpreg5, tmpreg2, tmpreg1);
+                emitpcode(PC_RLWINM, tmpreg6, tmpreg5, 31, 1, 31);
+                emitpcode(PC_ADD, tmpreg7, tmpreg6, tmpreg2);
+                emitpcode(PC_RLWINM, tmpreg8, tmpreg7, (32 - (u_magicoutput.s - 1)) & 31, u_magicoutput.s - 1, 31);
+                tmpreg2 = tmpreg8;
+            }
+
+            if (value > 0 && value < 0x7FFF) {
+                emitpcode(PC_MULLI, tmpreg4, tmpreg2, value);
+            } else {
+                GEN_NODE(right, &op2);
+                ENSURE_GPR(&op2, right->rtype, 0);
+                emitpcode(PC_MULLW, tmpreg4, tmpreg2, op2.reg);
+            }
+
+            emitpcode(PC_SUBF, finalReg, tmpreg4, tmpreg1);
+            output->optype = OpndType_GPR;
+            output->reg = finalReg;
+        } else {
+            int tmpreg1;
+            int tmpreg2;
+            int tmpreg3;
+            int tmpreg4;
+            int tmpreg5;
+            int tmpreg6;
+            int finalReg;
+
+            tmpreg1 = op1.reg;
+            tmpreg2 = ALLOC_GPR();
+            tmpreg3 = ALLOC_GPR();
+            tmpreg4 = ALLOC_GPR();
+            tmpreg5 = ALLOC_GPR();
+            tmpreg6 = ALLOC_GPR();
+            finalReg = outputReg ? outputReg : ALLOC_GPR();
+
+            create_signed_magic(right->data.intval.lo, &s_magicoutput);
+            load_immediate(tmpreg3, s_magicoutput.m);
+            emitpcode(PC_MULHW, tmpreg2, tmpreg3, tmpreg1);
+
+            if (value > 0 && s_magicoutput.m < 0) {
+                int tmp = ALLOC_GPR();
+                emitpcode(PC_ADD, tmp, tmpreg2, tmpreg1);
+                tmpreg2 = tmp;
+            } else if (value < 0 && s_magicoutput.m > 0) {
+                int tmp = ALLOC_GPR();
+                emitpcode(PC_SUBF, tmp, tmpreg1, tmpreg2);
+                tmpreg2 = tmp;
+            }
+
+            if (s_magicoutput.s != 0) {
+                int tmp = ALLOC_GPR();
+                emitpcode(PC_SRAWI, tmp, tmpreg2, s_magicoutput.s);
+                tmpreg2 = tmp;
+            }
+
+            emitpcode(PC_RLWINM, tmpreg4, tmpreg2, 1, 31, 31);
+            emitpcode(PC_ADD, tmpreg5, tmpreg2, tmpreg4);
+
+            if (value < 0x7FFF && value > -0x4000) {
+                emitpcode(PC_MULLI, tmpreg6, tmpreg5, value);
+            } else {
+                GEN_NODE(right, &op2);
+                ENSURE_GPR(&op2, right->rtype, 0);
+
+                emitpcode(PC_MULLW, tmpreg6, tmpreg5, op2.reg);
+            }
+
+            emitpcode(PC_SUBF, finalReg, tmpreg6, tmpreg1);
+            output->optype = OpndType_GPR;
+            output->reg = finalReg;
+        }
+    } else {
+        int tmpreg1;
+        int tmpreg2;
+        int finalReg;
+
+        if (right->hascall) {
+            GEN_NODE(right, &op2);
+            ENSURE_GPR(&op2, right->rtype, 0);
+            GEN_NODE(left, &op1);
+            ENSURE_GPR(&op1, left->rtype, 0);
+        } else {
+            GEN_NODE(left, &op1);
+            ENSURE_GPR(&op1, left->rtype, 0);
+            GEN_NODE(right, &op2);
+            ENSURE_GPR(&op2, right->rtype, 0);
+        }
+
+        tmpreg1 = ALLOC_GPR();
+        tmpreg2 = ALLOC_GPR();
+        finalReg = outputReg ? outputReg : ALLOC_GPR();
+
+        emitpcode(is_unsigned(expr->rtype) ? PC_DIVWU : PC_DIVW, tmpreg1, op1.reg, op2.reg);
+        emitpcode(PC_MULLW, tmpreg2, tmpreg1, op2.reg);
+        emitpcode(PC_SUBF, finalReg, tmpreg2, op1.reg);
+
+        output->optype = OpndType_GPR;
+        output->reg = finalReg;
+    }
+}
+
+void gen_ADD(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *left;
+    ENode *right;
+    Type *type;
+    Operand opleft;
+    Operand opright;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    type = expr->rtype;
+
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_ADD(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (IS_TYPE_FLOAT(type)) {
+        if (ENODE_IS(left, EMUL) && copts.fp_contract) {
+            fp_multiply_add(
+                    (type->size == 4) ? PC_FMADDS : PC_FMADD,
+                    left->data.diadic.left,
+                    left->data.diadic.right,
+                    right,
+                    outputReg, output);
+        } else if (ENODE_IS(right, EMUL) && copts.fp_contract) {
+            fp_multiply_add(
+                    (type->size == 4) ? PC_FMADDS : PC_FMADD,
+                    right->data.diadic.left,
+                    right->data.diadic.right,
+                    left,
+                    outputReg, output);
+        } else {
+            fp_binary_operator(
+                    (type->size == 4) ? PC_FADDS : PC_FADD,
+                    left, right,
+                    outputReg, output);
+        }
+        return;
+    }
+
+    if (right->hascall) {
+        GEN_NODE(right, &opright);
+        if (opright.optype >= OpndType_IndirectGPR_ImmOffset)
+            ENSURE_GPR(&opright, right->rtype, 0);
+
+        GEN_NODE(left, &opleft);
+        if (opleft.optype >= OpndType_IndirectGPR_ImmOffset)
+            ENSURE_GPR(&opleft, left->rtype, 0);
+    } else {
+        GEN_NODE(left, &opleft);
+        if (opleft.optype >= OpndType_IndirectGPR_ImmOffset)
+            ENSURE_GPR(&opleft, left->rtype, 0);
+
+        GEN_NODE(right, &opright);
+        if (opright.optype >= OpndType_IndirectGPR_ImmOffset)
+            ENSURE_GPR(&opright, right->rtype, 0);
+    }
+
+    if (IS_TYPE_POINTER(expr->rtype)) {
+        if (TYPE_IS_8BYTES(expr->data.diadic.left->rtype)) {
+            opleft.optype = OpndType_GPR;
+            opleft.regHi = 0;
+        }
+        if (TYPE_IS_8BYTES(expr->data.diadic.right->rtype)) {
+            opright.optype = OpndType_GPR;
+            opright.regHi = 0;
+        }
+    }
+
+    combine(&opleft, &opright, outputReg, output);
+}
+
+void gen_SUB(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *left;
+    ENode *right;
+    Type *type;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    type = expr->rtype;
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_SUB(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (IS_TYPE_FLOAT(type)) {
+        if (ENODE_IS(left, EMUL) && copts.fp_contract) {
+            fp_multiply_add(
+                    (type->size == 4) ? PC_FMSUBS : PC_FMSUB,
+                    left->data.diadic.left,
+                    left->data.diadic.right,
+                    right,
+                    outputReg, output);
+        } else if (ENODE_IS(right, EMUL) && copts.fp_contract) {
+            fp_multiply_add(
+                    (type->size == 4) ? PC_FNMSUBS : PC_FNMSUB,
+                    right->data.diadic.left,
+                    right->data.diadic.right,
+                    left,
+                    outputReg, output);
+        } else {
+            fp_binary_operator(
+                    (type->size == 4) ? PC_FSUBS : PC_FSUB,
+                    left, right,
+                    outputReg, output);
+        }
+        return;
+    }
+
+    if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT(left->data.intval.lo))
+        binary_immediate(PC_SUBFIC, right, left->data.intval.lo, outputReg, output);
+    else
+        binary_operator(PC_SUBF, right, left, outputReg, output);
+}
+
+void gen_SHL(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    Type *type;
+    ENode *left;
+    ENode *right;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    type = expr->rtype;
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_SHL_SHR(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (ENODE_IS(right, EINTCONST))
+        shift_left_immediate(left, right->data.intval.lo, 0, outputReg, output);
+    else
+        binary_operator(PC_SLW, left, right, outputReg, output);
+}
+
+void gen_SHR(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    Type *type;
+    ENode *left;
+    ENode *right;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    type = expr->rtype;
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_SHL_SHR(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (ENODE_IS(right, EINTCONST))
+        shift_right_immediate(left, type, right->data.intval.lo, outputReg, output);
+    else
+        binary_operator(is_unsigned(type) ? PC_SRW : PC_SRAW, left, right, outputReg, output);
+}
+
+void gen_AND(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    Type *type;
+    ENode *left;
+    ENode *right;
+    short first;
+    short last;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    type = expr->rtype;
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_AND(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (ENODE_IS(right, EINTCONST) && ismaskconstant(right->data.intval.lo, &first, &last)) {
+        if (ENODE_IS(left, ESHL) && ENODE_IS(left->data.diadic.right, EINTCONST) && (int)(left->data.diadic.right->data.intval.lo + last) < 32) {
+            shift_and_mask(
+                    left->data.diadic.left,
+                    left->data.diadic.right->data.intval.lo,
+                    first, last,
+                    outputReg, output);
+        } else if (ENODE_IS(left, ESHR) && ENODE_IS(left->data.diadic.right, EINTCONST) && (int)left->data.diadic.right->data.intval.lo <= first && last >= first) {
+            if (left->data.diadic.right->data.intval.lo == 0)
+                shift_and_mask(left->data.diadic.left, 0, first, last, outputReg, output);
+            else
+                shift_and_mask(left->data.diadic.left, 32 - left->data.diadic.right->data.intval.lo, first, last, outputReg, output);
+        } else {
+            shift_and_mask(left, 0, first, last, outputReg, output);
+        }
+        return;
+    }
+
+    if (ENODE_IS(right, EINTCONST) && FITS_IN_USHORT(right->data.intval.lo)) {
+        binary_immediate(PC_ANDI, left, right->data.intval.lo, outputReg, output);
+        return;
+    }
+    if (ENODE_IS(right, EINTCONST) && FITS_IN_HI_SHORT(right->data.intval.lo)) {
+        binary_immediate(PC_ANDIS, left, right->data.intval.lo >> 16, outputReg, output);
+        return;
+    }
+
+    if (ENODE_IS(left, EINTCONST) && ismaskconstant(left->data.intval.lo, &first, &last)) {
+        if (ENODE_IS(right, ESHL) && ENODE_IS(right->data.diadic.right, EINTCONST) && (int)(right->data.diadic.right->data.intval.lo + last) < 32) {
+            shift_and_mask(
+                    right->data.diadic.left,
+                    right->data.diadic.right->data.intval.lo,
+                    first, last,
+                    outputReg, output);
+        } else if (ENODE_IS(right, ESHR) && ENODE_IS(right->data.diadic.right, EINTCONST) && (int)right->data.diadic.right->data.intval.lo <= first) {
+            if (right->data.diadic.right->data.intval.lo == 0)
+                shift_and_mask(right->data.diadic.left, 0, first, last, outputReg, output);
+            else
+                shift_and_mask(right->data.diadic.left, 32 - right->data.diadic.right->data.intval.lo, first, last, outputReg, output);
+        } else {
+            shift_and_mask(right, 0, first, last, outputReg, output);
+        }
+        return;
+    }
+
+    if (ENODE_IS(left, EINTCONST) && FITS_IN_USHORT(left->data.intval.lo)) {
+        binary_immediate(PC_ANDI, right, left->data.intval.lo, outputReg, output);
+        return;
+    }
+    if (ENODE_IS(left, EINTCONST) && FITS_IN_HI_SHORT(left->data.intval.lo)) {
+        binary_immediate(PC_ANDIS, right, left->data.intval.lo >> 16, outputReg, output);
+        return;
+    }
+
+    if (ENODE_IS(right, EBINNOT))
+        binary_operator(PC_ANDC, left, right->data.monadic, outputReg, output);
+    else if (ENODE_IS(left, EBINNOT))
+        binary_operator(PC_ANDC, right, left->data.monadic, outputReg, output);
+    else
+        binary_operator(PC_AND, left, right, outputReg, output);
+}
+
+void gen_XOR(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    Type *type;
+    ENode *left;
+    ENode *right;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    type = expr->rtype;
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_XOR(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (ENODE_IS(left, EINTCONST))
+        or_xor_immediate(PC_XORI, right, left->data.intval.lo, outputReg, output);
+    else if (ENODE_IS(right, EINTCONST))
+        or_xor_immediate(PC_XORI, left, right->data.intval.lo, outputReg, output);
+    else if (ENODE_IS(right, EBINNOT))
+        binary_operator(PC_EQV, left, right->data.monadic, outputReg, output);
+    else if (ENODE_IS(left, EBINNOT))
+        binary_operator(PC_EQV, left->data.monadic, right, outputReg, output);
+    else
+        binary_operator(PC_XOR, left, right, outputReg, output);
+}
+
+void gen_OR(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    Type *type;
+    ENode *left;
+    ENode *right;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    type = expr->rtype;
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_OR(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (ENODE_IS(left, EINTCONST))
+        or_xor_immediate(PC_ORI, right, left->data.intval.lo, outputReg, output);
+    else if (ENODE_IS(right, EINTCONST))
+        or_xor_immediate(PC_ORI, left, right->data.intval.lo, outputReg, output);
+    else if (ENODE_IS(right, EBINNOT))
+        binary_operator(PC_ORC, left, right->data.monadic, outputReg, output);
+    else if (ENODE_IS(left, EBINNOT))
+        binary_operator(PC_ORC, right, left->data.monadic, outputReg, output);
+    else
+        binary_operator(PC_OR, left, right, outputReg, output);
+}
+
+void gen_ASS(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    Type *type;
+    ENode *left;
+    ENode *right;
+    Operand opleft;
+    Operand opright;
+    Operand op2;
+    VarInfo *vi;
+    SInt32 incval;
+    short align;
+    short align2;
+
+    type = expr->rtype;
+    if (ENODE_IS(expr, ECONDASS)) {
+        left = expr->data.cond.expr1;
+        if (ENODE_IS(left, EINDIRECT)) {
+            left = left->data.monadic;
+        } else {
+#line 1759
+            CError_FATAL();
+        }
+        right = expr->data.cond.expr2;
+    } else {
+        left = expr->data.diadic.left;
+        right = expr->data.diadic.right;
+    }
+
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+    memclrw(&op2, sizeof(Operand));
+
+    if (TYPE_IS_8BYTES(type)) {
+        I8_gen_ASS(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (ENODE_IS(left, EOBJREF) && OBJECT_REG(left->data.objref)) {
+        vi = Registers_GetVarInfo(left->data.objref);
+        GEN_NODE_TO_REG(right, vi->reg, 0, &opright);
+        switch (vi->rclass) {
+            case RegClass_GPR:
+                ENSURE_GPR(&opright, type, vi->reg);
+                output->optype = OpndType_GPR;
+                break;
+            case RegClass_FPR:
+                ENSURE_FPR(&opright, type, vi->reg);
+                output->optype = OpndType_FPR;
+                break;
+            case RegClass_VR:
+                ENSURE_VR(&opright, type, vi->reg);
+                output->optype = OpndType_VR;
+                break;
+            default:
+#line 1810
+                CError_FATAL();
+        }
+        if (opright.reg != vi->reg) {
+            PCodeArg a, b;
+            a.kind = PCOp_REGISTER;
+            a.arg = vi->rclass;
+            a.data.reg.reg = vi->reg;
+            a.data.reg.effect = EffectWrite;
+            b.kind = PCOp_REGISTER;
+            b.arg = vi->rclass;
+            b.data.reg.reg = opright.reg;
+            b.data.reg.effect = EffectRead;
+            appendpcode(pclastblock, makecopyinstruction(&b, &a));
+        }
+        output->reg = vi->reg;
+        return;
+    }
+
+    if (IS_TYPE_FLOAT(type)) {
+        GEN_NODE_TO_FPR(right, &opright, right->rtype, 0);
+        if (ispostincrementopportunity(left, &opleft, &incval)) {
+            indirect(&opleft, expr);
+            store_fp(opright.reg, &opleft, type);
+            add_register_immediate(opleft.reg, opleft.reg, incval);
+        } else {
+            GEN_NODE(left, &opleft);
+            indirect(&opleft, expr);
+            store_fp(opright.reg, &opleft, type);
+        }
+        output->optype = OpndType_FPR;
+        output->reg = opright.reg;
+        return;
+    }
+
+    if (IS_TYPE_VECTOR(type)) {
+        GEN_NODE(right, &opright);
+        if (opright.optype == OpndType_Absolute)
+            ENSURE_VR(&opright, type, 0);
+        else
+            ENSURE_VR(&opright, right->rtype, 0);
+
+        if (ispostincrementopportunity(left, &opleft, &incval)) {
+            indirect(&opleft, expr);
+            store_v(opright.reg, &opleft, type);
+            add_register_immediate(opleft.reg, opleft.reg, incval);
+        } else {
+            GEN_NODE(left, &opleft);
+            indirect(&opleft, expr);
+            store_v(opright.reg, &opleft, type);
+        }
+        output->optype = OpndType_VR;
+        output->reg = opright.reg;
+        return;
+    }
+
+    if (TYPE_FITS_IN_REGISTER(type)) {
+        GEN_NODE_TO_GPR(right, &opright, right->rtype, 0);
+
+        if (ENODE_IS(left, EBITFIELD)) {
+            GEN_NODE(left->data.monadic, &opleft);
+            indirect(&opleft, expr);
+
+            op2 = opleft;
+            ENSURE_GPR(&op2, type, 0);
+            insert_bitfield(opright.reg, &op2, TYPE_BITFIELD(left->rtype));
+            store(op2.reg, &opleft, type);
+
+            if (!expr->ignored)
+                extract_bitfield(&op2, TYPE_BITFIELD(left->rtype), opright.reg, &opleft);
+        } else if (ispostincrementopportunity(left, &opleft, &incval)) {
+            indirect(&opleft, expr);
+            store(opright.reg, &opleft, type);
+            add_register_immediate(opleft.reg, opleft.reg, incval);
+        } else {
+            GEN_NODE(left, &opleft);
+            indirect(&opleft, expr);
+            store(opright.reg, &opleft, type);
+        }
+
+        output->optype = OpndType_GPR;
+        output->reg = opright.reg;
+        return;
+    }
+
+    GEN_NODE(right, &opright);
+    GEN_NODE(left, output);
+
+    indirect(output, expr);
+    if (output->object) {
+        if (output->object->datatype == DLOCAL && (output->object->u.var.info->flags & VarInfoFlag1))
+            align = CMach_ArgumentAlignment(type);
+        else
+            align = CMach_AllocationAlignment(type, output->object->qual);
+    } else {
+        align = CMach_AllocationAlignment(type, 0);
+    }
+    if (opright.object) {
+        if (opright.object->datatype == DLOCAL && (opright.object->u.var.info->flags & VarInfoFlag1))
+            align2 = CMach_ArgumentAlignment(type);
+        else
+            align2 = CMach_AllocationAlignment(type, opright.object->qual);
+    } else {
+        align2 = CMach_AllocationAlignment(type, 0);
+    }
+
+    if (align2 < align)
+        align = align2;
+
+    move_block(output, &opright, type->size, align);
+}
+
+ENode *evaluate_and_skip_comma(ENode *expr) {
+    Operand op;
+    ENode *inner;
+
+    memclrw(&op, sizeof(Operand));
+    while (ENODE_IS(expr, ECOMMA)) {
+        inner = expr->data.diadic.left;
+        GEN_NODE(inner, &op);
+        if (ENODE_IS(inner, EINDIRECT) && (op.flags & OpndFlags_Volatile)) {
+            if (TYPE_FITS_IN_REGISTER_2(inner->rtype)) {
+                ENSURE_GPR(&op, inner->rtype, 0);
+            } else if (IS_TYPE_FLOAT(inner->rtype)) {
+                ENSURE_FPR(&op, inner->rtype, 0);
+            }
+        }
+        expr = expr->data.diadic.right;
+    }
+    return expr;
+}
+
+void gen_COMMA(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *left;
+    ENode *right;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    GEN_NODE(left, output);
+
+    if (ENODE_IS(left, EINDIRECT) && (output->flags & OpndFlags_Volatile)) {
+        if (TYPE_FITS_IN_REGISTER_2(left->rtype)) {
+            ENSURE_GPR(output, left->rtype, 0);
+        } else if (IS_TYPE_FLOAT(left->rtype)) {
+            ENSURE_FPR(output, left->rtype, 0);
+        }
+    }
+
+    GEN_NODE_TO_REG(right, outputReg, 0, output);
+}
+
+void gen_TYPCON(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *inner;
+    Type *srctype;
+    Type *dsttype;
+
+    inner = expr->data.monadic;
+    srctype = inner->rtype;
+    dsttype = expr->rtype;
+
+    if (TYPE_IS_8BYTES(srctype) || TYPE_IS_8BYTES(dsttype)) {
+        I8_gen_TYPCON(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    if (IS_TYPE_VOID(dsttype)) {
+        GEN_NODE(inner, output);
+        if (ENODE_IS(inner, EINDIRECT) && (output->flags & OpndFlags_Volatile)) {
+            if (TYPE_FITS_IN_REGISTER_2(srctype)) {
+                ENSURE_GPR(output, srctype, 0);
+            } else if (IS_TYPE_FLOAT(srctype)) {
+                ENSURE_FPR(output, srctype, 0);
+            }
+        }
+    } else if (IS_TYPE_INT_OR_ENUM(srctype)) {
+        if (IS_TYPE_FLOAT(dsttype)) {
+            GEN_NODE(inner, output);
+            if (srctype->size < 4)
+                extend32(output, srctype, 0);
+            ENSURE_GPR(output, srctype, 0);
+
+            if (is_unsigned(srctype))
+                convert_unsigned_to_floating(output, dsttype->size == 4, outputReg);
+            else
+                convert_integer_to_floating(output, dsttype->size == 4, outputReg);
+        } else if (IS_TYPE_VECTOR(dsttype)) {
+            GEN_NODE_TO_REG(inner, outputReg, 0, output);
+            ENSURE_VR(output, dsttype, outputReg);
+        } else if (
+                srctype->size < dsttype->size &&
+                !ENODE_IS_INDIRECT_TO(inner, EBITFIELD) &&
+                !ENODE_IS_ASSIGN_TO(inner, EBITFIELD) &&
+                !(ENODE_IS_RANGE(inner, EPOSTINC, EPREDEC) && ENODE_IS(inner->data.monadic->data.monadic, EBITFIELD))
+                ) {
+            GEN_NODE(inner, output);
+            extend32(output, srctype, outputReg);
+        } else if (dsttype->size < srctype->size || dsttype->size < 4) {
+            GEN_NODE(inner, output);
+            ENSURE_GPR(output, srctype, 0);
+            extend32(output, dsttype, outputReg);
+        } else {
+            GEN_NODE_TO_REG(inner, outputReg, 0, output);
+        }
+    } else if (IS_TYPE_POINTER(srctype)) {
+        GEN_NODE_TO_REG(inner, outputReg, 0, output);
+        if (dsttype->size < srctype->size)
+            ENSURE_GPR(output, srctype, outputReg);
+    } else if (IS_TYPE_FLOAT(srctype)) {
+        if (IS_TYPE_FLOAT(dsttype)) {
+            GEN_NODE_TO_REG(inner, outputReg, 0, output);
+            ENSURE_FPR(output, srctype, outputReg);
+
+            if (dsttype->size == 4 && srctype->size != 4) {
+                int tmp = outputReg ? outputReg : ALLOC_FPR();
+                emitpcode(PC_FRSP, tmp, output->reg);
+                output->optype = OpndType_FPR;
+                output->reg = tmp;
+            }
+        } else if (is_unsigned(dsttype) && dsttype->size == 4) {
+            GEN_NODE_TO_REG(inner, 1, 0, output);
+            ENSURE_FPR(output, srctype, 1);
+            convert_floating_to_unsigned(output, outputReg);
+        } else {
+            GEN_NODE_TO_REG(inner, 0, 0, output);
+            ENSURE_FPR(output, srctype, 0);
+            convert_floating_to_integer(output, outputReg);
+        }
+    } else if (IS_TYPE_VECTOR(srctype) && IS_TYPE_VECTOR(dsttype)) {
+        GEN_NODE_TO_REG(inner, outputReg, 0, output);
+        ENSURE_VR(output, srctype, outputReg);
+    } else if (srctype->size == dsttype->size) {
+        GEN_NODE_TO_REG(inner, outputReg, 0, output);
+    } else {
+#line 2224
+        CError_FATAL();
+    }
+}
+
+void gen_BITFIELD(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+#line 2238
+    CError_FATAL();
+}
+
+void gen_INTCONST(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    if (TYPE_IS_8BYTES(expr->rtype)) {
+        I8_gen_INTCONST(expr, outputReg, outputRegHi, output);
+        return;
+    }
+
+    output->optype = OpndType_Absolute;
+    output->immediate = CInt64_GetULong(&expr->data.intval);
+}
+
+void gen_FLOATCONST(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+#line 2294
+    CError_FATAL();
+}
+
+void gen_STRINGCONST(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+#line 2308
+    CError_FATAL();
+}
+
+static Boolean COND_is_ABS_MatchNodes(ENode *cond, ENode *expr1, ENode *expr2) {
+    if (cond->type != expr1->type || cond->type != expr2->type)
+        return 0;
+
+    if (!(TYPE_FITS_IN_REGISTER(cond->rtype) && TYPE_FITS_IN_REGISTER(expr1->rtype) && TYPE_FITS_IN_REGISTER(expr2->rtype)))
+        return 0;
+
+    if (cond->rtype->size != expr1->rtype->size || cond->rtype->size != expr2->rtype->size)
+        return 0;
+
+    switch (cond->type) {
+        case EOBJREF:
+            if (cond->data.objref != expr1->data.objref || cond->data.objref != expr2->data.objref)
+                return 0;
+            return 1;
+        case EINDIRECT:
+        case ETYPCON:
+            return COND_is_ABS_MatchNodes(cond->data.monadic, expr1->data.monadic, expr2->data.monadic);
+        default:
+            return 0;
+    }
+}
+
+static ENode *COND_is_ABS(ENode *cond, ENode *expr1, ENode *expr2) {
+    ENode *tmp;
+
+    int parity = 0;
+    while (ENODE_IS(cond, ELOGNOT)) {
+        parity = (parity + 1) & 1;
+        cond = cond->data.monadic;
+    }
+
+    if (parity) {
+        tmp = expr1;
+        expr1 = expr2;
+        expr2 = tmp;
+    }
+
+    switch (cond->type) {
+        case ELESS:
+        case ELESSEQU:
+            tmp = expr1;
+            expr1 = expr2;
+            expr2 = tmp;
+            break;
+        case EGREATER:
+        case EGREATEREQU:
+            break;
+        default:
+            return NULL;
+    }
+
+    if (IS_INT_CONST_ZERO(cond->data.diadic.right)) {
+        cond = cond->data.diadic.left;
+    } else if (IS_INT_CONST_ZERO(cond->data.diadic.left)) {
+        cond = cond->data.diadic.left;
+        tmp = expr1;
+        expr1 = expr2;
+        expr2 = tmp;
+    } else {
+        return NULL;
+    }
+
+    if (ENODE_IS(expr1, EADD) && ENODE_IS(expr2, ESUB)) {
+        if (COND_is_ABS_MatchNodes(cond, expr1->data.diadic.right, expr2->data.diadic.right))
+            return expr1;
+        else
+            return NULL;
+    }
+
+    if (!ENODE_IS(expr2, EMONMIN))
+        return NULL;
+
+    expr2 = expr2->data.monadic;
+    if (COND_is_ABS_MatchNodes(cond, expr1, expr2))
+        return expr1;
+
+    return NULL;
+}
+
+static int COND_has_const(ENode *expr1, ENode *expr2) {
+    SInt32 diff;
+    int result = 0;
+
+    if (IS_INT_CONST(expr1))
+        result += 1;
+    if (IS_INT_CONST(expr2))
+        result += 2;
+
+    if (result & 1) {
+        if (IS_INT_CONST_ZERO(expr1))
+            return 5;
+    }
+    if (result & 2) {
+        if (IS_INT_CONST_ZERO(expr2))
+            return 6;
+    }
+
+    if (result == 3) {
+        diff = expr1->data.intval.lo - expr2->data.intval.lo;
+        if (diff == 1 || diff == -1)
+            return 4;
+    }
+
+    return result;
+}
+
+static Boolean COND_is_COMPARE(ENode *cond, ENode *expr1, ENode *expr2, short outputReg, Operand *output) {
+    SInt32 left;
+    SInt32 right;
+    int parity;
+    int negate;
+    ENodeType nt;
+
+    while (ENODE_IS(expr1, ETYPCON) && TYPE_FITS_IN_REGISTER(expr1->rtype))
+        expr1 = expr1->data.monadic;
+    while (ENODE_IS(expr2, ETYPCON) && TYPE_FITS_IN_REGISTER(expr2->rtype))
+        expr2 = expr2->data.monadic;
+
+    if (!(ENODE_IS(expr1, EINTCONST) && TYPE_FITS_IN_REGISTER(expr1->rtype) && CInt64_IsInRange(expr1->data.intval, 4)))
+        return 0;
+    if (!(ENODE_IS(expr2, EINTCONST) && TYPE_FITS_IN_REGISTER(expr2->rtype) && CInt64_IsInRange(expr2->data.intval, 4)))
+        return 0;
+
+    left = CInt64_GetULong(&expr1->data.intval);
+    right = CInt64_GetULong(&expr2->data.intval);
+    parity = 0;
+    negate = 0;
+    switch (left) {
+        case 1:
+            if (right != 0)
+                return 0;
+            break;
+        case 0:
+            parity = 1;
+            if (right == -1)
+                negate = 1;
+            else if (right != 1)
+                return 0;
+            break;
+        case -1:
+            if (right != 0)
+                return 0;
+            negate = 1;
+            break;
+        default:
+            return 0;
+    }
+
+    while (ENODE_IS(cond, ELOGNOT)) {
+        parity = (parity + 1) & 1;
+        cond = cond->data.monadic;
+    }
+
+    if (parity) {
+        nt = invert_relop(cond->type);
+        if (nt == cond->type)
+            return 0;
+        cond->type = nt;
+    }
+
+    if (negate)
+        gen_negated_condition_gpr(cond, output, outputReg);
+    else
+        gen_condition_gpr(cond, output, outputReg);
+
+    return 1;
+}
+
+void gen_COND(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *cond;
+    ENode *expr1;
+    ENode *expr2;
+    Type *type;
+    PCodeLabel *label1;
+    PCodeLabel *label2;
+    PCodeLabel *label3;
+    Operand op1;
+    Operand op2;
+    int has_const;
+    int reg1;
+    int reg2;
+    int reg3;
+    short align;
+    short max_align;
+
+    expr1 = expr->data.cond.expr1;
+    expr2 = expr->data.cond.expr2;
+    type = expr->rtype;
+
+    label1 = makepclabel();
+    label2 = makepclabel();
+    label3 = makepclabel();
+
+    memclrw(&op1, sizeof(Operand));
+    memclrw(&op2, sizeof(Operand));
+
+    cond = evaluate_and_skip_comma(expr->data.cond.cond);
+
+    if (TOC_use_fsel(expr)) {
+        ENode *left;
+        ENode *right;
+        ENode *tmp;
+        ENodeType nt;
+        Boolean flag;
+        Operand op;
+        int fneg_reg;
+        int fsel_reg;
+        int final_reg;
+
+        left = cond->data.diadic.left;
+        right = cond->data.diadic.right;
+        nt = cond->type;
+        flag = 0;
+        memclrw(&op, sizeof(Operand));
+
+        switch (nt) {
+            case EGREATEREQU:
+            case EEQU:
+                break;
+            case EGREATER:
+                tmp = left;
+                left = right;
+                right = tmp;
+            case ELESS:
+            case ENOTEQU:
+                tmp = expr1;
+                expr1 = expr2;
+                expr2  = tmp;
+                break;
+            case ELESSEQU:
+                tmp = left;
+                left = right;
+                right = tmp;
+                break;
+            default:
+#line 2780
+                CError_FATAL();
+        }
+
+        if (ENODE_IS(left, EFLOATCONST) && CMach_FloatIsZero(left->data.floatval)) {
+            GEN_NODE(right, &op);
+            ENSURE_FPR(&op, right->rtype, 0);
+            flag = 1;
+        } else if (ENODE_IS(right, EFLOATCONST) && CMach_FloatIsZero(right->data.floatval)) {
+            GEN_NODE(left, &op);
+            ENSURE_FPR(&op, left->rtype, 0);
+        } else {
+            fp_binary_operator((type->size == 4) ? PC_FSUBS : PC_FSUB, left, right, 0, &op);
+        }
+
+        switch (cond->type) {
+            case EEQU:
+            case ENOTEQU:
+                if (flag) {
+                    GEN_NODE_TO_FPR(expr1, &op1, expr1->rtype, 0);
+                    GEN_NODE_TO_FPR(expr2, &op2, expr2->rtype, 0);
+
+                    fneg_reg = ALLOC_FPR();
+                    emitpcode(PC_FNEG, fneg_reg, op.reg);
+                    fsel_reg = ALLOC_FPR();
+                    emitpcode(PC_FSEL, fsel_reg, op.reg, op1.reg, op2.reg);
+                    final_reg = outputReg ? outputReg : ALLOC_FPR();
+                    emitpcode(PC_FSEL, final_reg, fneg_reg, fsel_reg, op2.reg);
+                } else {
+                    GEN_NODE_TO_FPR(expr1, &op1, expr1->rtype, 0);
+                    GEN_NODE_TO_FPR(expr2, &op2, expr2->rtype, 0);
+
+                    fneg_reg = ALLOC_FPR();
+                    emitpcode(PC_FNEG, fneg_reg, op.reg);
+                    fsel_reg = ALLOC_FPR();
+                    emitpcode(PC_FSEL, fsel_reg, op.reg, op1.reg, op2.reg);
+                    final_reg = outputReg ? outputReg : ALLOC_FPR();
+                    emitpcode(PC_FSEL, final_reg, fneg_reg, fsel_reg, op2.reg);
+                }
+                break;
+            case ELESS:
+            case EGREATER:
+            case ELESSEQU:
+            case EGREATEREQU:
+                GEN_NODE_TO_FPR(expr1, &op1, expr1->rtype, 0);
+                GEN_NODE_TO_FPR(expr2, &op2, expr2->rtype, 0);
+
+                fneg_reg = op.reg;
+                if (flag) {
+                    fneg_reg = ALLOC_FPR();
+                    emitpcode(PC_FNEG, fneg_reg, op.reg);
+                }
+
+                final_reg = outputReg ? outputReg : ALLOC_FPR();
+                emitpcode(PC_FSEL, final_reg, fneg_reg, op1.reg, op2.reg);
+                break;
+            default:
+#line 2862
+                CError_FATAL();
+        }
+
+        output->optype = OpndType_FPR;
+        output->reg = final_reg;
+        return;
+    }
+
+    if (TOC_use_isel(expr, 1)) {
+        Operand isel_op1;
+        Operand isel_op2;
+        ENode *x;
+        ENode *y;
+        ENode *abs_expr;
+
+        memclrw(&isel_op1, sizeof(Operand));
+        memclrw(&isel_op2, sizeof(Operand));
+
+        if (COND_is_COMPARE(cond, expr1, expr2, outputReg, output))
+            return;
+
+        if ((abs_expr = COND_is_ABS(cond, expr1, expr2))) {
+            if (ENODE_IS(expr1, EADD) && ENODE_IS(expr2, ESUB)) {
+                x = expr1->data.diadic.left;
+                y = expr2->data.diadic.right;
+                if (y->hascall) {
+                    GEN_NODE(y, &op2);
+                    ENSURE_GPR(&op2, y->rtype, 0);
+
+                    GEN_NODE(x, &op1);
+                    if (op1.optype >= OpndType_IndirectGPR_ImmOffset)
+                        ENSURE_GPR(&op1, x->rtype, 0);
+                } else {
+                    GEN_NODE(x, &op1);
+                    if (op1.optype >= OpndType_IndirectGPR_ImmOffset)
+                        ENSURE_GPR(&op1, x->rtype, 0);
+
+                    GEN_NODE(y, &op2);
+                    ENSURE_GPR(&op2, y->rtype, 0);
+                }
+
+                reg1 = ALLOC_GPR();
+                emitpcode(PC_SRAWI, reg1, op2.reg, 31);
+                reg2 = ALLOC_GPR();
+                emitpcode(PC_XOR, reg2, reg1, op2.reg);
+                reg3 = ALLOC_GPR();
+                emitpcode(PC_SUBF, reg3, reg1, reg2);
+                op2.optype = OpndType_GPR;
+                op2.reg = reg3;
+                combine(&op1, &op2, outputReg, output);
+            } else {
+                GEN_NODE(abs_expr, output);
+                ENSURE_GPR(output, abs_expr->rtype, 0);
+
+                reg1 = ALLOC_GPR();
+                emitpcode(PC_SRAWI, reg1, output->reg, 31);
+                reg2 = ALLOC_GPR();
+                emitpcode(PC_XOR, reg2, reg1, output->reg);
+                reg3 = outputReg ? outputReg : ALLOC_GPR();
+                emitpcode(PC_SUBF, reg3, reg1, reg2);
+                op2.optype = OpndType_GPR;
+                op2.reg = reg3;
+            }
+            return;
+        }
+
+        if ((has_const = COND_has_const(expr1, expr2))) {
+            switch (COND_has_const(expr1, expr2)) {
+                case 0:
+                case 2:
+                    break;
+                case 3:
+                case 4:
+                    if (has_const == 4) {
+                        if (expr1->data.intval.lo < expr2->data.intval.lo)
+                            gen_negated_condition_gpr(cond, &isel_op1, 0);
+                        else
+                            gen_condition_gpr(cond, &isel_op1, 0);
+
+                        GEN_NODE(expr1, &op1);
+                        GEN_NODE(expr2, &op2);
+                        reg1 = ALLOC_GPR();
+                        ENSURE_GPR(&op2, expr2->rtype, reg1);
+                        emitpcode(PC_ADD, reg1, isel_op1.reg, op2.reg);
+                        if (outputReg) {
+                            emitpcode(PC_MR, reg2 = outputReg, reg1);
+                            reg1 = reg2;
+                        }
+                        output->optype = OpndType_GPR;
+                        output->reg = reg1;
+                        return;
+                    }
+                    break;
+                case 5:
+                case 6:
+                    gen_negated_condition_gpr(cond, &isel_op1, 0);
+                    ENSURE_GPR(&isel_op1, TYPE(&stunsignedint), 0);
+                    GEN_NODE(expr1, &op1);
+                    GEN_NODE(expr2, &op2);
+
+                    reg1 = outputReg ? outputReg : ALLOC_GPR();
+                    if (op1.optype == OpndType_Absolute && op1.immediate == 0) {
+                        ENSURE_GPR(&op2, expr2->rtype, 0);
+                        emitpcode(PC_ANDC, reg1, op2.reg, isel_op1.reg);
+                    } else if (op2.optype == OpndType_Absolute && op2.immediate == 0) {
+                        ENSURE_GPR(&op1, expr1->rtype, 0);
+                        emitpcode(PC_AND, reg1, op1.reg, isel_op1.reg);
+                    } else {
+#line 3119
+                        CError_FATAL();
+                    }
+
+                    output->optype = OpndType_GPR;
+                    output->reg = reg1;
+                    return;
+                case 1:
+                    reg2 = ALLOC_GPR();
+                    reg1 = reg2;
+                    logical_expression_nobranch(cond, 0, &isel_op2);
+
+                    GEN_NODE_TO_REG(expr1, reg1, 0, &op1);
+                    ENSURE_GPR(&op1, expr1->rtype, reg1);
+                    if (op1.reg != reg1)
+                        emitpcode(PC_MR, reg1, op1.reg);
+
+                    branch_conditional(isel_op2.reg, isel_op2.regOffset, 1, label2);
+                    branch_label(label1);
+
+                    GEN_NODE_TO_REG(expr2, reg1, 0, &op2);
+                    ENSURE_GPR(&op2, expr2->rtype, reg1);
+                    if (op2.reg != reg1)
+                        emitpcode(PC_MR, reg1, op2.reg);
+
+                    branch_label(label2);
+
+                    if (outputReg) {
+                        emitpcode(PC_MR, reg2 = outputReg, reg1);
+                        reg1 = reg2;
+                    }
+
+                    output->optype = OpndType_GPR;
+                    output->reg = reg1;
+                    return;
+
+                default:
+#line 3168
+                    CError_FATAL();
+            }
+        }
+
+        reg1 = ALLOC_GPR();
+        logical_expression_nobranch(cond, 0, &isel_op2);
+
+        GEN_NODE_TO_REG(expr2, reg1, 0, &op2);
+        ENSURE_GPR(&op2, expr2->rtype, reg1);
+        if (op2.reg != reg1)
+            emitpcode(PC_MR, reg1, op2.reg);
+
+        branch_conditional(isel_op2.reg, isel_op2.regOffset, 0, label2);
+        branch_label(label1);
+
+        GEN_NODE_TO_REG(expr1, reg1, 0, &op1);
+        ENSURE_GPR(&op1, expr1->rtype, reg1);
+        if (op1.reg != reg1)
+            emitpcode(PC_MR, reg1, op1.reg);
+
+        branch_label(label2);
+
+        if (outputReg) {
+            emitpcode(PC_MR, reg2 = outputReg, reg1);
+            reg1 = reg2;
+        }
+
+        output->optype = OpndType_GPR;
+        output->reg = reg1;
+        return;
+    }
+
+    logical_expression(cond, label1, label2, label1);
+    branch_label(label1);
+
+    if (IS_TYPE_VOID(type) || expr->ignored) {
+        GEN_NODE(expr1, &op1);
+        branch_always(label3);
+        branch_label(label2);
+        GEN_NODE(expr2, &op2);
+    } else if (IS_TYPE_FLOAT(type)) {
+        if (expr1->hascall || expr2->hascall)
+            reg1 = ALLOC_FPR();
+        else
+            reg1 = outputReg ? outputReg : ALLOC_FPR();
+
+        GEN_NODE_TO_REG(expr1, reg1, 0, &op1);
+        ENSURE_FPR(&op1, expr1->rtype, reg1);
+        if (op1.reg != reg1)
+            emitpcode(PC_FMR, reg1, op1.reg);
+
+        branch_always(label3);
+        branch_label(label2);
+
+        GEN_NODE_TO_REG(expr2, reg1, 0, &op2);
+        ENSURE_FPR(&op2, expr2->rtype, reg1);
+        if (op2.reg != reg1)
+            emitpcode(PC_FMR, reg1, op2.reg);
+
+        output->optype = OpndType_FPR;
+        output->reg = reg1;
+    } else if (TYPE_IS_8BYTES(type)) {
+        if (expr1->hascall || expr2->hascall) {
+            reg1 = ALLOC_GPR();
+            reg3 = ALLOC_GPR();
+            reg2 = reg3;
+        } else {
+            reg1 = outputReg ? outputReg : ALLOC_GPR();
+            reg3 = outputRegHi ? outputRegHi : ALLOC_GPR();
+            reg2 = reg3;
+        }
+
+        GEN_NODE_TO_REG(expr1, reg1, reg2, &op1);
+        coerce_to_register_pair(&op1, expr1->rtype, reg1, reg2);
+
+        branch_always(label3);
+        branch_label(label2);
+
+        GEN_NODE_TO_REG(expr2, reg1, reg2, &op2);
+        coerce_to_register_pair(&op2, expr2->rtype, reg1, reg2);
+
+        output->optype = OpndType_GPRPair;
+        output->reg = reg1;
+        output->regHi = reg2;
+    } else if (TYPE_FITS_IN_REGISTER(type)) {
+        if (expr1->hascall || expr2->hascall)
+            reg1 = ALLOC_GPR();
+        else
+            reg1 = outputReg ? outputReg : ALLOC_GPR();
+
+        GEN_NODE_TO_REG(expr1, reg1, 0, &op1);
+        ENSURE_GPR(&op1, expr1->rtype, reg1);
+        if (op1.reg != reg1)
+            emitpcode(PC_MR, reg1, op1.reg);
+
+        branch_always(label3);
+        branch_label(label2);
+
+        GEN_NODE_TO_REG(expr2, reg1, 0, &op2);
+        ENSURE_GPR(&op2, expr2->rtype, reg1);
+        if (op2.reg != reg1)
+            emitpcode(PC_MR, reg1, op2.reg);
+
+        output->optype = OpndType_GPR;
+        output->reg = reg1;
+    } else if (IS_TYPE_VECTOR(type)) {
+        if (expr1->hascall || expr2->hascall)
+            reg1 = ALLOC_VR();
+        else
+            reg1 = outputReg ? outputReg : ALLOC_VR();
+
+        GEN_NODE_TO_REG(expr1, reg1, 0, &op1);
+        ENSURE_VR(&op1, expr1->rtype, reg1);
+        if (op1.reg != reg1)
+            emitpcode(PC_VMR, reg1, op1.reg);
+
+        branch_always(label3);
+        branch_label(label2);
+
+        GEN_NODE_TO_REG(expr2, reg1, 0, &op2);
+        ENSURE_VR(&op2, expr2->rtype, reg1);
+        if (op2.reg != reg1)
+            emitpcode(PC_VMR, reg1, op2.reg);
+
+        output->optype = OpndType_VR;
+        output->reg = reg1;
+    } else {
+        symbol_operand(output, maketemporary(type));
+        indirect(output, NULL);
+        coerce_to_addressable(output);
+
+        GEN_NODE(expr1, &op1);
+
+        if (op1.object) {
+            if (op1.object->datatype == DLOCAL && (op1.object->u.var.info->flags & VarInfoFlag1))
+                align = CMach_ArgumentAlignment(type);
+            else
+                align = CMach_AllocationAlignment(type, op1.object->qual);
+        } else {
+            align = CMach_AllocationAlignment(type, 0);
+        }
+
+        max_align = CMach_AllocationAlignment(type, 0);
+        if (align > max_align)
+            align = max_align;
+
+        move_block(output, &op1, type->size, align);
+
+        branch_always(label3);
+        branch_label(label2);
+
+        GEN_NODE(expr2, &op2);
+
+        if (op2.object) {
+            if (op2.object->datatype == DLOCAL && (op2.object->u.var.info->flags & VarInfoFlag1))
+                align = CMach_ArgumentAlignment(type);
+            else
+                align = CMach_AllocationAlignment(type, op2.object->qual);
+        } else {
+            align = CMach_AllocationAlignment(type, 0);
+        }
+
+        if (align > max_align)
+            align = max_align;
+
+        move_block(output, &op2, type->size, align);
+    }
+
+    branch_label(label3);
+}
+
+static Boolean CONDASS_is_ABS(ENode *cond, ENode *expr1, ENode *expr2) {
+    ENode *inner;
+
+    int parity = 0;
+    while (ENODE_IS(cond, ELOGNOT)) {
+        parity = (parity + 1) & 1;
+        cond = cond->data.monadic;
+    }
+
+    if (IS_INT_CONST_ZERO(cond->data.diadic.right)) {
+        inner = cond->data.diadic.left;
+    } else if (IS_INT_CONST_ZERO(cond->data.diadic.left)) {
+        inner = cond->data.diadic.left;
+        parity = (parity + 1) & 1;
+    } else {
+        return 0;
+    }
+
+    switch (cond->type) {
+        case EGREATER:
+        case EGREATEREQU:
+            if (!parity)
+                return 0;
+            break;
+        case ELESS:
+        case ELESSEQU:
+            if (parity)
+                return 0;
+            break;
+        default:
+            return 0;
+    }
+
+    if (!ENODE_IS(expr2, EMONMIN))
+        return 0;
+
+    expr2 = expr2->data.monadic;
+    if (ENODE_IS(inner, EASS)) {
+        inner = inner->data.diadic.left;
+        if (!ENODE_IS(expr2, EINDIRECT))
+            return 0;
+        expr2 = expr2->data.monadic;
+        if (!ENODE_IS(expr1, EINDIRECT))
+            return 0;
+        expr1 = expr1->data.monadic;
+    }
+
+    return COND_is_ABS_MatchNodes(inner, expr1, expr2);
+}
+
+static int CONDASS_is_OPASS_One(ENode *a, ENode *b, SInt32 *value, ENodeType *nodetype) {
+    Type *type;
+
+    type = a->rtype;
+    if (!ENODE_IS(a, EINDIRECT))
+        return 0;
+    a = a->data.monadic;
+    if (!ENODE_IS(a, EOBJREF))
+        return 0;
+
+    if (ENODE_IS(b, ETYPCON) && b->rtype == type)
+        b = b->data.monadic;
+
+    if (b->type != EOR && b->type != EADD && b->type != ESUB)
+        return 0;
+
+    *nodetype = b->type;
+    if (!IS_INT_CONST(b->data.diadic.right))
+        return 0;
+    *value = b->data.diadic.right->data.intval.lo;
+
+    if (*value != 1 && *value != -1)
+        return 0;
+
+    b = b->data.diadic.left;
+    if (ENODE_IS(b, ETYPCON) && TYPE_FITS_IN_REGISTER(b->rtype))
+        b = b->data.monadic;
+
+    if (!ENODE_IS(b, EINDIRECT))
+        return 0;
+    b = b->data.monadic;
+    if (!ENODE_IS(b, EOBJREF))
+        return 0;
+
+    if (a->data.objref == b->data.objref)
+        return 1;
+    return 0;
+}
+
+void gen_CONDASS(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *cond;
+    ENode *expr1;
+    ENode *expr2;
+    Type *type;
+    PCodeLabel *label1;
+    PCodeLabel *label2;
+    Operand op1;
+    Operand op2;
+    Operand op3;
+    int reg1;
+    int reg2;
+
+    expr1 = expr->data.cond.expr1;
+    expr2 = expr->data.cond.expr2;
+    type = expr->rtype;
+
+    label1 = makepclabel();
+    label2 = makepclabel();
+
+    memclrw(&op1, sizeof(Operand));
+    memclrw(&op2, sizeof(Operand));
+    memclrw(&op3, sizeof(Operand));
+
+    cond = evaluate_and_skip_comma(expr->data.cond.cond);
+
+    if (TOC_use_fsel(expr)) {
+        ENode *left;
+        ENode *right;
+        ENode *tmp;
+        ENodeType nt;
+        Boolean flag;
+        Boolean flag2;
+        Operand op;
+        int tmpreg;
+        int fneg_reg;
+        int fsel_reg;
+        int final_reg;
+
+        left = cond->data.diadic.left;
+        right = cond->data.diadic.right;
+        nt = cond->type;
+        flag = 0;
+        memclrw(&op, sizeof(Operand));
+
+#line 3704
+        CError_ASSERT(ENODE_IS(expr1, EINDIRECT));
+        CError_ASSERT(ENODE_IS(expr1->data.monadic, EOBJREF));
+
+        tmpreg = OBJECT_REG(expr1->data.monadic->data.objref);
+        final_reg = outputReg ? tmpreg : ALLOC_FPR();
+
+        switch (nt) {
+            case EGREATER:
+                tmp = left;
+                left = right;
+                right = tmp;
+            case ELESS:
+            case ENOTEQU:
+                tmp = expr1;
+                expr1 = expr2;
+                expr2  = tmp;
+                flag2 = 1;
+                break;
+            case ELESSEQU:
+                tmp = left;
+                left = right;
+                right = tmp;
+                flag2 = 0;
+                break;
+            case EGREATEREQU:
+            case EEQU:
+                flag2 = 0;
+                break;
+            default:
+#line 3744
+                CError_FATAL();
+        }
+
+        if (ENODE_IS(left, EFLOATCONST) && CMach_FloatIsZero(left->data.floatval)) {
+            GEN_NODE(right, &op);
+            ENSURE_FPR(&op, right->rtype, 0);
+            flag = 1;
+        } else if (ENODE_IS(right, EFLOATCONST) && CMach_FloatIsZero(right->data.floatval)) {
+            GEN_NODE(left, &op);
+            ENSURE_FPR(&op, left->rtype, 0);
+        } else {
+            fp_binary_operator((type->size == 4) ? PC_FSUBS : PC_FSUB, left, right, 0, &op);
+        }
+
+        switch (cond->type) {
+            case EEQU:
+            case ENOTEQU:
+                if (flag) {
+                    GEN_NODE(expr1, &op1);
+                    op3 = op1;
+                    ENSURE_FPR(&op1, expr1->rtype, 0);
+
+                    GEN_NODE_TO_FPR(expr2, &op2, expr2->rtype, 0);
+
+                    fneg_reg = ALLOC_FPR();
+                    emitpcode(PC_FNEG, fneg_reg, op.reg);
+                    fsel_reg = ALLOC_FPR();
+                    emitpcode(PC_FSEL, fsel_reg, op.reg, op2.reg, op1.reg);
+                    emitpcode(PC_FSEL, final_reg, fneg_reg, op2.reg, fsel_reg);
+                } else {
+                    GEN_NODE(expr1, &op1);
+                    op3 = op1;
+                    ENSURE_FPR(&op1, expr1->rtype, 0);
+
+                    GEN_NODE_TO_FPR(expr2, &op2, expr2->rtype, 0);
+
+                    fneg_reg = ALLOC_FPR();
+                    emitpcode(PC_FNEG, fneg_reg, op.reg);
+                    fsel_reg = ALLOC_FPR();
+                    emitpcode(PC_FSEL, fsel_reg, op.reg, op2.reg, op1.reg);
+                    emitpcode(PC_FSEL, final_reg, fneg_reg, op2.reg, fsel_reg);
+                }
+                break;
+            case ELESS:
+            case EGREATER:
+            case ELESSEQU:
+            case EGREATEREQU:
+                GEN_NODE(expr1, &op1);
+                GEN_NODE(expr2, &op2);
+                op3 = flag2 ? op2 : op1;
+
+                ENSURE_FPR(&op1, expr1->rtype, 0);
+                ENSURE_FPR(&op2, expr2->rtype, 0);
+
+                fneg_reg = op.reg;
+                if (flag) {
+                    fneg_reg = ALLOC_FPR();
+                    emitpcode(PC_FNEG, fneg_reg, op.reg);
+                }
+
+                emitpcode(PC_FSEL, final_reg, fneg_reg, op2.reg, op1.reg);
+                break;
+            default:
+#line 2862
+                CError_FATAL();
+        }
+
+        if (op3.optype != OpndType_FPR)
+            store_fp(final_reg, &op3, type);
+
+        output->optype = OpndType_FPR;
+        output->reg = final_reg;
+        return;
+    }
+
+    if (TOC_use_isel(expr, 1)) {
+        Operand isel_op;
+        ENode *x;
+        ENode *y;
+        ENode *abs_expr;
+
+        memclrw(&isel_op, sizeof(Operand));
+#line 3966
+        CError_ASSERT(ENODE_IS(expr1, EINDIRECT));
+#line 3968
+        CError_ASSERT(ENODE_IS(expr1->data.monadic, EOBJREF));
+
+        if (CONDASS_is_ABS(cond, expr1, expr2)) {
+            if (ENODE_IS(cond->data.diadic.left, EASS))
+                GEN_NODE(cond->data.diadic.left, &isel_op);
+            else if (ENODE_IS(cond->data.diadic.right, EASS))
+                GEN_NODE(cond->data.diadic.right, &isel_op);
+
+            outputReg = OBJECT_REG(expr1->data.monadic->data.objref);
+#line 3979
+            CError_ASSERT(outputReg);
+
+            GEN_NODE(expr1, &op1);
+            op3 = op1;
+
+#line 3986
+            CError_ASSERT(op3.optype == OpndType_GPR && op3.reg == outputReg);
+
+            ENSURE_GPR(&op1, expr1->rtype, 0);
+            if (expr1->rtype->size < 4)
+                extend32(output, expr1->rtype, op3.reg);
+
+            reg1 = ALLOC_GPR();
+            reg2 = ALLOC_GPR();
+            emitpcode(PC_SRAWI, reg1, op1.reg, 31);
+            emitpcode(PC_XOR, reg2, reg1, op1.reg);
+            emitpcode(PC_SUBF, outputReg, reg1, reg2);
+            output->optype = OpndType_GPR;
+            output->reg = op3.reg;
+
+            if (expr1->rtype->size < 4)
+                extend32(output, expr1->rtype, op3.reg);
+
+            return;
+        }
+    }
+
+    logical_expression(cond, label1, label2, label1);
+    branch_label(label1);
+    gen_ASS(expr, outputReg, outputRegHi, output);
+    branch_label(label2);
+}
+
+void gen_FUNCCALL(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+}
+
+void gen_OBJREF(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    symbol_operand(output, expr->data.objref);
+}
+
+void gen_UNEXPECTED(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+#line 4160
+    CError_FATAL();
+}
+
+static int small(ENode *expr) {
+    Type *type;
+
+    type = expr->rtype;
+    if (!ENODE_IS(expr, ETYPCON))
+        return 0;
+
+    do {
+        expr = expr->data.monadic;
+    } while (ENODE_IS(expr, ETYPCON) && (type = expr->rtype)->size == 4);
+
+    return IS_TYPE_INT_OR_ENUM(type) && ((type->size < 2) || (type->size == 2 && !is_unsigned(type)));
+}
+
+void binary_operator(Opcode opcode, ENode *left, ENode *right, short outputReg, Operand *output) {
+    Operand opleft;
+    Operand opright;
+    int reg;
+
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+
+    if (right->hascall) {
+        GEN_NODE_TO_GPR(right, &opright, right->rtype, 0);
+        GEN_NODE_TO_GPR(left, &opleft, left->rtype, 0);
+    } else {
+        GEN_NODE_TO_GPR(left, &opleft, left->rtype, 0);
+        GEN_NODE_TO_GPR(right, &opright, right->rtype, 0);
+    }
+
+    reg = outputReg ? outputReg : ALLOC_GPR();
+
+    if (opcode == PC_MULLW && small(left))
+        emitpcode(opcode, reg, opright.reg, opleft.reg);
+    else
+        emitpcode(opcode, reg, opleft.reg, opright.reg);
+
+    output->optype = OpndType_GPR;
+    output->reg = reg;
+}
+
+static void binary_immediate(Opcode opcode, ENode *left, SInt32 value, short outputReg, Operand *output) {
+    Operand opleft;
+    int reg;
+
+    memclrw(&opleft, sizeof(Operand));
+    GEN_NODE_TO_GPR(left, &opleft, left->rtype, 0);
+
+    reg = outputReg ? outputReg : ALLOC_GPR();
+
+    if (opcode == PC_MULLI && value == 0)
+        emitpcode(PC_LI, reg, 0);
+    else if (opcode == PC_MULLI && value == 1)
+        emitpcode(PC_MR, reg, opleft.reg);
+    else
+        emitpcode(opcode, reg, opleft.reg, value);
+
+    output->optype = OpndType_GPR;
+    output->reg = reg;
+}
+
+void unary_operator(Opcode opcode, ENode *expr, short outputReg, Operand *output) {
+    Operand op;
+    int reg;
+
+    memclrw(&op, sizeof(Operand));
+    GEN_NODE_TO_GPR(expr, &op, expr->rtype, 0);
+
+    reg = outputReg ? outputReg : ALLOC_GPR();
+    emitpcode(opcode, reg, op.reg);
+
+    output->optype = OpndType_GPR;
+    output->reg = reg;
+}
+
+static void or_xor_immediate(Opcode opcode, ENode *expr, SInt32 value, short outputReg, Operand *output) {
+    Operand op;
+    int reg;
+
+    memclrw(&op, sizeof(Operand));
+    GEN_NODE_TO_GPR(expr, &op, expr->rtype, 0);
+
+    reg = outputReg ? outputReg : ALLOC_GPR();
+
+    if (expr->rtype->size > 2 && value != (value & 0xFFFF)) {
+        if (value & 0xFFFF) {
+            emitpcode((opcode == PC_ORI) ? PC_ORIS : PC_XORIS, reg, op.reg, value >> 16);
+            emitpcode(opcode, reg, reg, value & 0xFFFF);
+        } else {
+            emitpcode((opcode == PC_ORI) ? PC_ORIS : PC_XORIS, reg, op.reg, value >> 16);
+        }
+    } else {
+        emitpcode(opcode, reg, op.reg, value & 0xFFFF);
+    }
+
+    output->optype = OpndType_GPR;
+    output->reg = reg;
+}
+
+static void shift_left_immediate(ENode *expr, short shift, short negate, short outputReg, Operand *output) {
+    Operand op;
+    int reg;
+
+    memclrw(&op, sizeof(Operand));
+    GEN_NODE_TO_GPR(expr, &op, expr->rtype, 0);
+
+    if (negate)
+        reg = ALLOC_GPR();
+    else
+        reg = outputReg ? outputReg : ALLOC_GPR();
+
+    emitpcode(PC_RLWINM, reg, op.reg, shift & 31, 0, 31 - (shift & 31));
+
+    if (negate) {
+        int tmp = outputReg ? outputReg : ALLOC_GPR();
+        emitpcode(PC_NEG, tmp, reg);
+        reg = tmp;
+    }
+
+    output->optype = OpndType_GPR;
+    output->reg = reg;
+}
+
+static void shift_right_immediate(ENode *expr, Type *type, short shift, short outputReg, Operand *output) {
+    Operand op;
+    int reg;
+
+    memclrw(&op, sizeof(Operand));
+    GEN_NODE_TO_GPR(expr, &op, expr->rtype, 0);
+
+    reg = outputReg ? outputReg : ALLOC_GPR();
+
+    if (is_unsigned(type))
+        emitpcode(PC_RLWINM, reg, op.reg, (32 - (shift & 31)) & 31, (shift & 31) + (32 - (type->size * 8)), 31);
+    else
+        emitpcode(PC_SRAWI, reg, op.reg, shift & 31);
+
+    output->optype = OpndType_GPR;
+    output->reg = reg;
+}
+
+static void signed_divide_by_power_of_2(ENode *expr, int shift, int negate, short outputReg, Operand *output) {
+    Operand op;
+    int reg;
+    int tmpreg1;
+    int tmpreg2;
+
+    memclrw(&op, sizeof(Operand));
+    GEN_NODE_TO_GPR(expr, &op, expr->rtype, 0);
+
+    if (!copts.optimize_for_size && shift == 1) {
+        tmpreg1 = ALLOC_GPR();
+        emitpcode(PC_RLWINM, tmpreg1, op.reg, 1, 31, 31);
+        tmpreg2 = ALLOC_GPR();
+        emitpcode(PC_ADD, tmpreg2, tmpreg1, op.reg);
+        reg = (outputReg && !negate) ? outputReg : ALLOC_GPR();
+        emitpcode(PC_SRAWI, reg, tmpreg2, 1);
+    } else {
+        tmpreg1 = ALLOC_GPR();
+        emitpcode(PC_SRAWI, tmpreg1, op.reg, shift);
+        reg = (outputReg && !negate) ? outputReg : ALLOC_GPR();
+        emitpcode(PC_ADDZE, reg, tmpreg1);
+    }
+
+    if (negate) {
+        int prevreg = reg;
+        reg = outputReg ? outputReg : ALLOC_GPR();
+        emitpcode(PC_NEG, reg, prevreg);
+    }
+
+    output->optype = OpndType_GPR;
+    output->reg = reg;
+}
+
+static void signed_mod_by_power_of_2(ENode *expr, int shift, int negate, short outputReg, Operand *output) {
+    Operand op;
+    int reg;
+    int tmpreg1;
+    int tmpreg2;
+    int tmpreg3;
+    int tmpreg4;
+
+    memclrw(&op, sizeof(Operand));
+    GEN_NODE_TO_GPR(expr, &op, expr->rtype, 0);
+
+    reg = outputReg ? outputReg : ALLOC_GPR();
+    tmpreg1 = ALLOC_GPR();
+    tmpreg2 = ALLOC_GPR();
+    tmpreg3 = ALLOC_GPR();
+
+    if (shift == 1) {
+        emitpcode(PC_RLWINM, tmpreg1, op.reg, 1, 31, 31);
+        emitpcode(PC_RLWINM, tmpreg2, op.reg, 0, 31, 31);
+        emitpcode(PC_XOR, tmpreg3, tmpreg2, tmpreg1);
+        emitpcode(PC_SUBF, reg, tmpreg1, tmpreg3);
+    } else {
+        tmpreg4 = ALLOC_GPR();
+        emitpcode(PC_RLWINM, tmpreg1, op.reg, 32 - shift, 0, 31 - (32 - shift));
+        emitpcode(PC_RLWINM, tmpreg2, op.reg, 1, 31, 31);
+        emitpcode(PC_SUBF, tmpreg3, tmpreg2, tmpreg1);
+        emitpcode(PC_RLWINM, tmpreg4, tmpreg3, shift, 0, 31);
+        emitpcode(PC_ADD, reg, tmpreg4, tmpreg2);
+    }
+
+    output->optype = OpndType_GPR;
+    output->reg = reg;
+}
+
+static void fp_binary_operator(Opcode opcode, ENode *left, ENode *right, short outputReg, Operand *output) {
+    Operand opleft;
+    Operand opright;
+    int reg;
+
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+
+    if (right->hascall) {
+        GEN_NODE_TO_FPR(right, &opright, right->rtype, 0);
+        GEN_NODE_TO_FPR(left, &opleft, left->rtype, 0);
+    } else {
+        GEN_NODE_TO_FPR(left, &opleft, left->rtype, 0);
+        GEN_NODE_TO_FPR(right, &opright, right->rtype, 0);
+    }
+
+    reg = outputReg ? outputReg : ALLOC_FPR();
+    emitpcode(opcode, reg, opleft.reg, opright.reg);
+
+    output->optype = OpndType_FPR;
+    output->reg = reg;
+}
+
+void fp_unary_operator(Opcode opcode, ENode *expr, short outputReg, Operand *output) {
+    Operand op;
+    int reg;
+
+    memclrw(&op, sizeof(Operand));
+    GEN_NODE_TO_FPR(expr, &op, expr->rtype, 0);
+
+    reg = outputReg ? outputReg : ALLOC_FPR();
+    emitpcode(opcode, reg, op.reg);
+
+    output->optype = OpndType_FPR;
+    output->reg = reg;
+}
+
+void fp_multiply_add(Opcode opcode, ENode *a, ENode *b, ENode *c, short outputReg, Operand *output) {
+    Operand opA;
+    Operand opB;
+    Operand opC;
+    int reg;
+
+    memclrw(&opA, sizeof(Operand));
+    memclrw(&opB, sizeof(Operand));
+    memclrw(&opC, sizeof(Operand));
+
+    if (c->hascall) {
+        GEN_NODE_TO_FPR(c, &opC, c->rtype, 0);
+        if (b->hascall) {
+            GEN_NODE_TO_FPR(b, &opB, b->rtype, 0);
+            GEN_NODE_TO_FPR(a, &opA, a->rtype, 0);
+        } else {
+            GEN_NODE_TO_FPR(a, &opA, a->rtype, 0);
+            GEN_NODE_TO_FPR(b, &opB, b->rtype, 0);
+        }
+    } else {
+        if (b->hascall) {
+            GEN_NODE_TO_FPR(b, &opB, b->rtype, 0);
+            GEN_NODE_TO_FPR(a, &opA, a->rtype, 0);
+            GEN_NODE_TO_FPR(c, &opC, c->rtype, 0);
+        } else {
+            GEN_NODE_TO_FPR(a, &opA, a->rtype, 0);
+            GEN_NODE_TO_FPR(b, &opB, b->rtype, 0);
+            GEN_NODE_TO_FPR(c, &opC, c->rtype, 0);
+        }
+    }
+
+    reg = outputReg ? outputReg : ALLOC_FPR();
+    emitpcode(opcode, reg, opA.reg, opB.reg, opC.reg);
+
+    output->optype = OpndType_FPR;
+    output->reg = reg;
+}
+
+void gen_COMPARE(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    expr = evaluate_and_skip_comma(expr);
+    if (TYPE_IS_8BYTES(expr->data.diadic.right->rtype) || TYPE_IS_8BYTES(expr->data.diadic.left->rtype))
+        I8_gen_condition(expr, output, 1);
+    else
+        gen_condition_gpr(expr, output, outputReg);
+}
+
+void gen_LOGICAL(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *inner;
+    ENodeType op;
+
+    expr = evaluate_and_skip_comma(expr);
+    inner = evaluate_and_skip_comma(expr->data.monadic);
+    expr->data.monadic = inner;
+
+    if (ENODE_IS(expr, ELOGNOT) && !ENODE_IS2(inner, ELAND, ELOR)) {
+        op = inner->type;
+        if (ENODE_IS(inner, ELOGNOT)) {
+            switch (inner->data.monadic->type) {
+                case ELOGNOT:
+                case ELESS:
+                case EGREATER:
+                case ELESSEQU:
+                case EGREATEREQU:
+                case EEQU:
+                case ENOTEQU:
+                case ELAND:
+                case ELOR:
+                    GEN_NODE(inner->data.monadic, output);
+                    if (expr->data.monadic->rtype->size < 4)
+                        extend32(output, expr->data.monadic->rtype, 0);
+                    ENSURE_GPR(output, expr->data.monadic->rtype, 0);
+                    return;
+            }
+        }
+
+        if (ENODE_IS(inner, ENOTEQU) && !TYPE_IS_8BYTES(inner->data.diadic.left->rtype) && ENODE_IS(inner->data.diadic.right, EINTCONST) && inner->data.diadic.right->data.intval.lo == 0) {
+            int tmpreg1;
+            int tmpreg2;
+            GEN_NODE(inner->data.diadic.left, output);
+            if (inner->data.diadic.left->rtype->size < 4)
+                extend32(output, inner->data.diadic.left->rtype, 0);
+            ENSURE_GPR(output, inner->data.diadic.left->rtype, 0);
+
+            tmpreg1 = ALLOC_GPR();
+            tmpreg2 = ALLOC_GPR();
+#line 4853
+            CError_ASSERT(output->optype == OpndType_GPR);
+
+            emitpcode(PC_CNTLZW, tmpreg2, output->reg);
+            emitpcode(PC_RLWINM, tmpreg1, tmpreg2, 27, 5, 31);
+            output->optype = OpndType_GPR;
+            output->reg = tmpreg1;
+        } else {
+            int tmpreg1;
+            int tmpreg2;
+            ENodeType inverted;
+
+            inverted = invert_relop(op);
+            if (op != inverted && !IS_TYPE_FLOAT(inner->data.diadic.left->rtype)) {
+                inner->type = inverted;
+                gen_COMPARE(inner, 0, 0, output);
+                inner->type = inverted;
+                return;
+            }
+
+            GEN_NODE(inner, output);
+            if (inner->rtype->size < 4)
+                extend32(output, inner->rtype, 0);
+            ENSURE_GPR(output, inner->rtype, 0);
+
+            tmpreg1 = ALLOC_GPR();
+            tmpreg2 = ALLOC_GPR();
+#line 4883
+            CError_ASSERT(output->optype == OpndType_GPR);
+
+            emitpcode(PC_CNTLZW, tmpreg2, output->reg);
+            emitpcode(PC_RLWINM, tmpreg1, tmpreg2, 27, 5, 31);
+            output->optype = OpndType_GPR;
+            output->reg = tmpreg1;
+        }
+    } else {
+        PCodeLabel *label1;
+        PCodeLabel *label2;
+        int tmpreg;
+
+        label1 = makepclabel();
+        label2 = makepclabel();
+
+        tmpreg = ALLOC_GPR();
+        emitpcode(PC_LI, tmpreg, 0);
+        logical_expression(expr, label1, label2, label1);
+        branch_label(label1);
+        emitpcode(PC_LI, tmpreg, 1);
+        branch_label(label2);
+        output->optype = OpndType_GPR;
+        output->reg = tmpreg;
+    }
+}
+
+void gen_NULLCHECK(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *left;
+    ENode *right;
+    Operand opleft;
+    Operand opright;
+    PrecomputedOperand *precomp;
+    int flag;
+    int reg;
+    PCodeLabel *label;
+
+    left = expr->data.nullcheck.nullcheckexpr;
+    right = expr->data.nullcheck.condexpr;
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+    flag = !IS_TYPE_VOID(expr->rtype) && !expr->ignored;
+
+    GEN_NODE(left, &opleft);
+    if (left->rtype->size < 4)
+        extend32(&opleft, left->rtype, 0);
+    ENSURE_GPR(&opleft, left->rtype, 0);
+
+    precomp = lalloc(sizeof(PrecomputedOperand));
+    precomp->precompid = expr->data.nullcheck.precompid;
+    precomp->operand = opleft;
+    precomp->next = precomputedoperands;
+    precomputedoperands = precomp;
+
+    emitpcode(PC_CMPI, 0, opleft.reg, 0);
+    if (flag) {
+        emitpcode(PC_MR, reg = ALLOC_GPR(), opleft.reg);
+    }
+
+    label = makepclabel();
+    branch_conditional(0, EEQU, 1, label);
+    GEN_NODE(right, &opright);
+    precomputedoperands = precomputedoperands->next;
+
+    if (flag) {
+        ENSURE_GPR(&opright, right->rtype, reg);
+        if (opright.reg != reg)
+            emitpcode(PC_MR, reg, opright.reg);
+        output->optype = OpndType_GPR;
+        output->reg = reg;
+    }
+
+    branch_label(label);
+}
+
+void gen_PRECOMP(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    PrecomputedOperand *precomp;
+
+    for (precomp = precomputedoperands; precomp; precomp = precomp->next) {
+        if (precomp->precompid == expr->data.precompid)
+            break;
+    }
+
+    *output = precomp->operand;
+}
+
+void logical_expression(ENode *cond, PCodeLabel *if_true, PCodeLabel *if_false, PCodeLabel *end) {
+    PCodeLabel *label;
+    Operand op;
+    memclrw(&op, sizeof(Operand));
+
+    cond = evaluate_and_skip_comma(cond);
+    switch (cond->type) {
+        case ELAND:
+            label = makepclabel();
+            logical_expression(cond->data.diadic.left, label, if_false, label);
+            branch_label(label);
+            logical_expression(cond->data.diadic.right, if_true, if_false, end);
+            break;
+        case ELOR:
+            label = makepclabel();
+            logical_expression(cond->data.diadic.left, if_true, label, label);
+            branch_label(label);
+            logical_expression(cond->data.diadic.right, if_true, if_false, end);
+            break;
+        case ELOGNOT:
+            logical_expression(cond->data.monadic, if_false, if_true, end);
+            break;
+        case ELESS:
+        case EGREATER:
+        case ELESSEQU:
+        case EGREATEREQU:
+        case EEQU:
+        case ENOTEQU:
+            if (TYPE_IS_8BYTES(cond->data.diadic.right->rtype) || TYPE_IS_8BYTES(cond->data.diadic.left->rtype))
+                I8_gen_condition(cond, &op, 0);
+            else
+                gen_condition(cond, &op);
+
+            if (end == if_true)
+                branch_conditional(op.reg, op.regOffset, 0, if_false);
+            else
+                branch_conditional(op.reg, op.regOffset, 1, if_true);
+            break;
+        default:
+#line 5160
+            CError_FATAL();
+    }
+}
+
+static void logical_expression_nobranch(ENode *cond, Boolean invert, Operand *output) {
+    cond = evaluate_and_skip_comma(cond);
+    switch (cond->type) {
+        case ELOGNOT:
+            logical_expression_nobranch(cond->data.monadic, 1, output);
+            break;
+        case ELESS:
+        case EGREATER:
+        case ELESSEQU:
+        case EGREATEREQU:
+        case EEQU:
+        case ENOTEQU:
+            if (invert) {
+                ENodeType nt = invert_relop(cond->type);
+#line 5190
+                CError_ASSERT(nt != cond->type);
+                cond->type = nt;
+            }
+
+            if (TYPE_IS_8BYTES(cond->data.diadic.right->rtype) || TYPE_IS_8BYTES(cond->data.diadic.left->rtype))
+                I8_gen_condition(cond, output, 0);
+            else
+                gen_condition(cond, output);
+
+            break;
+        default:
+#line 5206
+            CError_FATAL();
+    }
+}
+
+static ENodeType invert_relop(ENodeType nt) {
+    switch (nt) {
+        case ELESS: return EGREATEREQU;
+        case EGREATER: return ELESSEQU;
+        case ELESSEQU: return EGREATER;
+        case EGREATEREQU: return ELESS;
+        case EEQU: return ENOTEQU;
+        case ENOTEQU: return EEQU;
+        default: return nt;
+    }
+}
+
+static int reverse_relop(int nt) {
+    switch (nt) {
+        case ELESS: return EGREATER;
+        case EGREATER: return ELESS;
+        case ELESSEQU: return EGREATEREQU;
+        case EGREATEREQU: return ELESSEQU;
+        default: return nt;
+    }
+}
+
+void gen_condition(ENode *cond, Operand *output) {
+    ENode *left;
+    ENode *right;
+
+    left = cond->data.diadic.left;
+    right = cond->data.diadic.right;
+    if (IS_TYPE_FLOAT(left->rtype)) {
+        compare_floating(cond->type, left, right, output);
+        return;
+    }
+
+    if (ENODE_IS(right, EINTCONST)) {
+        if (is_unsigned(left->rtype)) {
+            UInt32 val = right->data.intval.lo;
+            if (FITS_IN_USHORT(val)) {
+                compare_immediate(cond->type, left, val, output);
+                return;
+            } else if (ENODE_IS2(cond, EEQU, ENOTEQU)) {
+                compare_immediate_long(cond->type, left, val, output);
+                return;
+            }
+        } else {
+            UInt32 val = right->data.intval.lo;
+            if (FITS_IN_SHORT(val)) {
+                compare_immediate(cond->type, left, val, output);
+                return;
+            } else if (ENODE_IS2(cond, EEQU, ENOTEQU)) {
+                compare_immediate_long(cond->type, left, val, output);
+                return;
+            }
+        }
+    } else if (ENODE_IS(left, EINTCONST)) {
+        if (is_unsigned(right->rtype)) {
+            UInt32 val = left->data.intval.lo;
+            if (FITS_IN_USHORT(val)) {
+                compare_immediate(reverse_relop(cond->type), right, val, output);
+                return;
+            } else if (ENODE_IS2(cond, EEQU, ENOTEQU)) {
+                compare_immediate_long(reverse_relop(cond->type), right, val, output);
+                return;
+            }
+        } else {
+            UInt32 val = left->data.intval.lo;
+            if (FITS_IN_SHORT(val)) {
+                compare_immediate(reverse_relop(cond->type), right, val, output);
+                return;
+            } else if (ENODE_IS2(cond, EEQU, ENOTEQU)) {
+                compare_immediate_long(reverse_relop(cond->type), right, val, output);
+                return;
+            }
+        }
+    }
+
+    compare_integer(cond->type, left, right, output);
+}
+
+void gen_condition_gpr(ENode *cond, Operand *output, short outputReg) {
+    ENode *left;
+    ENode *right;
+    Operand op1;
+    int tmpReg;
+    int reg;
+    int a;
+    int b;
+
+    left = cond->data.diadic.left;
+    right = cond->data.diadic.right;
+    memclrw(&op1, sizeof(Operand));
+
+    if (!IS_TYPE_FLOAT(left->rtype)) {
+        Operand op2;
+        Operand op3;
+        Operand op4;
+        memclrw(&op2, sizeof(Operand));
+        memclrw(&op3, sizeof(Operand));
+        memclrw(&op4, sizeof(Operand));
+
+        if (right->hascall) {
+            GEN_NODE(right, &op3);
+            if (!IS_INT_CONST_ZERO(right)) {
+                if (right->rtype->size < 4)
+                    extend32(&op3, right->rtype, 0);
+                ENSURE_GPR(&op3, right->rtype, 0);
+            }
+
+            GEN_NODE(left, &op2);
+            if (left->rtype->size < 4)
+                extend32(&op2, left->rtype, 0);
+            ENSURE_GPR(&op2, left->rtype, 0);
+        } else {
+            GEN_NODE(left, &op2);
+            ENSURE_GPR(&op2, left->rtype, 0);
+            if (left->rtype->size < 4)
+                extend32(&op2, left->rtype, 0);
+
+            GEN_NODE(right, &op3);
+            if (!IS_INT_CONST_ZERO(right)) {
+                if (right->rtype->size < 4)
+                    extend32(&op3, right->rtype, 0);
+                ENSURE_GPR(&op3, right->rtype, 0);
+            }
+        }
+
+        switch (cond->type) {
+            case EEQU:
+                if (
+                        copts.peephole &&
+                        IS_INT_CONST(right) &&
+                        pclastblock->pcodeCount > 0) {
+                    PCode *pc = pclastblock->lastPCode;
+                    if (pc->op == PC_RLWINM && pc->args[0].data.reg.reg == op2.reg) {
+                        SInt32 r6 = pc->args[2].data.imm.value;
+                        SInt32 r7 = pc->args[3].data.imm.value;
+                        SInt32 r3 = right->data.intval.lo;
+                        if (r7 == pc->args[4].data.imm.value) {
+                            reg = outputReg ? outputReg : ALLOC_GPR();
+                            if (r3 != (r3 & 1)) {
+                                emitpcode(PC_LI, reg, 0);
+                            } else if (r3 == 0) {
+                                int tmpreg = ALLOC_GPR();
+                                emitpcode(
+                                        PC_RLWINM, tmpreg,
+                                        pc->args[1].data.reg.reg,
+                                        (r6 + r7 + 1) & 31, 31, 31);
+                                emitpcode(PC_XORI, reg, tmpreg, 1);
+                            } else if (r3 == 1) {
+                                emitpcode(
+                                        PC_RLWINM, reg,
+                                        pc->args[1].data.reg.reg,
+                                        (r6 + r7 + 1) & 31, 31, 31);
+                            } else {
+#line 5434
+                                CError_FATAL();
+                            }
+                            output->optype = OpndType_GPR;
+                            output->reg = reg;
+                            return;
+                        }
+                    }
+                }
+
+                if (IS_INT_CONST_ZERO(right)) {
+                    //int tmpReg = ALLOC_GPR(); // affected
+                    int tmpReg;
+                        int t = used_virtual_registers[RegClass_GPR];
+                        used_virtual_registers[RegClass_GPR]++;
+                        emitpcode(PC_CNTLZW, t, op2.reg, 0);
+                        tmpReg = t;
+                    reg = outputReg ? outputReg : ALLOC_GPR();
+                    emitpcode(PC_RLWINM, reg, tmpReg, 27, 5, 31);
+                    output->optype = OpndType_GPR;
+                    output->reg = reg;
+                    return;
+                } else {
+                    int tmpReg, tmpReg2;
+                    tmpReg = ALLOC_GPR(); // affected
+                    emitpcode(PC_SUBF, tmpReg, op2.reg, op3.reg);
+                    tmpReg2 = ALLOC_GPR();
+                    emitpcode(PC_CNTLZW, tmpReg2, tmpReg);
+                    reg = outputReg ? outputReg : ALLOC_GPR();
+                    emitpcode(PC_RLWINM, reg, tmpReg2, 27, 5, 31);
+                    output->optype = OpndType_GPR;
+                    output->reg = reg;
+                    return;
+                }
+
+            case ENOTEQU:
+                if (
+                        copts.peephole &&
+                        IS_INT_CONST(right) &&
+                        pclastblock->pcodeCount > 0) {
+                    PCode *pc = pclastblock->lastPCode;
+                    if (pc->op == PC_RLWINM && pc->args[0].data.reg.reg == op2.reg) {
+                        SInt32 r6 = pc->args[2].data.imm.value;
+                        SInt32 r7 = pc->args[3].data.imm.value;
+                        SInt32 r3 = right->data.intval.lo;
+                        if (r7 == pc->args[4].data.imm.value) {
+                            reg = outputReg ? outputReg : ALLOC_GPR();
+                            if (r3 != (r3 & 1)) {
+                                emitpcode(PC_LI, reg, 1);
+                            } else if (r3 == 0) {
+                                emitpcode(
+                                        PC_RLWINM, reg,
+                                        pc->args[1].data.reg.reg,
+                                        (r6 + r7 + 1) & 31, 31, 31);
+                            } else if (r3 == 1) {
+                                int tmpreg = ALLOC_GPR(); // affected
+                                emitpcode(
+                                        PC_RLWINM, tmpreg,
+                                        pc->args[1].data.reg.reg,
+                                        (r6 + r7 + 1) & 31, 31, 31);
+                                emitpcode(PC_XORI, reg, tmpreg, 1);
+                            } else {
+#line 5503
+                                CError_FATAL();
+                            }
+                            output->optype = OpndType_GPR;
+                            output->reg = reg;
+                            return;
+                        }
+                    }
+                }
+
+                if (IS_INT_CONST_ZERO(right)) {
+                    if (copts.optimize_for_size) {
+                        int tmpReg;
+                        tmpReg = ALLOC_GPR(); // affected
+                        emitpcode(PC_ADDIC, tmpReg, op2.reg, -1);
+                        reg = outputReg ? outputReg : ALLOC_GPR();
+                        emitpcode(PC_SUBFE, reg, tmpReg, op2.reg);
+                    } else {
+                        int tmpReg, tmpReg2;
+                        // tmpReg, tmpReg2 swap
+                        tmpReg = ALLOC_GPR();
+                        emitpcode(PC_NEG, tmpReg, op2.reg);
+                        tmpReg2 = ALLOC_GPR();
+                        emitpcode(PC_OR, tmpReg2, tmpReg, op2.reg);
+                        reg = outputReg ? outputReg : ALLOC_GPR();
+                        emitpcode(PC_RLWINM, reg, tmpReg2, 1, 31, 31);
+                    }
+                    output->optype = OpndType_GPR;
+                    output->reg = reg;
+                    return;
+                } else {
+                    if (copts.optimize_for_size) {
+                        int tmpReg, tmpReg2;
+                        // tmpReg, tmpReg2 swap
+                        tmpReg = ALLOC_GPR();
+                        emitpcode(PC_SUBF, tmpReg, op2.reg, op3.reg);
+                        tmpReg2 = ALLOC_GPR();
+                        emitpcode(PC_ADDIC, tmpReg2, tmpReg, -1);
+                        reg = outputReg ? outputReg : ALLOC_GPR();
+                        emitpcode(PC_SUBFE, reg, tmpReg2, tmpReg);
+                    } else {
+                        int tmpReg, tmpReg2, tmpReg3;
+                        // tmpReg, tmpReg2 swap
+                        tmpReg = ALLOC_GPR();
+                        emitpcode(PC_SUBF, tmpReg, op2.reg, op3.reg);
+                        tmpReg2 = ALLOC_GPR();
+                        emitpcode(PC_SUBF, tmpReg2, op3.reg, op2.reg);
+                        tmpReg3 = ALLOC_GPR();
+                        emitpcode(PC_OR, tmpReg3, tmpReg, tmpReg2);
+                        reg = outputReg ? outputReg : ALLOC_GPR();
+                        emitpcode(PC_RLWINM, reg, tmpReg3, 1, 31, 31);
+                    }
+                    output->optype = OpndType_GPR;
+                    output->reg = reg;
+                    return;
+                }
+
+            case EGREATEREQU:
+                if (!is_unsigned(left->rtype) && IS_INT_CONST_ZERO(right)) {
+                    int tmpReg;
+                    tmpReg = ALLOC_GPR();
+                    emitpcode(PC_RLWINM, tmpReg, op2.reg, 1, 31, 31);
+                    reg = outputReg ? outputReg : ALLOC_GPR();
+                    emitpcode(PC_XORI, reg, tmpReg, 1);
+                    output->optype = OpndType_GPR;
+                    output->reg = reg;
+                    return;
+                }
+                op4 = op3;
+                op3 = op2;
+                op2 = op4;
+            case ELESSEQU:
+                if (is_unsigned(left->rtype)) {
+                    if (copts.optimize_for_size) {
+                        int tmpReg, tmpReg2;
+                        tmpReg = ALLOC_GPR();
+                        emitpcode(PC_LI, tmpReg, -1);
+                        tmpReg2 = ALLOC_GPR();
+                        emitpcode(PC_SUBFC, tmpReg2, op2.reg, op3.reg);
+                        reg = outputReg ? outputReg : ALLOC_GPR();
+                        emitpcode(PC_SUBFZE, reg, tmpReg);
+                    } else {
+                        int tmpReg, tmpReg2, tmpReg3, tmpReg4;
+                        tmpReg = ALLOC_GPR();
+                        emitpcode(PC_SUBF, tmpReg, op2.reg, op3.reg);
+                        tmpReg2 = ALLOC_GPR();
+                        emitpcode(PC_ORC, tmpReg2, op3.reg, op2.reg);
+                        tmpReg3 = ALLOC_GPR();
+                        emitpcode(PC_RLWINM, tmpReg3, tmpReg, 31, 1, 31);
+                        tmpReg4 = ALLOC_GPR();
+                        emitpcode(PC_SUBF, tmpReg4, tmpReg3, tmpReg2);
+                        reg = outputReg ? outputReg : ALLOC_GPR();
+                        emitpcode(PC_RLWINM, reg, tmpReg4, 1, 31, 31);
+                    }
+                    output->optype = OpndType_GPR;
+                    output->reg = reg;
+                    return;
+                }
+
+                if (IS_INT_CONST_ZERO(right)) {
+                    int tmpReg, tmpReg2;
+                    tmpReg = ALLOC_GPR();
+                    emitpcode(PC_LI, tmpReg, 1);
+                    tmpReg2 = ALLOC_GPR();
+                    emitpcode(PC_CNTLZW, tmpReg2, op2.reg);
+                    reg = outputReg ? outputReg : ALLOC_GPR();
+                    emitpcode(PC_RLWNM, reg, tmpReg, tmpReg2, 31, 31);
+                    output->optype = OpndType_GPR;
+                    output->reg = reg;
+                    return;
+                } else {
+                    int tmpReg, tmpReg2, tmpReg3;
+                    tmpReg2 = ALLOC_GPR();
+                    emitpcode(PC_SRAWI, tmpReg2, op3.reg, 31);
+                    tmpReg = ALLOC_GPR();
+                    emitpcode(PC_RLWINM, tmpReg, op2.reg, 1, 31, 31);
+                    tmpReg3 = ALLOC_GPR();
+                    emitpcode(PC_SUBFC, tmpReg3, op2.reg, op3.reg);
+                    reg = outputReg ? outputReg : ALLOC_GPR();
+                    emitpcode(PC_ADDE, reg, tmpReg2, tmpReg);
+                    output->optype = OpndType_GPR;
+                    output->reg = reg;
+                    return;
+                }
+
+            case EGREATER:
+                if (!is_unsigned(left->rtype) && IS_INT_CONST_ZERO(right)) {
+                    int tmpReg, tmpReg2;
+                    tmpReg = ALLOC_GPR();
+                    emitpcode(PC_NEG, tmpReg, op2.reg);
+                    tmpReg2 = ALLOC_GPR();
+                    emitpcode(PC_ANDC, tmpReg2, tmpReg, op2.reg);
+                    reg = outputReg ? outputReg : ALLOC_GPR();
+                    emitpcode(PC_RLWINM, reg, tmpReg2, 1, 31, 31);
+                    output->optype = OpndType_GPR;
+                    output->reg = reg;
+                    return;
+                }
+
+                op4 = op3;
+                op3 = op2;
+                op2 = op4;
+            case ELESS:
+                if (is_unsigned(left->rtype)) {
+                    if (left->rtype->size <= 2) {
+                        int tmpReg;
+                        tmpReg = ALLOC_GPR();
+                        emitpcode(PC_SUBF, tmpReg, op3.reg, op2.reg);
+                        reg = outputReg ? outputReg : ALLOC_GPR();
+                        emitpcode(PC_RLWINM, reg, tmpReg, 1, 31, 31);
+                        output->optype = OpndType_GPR;
+                        output->reg = reg;
+                    } else {
+                        if (copts.optimize_for_size) {
+                            int tmpReg, tmpReg2;
+                            tmpReg = ALLOC_GPR();
+                            emitpcode(PC_SUBFC, tmpReg, op3.reg, op2.reg);
+                            tmpReg2 = ALLOC_GPR();
+                            emitpcode(PC_SUBFE, tmpReg2, tmpReg, tmpReg);
+                            reg = outputReg ? outputReg : ALLOC_GPR();
+                            emitpcode(PC_NEG, reg, tmpReg2);
+                        } else {
+                            int tmpReg, tmpReg2, tmpReg3;
+                            tmpReg = ALLOC_GPR();
+                            emitpcode(PC_XOR, tmpReg, op3.reg, op2.reg);
+                            tmpReg2 = ALLOC_GPR();
+                            emitpcode(PC_CNTLZW, tmpReg2, tmpReg);
+                            tmpReg3 = ALLOC_GPR();
+                            emitpcode(PC_SLW, tmpReg3, op3.reg, tmpReg2);
+                            reg = outputReg ? outputReg : ALLOC_GPR();
+                            emitpcode(PC_RLWINM, reg, tmpReg3, 1, 31, 31);
+                        }
+                        output->optype = OpndType_GPR;
+                        output->reg = reg;
+                        return;
+                    }
+                    return;
+                } else {
+                    if (IS_INT_CONST_ZERO(right)) {
+                        reg = outputReg ? outputReg : ALLOC_GPR();
+                        emitpcode(PC_RLWINM, reg, op2.reg, 1, 31, 31);
+                        output->optype = OpndType_GPR;
+                        output->reg = reg;
+                        return;
+                    } else {
+                        int tmpReg, tmpReg2, tmpReg3, tmpReg4;
+                        tmpReg = ALLOC_GPR();
+                        emitpcode(PC_XOR, tmpReg, op3.reg, op2.reg);
+                        tmpReg2 = ALLOC_GPR();
+                        emitpcode(PC_SRAWI, tmpReg2, tmpReg, 1);
+                        tmpReg3 = ALLOC_GPR();
+                        emitpcode(PC_AND, tmpReg3, tmpReg, op3.reg);
+                        tmpReg4 = ALLOC_GPR();
+                        emitpcode(PC_SUBF, tmpReg4, tmpReg3, tmpReg2);
+
+                        reg = outputReg ? outputReg : ALLOC_GPR();
+                        emitpcode(PC_RLWINM, reg, tmpReg4, 1, 31, 31);
+                        output->optype = OpndType_GPR;
+                        output->reg = reg;
+                        return;
+                    }
+                }
+
+            default:
+#line 5777
+                CError_FATAL();
+        }
+    }
+
+    gen_condition(cond, &op1);
+    emitpcode(PC_MFCR, tmpReg = used_virtual_registers[RegClass_GPR]++);
+    a = 0;
+    b = op1.reg * 4;
+    switch (op1.regOffset) {
+        case ENOTEQU:
+            a = 1;
+        case EEQU:
+            b += 2;
+            break;
+        case EGREATEREQU:
+            a = 1;
+            break;
+        case ELESSEQU:
+            a = 1;
+        case EGREATER:
+            b += 1;
+            break;
+    }
+
+    reg = outputReg ? outputReg : ALLOC_GPR();
+    if (a) {
+        emitpcode(PC_RLWINM, tmpReg, tmpReg, b + 1, 31, 31);
+        emitpcode(PC_XORI, reg, tmpReg, 1);
+    } else {
+        emitpcode(PC_RLWINM, reg, tmpReg, b + 1, 31, 31);
+    }
+    output->optype = OpndType_GPR;
+    output->reg = reg;
+}
+
+void gen_negated_condition_gpr(ENode *cond, Operand *output, short outputReg) {
+}
+
+void compare_floating(short nt, ENode *left, ENode *right, Operand *output) {
+    Operand opleft;
+    Operand opright;
+
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+
+    if (right->hascall) {
+        GEN_NODE_TO_FPR(right, &opright, right->rtype, 0);
+        GEN_NODE_TO_FPR(left, &opleft, left->rtype, 0);
+    } else {
+        GEN_NODE_TO_FPR(left, &opleft, left->rtype, 0);
+        GEN_NODE_TO_FPR(right, &opright, right->rtype, 0);
+    }
+
+    emitpcode((nt == EEQU || nt == ENOTEQU) ? PC_FCMPU : PC_FCMPO, 0, opleft.reg, opright.reg);
+    if (nt == ELESSEQU) {
+        emitpcode(PC_CROR, 0, 2, 0, 0, 0, 2);
+        nt = EEQU;
+    } else if (nt == EGREATEREQU) {
+        emitpcode(PC_CROR, 0, 2, 0, 1, 0, 2);
+        nt = EEQU;
+    }
+
+    output->optype = OpndType_CRField;
+    output->reg = 0;
+    output->regOffset = nt;
+}
+
+void compare_integer(short nt, ENode *left, ENode *right, Operand *output) {
+    Operand opleft;
+    Operand opright;
+
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+
+    if (right->hascall) {
+        GEN_NODE(right, &opright);
+        if (right->rtype->size < 4)
+            extend32(&opright, right->rtype, 0);
+        ENSURE_GPR(&opright, right->rtype, 0);
+
+        GEN_NODE(left, &opleft);
+        if (left->rtype->size < 4)
+            extend32(&opleft, left->rtype, 0);
+        ENSURE_GPR(&opleft, left->rtype, 0);
+    } else {
+        GEN_NODE(left, &opleft);
+        ENSURE_GPR(&opleft, left->rtype, 0);
+        if (left->rtype->size < 4)
+            extend32(&opleft, left->rtype, 0);
+
+        GEN_NODE(right, &opright);
+        if (right->rtype->size < 4)
+            extend32(&opright, right->rtype, 0);
+        ENSURE_GPR(&opright, right->rtype, 0);
+    }
+
+    emitpcode(is_unsigned(left->rtype) ? PC_CMPL : PC_CMP, 0, opleft.reg, opright.reg);
+
+    output->optype = OpndType_CRField;
+    output->reg = 0;
+    output->regOffset = nt;
+}
+
+void compare_immediate(short nt, ENode *left, SInt32 value, Operand *output) {
+}
+
+void compare_immediate_long(short nt, ENode *left, SInt32 value, Operand *output) {
+}
+
+static int ismask(SInt32 value, short *first, short *last) {
+    int start, end, bit;
+    start = end = -1;
+    for (bit = 31; bit >= 0; bit--) {
+        if (value & 1) {
+            if (start != -1)
+                return 0;
+            if (end == -1)
+                end = bit;
+        } else {
+            if (end != -1 && start == -1)
+                start = bit + 1;
+        }
+        value >>= 1;
+    }
+
+    if (end == -1)
+        return 0;
+    if (start == -1)
+        start = 0;
+    *first = start;
+    *last = end;
+    return 1;
+}
+
+int ismaskconstant(SInt32 value, short *first, short *last) {
+    short my_first;
+    short my_last;
+    if (ismask(value, first, last))
+        return 1;
+
+    if (value && ismask(~value, &my_first, &my_last)) {
+        *first = my_last + 1;
+        *last = my_first - 1;
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+static void shift_and_mask(ENode *expr, short a, short b, short c, short outputReg, Operand *output) {
+    Operand op;
+    int reg;
+
+    memclrw(&op, sizeof(Operand));
+    GEN_NODE(expr, &op);
+    ENSURE_GPR(&op, expr->rtype, 0);
+
+    reg = outputReg ? outputReg : ALLOC_GPR();
+    emitpcode(PC_RLWINM, reg, op.reg, a, b, c);
+
+    output->optype = OpndType_GPR;
+    output->reg = reg;
+}
+
+int ispostincrementopportunity(ENode *expr, Operand *op, SInt32 *value) {
+    Type *type;
+    int reg;
+
+    type = expr->rtype;
+    if (!ENODE_IS2(expr, EPOSTINC, EPOSTDEC))
+        return 0;
+    if (!ENODE_IS(expr->data.monadic, EINDIRECT))
+        return 0;
+    if (!ENODE_IS(expr->data.monadic->data.monadic, EOBJREF))
+        return 0;
+
+    reg = OBJECT_REG(expr->data.monadic->data.monadic->data.objref);
+    if (!reg)
+        return 0;
+
+    if (IS_TYPE_POINTER(type)) {
+        if (ENODE_IS(expr, EPOSTINC))
+            *value = TPTR_TARGET(type)->size;
+        else
+            *value = -TPTR_TARGET(type)->size;
+    } else {
+        if (ENODE_IS(expr, EPOSTINC))
+            *value = 1;
+        else
+            *value = -1;
+    }
+
+    op->optype = OpndType_GPR;
+    op->reg = reg;
+    return 1;
+}
+
+void add_register_immediate(short regA, short regB, SInt32 value) {
+    if (!FITS_IN_SHORT(value)) {
+        emitpcode(PC_ADDIS, regA, regB, 0, HIGH_PART(value));
+        if (LOW_PART(value))
+            emitpcode(PC_ADDI, regA, regA, 0, LOW_PART(value));
+    } else {
+        emitpcode(PC_ADDI, regA, regB, 0, value);
+    }
+}
+
+static int ispowerof2(SInt32 val) {
+    int bit = getbit(val);
+    return (bit > 0 && bit < 31) ? bit : 0;
+}
+
+void I8_gen_ADD(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    int is_uns;
+    ENode *left;
+    ENode *right;
+    short reg;
+    short regHi;
+    short tmpreg1;
+    short tmpreg2;
+    SInt32 skipleft;
+    SInt32 skipright;
+    Operand opleft;
+    Operand opright;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+
+    if (right->hascall) {
+        GEN_NODE(right, &opright);
+        if (TYPE_IS_8BYTES(right->rtype))
+            coerce_to_register_pair(&opright, right->rtype, 0, 0);
+        else
+            ENSURE_GPR(&opright, right->rtype, 0);
+
+        GEN_NODE(left, &opleft);
+        if (TYPE_IS_8BYTES(left->rtype))
+            coerce_to_register_pair(&opleft, left->rtype, 0, 0);
+        else
+            ENSURE_GPR(&opleft, left->rtype, 0);
+    } else {
+        GEN_NODE(left, &opleft);
+        if (TYPE_IS_8BYTES(left->rtype))
+            coerce_to_register_pair(&opleft, left->rtype, 0, 0);
+        else
+            ENSURE_GPR(&opleft, left->rtype, 0);
+
+        GEN_NODE(right, &opright);
+        if (TYPE_IS_8BYTES(right->rtype))
+            coerce_to_register_pair(&opright, right->rtype, 0, 0);
+        else
+            ENSURE_GPR(&opright, right->rtype, 0);
+    }
+
+    reg = ALLOC_GPR();
+    regHi = ALLOC_GPR();
+    is_uns = is_unsigned(expr->rtype) != 0;
+    skipleft = GetSizeSkip(left);
+    skipright = GetSizeSkip(right);
+
+    if (skipleft < skipright) {
+        Operand tmpop;
+        SInt32 tmp;
+
+        expr->data.diadic.left = right;
+        expr->data.diadic.right = left;
+        left = expr->data.diadic.left;
+        right = expr->data.diadic.right;
+
+        tmpop = opright;
+        opright = opleft;
+        opleft = tmpop;
+
+        tmp = skipleft;
+        skipleft = skipright;
+        skipright = tmp;
+    }
+
+    switch (skipleft + skipright) {
+        case 1 + 1:
+        case 1 + 2:
+        case 2 + 2:
+            if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT2(left->data.intval.lo)) {
+                emitpcode(PC_ADDIC, reg, opright.reg, LOW_PART(left->data.intval.lo));
+            } else if (ENODE_IS(right, EINTCONST) && FITS_IN_SHORT2(right->data.intval.lo)) {
+                emitpcode(PC_ADDIC, reg, opleft.reg, LOW_PART(right->data.intval.lo));
+            } else {
+                emitpcode(PC_ADDC, reg, opleft.reg, opright.reg);
+            }
+            if (is_uns)
+                emitpcode(PC_LI, regHi, 0);
+            else
+                emitpcode(PC_SRAWI, regHi, reg, 31);
+            break;
+        case 1 + 4:
+        case 2 + 4:
+        case 4 + 4:
+            if (!is_uns) {
+                tmpreg1 = ALLOC_GPR();
+                tmpreg2 = ALLOC_GPR();
+                emitpcode(PC_SRAWI, tmpreg2, opleft.reg, 31);
+                emitpcode(PC_SRAWI, tmpreg1, opright.reg, 31);
+            }
+            if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT2(left->data.intval.lo)) {
+                emitpcode(PC_ADDIC, reg, opright.reg, LOW_PART(left->data.intval.lo));
+            } else if (ENODE_IS(right, EINTCONST) && FITS_IN_SHORT2(right->data.intval.lo)) {
+                emitpcode(PC_ADDIC, reg, opleft.reg, LOW_PART(right->data.intval.lo));
+            } else {
+                emitpcode(PC_ADDC, reg, opleft.reg, opright.reg);
+            }
+            if (is_uns) {
+                tmpreg1 = ALLOC_GPR();
+                emitpcode(PC_LI, tmpreg1, 0);
+                emitpcode(PC_ADDZE, regHi, tmpreg1);
+            } else {
+                emitpcode(PC_ADDE, regHi, tmpreg1, tmpreg2);
+            }
+            break;
+        case 1 + 8:
+        case 2 + 8:
+        case 4 + 8:
+#line 6933
+            CError_ASSERT(skipleft == 8);
+            if (!is_uns) {
+                tmpreg2 = ALLOC_GPR();
+                emitpcode(PC_SRAWI, tmpreg2, opright.reg, 31);
+            }
+            if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT2(left->data.intval.lo) && left->data.intval.hi == 0) {
+                emitpcode(PC_ADDIC, reg, opright.reg, LOW_PART(left->data.intval.lo));
+            } else if (ENODE_IS(right, EINTCONST) && FITS_IN_SHORT2(right->data.intval.lo) && right->data.intval.hi == 0) {
+                emitpcode(PC_ADDIC, reg, opleft.reg, LOW_PART(right->data.intval.lo));
+            } else {
+                emitpcode(PC_ADDC, reg, opleft.reg, opright.reg);
+            }
+            if (is_uns)
+                emitpcode(PC_ADDZE, regHi, opleft.regHi);
+            else
+                emitpcode(PC_ADDE, regHi, opleft.regHi, tmpreg2);
+            break;
+        case 8 + 8:
+            emitpcode(PC_ADDC, reg, opleft.reg, opright.reg);
+            emitpcode(PC_ADDE, regHi, opleft.regHi, opright.regHi);
+            break;
+        default:
+#line 6979
+            CError_FATAL();
+    }
+
+    output->optype = OpndType_GPRPair;
+    output->reg = reg;
+    output->regHi = regHi;
+}
+
+void I8_gen_INTCONST(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    short reg;
+    short regHi;
+
+    reg = outputReg ? outputReg : ALLOC_GPR();
+    regHi = outputRegHi ? outputRegHi : ALLOC_GPR();
+
+    load_immediate(reg, expr->data.intval.lo);
+    load_immediate(regHi, expr->data.intval.hi);
+
+    output->optype = OpndType_GPRPair;
+    output->reg = reg;
+    output->regHi = regHi;
+}
+
+void I8_gen_SUB(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    int is_uns;
+    ENode *left;
+    ENode *right;
+    short reg;
+    short regHi;
+    short tmpreg1;
+    short tmpreg2;
+    short tmpreg3;
+    SInt32 skipleft;
+    SInt32 skipright;
+    Operand opleft;
+    Operand opright;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+
+    if (right->hascall) {
+        GEN_NODE(right, &opright);
+        if (TYPE_IS_8BYTES(right->rtype))
+            coerce_to_register_pair(&opright, right->rtype, 0, 0);
+        else
+            ENSURE_GPR(&opright, right->rtype, 0);
+
+        GEN_NODE(left, &opleft);
+        if (TYPE_IS_8BYTES(left->rtype))
+            coerce_to_register_pair(&opleft, left->rtype, 0, 0);
+        else
+            ENSURE_GPR(&opleft, left->rtype, 0);
+    } else {
+        GEN_NODE(left, &opleft);
+        if (TYPE_IS_8BYTES(left->rtype))
+            coerce_to_register_pair(&opleft, left->rtype, 0, 0);
+        else
+            ENSURE_GPR(&opleft, left->rtype, 0);
+
+        GEN_NODE(right, &opright);
+        if (TYPE_IS_8BYTES(right->rtype))
+            coerce_to_register_pair(&opright, right->rtype, 0, 0);
+        else
+            ENSURE_GPR(&opright, right->rtype, 0);
+    }
+
+    reg = ALLOC_GPR();
+    regHi = ALLOC_GPR();
+    is_uns = is_unsigned(expr->rtype) != 0;
+    skipleft = GetSizeSkip(left);
+    skipright = GetSizeSkip(right);
+
+    switch (skipleft + skipright) {
+        case 1 + 1:
+        case 1 + 2:
+        case 2 + 2:
+            if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT2(left->data.intval.lo)) {
+                emitpcode(PC_SUBFIC, reg, opright.reg, LOW_PART(left->data.intval.lo));
+            } else {
+                emitpcode(PC_SUBFC, reg, opright.reg, opleft.reg);
+            }
+            if (is_uns)
+                emitpcode(PC_LI, regHi, 0);
+            else
+                emitpcode(PC_SRAWI, regHi, reg, 31);
+            break;
+        case 1 + 4:
+        case 2 + 4:
+        case 4 + 4:
+            if (!is_uns) {
+                tmpreg1 = ALLOC_GPR();
+                tmpreg2 = ALLOC_GPR();
+                emitpcode(PC_SRAWI, tmpreg2, opleft.reg, 31);
+                emitpcode(PC_SRAWI, tmpreg1, opright.reg, 31);
+            }
+            if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT2(left->data.intval.lo)) {
+                emitpcode(PC_SUBFIC, reg, opright.reg, LOW_PART(left->data.intval.lo));
+            } else {
+                emitpcode(PC_SUBFC, reg, opright.reg, opleft.reg);
+            }
+            if (is_uns) {
+                tmpreg1 = ALLOC_GPR();
+                emitpcode(PC_LI, tmpreg1, 0);
+                emitpcode(PC_SUBFZE, regHi, tmpreg1);
+            } else {
+                emitpcode(PC_SUBFE, regHi, tmpreg1, tmpreg2);
+            }
+            break;
+        case 1 + 8:
+        case 2 + 8:
+        case 4 + 8:
+            if (skipleft < skipright) {
+                emitpcode(PC_SUBFC, reg, opright.reg, opleft.reg);
+                emitpcode(PC_SUBFE, regHi, opright.regHi, opleft.regHi);
+            } else {
+                if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT2(left->data.intval.lo) && left->data.intval.hi == 0) {
+                    emitpcode(PC_SUBFIC, reg, opright.reg, LOW_PART(left->data.intval.lo));
+                } else {
+                    emitpcode(PC_SUBFC, reg, opright.reg, opleft.reg);
+                }
+                tmpreg1 = ALLOC_GPR();
+                emitpcode(PC_LI, tmpreg1, 0);
+                emitpcode(PC_SUBFE, regHi, tmpreg1, opleft.regHi);
+            }
+            break;
+        case 8 + 8:
+            emitpcode(PC_SUBFC, reg, opright.reg, opleft.reg);
+            emitpcode(PC_SUBFE, regHi, opright.regHi, opleft.regHi);
+            break;
+        default:
+#line 7211
+            CError_FATAL();
+    }
+
+    output->optype = OpndType_GPRPair;
+    output->reg = reg;
+    output->regHi = regHi;
+}
+
+void I8_gen_XOR(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+}
+
+void I8_gen_OR(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+}
+
+void I8_gen_AND(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+}
+
+int I8_getbit(UInt64 val) {
+    switch (val) {
+        case 0: return -1;
+        case 1ULL << 0: return 0;
+        case 1ULL << 1: return 1;
+        case 1ULL << 2: return 2;
+        case 1ULL << 3: return 3;
+        case 1ULL << 4: return 4;
+        case 1ULL << 5: return 5;
+        case 1ULL << 6: return 6;
+        case 1ULL << 7: return 7;
+        case 1ULL << 8: return 8;
+        case 1ULL << 9: return 9;
+        case 1ULL << 10: return 10;
+        case 1ULL << 11: return 11;
+        case 1ULL << 12: return 12;
+        case 1ULL << 13: return 13;
+        case 1ULL << 14: return 14;
+        case 1ULL << 15: return 15;
+        case 1ULL << 16: return 16;
+        case 1ULL << 17: return 17;
+        case 1ULL << 18: return 18;
+        case 1ULL << 19: return 19;
+        case 1ULL << 20: return 20;
+        case 1ULL << 21: return 21;
+        case 1ULL << 22: return 22;
+        case 1ULL << 23: return 23;
+        case 1ULL << 24: return 24;
+        case 1ULL << 25: return 25;
+        case 1ULL << 26: return 26;
+        case 1ULL << 27: return 27;
+        case 1ULL << 28: return 28;
+        case 1ULL << 29: return 29;
+        case 1ULL << 30: return 30;
+        case 1ULL << 31: return 31;
+        case 1ULL << 32: return 32;
+        case 1ULL << 33: return 33;
+        case 1ULL << 34: return 34;
+        case 1ULL << 35: return 35;
+        case 1ULL << 36: return 36;
+        case 1ULL << 37: return 37;
+        case 1ULL << 38: return 38;
+        case 1ULL << 39: return 39;
+        case 1ULL << 40: return 40;
+        case 1ULL << 41: return 41;
+        case 1ULL << 42: return 42;
+        case 1ULL << 43: return 43;
+        case 1ULL << 44: return 44;
+        case 1ULL << 45: return 45;
+        case 1ULL << 46: return 46;
+        case 1ULL << 47: return 47;
+        case 1ULL << 48: return 48;
+        case 1ULL << 49: return 49;
+        case 1ULL << 50: return 50;
+        case 1ULL << 51: return 51;
+        case 1ULL << 52: return 52;
+        case 1ULL << 53: return 53;
+        case 1ULL << 54: return 54;
+        case 1ULL << 55: return 55;
+        case 1ULL << 56: return 56;
+        case 1ULL << 57: return 57;
+        case 1ULL << 58: return 58;
+        case 1ULL << 59: return 59;
+        case 1ULL << 60: return 60;
+        case 1ULL << 61: return 61;
+        case 1ULL << 62: return 62;
+        case 1ULL << 63: return 63;
+        default: return -2;
+    }
+}
+
+int I8_log2n(UInt64 val) {
+    int bit = I8_getbit(val);
+    return (bit > 0 && bit < 63) ? bit : 0;
+}
+
+void I8_ShiftLeftImmediate(Operand opnd, SInt32 value, int is_unsigned, SInt32 size, short reg, short regHi) {
+    if (opnd.reg == reg || opnd.regHi == regHi || opnd.reg == regHi || opnd.regHi == reg) {
+#line 7703
+        CError_FATAL();
+    }
+
+    if (value < 32) {
+        emitpcode(PC_RLWINM, reg, opnd.reg, value, 0, 31 - value);
+        if (size > 4) {
+            emitpcode(PC_RLWINM, regHi, opnd.regHi, value, 0, 31 - value);
+            emitpcode(PC_RLWIMI, regHi, opnd.reg, value, 32 - value, 31);
+        } else {
+            emitpcode(PC_RLWINM, regHi, opnd.reg, value, 32 - value, 31);
+        }
+    } else if (value <= 63) {
+        if (value == 32)
+            emitpcode(PC_MR, regHi, opnd.reg);
+        else
+            emitpcode(PC_RLWINM, regHi, opnd.reg, value - 32, 0, 63 - value);
+        emitpcode(PC_LI, reg, 0);
+    } else {
+#line 7732
+        CError_FATAL();
+    }
+}
+
+void I8_ShiftRightImmediate(Operand opnd, SInt32 value, int is_unsigned, short reg, short regHi, int unk) {
+    short tmpreg1;
+    short tmpreg2;
+    short tmpreg3;
+    short tmpreg4;
+
+    if (opnd.reg == reg || opnd.regHi == regHi || opnd.reg == regHi || opnd.regHi == reg) {
+#line 7756
+        CError_FATAL();
+    }
+
+    if (value < 32) {
+        emitpcode(PC_RLWINM, reg, opnd.reg, 32 - value, 0, 31);
+        emitpcode(PC_RLWIMI, reg, opnd.regHi, 32 - value, 0, value - 1);
+        if (is_unsigned) {
+            emitpcode(PC_RLWINM, regHi, opnd.regHi, 32 - value, value, 31);
+        } else if (unk) {
+            tmpreg1 = ALLOC_GPR();
+            emitpcode(PC_MR, tmpreg1, opnd.regHi);
+            emitpcode(PC_RLWIMI, tmpreg1, opnd.reg, 0, 31 - (value - 1), 31);
+            emitpcode(PC_SRAWI, regHi, tmpreg1, value);
+        } else {
+            emitpcode(PC_SRAWI, regHi, opnd.regHi, value);
+        }
+    } else if (value == 32) {
+        if (is_unsigned) {
+            emitpcode(PC_MR, reg, opnd.regHi);
+            emitpcode(PC_LI, regHi, 0);
+        } else if (unk) {
+            tmpreg1 = ALLOC_GPR();
+            tmpreg2 = ALLOC_GPR();
+            tmpreg3 = ALLOC_GPR();
+            emitpcode(PC_NEG, tmpreg1, opnd.reg);
+            emitpcode(PC_OR, tmpreg2, tmpreg1, opnd.reg);
+            emitpcode(PC_RLWINM, tmpreg3, tmpreg2, 1, 31, 31);
+            emitpcode(PC_RLWIMI, tmpreg3, opnd.regHi, 0, 0, 0);
+            emitpcode(PC_MR, reg, opnd.regHi);
+            emitpcode(PC_SRAWI, regHi, value, 31);
+        } else {
+            emitpcode(PC_MR, reg, opnd.regHi);
+            emitpcode(PC_SRAWI, regHi, opnd.regHi, 31);
+        }
+    } else if (value <= 63) {
+        if (is_unsigned) {
+            emitpcode(PC_RLWINM, reg, opnd.regHi, 64 - value, value - 32, 31);
+            emitpcode(PC_LI, regHi, 0);
+        } else if (unk) {
+            tmpreg1 = ALLOC_GPR();
+            tmpreg2 = ALLOC_GPR();
+            tmpreg3 = ALLOC_GPR();
+            tmpreg4 = ALLOC_GPR();
+            emitpcode(PC_NEG, tmpreg1, opnd.reg);
+            emitpcode(PC_OR, tmpreg2, tmpreg1, opnd.reg);
+            emitpcode(PC_RLWINM, tmpreg3, tmpreg2, 1, 31, 31);
+            emitpcode(PC_OR, tmpreg4, opnd.regHi, tmpreg3);
+            emitpcode(PC_SRAWI, regHi, opnd.regHi, 31);
+            emitpcode(PC_SRAWI, reg, tmpreg4, value - 32);
+        } else {
+            emitpcode(PC_SRAWI, reg, opnd.regHi, value - 32);
+            emitpcode(PC_SRAWI, regHi, opnd.regHi, 31);
+        }
+    } else {
+#line 7866
+        CError_FATAL();
+    }
+}
+
+void I8_gen_MUL(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    int is_uns;
+    ENode *left;
+    ENode *right;
+    short reg;
+    short regHi;
+    short tmpreg1;
+    short tmpreg2;
+    short tmpreg3;
+    short tmpreg4;
+    SInt32 skipleft;
+    SInt32 skipright;
+    Operand opleft;
+    Operand opright;
+    SInt64 leftval;
+    SInt64 rightval;
+    int shift;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+    skipleft = GetSizeSkip(left);
+    skipright = GetSizeSkip(right);
+
+    if (ENODE_IS(right, EINTCONST) && ENODE_IS(left, EINTCONST)) {
+#line 7900
+        CError_FATAL();
+    }
+
+    if (ENODE_IS(left, EINTCONST))
+        leftval = left->data.intval.lo + (((SInt64) ((skipleft < 8) ? 0 : left->data.intval.hi)) << 32);
+    if (ENODE_IS(right, EINTCONST))
+        rightval = right->data.intval.lo + (((SInt64) ((skipright < 8) ? 0 : right->data.intval.hi)) << 32);
+
+    if (right->hascall) {
+        GEN_NODE(right, &opright);
+        if (TYPE_IS_8BYTES(right->rtype))
+            coerce_to_register_pair(&opright, right->rtype, 0, 0);
+        else
+            ENSURE_GPR(&opright, right->rtype, 0);
+
+        if (!(ENODE_IS(left, EINTCONST) && I8_log2n(leftval) > 0)) {
+            GEN_NODE(left, &opleft);
+            if (TYPE_IS_8BYTES(left->rtype))
+                coerce_to_register_pair(&opleft, left->rtype, 0, 0);
+            else
+                ENSURE_GPR(&opleft, left->rtype, 0);
+        }
+    } else {
+        if (!(ENODE_IS(left, EINTCONST) && I8_log2n(leftval) > 0)) {
+            GEN_NODE(left, &opleft);
+            if (TYPE_IS_8BYTES(left->rtype))
+                coerce_to_register_pair(&opleft, left->rtype, 0, 0);
+            else
+                ENSURE_GPR(&opleft, left->rtype, 0);
+        }
+
+        if (!(ENODE_IS(right, EINTCONST) && I8_log2n(rightval) > 0)) {
+            GEN_NODE(right, &opright);
+            if (TYPE_IS_8BYTES(right->rtype))
+                coerce_to_register_pair(&opright, right->rtype, 0, 0);
+            else
+                ENSURE_GPR(&opright, right->rtype, 0);
+        }
+    }
+
+    is_uns = is_unsigned(expr->rtype) != 0;
+
+    if (skipleft < skipright) {
+        Operand tmpop;
+        SInt64 tmp64;
+        SInt32 tmp;
+
+        expr->data.diadic.left = right;
+        expr->data.diadic.right = left;
+        left = expr->data.diadic.left;
+        right = expr->data.diadic.right;
+
+        tmpop = opright;
+        opright = opleft;
+        opleft = tmpop;
+
+        tmp64 = leftval;
+        leftval = rightval;
+        rightval = tmp64;
+
+        tmp = skipleft;
+        skipleft = skipright;
+        skipright = tmp;
+    }
+
+    reg = ALLOC_GPR();
+    regHi = ALLOC_GPR();
+
+    if (ENODE_IS(left, EINTCONST) && (shift = I8_log2n(leftval)) > 0) {
+        I8_ShiftLeftImmediate(opright, shift, is_uns, skipright, reg, regHi);
+    } else if (ENODE_IS(right, EINTCONST) && (shift = I8_log2n(rightval)) > 0) {
+        I8_ShiftLeftImmediate(opleft, shift, is_uns, skipleft, reg, regHi);
+    } else {
+        switch (skipleft + skipright) {
+            case 1 + 1:
+            case 1 + 2:
+            case 2 + 2:
+                if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT2(left->data.intval.lo)) {
+                    emitpcode(PC_MULLI, reg, opright.reg, LOW_PART(left->data.intval.lo));
+                } else if (ENODE_IS(right, EINTCONST) && FITS_IN_SHORT2(right->data.intval.lo)) {
+                    emitpcode(PC_MULLI, reg, opleft.reg, LOW_PART(right->data.intval.lo));
+                } else {
+                    emitpcode(PC_MULLW, reg, opleft.reg, opright.reg);
+                }
+                if (is_uns)
+                    emitpcode(PC_LI, regHi, 0);
+                else
+                    emitpcode(PC_SRAWI, regHi, reg, 31);
+                break;
+            case 1 + 4:
+            case 2 + 4:
+            case 4 + 4:
+                if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT2(left->data.intval.lo)) {
+                    emitpcode(PC_MULLI, reg, opright.reg, LOW_PART(left->data.intval.lo));
+                } else if (ENODE_IS(right, EINTCONST) && FITS_IN_SHORT2(right->data.intval.lo)) {
+                    emitpcode(PC_MULLI, reg, opleft.reg, LOW_PART(right->data.intval.lo));
+                } else {
+                    emitpcode(PC_MULLW, reg, opleft.reg, opright.reg);
+                }
+                if (is_uns)
+                    emitpcode(PC_MULHWU, regHi, opleft.reg, opright.reg);
+                else
+                    emitpcode(PC_MULHW, regHi, opleft.reg, opright.reg);
+                break;
+            case 1 + 8:
+            case 2 + 8:
+            case 4 + 8:
+#line 8097
+                CError_ASSERT(skipleft == 8);
+                if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT2(left->data.intval.lo) && left->data.intval.hi == 0) {
+                    emitpcode(PC_MULLI, reg, opright.reg, LOW_PART(left->data.intval.lo));
+                    if (is_uns)
+                        emitpcode(PC_MULHWU, regHi, opright.reg, opleft.reg);
+                    else
+                        emitpcode(PC_MULHW, regHi, opright.reg, opleft.reg);
+                } else if (ENODE_IS(right, EINTCONST) && FITS_IN_SHORT2(right->data.intval.lo) && right->data.intval.hi == 0) {
+                    tmpreg1 = ALLOC_GPR();
+                    tmpreg2 = ALLOC_GPR();
+                    if (is_uns) {
+                        emitpcode(PC_MULHWU, tmpreg2, opleft.reg, opright.reg);
+                        emitpcode(PC_MULLI, tmpreg1, opleft.regHi, LOW_PART(right->data.intval.lo));
+                        emitpcode(PC_MULLI, reg, opleft.reg, LOW_PART(right->data.intval.lo));
+                        emitpcode(PC_ADD, regHi, tmpreg2, tmpreg1);
+                    } else {
+                        tmpreg3 = ALLOC_GPR();
+                        tmpreg4 = ALLOC_GPR();
+                        emitpcode(PC_SRAWI, tmpreg4, opright.reg, 31);
+                        emitpcode(PC_MULHWU, tmpreg2, opleft.reg, opright.reg);
+                        emitpcode(PC_MULLI, tmpreg1, opleft.regHi, LOW_PART(right->data.intval.lo));
+                        emitpcode(PC_MULLI, reg, opleft.reg, LOW_PART(right->data.intval.lo));
+                        emitpcode(PC_MULLW, tmpreg3, opleft.reg, tmpreg4);
+                        emitpcode(PC_ADD, regHi, tmpreg2, tmpreg1);
+                        emitpcode(PC_ADD, regHi, regHi, tmpreg3);
+                    }
+                } else {
+                    tmpreg1 = ALLOC_GPR();
+                    tmpreg2 = ALLOC_GPR();
+                    if (is_uns) {
+                        emitpcode(PC_MULHWU, tmpreg2, opleft.reg, opright.reg);
+                        emitpcode(PC_MULLW, tmpreg1, opleft.regHi, opright.reg);
+                        emitpcode(PC_MULLW, reg, opleft.reg, opright.reg);
+                        emitpcode(PC_ADD, regHi, tmpreg2, tmpreg1);
+                    } else {
+                        tmpreg3 = ALLOC_GPR();
+                        tmpreg4 = ALLOC_GPR();
+                        emitpcode(PC_SRAWI, tmpreg4, opright.reg, 31);
+                        emitpcode(PC_MULHWU, tmpreg2, opleft.reg, opright.reg);
+                        emitpcode(PC_MULLW, tmpreg1, opleft.regHi, opright.reg);
+                        emitpcode(PC_MULLW, reg, opleft.reg, opright.reg);
+                        emitpcode(PC_MULLW, tmpreg3, opleft.reg, tmpreg4);
+                        emitpcode(PC_ADD, regHi, tmpreg2, tmpreg1);
+                        emitpcode(PC_ADD, regHi, regHi, tmpreg3);
+                    }
+                }
+                break;
+            case 8 + 8:
+                if (ENODE_IS(left, EINTCONST) && FITS_IN_SHORT2(left->data.intval.lo) && left->data.intval.hi == 0) {
+                    tmpreg1 = ALLOC_GPR();
+                    tmpreg2 = ALLOC_GPR();
+                    emitpcode(PC_MULHWU, tmpreg1, opright.reg, opleft.reg);
+                    emitpcode(PC_MULLW, tmpreg2, opright.reg, opleft.regHi);
+                    emitpcode(PC_MULLI, reg, opright.reg, LOW_PART(left->data.intval.lo));
+                    emitpcode(PC_ADD, regHi, tmpreg1, tmpreg2);
+                } else if (ENODE_IS(right, EINTCONST) && FITS_IN_SHORT2(right->data.intval.lo) && right->data.intval.hi == 0) {
+                    tmpreg1 = ALLOC_GPR();
+                    tmpreg2 = ALLOC_GPR();
+                    emitpcode(PC_MULHWU, tmpreg2, opleft.reg, opright.reg);
+                    emitpcode(PC_MULLW, tmpreg1, opleft.regHi, opright.reg);
+                    emitpcode(PC_MULLI, reg, opleft.reg, LOW_PART(right->data.intval.lo));
+                    emitpcode(PC_ADD, regHi, tmpreg2, tmpreg1);
+                } else {
+                    tmpreg1 = ALLOC_GPR();
+                    tmpreg2 = ALLOC_GPR();
+                    tmpreg3 = ALLOC_GPR();
+                    tmpreg4 = ALLOC_GPR();
+                    emitpcode(PC_MULHWU, tmpreg2, opleft.reg, opright.reg);
+                    emitpcode(PC_MULLW, tmpreg1, opleft.regHi, opright.reg);
+                    emitpcode(PC_ADD, tmpreg3, tmpreg2, tmpreg1);
+                    emitpcode(PC_MULLW, tmpreg4, opleft.reg, opright.regHi);
+                    emitpcode(PC_MULLW, reg, opleft.reg, opright.reg);
+                    emitpcode(PC_ADD, regHi, tmpreg3, tmpreg4);
+                }
+                break;
+            default:
+#line 8218
+                CError_FATAL();
+        }
+    }
+
+    output->optype = OpndType_GPRPair;
+    output->reg = reg;
+    output->regHi = regHi;
+}
+
+void I8_gen_BINNOT(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *inner;
+    Operand op;
+    int reg;
+    int regHi;
+
+    inner = expr->data.monadic;
+    memclrw(&op, sizeof(Operand));
+    GEN_NODE(inner, &op);
+    coerce_to_register_pair(&op, inner->rtype, 0, 0);
+
+    reg = outputReg ? outputReg : ALLOC_GPR();
+    regHi = outputRegHi ? outputRegHi : ALLOC_GPR();
+    emitpcode(PC_NOR, reg, op.reg, op.reg);
+    emitpcode(PC_NOR, regHi, op.regHi, op.regHi);
+
+    output->optype = OpndType_GPRPair;
+    output->reg = reg;
+    output->regHi = regHi;
+}
+
+void I8_gen_MONMIN(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *inner;
+    Operand op;
+    int reg;
+    int regHi;
+
+    inner = expr->data.monadic;
+    memclrw(&op, sizeof(Operand));
+    GEN_NODE(inner, &op);
+    coerce_to_register_pair(&op, inner->rtype, 0, 0);
+
+    reg = outputReg ? outputReg : ALLOC_GPR();
+    regHi = outputRegHi ? outputRegHi : ALLOC_GPR();
+    emitpcode(PC_SUBFIC, reg, op.reg, 0);
+    emitpcode(PC_SUBFZE, regHi, op.regHi);
+
+    output->optype = OpndType_GPRPair;
+    output->reg = reg;
+    output->regHi = regHi;
+}
+
+void I8_gen_ASS(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    Type *type;
+    ENode *left;
+    ENode *right;
+    Operand opleft;
+    Operand opright;
+    VarInfo *vi;
+
+    type = expr->rtype;
+    if (ENODE_IS(expr, ECONDASS)) {
+        left = expr->data.cond.expr1;
+        if (ENODE_IS(left, EINDIRECT)) {
+            left = left->data.monadic;
+        } else {
+#line 8328
+            CError_FATAL();
+        }
+        right = expr->data.cond.expr2;
+    } else {
+        left = expr->data.diadic.left;
+        right = expr->data.diadic.right;
+    }
+
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+
+    if (ENODE_IS(left, EOBJREF) && OBJECT_REG(left->data.objref)) {
+        vi = Registers_GetVarInfo(left->data.objref);
+        GEN_NODE_TO_REG(right, vi->reg, vi->regHi, &opright);
+        if (vi->rclass != RegClass_GPR) {
+#line 8348
+            CError_FATAL();
+        } else {
+            coerce_to_register_pair(&opright, type, vi->reg, vi->regHi);
+            *output = opright;
+        }
+        return;
+    }
+
+    if (TYPE_FITS_IN_REGISTER(type)) {
+        GEN_NODE(right, &opright);
+        coerce_to_register_pair(&opright, right->rtype, 0, 0);
+
+        if (ENODE_IS(left, EBITFIELD)) {
+#line 8376
+            CError_FATAL();
+        } else {
+            GEN_NODE(left, &opleft);
+            indirect(&opleft, left);
+            store_pair(opright.reg, opright.regHi, &opleft, type);
+        }
+
+        output->optype = OpndType_GPRPair;
+        output->reg = opright.reg;
+        output->regHi = opright.regHi;
+    }
+}
+
+void I8_gen_POSTINCDEC(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *inner;
+    Type *type;
+    int flag;
+    int reg;
+    int regHi;
+    Operand op1;
+    Operand op2;
+    Operand op3;
+
+    inner = expr->data.monadic->data.monadic;
+    type = expr->rtype;
+    flag = 0;
+    memclrw(&op1, sizeof(Operand));
+    memclrw(&op2, sizeof(Operand));
+
+    if (ENODE_IS(inner, EOBJREF) && (reg = OBJECT_REG(inner->data.objref))) {
+        regHi = Registers_GetVarInfo(inner->data.objref)->regHi;
+        output->optype = OpndType_GPRPair;
+        output->reg = (outputReg && outputReg != reg && outputReg != regHi) ? outputReg : ALLOC_GPR();
+        output->regHi = (outputRegHi && outputRegHi != regHi && outputRegHi != reg) ? outputRegHi : ALLOC_GPR();
+        emitpcode(PC_MR, output->reg, reg);
+        emitpcode(PC_MR, output->regHi, regHi);
+        if (ENODE_IS(expr, EPOSTINC)) {
+            emitpcode(PC_ADDIC, reg, reg, 1);
+            emitpcode(PC_ADDME, regHi, regHi);
+        } else {
+            emitpcode(PC_ADDIC, reg, reg, -1);
+            emitpcode(PC_ADDZE, regHi, regHi);
+        }
+        return;
+    }
+
+#line 8446
+    CError_ASSERT(!ENODE_IS(inner, EBITFIELD));
+
+    GEN_NODE(inner, &op1);
+    indirect(&op1, inner);
+    op2 = op1;
+    coerce_to_register_pair(&op2, type, 0, 0);
+
+    output->optype = OpndType_GPRPair;
+    output->reg = ALLOC_GPR();
+    output->regHi = ALLOC_GPR();
+
+    emitpcode(PC_MR, output->reg, op2.reg);
+    emitpcode(PC_MR, output->regHi, op2.regHi);
+
+    reg = ALLOC_GPR();
+    regHi = ALLOC_GPR();
+
+    if (ENODE_IS(expr, EPOSTINC)) {
+        emitpcode(PC_ADDIC, reg, op2.reg, 1);
+        emitpcode(PC_ADDZE, regHi, op2.regHi);
+    } else {
+        emitpcode(PC_ADDIC, reg, op2.reg, -1);
+        emitpcode(PC_ADDME, regHi, op2.regHi);
+    }
+    store_pair(reg, regHi, &op1, type);
+}
+
+void I8_gen_INDIRECT(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    ENode *inner;
+    VarInfo *vi;
+
+    inner = expr->data.monadic;
+    if (ENODE_IS(inner, EOBJREF) && OBJECT_REG(inner->data.objref)) {
+        vi = Registers_GetVarInfo(inner->data.objref);
+        switch (vi->rclass) {
+            case RegClass_GPR:
+                output->optype = OpndType_GPRPair;
+                break;
+            case RegClass_FPR:
+                output->optype = OpndType_FPR;
+                break;
+            default:
+#line 8511
+                CError_FATAL();
+        }
+
+        output->reg = vi->reg;
+        output->regHi = vi->regHi;
+        output->object = NULL;
+        return;
+    }
+
+    if (ENODE_IS(inner, EBITFIELD)) {
+#line 8529
+        CError_FATAL();
+        return;
+    }
+
+    GEN_NODE(inner, output);
+    indirect(output, inner);
+}
+
+void I8_gen_condition(ENode *cond, Operand *output, int write_to_gpr) {
+    ENode *left;
+    ENode *right;
+    Operand opleft;
+    Operand opright;
+    Operand tmpop;
+    int reg1;
+    int reg2;
+    int reg3;
+    int reg4;
+    int reg5;
+
+    left = cond->data.diadic.left;
+    right = cond->data.diadic.right;
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+    memclrw(&tmpop, sizeof(Operand));
+
+    if (right->hascall) {
+        GEN_NODE(right, &opright);
+        if (right->rtype->size < 4)
+            extend32(&opright, right->rtype, 0);
+        ENSURE_GPR(&opright, right->rtype, 0);
+
+        if (right->rtype->size < 8) {
+            short tmp = ALLOC_GPR();
+            if (is_unsigned(right->rtype))
+                load_immediate(tmp, 0);
+            else
+                emitpcode(PC_SRAWI, tmp, opright.reg, 31);
+            opright.optype = OpndType_GPRPair;
+            opright.regHi = tmp;
+        }
+
+        GEN_NODE(left, &opleft);
+        if (left->rtype->size < 4)
+            extend32(&opleft, left->rtype, 0);
+        ENSURE_GPR(&opleft, left->rtype, 0);
+
+        if (left->rtype->size < 8) {
+            short tmp = ALLOC_GPR();
+            // this looks like a bug??? surely this should check left->rtype
+            if (is_unsigned(right->rtype))
+                load_immediate(tmp, 0);
+            else
+                emitpcode(PC_SRAWI, tmp, opleft.reg, 31);
+            opleft.optype = OpndType_GPRPair;
+            opleft.regHi = tmp;
+        }
+    } else {
+        GEN_NODE(left, &opleft);
+        ENSURE_GPR(&opleft, left->rtype, 0);
+        if (left->rtype->size < 4)
+            extend32(&opleft, left->rtype, 0);
+
+        if (left->rtype->size < 8) {
+            short tmp = ALLOC_GPR();
+            if (is_unsigned(right->rtype))
+                load_immediate(tmp, 0);
+            else
+                emitpcode(PC_SRAWI, tmp, opleft.reg, 31);
+            opleft.optype = OpndType_GPRPair;
+            opleft.regHi = tmp;
+        }
+
+        GEN_NODE(right, &opright);
+        if (right->rtype->size < 4)
+            extend32(&opright, right->rtype, 0);
+        ENSURE_GPR(&opright, right->rtype, 0);
+
+        if (right->rtype->size < 8) {
+            short tmp = ALLOC_GPR();
+            if (is_unsigned(right->rtype))
+                load_immediate(tmp, 0);
+            else
+                emitpcode(PC_SRAWI, tmp, opright.reg, 31);
+            opright.optype = OpndType_GPRPair;
+            opright.regHi = tmp;
+        }
+    }
+
+#line 8704
+    CError_ASSERT(opleft.optype == OpndType_GPRPair && opright.optype == OpndType_GPRPair);
+
+    switch (cond->type) {
+        case EEQU:
+        case ENOTEQU:
+            reg1 = ALLOC_GPR();
+            reg2 = ALLOC_GPR();
+            emitpcode(PC_XOR, reg1, opleft.reg, opright.reg);
+            emitpcode(PC_XOR, reg2, opleft.regHi, opright.regHi);
+            emitpcode(PC_OR, reg2, reg1, reg2);
+            if (write_to_gpr) {
+                if (ENODE_IS(cond, EEQU)) {
+                    emitpcode(PC_CNTLZW, reg2, reg2);
+                    emitpcode(PC_RLWINM, reg2, reg2, 27, 5, 31);
+                } else {
+                    emitpcode(PC_ADDIC, reg1, reg2, -1);
+                    emitpcode(PC_SUBFE, reg2, reg1, reg2);
+                }
+                output->optype = OpndType_GPR;
+                output->reg = reg2;
+                output->regHi = 0;
+            } else {
+                emitpcode(PC_CMPI, 0, reg2, 0);
+                output->optype = OpndType_CRField;
+                output->reg = 0;
+                output->regOffset = cond->type;
+            }
+            break;
+        case EGREATER:
+            tmpop = opleft;
+            opleft = opright;
+            opright = tmpop;
+        case ELESS:
+            reg1 = ALLOC_GPR();
+            reg2 = ALLOC_GPR();
+            reg3 = ALLOC_GPR();
+            if (left->rtype != TYPE(&stunsignedlonglong) && right->rtype != TYPE(&stunsignedlonglong)) {
+                emitpcode(PC_XORIS, reg1, opleft.regHi, 0x8000);
+                emitpcode(PC_XORIS, reg2, opright.regHi, 0x8000);
+                reg4 = reg1;
+                reg5 = reg2;
+            } else {
+                reg4 = opleft.regHi;
+                reg5 = opright.regHi;
+            }
+            emitpcode(PC_SUBFC, reg3, opright.reg, opleft.reg);
+            emitpcode(PC_SUBFE, reg2, reg5, reg4);
+            emitpcode(PC_SUBFE, reg2, reg1, reg1);
+            emitpcode(PC_NEG, reg2, reg2);
+            if (write_to_gpr) {
+                output->optype = OpndType_GPR;
+                output->reg = reg2;
+                output->regHi = 0;
+            } else {
+                emitpcode(PC_CMPI, 0, reg2, 0);
+                output->optype = OpndType_CRField;
+                output->reg = 0;
+                output->regOffset = ENOTEQU;
+            }
+            break;
+        case ELESSEQU:
+            tmpop = opleft;
+            opleft = opright;
+            opright = tmpop;
+        case EGREATEREQU:
+            reg1 = ALLOC_GPR();
+            reg2 = ALLOC_GPR();
+            reg3 = ALLOC_GPR();
+            if (left->rtype != TYPE(&stunsignedlonglong) && right->rtype != TYPE(&stunsignedlonglong)) {
+                emitpcode(PC_XORIS, reg1, opleft.regHi, 0x8000);
+                emitpcode(PC_XORIS, reg2, opright.regHi, 0x8000);
+                reg4 = reg1;
+                reg5 = reg2;
+            } else {
+                reg4 = opleft.regHi;
+                reg5 = opright.regHi;
+            }
+            emitpcode(PC_SUBFC, reg3, opright.reg, opleft.reg);
+            emitpcode(PC_SUBFE, reg2, reg5, reg4);
+            emitpcode(PC_SUBFE, reg2, reg1, reg1);
+            emitpcode(PC_NEG, reg2, reg2);
+            if (write_to_gpr) {
+                emitpcode(PC_SUBFIC, reg2, reg2, 1);
+                output->optype = OpndType_GPR;
+                output->reg = reg2;
+                output->regHi = 0;
+            } else {
+                emitpcode(PC_CMPI, 0, reg2, 0);
+                output->optype = OpndType_CRField;
+                output->reg = 0;
+                output->regOffset = EEQU;
+            }
+            break;
+        default:
+#line 8814
+            CError_FATAL();
+    }
+}
+
+void I8_gen_SHL_SHR(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    static UInt32 used_regs[RegClassMax] = {0, 0, 0, 0, (1 << 3) | (1 << 4) | (1 << 5)};
+
+    ENode *left;
+    ENode *right;
+    Operand opleft;
+    Operand opright;
+    int is_uns;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+
+    GEN_NODE(left, &opleft);
+    coerce_to_register_pair(&opleft, left->rtype, 0, 0);
+
+    output->optype = OpndType_GPRPair;
+    output->reg = ALLOC_GPR();
+    output->regHi = ALLOC_GPR();
+
+    is_uns = is_unsigned(expr->rtype) != 0;
+
+    if (ENODE_IS(right, EINTCONST)) {
+        if (ENODE_IS(expr, ESHL)) {
+            I8_ShiftLeftImmediate(opleft, right->data.intval.lo, is_uns, expr->rtype->size, output->reg, output->regHi);
+        } else {
+            I8_ShiftRightImmediate(opleft, right->data.intval.lo, is_uns, output->reg, output->regHi, 0);
+        }
+        return;
+    }
+
+    GEN_NODE(right, &opright);
+    ENSURE_GPR(&opright, right->rtype, 0);
+    if (opright.optype == OpndType_GPRPair) {
+        opright.regHi = 0;
+        opright.optype = OpndType_GPR;
+    }
+
+#line 8890
+    CError_ASSERT(opleft.optype == OpndType_GPRPair && opright.optype == OpndType_GPR);
+
+    if (opleft.regHi != high_reg)
+        emitpcode(PC_MR, high_reg, opleft.regHi);
+    if (opleft.reg != low_reg)
+        emitpcode(PC_MR, low_reg, opleft.reg);
+    if (opright.reg != 5)
+        emitpcode(PC_MR, 5, opright.reg);
+
+    if (ENODE_IS(expr, ESHR)) {
+        if (is_unsigned(left->rtype))
+            branch_subroutine(rt_shr2u, 0, used_regs);
+        else
+            branch_subroutine(rt_shr2i, 0, used_regs);
+    } else if (ENODE_IS(expr, ESHL)) {
+        branch_subroutine(rt_shl2i, 0, used_regs);
+    } else {
+#line 8909
+        CError_FATAL();
+    }
+
+    emitpcode(PC_MR, output->reg, low_reg);
+    emitpcode(PC_MR, output->regHi, high_reg);
+}
+
+void I8_gen_DIV_MOD(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    static UInt32 used_regs[RegClassMax] = {0, 0, 0, 0, (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6)};
+
+    int is_uns;
+    ENode *left;
+    ENode *right;
+    Operand opleft;
+    Operand opright;
+    SInt64 constval;
+    int shift;
+
+    left = expr->data.diadic.left;
+    right = expr->data.diadic.right;
+    memclrw(&opleft, sizeof(Operand));
+    memclrw(&opright, sizeof(Operand));
+
+    GEN_NODE(left, &opleft);
+    coerce_to_register_pair(&opleft, left->rtype, 0, 0);
+
+    output->optype = OpndType_GPRPair;
+    output->reg = ALLOC_GPR();
+    output->regHi = ALLOC_GPR();
+
+    is_uns = is_unsigned(expr->rtype) != 0;
+
+    if (ENODE_IS(right, EINTCONST))
+        constval = (((SInt64) right->data.intval.hi) << 32) + right->data.intval.lo;
+    if (ENODE_IS(right, EINTCONST) && ((shift = I8_log2n(constval)) > 0)) {
+#line 8976
+        CError_ASSERT(opleft.optype == OpndType_GPRPair);
+        if (ENODE_IS(expr, EDIV)) {
+            I8_ShiftRightImmediate(opleft, shift, is_uns, output->reg, output->regHi, 1);
+            if (!is_uns) {
+                emitpcode(PC_ADDZE, output->reg, output->reg);
+                emitpcode(PC_ADDZE, output->regHi, output->regHi);
+            }
+        } else {
+            if (is_uns) {
+                if (shift < 32) {
+                    emitpcode(PC_LI, output->regHi, 0);
+                    emitpcode(PC_RLWINM, output->reg, opleft.reg, 0, 32 - shift, 31);
+                } else if (shift == 32) {
+                    emitpcode(PC_LI, output->regHi, 0);
+                    emitpcode(PC_MR, output->reg, opleft.reg);
+                } else if (shift <= 63) {
+                    emitpcode(PC_RLWINM, output->regHi, opleft.regHi, 0, 32 - (shift - 32), 31);
+                    emitpcode(PC_MR, output->reg, opleft.reg);
+                } else {
+#line 9018
+                    CError_FATAL();
+                }
+            } else {
+                short tmpreg1 = ALLOC_GPR();
+                short tmpreg2 = ALLOC_GPR();
+                I8_ShiftRightImmediate(opleft, shift, is_uns, output->reg, output->regHi, 1);
+                emitpcode(PC_ADDZE, output->reg, output->reg);
+                emitpcode(PC_ADDZE, output->regHi, output->regHi);
+                I8_ShiftLeftImmediate(*output, shift, is_uns, expr->rtype->size, tmpreg1, tmpreg2);
+                emitpcode(PC_SUBFC, output->reg, tmpreg1, opleft.reg);
+                emitpcode(PC_SUBFE, output->regHi, tmpreg2, opleft.regHi);
+            }
+        }
+        return;
+    }
+
+    GEN_NODE(right, &opright);
+    coerce_to_register_pair(&opright, right->rtype, 0, 0);
+
+#line 9048
+    CError_ASSERT(opleft.optype == OpndType_GPRPair && opright.optype == OpndType_GPRPair);
+
+    if (opleft.regHi != high_reg)
+        emitpcode(PC_MR, high_reg, opleft.regHi);
+    if (opleft.reg != low_reg)
+        emitpcode(PC_MR, low_reg, opleft.reg);
+    if (opright.regHi != high_reg2)
+        emitpcode(PC_MR, high_reg2, opright.regHi);
+    if (opright.reg != low_reg2)
+        emitpcode(PC_MR, low_reg2, opright.reg);
+
+    if (ENODE_IS(expr, EDIV)) {
+        if (is_unsigned(left->rtype) || is_unsigned(right->rtype))
+            branch_subroutine(rt_div2u, 0, used_regs);
+        else
+            branch_subroutine(rt_div2i, 0, used_regs);
+    } else if (ENODE_IS(expr, EMODULO)) {
+        if (is_unsigned(left->rtype) || is_unsigned(right->rtype))
+            branch_subroutine(rt_mod2u, 0, used_regs);
+        else
+            branch_subroutine(rt_mod2i, 0, used_regs);
+    } else {
+#line 9074
+        CError_FATAL();
+    }
+
+    emitpcode(PC_MR, output->reg, low_reg);
+    emitpcode(PC_MR, output->regHi, high_reg);
+}
+
+void I8_gen_TYPCON(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    Type *dsttype;
+    ENode *inner;
+    Type *srctype;
+    short regHi;
+    short reg;
+
+    static UInt32 used_regs[RegClassMax] = {0, 0, 0, 0, (1 << 3) | (1 << 4)};
+    static UInt32 used_regs_f1[RegClassMax] = {0, 0, 0, (1 << 1), 0};
+
+    inner = expr->data.monadic;
+    srctype = inner->rtype;
+    dsttype = expr->rtype;
+
+    if (IS_TYPE_VOID(dsttype)) {
+        GEN_NODE(inner, output);
+        if (ENODE_IS(inner, EINDIRECT) && (output->flags & OpndFlags_Volatile))
+            coerce_to_register_pair(output, inner->rtype, 0, 0);
+        output->optype = OpndType_Absolute;
+        output->immediate = 0;
+        return;
+    }
+
+    if (IS_TYPE_INT_OR_ENUM(srctype)) {
+        if (IS_TYPE_FLOAT(dsttype)) {
+            GEN_NODE(inner, output);
+            coerce_to_register_pair(output, srctype, 0, 0);
+            if (output->regHi != high_reg)
+                emitpcode(PC_MR, high_reg, output->regHi);
+            if (output->reg != low_reg)
+                emitpcode(PC_MR, low_reg, output->reg);
+
+            if (is_unsigned(srctype)) {
+                branch_subroutine(
+                        (dsttype->size == 4) ? rt_cvt_ull_flt : rt_cvt_ull_dbl,
+                        0,
+                        used_regs);
+            } else {
+                branch_subroutine(
+                        (dsttype->size == 4) ? rt_cvt_sll_flt : rt_cvt_sll_dbl,
+                        0,
+                        used_regs);
+            }
+
+            output->optype = OpndType_FPR;
+            output->reg = ALLOC_FPR();
+            emitpcode(PC_FMR, output->reg, 1);
+            return;
+        }
+
+        if (srctype->size < dsttype->size) {
+#line 9171
+            CError_ASSERT(TYPE_IS_8BYTES(dsttype));
+
+            GEN_NODE(inner, output);
+            if (srctype->size < 4 &&
+                    !ENODE_IS_INDIRECT_TO(inner, EBITFIELD) &&
+                    !((ENODE_IS_ASSIGN(inner) || ENODE_IS_RANGE(inner, EPOSTINC, EPREDEC)) && ENODE_IS(inner->data.monadic->data.monadic, EBITFIELD))
+                    ) {
+                extend32(output, srctype, outputReg);
+            }
+            extend64(output, srctype, outputReg, outputRegHi);
+        } else {
+            GEN_NODE_TO_REG(inner, outputReg, 0, output);
+            if (dsttype->size < srctype->size) {
+                coerce_to_register_pair(output, srctype, outputReg, outputRegHi);
+                output->optype = OpndType_GPR;
+                output->regHi = 0;
+            }
+        }
+        return;
+    }
+
+    if (IS_TYPE_POINTER(srctype)) {
+        GEN_NODE_TO_REG(inner, outputReg, 0, output);
+#line 9200
+        CError_ASSERT(TYPE_IS_8BYTES(expr->rtype));
+        GEN_NODE_TO_REG(inner, outputReg, 0, output);
+
+        regHi = outputRegHi ? outputRegHi : ALLOC_GPR();
+        if (regHi == output->reg) {
+            reg = outputReg ? outputReg : ALLOC_GPR();
+            emitpcode(PC_MR, reg, output->reg);
+            output->reg = reg;
+        }
+        if (is_unsigned(inner->rtype))
+            load_immediate(regHi, 0);
+        else
+            emitpcode(PC_SRAWI, regHi, output->reg, 31);
+        output->optype = OpndType_GPRPair;
+        output->regHi = regHi;
+        return;
+    }
+
+    if (IS_TYPE_FLOAT(srctype)) {
+        if (IS_TYPE_FLOAT(dsttype)) {
+#line 9222
+            CError_FATAL();
+            return;
+        }
+
+        GEN_NODE(inner, output);
+        ENSURE_FPR(output, srctype, 0);
+        if (output->reg != 1)
+            emitpcode(PC_FMR, 1, output->reg);
+
+        branch_subroutine(rt_cvt_dbl_usll, 0, used_regs_f1);
+
+        output->optype = OpndType_GPRPair;
+        output->reg = ALLOC_GPR();
+        output->regHi = ALLOC_GPR();
+        emitpcode(PC_MR, output->reg, low_reg);
+        emitpcode(PC_MR, output->regHi, high_reg);
+        return;
+    }
+
+    if (IS_TYPE_STRUCT(srctype)) {
+        GEN_NODE_TO_REG(inner, outputReg, 0, output);
+
+        if (TYPE_IS_8BYTES(expr->rtype) && dsttype->size == srctype->size) {
+            coerce_to_register_pair(output, srctype, outputReg, outputRegHi);
+        } else {
+#line 9256
+            CError_FATAL();
+        }
+        return;
+    }
+
+#line 9261
+    CError_FATAL();
+}
+
+void gen_VECTOR128CONST(ENode *expr, short outputReg, short outputRegHi, Operand *output) {
+    int gpr;
+    int vr;
+    COVCResult result;
+
+    vr = outputReg ? outputReg : ALLOC_VR();
+    if (!canoptimizevectorconst(&expr->data.vector128val, expr->rtype, &result)) {
+#line 9282
+        CError_FATAL();
+    }
+
+    if (result.op1 != -1) {
+        emitpcode(result.op1, vr, result.arg);
+        output->optype = OpndType_VR;
+        output->reg = vr;
+        return;
+    }
+
+    if (result.op2 != -1) {
+        gpr = ALLOC_GPR();
+        emitpcode(PC_LI, gpr, result.arg);
+        emitpcode(result.op2, vr, 0, gpr);
+        output->optype = OpndType_VR;
+        output->reg = vr;
+        return;
+    }
+
+#line 9298
+    CError_FATAL();
+}