From 094b96ca1df4a035b5f93c351f773306c0241f3f Mon Sep 17 00:00:00 2001
From: Ash Wolf <ninji@wuffs.org>
Date: Thu, 26 Jan 2023 11:30:47 +0000
Subject: move lots of source files around to match their actual placement in
 the original tree

---
 .../FrontEnd/Optimizer/IroFlowgraph.h              | 97 ++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 compiler_and_linker/FrontEnd/Optimizer/IroFlowgraph.h

(limited to 'compiler_and_linker/FrontEnd/Optimizer/IroFlowgraph.h')

diff --git a/compiler_and_linker/FrontEnd/Optimizer/IroFlowgraph.h b/compiler_and_linker/FrontEnd/Optimizer/IroFlowgraph.h
new file mode 100644
index 0000000..13ddce9
--- /dev/null
+++ b/compiler_and_linker/FrontEnd/Optimizer/IroFlowgraph.h
@@ -0,0 +1,97 @@
+#ifndef COMPILER_IROFLOWGRAPH_H
+#define COMPILER_IROFLOWGRAPH_H
+
+#include "IrOptimizer.h"
+#include "BitVector.h"
+#include "compiler/CError.h"
+#include "compiler/CompilerTools.h"
+
+#ifdef __MWERKS__
+#pragma options align=mac68k
+#endif
+
+struct IRONode {
+    UInt16 index;
+    UInt16 numsucc;
+    UInt16 *succ;
+    UInt16 numpred;
+    UInt16 *pred;
+    IROLinear *first;
+    IROLinear *last;
+    BitVector *x16; // In
+    BitVector *x1A; // Out
+    BitVector *x1E; // Gen
+    BitVector *x22; // Kill
+    UInt32 x26;
+    BitVector *x2A; // AA
+    BitVector *dom;
+    IRONode *nextnode;
+    Boolean x36;
+    Boolean x37;
+    Boolean mustreach;
+    Boolean x39;
+    UInt16 loopdepth;
+    Boolean x3C;
+    struct ObjectSet *addressed;
+    Boolean mustreach1;
+};
+
+typedef struct IRONodes {
+    UInt16 *indices;
+    UInt16 num;
+    UInt16 base;
+} IRONodes;
+
+#ifdef __MWERKS__
+#pragma options align=reset
+#endif
+
+extern UInt16 IRO_NumNodes;
+extern IRONode *IRO_FirstNode;
+extern IRONode *IRO_LastNode;
+extern IRONode *IRO_EndNode;
+extern IRONode **IRO_NodeTable;
+extern BitVector *IRO_VarKills;
+extern BitVector *IRO_Avail;
+extern BitVector *IRO_FuncKills;
+extern BitVector *IRO_ExprKills;
+
+extern void IRO_ComputeSuccPred(void);
+extern void IRO_ComputeDom(void);
+extern void IRO_BuildFlowgraph(IROLinear *linear);
+extern IRONode *IRO_NewFlowGraphNode(void);
+extern IRONode *IRO_MergeFlowGraphNodes(IRONode *a, IRONode *b);
+
+CW_INLINE void IROFlowgraph_sub_4C2140(IRONodes *nodes) {
+    nodes->indices = oalloc(sizeof(UInt16) * IRO_NumNodes);
+    nodes->num = 0;
+    nodes->base = 0;
+}
+
+CW_INLINE void IROFlowgraph_sub_4C20E0(IRONodes *nodes) {
+}
+
+CW_INLINE UInt16 IROFlowgraph_sub_4C2040(IRONodes *nodes) {
+    return nodes->num;
+}
+
+CW_INLINE UInt16 IROFlowgraph_sub_4C2100(IRONodes *nodes) {
+    UInt16 result = -1;
+    if (nodes->num) {
+        result = nodes->indices[nodes->base];
+        nodes->base = (nodes->base + 1) % IRO_NumNodes;
+        nodes->num--;
+    }
+    return result;
+}
+
+CW_INLINE void IROFlowgraph_sub_4C3880(IRONodes *nodes, UInt16 index) {
+    if (nodes->num < IRO_NumNodes) {
+        nodes->indices[(nodes->base + nodes->num) % IRO_NumNodes] = index;
+        nodes->num++;
+    } else {
+        CError_FATAL(93);
+    }
+}
+
+#endif
-- 
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