From 0bec4f557a96e1a40437cf5af20cc78a5eec8a63 Mon Sep 17 00:00:00 2001
From: Ash Wolf <ninji@wuffs.org>
Date: Wed, 11 Jan 2023 22:29:53 +0000
Subject: getting closer

---
 compiler_and_linker/unsorted/ValueNumbering.c | 28 +++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

(limited to 'compiler_and_linker/unsorted/ValueNumbering.c')

diff --git a/compiler_and_linker/unsorted/ValueNumbering.c b/compiler_and_linker/unsorted/ValueNumbering.c
index 670471d..0907fa1 100644
--- a/compiler_and_linker/unsorted/ValueNumbering.c
+++ b/compiler_and_linker/unsorted/ValueNumbering.c
@@ -265,7 +265,7 @@ static int matchvalues(AvailableValue *av, PCode *match) {
         }
     }
 
-    if ((match->flags & (fPCodeFlag2 | fPCodeFlag20000)) && match->alias->valuenumber != av->aliasnumber)
+    if ((match->flags & (fIsRead | fPCodeFlag20000)) && match->alias->valuenumber != av->aliasnumber)
         return 0;
 
     return 1;
@@ -331,7 +331,7 @@ static void addavailablevalue(PCode *pcode) {
             av->opnumbers[i] = regvalue[op->arg][op->data.reg.reg].number;
     }
 
-    if (pcode->flags & (fPCodeFlag2 | fPCodeFlag20000))
+    if (pcode->flags & (fIsRead | fPCodeFlag20000))
         av->aliasnumber = pcode->alias->valuenumber;
 
     op = &pcode->args[0];
@@ -368,7 +368,7 @@ static int isCSEop(PCode *pcode) {
             break;
     }
 
-    if (PCODE_FLAG_SET_F(pcode) & (fIsVolatile | fSideEffects | fOverflow | fPCodeFlag10000000 | fPCodeFlag20000000))
+    if (PCODE_FLAG_SET_F(pcode) & (fIsVolatile | fSideEffects | fOverflow | fSetsCarry | fRecordBit))
         return 0;
 
     for (i = 0, op = &pcode->args[0]; i < pcode->argCount; i++, op++) {
@@ -542,17 +542,17 @@ static void removecsesfrombasicblock(PCodeBlock *block) {
     for (pcode = block->firstPCode; pcode; pcode = next) {
         next = pcode->nextPCode;
         propagatecopiesto(pcode);
-        if (pcode->flags & fPCodeFlag10) {
+        if (pcode->flags & fIsMove) {
             registercopy(pcode);
-        } else if ((pcode->flags & fPCodeFlag8) && (pcode->flags & (fLink | fSideEffects))) {
+        } else if ((pcode->flags & fIsCall) && (pcode->flags & (fLink | fSideEffects))) {
             functioncall(pcode);
-        } else if (pcode->flags & fPCodeFlag2) {
-            if (pcode->flags & fPCodeFlag20)
+        } else if (pcode->flags & fIsRead) {
+            if (pcode->flags & fIsPtrOp)
                 pointerload(pcode);
             else
                 simpleload(pcode);
-        } else if (pcode->flags & fPCodeFlag4) {
-            if (pcode->flags & fPCodeFlag20)
+        } else if (pcode->flags & fIsWrite) {
+            if (pcode->flags & fIsPtrOp)
                 pointerstore(pcode);
             else
                 simplestore(pcode);
@@ -567,7 +567,7 @@ static void removecsesfrombasicblock(PCodeBlock *block) {
         }
     }
 
-    block->flags |= fPCBlockFlag4;
+    block->flags |= fVisited;
 }
 
 static void getvaluestate(State *state) {
@@ -621,7 +621,7 @@ static void removecsesfromextendedbasicblock(PCodeBlock *block) {
 
     counter = 0;
     for (succ = block->successors; succ; succ = succ->nextLink) {
-        if (!(succ->block->flags & fPCBlockFlag4) && succ->block->predecessors && !succ->block->predecessors->nextLink)
+        if (!(succ->block->flags & fVisited) && succ->block->predecessors && !succ->block->predecessors->nextLink)
             counter++;
     }
 
@@ -629,7 +629,7 @@ static void removecsesfromextendedbasicblock(PCodeBlock *block) {
         getvaluestate(&state);
         forkvaluestate(nextvaluenumber);
         for (succ = block->successors; succ; succ = succ->nextLink) {
-            if (!(succ->block->flags & fPCBlockFlag4) && succ->block->predecessors && !succ->block->predecessors->nextLink) {
+            if (!(succ->block->flags & fVisited) && succ->block->predecessors && !succ->block->predecessors->nextLink) {
                 removecsesfromextendedbasicblock(succ->block);
                 regressvaluestate();
             }
@@ -647,10 +647,10 @@ void removecommonsubexpressions(Object *proc, int flag) {
     allocatecsedatastructures();
 
     for (block = pcbasicblocks; block; block = block->nextBlock)
-        block->flags &= ~fPCBlockFlag4;
+        block->flags &= ~fVisited;
 
     for (block = pcbasicblocks; block; block = block->nextBlock) {
-        if (!(block->flags & fPCBlockFlag4)) {
+        if (!(block->flags & fVisited)) {
             initializecsedatastructures();
             removecsesfromextendedbasicblock(block);
         }
-- 
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