mirror of https://git.wuffs.org/MWCC
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
#ifndef COMPILER_IROFLOWGRAPH_H
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#define COMPILER_IROFLOWGRAPH_H
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#include "compiler/IrOptimizer.h"
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#include "compiler/BitVector.h"
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#include "compiler/CError.h"
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#include "compiler/CompilerTools.h"
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#ifdef __MWERKS__
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#pragma options align=mac68k
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#endif
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struct IRONode {
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UInt16 index;
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UInt16 numsucc;
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UInt16 *succ;
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UInt16 numpred;
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UInt16 *pred;
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IROLinear *first;
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IROLinear *last;
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BitVector *x16; // In
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BitVector *x1A; // Out
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BitVector *x1E; // Gen
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BitVector *x22; // Kill
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UInt32 x26;
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BitVector *x2A; // AA
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BitVector *dom;
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IRONode *nextnode;
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Boolean x36;
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Boolean x37;
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Boolean mustreach;
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Boolean x39;
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UInt16 loopdepth;
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Boolean x3C;
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struct ObjectSet *addressed;
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Boolean mustreach1;
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};
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typedef struct IRONodes {
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UInt16 *indices;
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UInt16 num;
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UInt16 base;
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} IRONodes;
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#ifdef __MWERKS__
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#pragma options align=reset
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#endif
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extern UInt16 IRO_NumNodes;
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extern IRONode *IRO_FirstNode;
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extern IRONode *IRO_LastNode;
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extern IRONode *IRO_EndNode;
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extern IRONode **IRO_NodeTable;
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extern BitVector *IRO_VarKills;
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extern BitVector *IRO_Avail;
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extern BitVector *IRO_FuncKills;
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extern BitVector *IRO_ExprKills;
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extern void IRO_ComputeSuccPred(void);
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extern void IRO_ComputeDom(void);
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extern void IRO_BuildFlowgraph(IROLinear *linear);
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extern IRONode *IRO_NewFlowGraphNode(void);
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extern IRONode *IRO_MergeFlowGraphNodes(IRONode *a, IRONode *b);
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inline void IROFlowgraph_sub_4C2140(IRONodes *nodes) {
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nodes->indices = oalloc(sizeof(UInt16) * IRO_NumNodes);
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nodes->num = 0;
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nodes->base = 0;
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}
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inline void IROFlowgraph_sub_4C20E0(IRONodes *nodes) {
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}
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inline UInt16 IROFlowgraph_sub_4C2040(IRONodes *nodes) {
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return nodes->num;
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}
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inline UInt16 IROFlowgraph_sub_4C2100(IRONodes *nodes) {
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UInt16 result = -1;
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if (nodes->num) {
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result = nodes->indices[nodes->base];
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nodes->base = (nodes->base + 1) % IRO_NumNodes;
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nodes->num--;
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}
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return result;
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}
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inline void IROFlowgraph_sub_4C3880(IRONodes *nodes, UInt16 index) {
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if (nodes->num < IRO_NumNodes) {
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nodes->indices[(nodes->base + nodes->num) % IRO_NumNodes] = index;
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nodes->num++;
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} else {
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#line 93
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CError_FATAL();
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}
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}
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#endif
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