mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-05 13:30:38 +00:00
9a21500edc
is just a silly wrapper around MorphNodeTo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97416 91177308-0d34-0410-b5e6-96231b3b80d8
623 lines
21 KiB
C++
623 lines
21 KiB
C++
//===- DAGISelMatcherEmitter.cpp - Matcher Emitter ------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains code to generate C++ code a matcher.
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//
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//===----------------------------------------------------------------------===//
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#include "DAGISelMatcher.h"
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#include "CodeGenDAGPatterns.h"
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#include "Record.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/Support/FormattedStream.h"
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using namespace llvm;
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enum {
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CommentIndent = 30
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};
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/// ClassifyInt - Classify an integer by size, return '1','2','4','8' if this
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/// fits in 1, 2, 4, or 8 sign extended bytes.
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static char ClassifyInt(int64_t Val) {
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if (Val == int8_t(Val)) return '1';
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if (Val == int16_t(Val)) return '2';
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if (Val == int32_t(Val)) return '4';
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return '8';
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}
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/// EmitInt - Emit the specified integer, returning the number of bytes emitted.
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static unsigned EmitInt(int64_t Val, formatted_raw_ostream &OS) {
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unsigned BytesEmitted = 1;
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OS << (int)(unsigned char)Val << ", ";
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if (Val == int8_t(Val)) {
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OS << '\n';
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return BytesEmitted;
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}
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OS << (int)(unsigned char)(Val >> 8) << ", ";
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++BytesEmitted;
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if (Val != int16_t(Val)) {
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OS << (int)(unsigned char)(Val >> 16) << ", "
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<< (int)(unsigned char)(Val >> 24) << ", ";
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BytesEmitted += 2;
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if (Val != int32_t(Val)) {
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OS << (int)(unsigned char)(Val >> 32) << ", "
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<< (int)(unsigned char)(Val >> 40) << ", "
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<< (int)(unsigned char)(Val >> 48) << ", "
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<< (int)(unsigned char)(Val >> 56) << ", ";
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BytesEmitted += 4;
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}
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}
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OS.PadToColumn(CommentIndent) << "// " << Val << " aka 0x";
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OS.write_hex(Val) << '\n';
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return BytesEmitted;
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}
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namespace {
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class MatcherTableEmitter {
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StringMap<unsigned> NodePredicateMap, PatternPredicateMap;
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std::vector<std::string> NodePredicates, PatternPredicates;
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DenseMap<const ComplexPattern*, unsigned> ComplexPatternMap;
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std::vector<const ComplexPattern*> ComplexPatterns;
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DenseMap<Record*, unsigned> NodeXFormMap;
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std::vector<const Record*> NodeXForms;
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// Per opcode frequence count.
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std::vector<unsigned> Histogram;
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public:
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MatcherTableEmitter() {}
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unsigned EmitMatcherList(const Matcher *N, unsigned Indent,
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unsigned StartIdx, formatted_raw_ostream &OS);
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void EmitPredicateFunctions(formatted_raw_ostream &OS);
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void EmitHistogram(formatted_raw_ostream &OS);
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private:
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unsigned EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
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formatted_raw_ostream &OS);
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unsigned getNodePredicate(StringRef PredName) {
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unsigned &Entry = NodePredicateMap[PredName];
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if (Entry == 0) {
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NodePredicates.push_back(PredName.str());
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Entry = NodePredicates.size();
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}
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return Entry-1;
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}
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unsigned getPatternPredicate(StringRef PredName) {
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unsigned &Entry = PatternPredicateMap[PredName];
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if (Entry == 0) {
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PatternPredicates.push_back(PredName.str());
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Entry = PatternPredicates.size();
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}
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return Entry-1;
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}
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unsigned getComplexPat(const ComplexPattern &P) {
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unsigned &Entry = ComplexPatternMap[&P];
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if (Entry == 0) {
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ComplexPatterns.push_back(&P);
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Entry = ComplexPatterns.size();
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}
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return Entry-1;
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}
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unsigned getNodeXFormID(Record *Rec) {
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unsigned &Entry = NodeXFormMap[Rec];
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if (Entry == 0) {
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NodeXForms.push_back(Rec);
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Entry = NodeXForms.size();
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}
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return Entry-1;
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}
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};
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} // end anonymous namespace.
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static unsigned GetVBRSize(unsigned Val) {
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if (Val <= 127) return 1;
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unsigned NumBytes = 0;
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while (Val >= 128) {
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Val >>= 7;
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++NumBytes;
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}
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return NumBytes+1;
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}
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/// EmitVBRValue - Emit the specified value as a VBR, returning the number of
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/// bytes emitted.
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static unsigned EmitVBRValue(unsigned Val, raw_ostream &OS) {
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if (Val <= 127) {
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OS << Val << ", ";
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return 1;
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}
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unsigned InVal = Val;
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unsigned NumBytes = 0;
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while (Val >= 128) {
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OS << (Val&127) << "|128,";
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Val >>= 7;
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++NumBytes;
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}
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OS << Val << "/*" << InVal << "*/, ";
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return NumBytes+1;
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}
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/// EmitMatcherOpcodes - Emit bytes for the specified matcher and return
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/// the number of bytes emitted.
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unsigned MatcherTableEmitter::
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EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
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formatted_raw_ostream &OS) {
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OS.PadToColumn(Indent*2);
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switch (N->getKind()) {
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case Matcher::Scope: {
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const ScopeMatcher *SM = cast<ScopeMatcher>(N);
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assert(SM->getNext() == 0 && "Shouldn't have next after scope");
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unsigned StartIdx = CurrentIdx;
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// Emit all of the children.
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for (unsigned i = 0, e = SM->getNumChildren(); i != e; ++i) {
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if (i == 0) {
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OS << "OPC_Scope, ";
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++CurrentIdx;
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} else {
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OS << "/*" << CurrentIdx << "*/";
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OS.PadToColumn(Indent*2) << "/*Scope*/ ";
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}
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// We need to encode the child and the offset of the failure code before
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// emitting either of them. Handle this by buffering the output into a
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// string while we get the size. Unfortunately, the offset of the
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// children depends on the VBR size of the child, so for large children we
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// have to iterate a bit.
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SmallString<128> TmpBuf;
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unsigned ChildSize = 0;
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unsigned VBRSize = 0;
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do {
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VBRSize = GetVBRSize(ChildSize);
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TmpBuf.clear();
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raw_svector_ostream OS(TmpBuf);
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formatted_raw_ostream FOS(OS);
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ChildSize = EmitMatcherList(cast<ScopeMatcher>(N)->getChild(i),
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Indent+1, CurrentIdx+VBRSize, FOS);
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} while (GetVBRSize(ChildSize) != VBRSize);
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assert(ChildSize != 0 && "Should not have a zero-sized child!");
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CurrentIdx += EmitVBRValue(ChildSize, OS);
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OS << "/*->" << CurrentIdx+ChildSize << "*/";
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if (i == 0)
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OS.PadToColumn(CommentIndent) << "// " << SM->getNumChildren()
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<< " children in Scope";
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OS << '\n' << TmpBuf.str();
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CurrentIdx += ChildSize;
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}
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// Emit a zero as a sentinel indicating end of 'Scope'.
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OS << "/*" << CurrentIdx << "*/";
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OS.PadToColumn(Indent*2) << "0, /*End of Scope*/\n";
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return CurrentIdx - StartIdx + 1;
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}
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case Matcher::RecordNode:
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OS << "OPC_RecordNode,";
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OS.PadToColumn(CommentIndent) << "// "
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<< cast<RecordMatcher>(N)->getWhatFor() << '\n';
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return 1;
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case Matcher::RecordChild:
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OS << "OPC_RecordChild" << cast<RecordChildMatcher>(N)->getChildNo()
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<< ',';
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OS.PadToColumn(CommentIndent) << "// "
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<< cast<RecordChildMatcher>(N)->getWhatFor() << '\n';
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return 1;
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case Matcher::RecordMemRef:
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OS << "OPC_RecordMemRef,\n";
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return 1;
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case Matcher::CaptureFlagInput:
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OS << "OPC_CaptureFlagInput,\n";
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return 1;
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case Matcher::MoveChild:
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OS << "OPC_MoveChild, " << cast<MoveChildMatcher>(N)->getChildNo() << ",\n";
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return 2;
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case Matcher::MoveParent:
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OS << "OPC_MoveParent,\n";
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return 1;
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case Matcher::CheckSame:
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OS << "OPC_CheckSame, "
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<< cast<CheckSameMatcher>(N)->getMatchNumber() << ",\n";
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return 2;
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case Matcher::CheckPatternPredicate: {
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StringRef Pred = cast<CheckPatternPredicateMatcher>(N)->getPredicate();
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OS << "OPC_CheckPatternPredicate, " << getPatternPredicate(Pred) << ',';
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OS.PadToColumn(CommentIndent) << "// " << Pred << '\n';
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return 2;
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}
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case Matcher::CheckPredicate: {
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StringRef Pred = cast<CheckPredicateMatcher>(N)->getPredicateName();
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OS << "OPC_CheckPredicate, " << getNodePredicate(Pred) << ',';
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OS.PadToColumn(CommentIndent) << "// " << Pred << '\n';
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return 2;
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}
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case Matcher::CheckOpcode:
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OS << "OPC_CheckOpcode, "
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<< cast<CheckOpcodeMatcher>(N)->getOpcode().getEnumName() << ",\n";
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return 2;
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case Matcher::CheckMultiOpcode: {
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const CheckMultiOpcodeMatcher *CMO = cast<CheckMultiOpcodeMatcher>(N);
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OS << "OPC_CheckMultiOpcode, " << CMO->getNumOpcodes() << ", ";
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for (unsigned i = 0, e = CMO->getNumOpcodes(); i != e; ++i)
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OS << CMO->getOpcode(i).getEnumName() << ", ";
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OS << '\n';
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return 2 + CMO->getNumOpcodes();
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}
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case Matcher::CheckType:
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OS << "OPC_CheckType, "
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<< getEnumName(cast<CheckTypeMatcher>(N)->getType()) << ",\n";
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return 2;
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case Matcher::CheckChildType:
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OS << "OPC_CheckChild"
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<< cast<CheckChildTypeMatcher>(N)->getChildNo() << "Type, "
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<< getEnumName(cast<CheckChildTypeMatcher>(N)->getType()) << ",\n";
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return 2;
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case Matcher::CheckInteger: {
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int64_t Val = cast<CheckIntegerMatcher>(N)->getValue();
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OS << "OPC_CheckInteger" << ClassifyInt(Val) << ", ";
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return EmitInt(Val, OS)+1;
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}
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case Matcher::CheckCondCode:
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OS << "OPC_CheckCondCode, ISD::"
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<< cast<CheckCondCodeMatcher>(N)->getCondCodeName() << ",\n";
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return 2;
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case Matcher::CheckValueType:
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OS << "OPC_CheckValueType, MVT::"
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<< cast<CheckValueTypeMatcher>(N)->getTypeName() << ",\n";
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return 2;
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case Matcher::CheckComplexPat: {
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const ComplexPattern &Pattern =
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cast<CheckComplexPatMatcher>(N)->getPattern();
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OS << "OPC_CheckComplexPat, " << getComplexPat(Pattern) << ',';
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OS.PadToColumn(CommentIndent) << "// " << Pattern.getSelectFunc();
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OS << ": " << Pattern.getNumOperands() << " operands";
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if (Pattern.hasProperty(SDNPHasChain))
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OS << " + chain result and input";
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OS << '\n';
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return 2;
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}
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case Matcher::CheckAndImm: {
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int64_t Val = cast<CheckAndImmMatcher>(N)->getValue();
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OS << "OPC_CheckAndImm" << ClassifyInt(Val) << ", ";
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return EmitInt(Val, OS)+1;
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}
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case Matcher::CheckOrImm: {
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int64_t Val = cast<CheckOrImmMatcher>(N)->getValue();
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OS << "OPC_CheckOrImm" << ClassifyInt(Val) << ", ";
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return EmitInt(Val, OS)+1;
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}
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case Matcher::CheckFoldableChainNode:
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OS << "OPC_CheckFoldableChainNode,\n";
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return 1;
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case Matcher::CheckChainCompatible:
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OS << "OPC_CheckChainCompatible, "
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<< cast<CheckChainCompatibleMatcher>(N)->getPreviousOp() << ",\n";
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return 2;
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case Matcher::EmitInteger: {
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int64_t Val = cast<EmitIntegerMatcher>(N)->getValue();
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OS << "OPC_EmitInteger" << ClassifyInt(Val) << ", "
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<< getEnumName(cast<EmitIntegerMatcher>(N)->getVT()) << ", ";
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return EmitInt(Val, OS)+2;
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}
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case Matcher::EmitStringInteger: {
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const std::string &Val = cast<EmitStringIntegerMatcher>(N)->getValue();
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// These should always fit into one byte.
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OS << "OPC_EmitInteger1, "
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<< getEnumName(cast<EmitStringIntegerMatcher>(N)->getVT()) << ", "
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<< Val << ",\n";
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return 3;
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}
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case Matcher::EmitRegister:
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OS << "OPC_EmitRegister, "
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<< getEnumName(cast<EmitRegisterMatcher>(N)->getVT()) << ", ";
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if (Record *R = cast<EmitRegisterMatcher>(N)->getReg())
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OS << getQualifiedName(R) << ",\n";
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else
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OS << "0 /*zero_reg*/,\n";
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return 3;
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case Matcher::EmitConvertToTarget:
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OS << "OPC_EmitConvertToTarget, "
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<< cast<EmitConvertToTargetMatcher>(N)->getSlot() << ",\n";
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return 2;
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case Matcher::EmitMergeInputChains: {
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const EmitMergeInputChainsMatcher *MN =
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cast<EmitMergeInputChainsMatcher>(N);
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OS << "OPC_EmitMergeInputChains, " << MN->getNumNodes() << ", ";
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for (unsigned i = 0, e = MN->getNumNodes(); i != e; ++i)
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OS << MN->getNode(i) << ", ";
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OS << '\n';
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return 2+MN->getNumNodes();
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}
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case Matcher::EmitCopyToReg:
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OS << "OPC_EmitCopyToReg, "
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<< cast<EmitCopyToRegMatcher>(N)->getSrcSlot() << ", "
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<< getQualifiedName(cast<EmitCopyToRegMatcher>(N)->getDestPhysReg())
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<< ",\n";
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return 3;
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case Matcher::EmitNodeXForm: {
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const EmitNodeXFormMatcher *XF = cast<EmitNodeXFormMatcher>(N);
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OS << "OPC_EmitNodeXForm, " << getNodeXFormID(XF->getNodeXForm()) << ", "
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<< XF->getSlot() << ',';
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OS.PadToColumn(CommentIndent) << "// "<<XF->getNodeXForm()->getName()<<'\n';
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return 3;
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}
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case Matcher::EmitNode:
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case Matcher::MorphNodeTo: {
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const EmitNodeMatcherCommon *EN = cast<EmitNodeMatcherCommon>(N);
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OS << (isa<EmitNodeMatcher>(EN) ? "OPC_EmitNode" : "OPC_MorphNodeTo");
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OS << ", TARGET_OPCODE(" << EN->getOpcodeName() << "), 0";
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if (EN->hasChain()) OS << "|OPFL_Chain";
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if (EN->hasFlag()) OS << "|OPFL_Flag";
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if (EN->hasMemRefs()) OS << "|OPFL_MemRefs";
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if (EN->getNumFixedArityOperands() != -1)
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OS << "|OPFL_Variadic" << EN->getNumFixedArityOperands();
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OS << ",\n";
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OS.PadToColumn(Indent*2+4) << EN->getNumVTs() << "/*#VTs*/, ";
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for (unsigned i = 0, e = EN->getNumVTs(); i != e; ++i)
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OS << getEnumName(EN->getVT(i)) << ", ";
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OS << EN->getNumOperands() << "/*#Ops*/, ";
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unsigned NumOperandBytes = 0;
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for (unsigned i = 0, e = EN->getNumOperands(); i != e; ++i) {
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// We emit the operand numbers in VBR encoded format, in case the number
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// is too large to represent with a byte.
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NumOperandBytes += EmitVBRValue(EN->getOperand(i), OS);
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}
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// Print the result #'s for EmitNode.
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if (const EmitNodeMatcher *E = dyn_cast<EmitNodeMatcher>(EN)) {
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if (unsigned NumResults = EN->getNumNonChainFlagVTs()) {
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OS.PadToColumn(CommentIndent) << "// Results = ";
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unsigned First = E->getFirstResultSlot();
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for (unsigned i = 0; i != NumResults; ++i)
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OS << "#" << First+i << " ";
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}
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}
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OS << '\n';
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if (const MorphNodeToMatcher *SNT = dyn_cast<MorphNodeToMatcher>(N)) {
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OS.PadToColumn(Indent*2) << "// Src: "
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<< *SNT->getPattern().getSrcPattern() << '\n';
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OS.PadToColumn(Indent*2) << "// Dst: "
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<< *SNT->getPattern().getDstPattern() << '\n';
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}
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return 6+EN->getNumVTs()+NumOperandBytes;
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}
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case Matcher::MarkFlagResults: {
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const MarkFlagResultsMatcher *CFR = cast<MarkFlagResultsMatcher>(N);
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OS << "OPC_MarkFlagResults, " << CFR->getNumNodes() << ", ";
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unsigned NumOperandBytes = 0;
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for (unsigned i = 0, e = CFR->getNumNodes(); i != e; ++i)
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NumOperandBytes += EmitVBRValue(CFR->getNode(i), OS);
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OS << '\n';
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return 2+NumOperandBytes;
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}
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case Matcher::CompleteMatch: {
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const CompleteMatchMatcher *CM = cast<CompleteMatchMatcher>(N);
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OS << "OPC_CompleteMatch, " << CM->getNumResults() << ", ";
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unsigned NumResultBytes = 0;
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for (unsigned i = 0, e = CM->getNumResults(); i != e; ++i)
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NumResultBytes += EmitVBRValue(CM->getResult(i), OS);
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OS << '\n';
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OS.PadToColumn(Indent*2) << "// Src: "
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<< *CM->getPattern().getSrcPattern() << '\n';
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OS.PadToColumn(Indent*2) << "// Dst: "
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<< *CM->getPattern().getDstPattern() << '\n';
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return 2 + NumResultBytes;
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}
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}
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assert(0 && "Unreachable");
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return 0;
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}
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|
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/// EmitMatcherList - Emit the bytes for the specified matcher subtree.
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|
unsigned MatcherTableEmitter::
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EmitMatcherList(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
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formatted_raw_ostream &OS) {
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unsigned Size = 0;
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while (N) {
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if (unsigned(N->getKind()) >= Histogram.size())
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Histogram.resize(N->getKind()+1);
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Histogram[N->getKind()]++;
|
|
|
|
OS << "/*" << CurrentIdx << "*/";
|
|
unsigned MatcherSize = EmitMatcher(N, Indent, CurrentIdx, OS);
|
|
Size += MatcherSize;
|
|
CurrentIdx += MatcherSize;
|
|
|
|
// If there are other nodes in this list, iterate to them, otherwise we're
|
|
// done.
|
|
N = N->getNext();
|
|
}
|
|
return Size;
|
|
}
|
|
|
|
void MatcherTableEmitter::EmitPredicateFunctions(formatted_raw_ostream &OS) {
|
|
// FIXME: Don't build off the DAGISelEmitter's predicates, emit them directly
|
|
// here into the case stmts.
|
|
|
|
// Emit pattern predicates.
|
|
OS << "bool CheckPatternPredicate(unsigned PredNo) const {\n";
|
|
OS << " switch (PredNo) {\n";
|
|
OS << " default: assert(0 && \"Invalid predicate in table?\");\n";
|
|
for (unsigned i = 0, e = PatternPredicates.size(); i != e; ++i)
|
|
OS << " case " << i << ": return " << PatternPredicates[i] << ";\n";
|
|
OS << " }\n";
|
|
OS << "}\n\n";
|
|
|
|
// Emit Node predicates.
|
|
OS << "bool CheckNodePredicate(SDNode *N, unsigned PredNo) const {\n";
|
|
OS << " switch (PredNo) {\n";
|
|
OS << " default: assert(0 && \"Invalid predicate in table?\");\n";
|
|
for (unsigned i = 0, e = NodePredicates.size(); i != e; ++i)
|
|
OS << " case " << i << ": return " << NodePredicates[i] << "(N);\n";
|
|
OS << " }\n";
|
|
OS << "}\n\n";
|
|
|
|
// Emit CompletePattern matchers.
|
|
// FIXME: This should be const.
|
|
OS << "bool CheckComplexPattern(SDNode *Root, SDValue N,\n";
|
|
OS << " unsigned PatternNo, SmallVectorImpl<SDValue> &Result) {\n";
|
|
OS << " switch (PatternNo) {\n";
|
|
OS << " default: assert(0 && \"Invalid pattern # in table?\");\n";
|
|
for (unsigned i = 0, e = ComplexPatterns.size(); i != e; ++i) {
|
|
const ComplexPattern &P = *ComplexPatterns[i];
|
|
unsigned NumOps = P.getNumOperands();
|
|
|
|
if (P.hasProperty(SDNPHasChain))
|
|
++NumOps; // Get the chained node too.
|
|
|
|
OS << " case " << i << ":\n";
|
|
OS << " Result.resize(Result.size()+" << NumOps << ");\n";
|
|
OS << " return " << P.getSelectFunc();
|
|
|
|
// FIXME: Temporary hack until old isel dies.
|
|
if (P.hasProperty(SDNPHasChain))
|
|
OS << "XXX";
|
|
|
|
OS << "(Root, N";
|
|
for (unsigned i = 0; i != NumOps; ++i)
|
|
OS << ", Result[Result.size()-" << (NumOps-i) << ']';
|
|
OS << ");\n";
|
|
}
|
|
OS << " }\n";
|
|
OS << "}\n\n";
|
|
|
|
// Emit SDNodeXForm handlers.
|
|
// FIXME: This should be const.
|
|
OS << "SDValue RunSDNodeXForm(SDValue V, unsigned XFormNo) {\n";
|
|
OS << " switch (XFormNo) {\n";
|
|
OS << " default: assert(0 && \"Invalid xform # in table?\");\n";
|
|
|
|
// FIXME: The node xform could take SDValue's instead of SDNode*'s.
|
|
for (unsigned i = 0, e = NodeXForms.size(); i != e; ++i)
|
|
OS << " case " << i << ": return Transform_" << NodeXForms[i]->getName()
|
|
<< "(V.getNode());\n";
|
|
OS << " }\n";
|
|
OS << "}\n\n";
|
|
}
|
|
|
|
void MatcherTableEmitter::EmitHistogram(formatted_raw_ostream &OS) {
|
|
OS << " // Opcode Histogram:\n";
|
|
for (unsigned i = 0, e = Histogram.size(); i != e; ++i) {
|
|
OS << " // #";
|
|
switch ((Matcher::KindTy)i) {
|
|
case Matcher::Scope: OS << "OPC_Scope"; break;
|
|
case Matcher::RecordNode: OS << "OPC_RecordNode"; break;
|
|
case Matcher::RecordChild: OS << "OPC_RecordChild"; break;
|
|
case Matcher::RecordMemRef: OS << "OPC_RecordMemRef"; break;
|
|
case Matcher::CaptureFlagInput: OS << "OPC_CaptureFlagInput"; break;
|
|
case Matcher::MoveChild: OS << "OPC_MoveChild"; break;
|
|
case Matcher::MoveParent: OS << "OPC_MoveParent"; break;
|
|
case Matcher::CheckSame: OS << "OPC_CheckSame"; break;
|
|
case Matcher::CheckPatternPredicate:
|
|
OS << "OPC_CheckPatternPredicate"; break;
|
|
case Matcher::CheckPredicate: OS << "OPC_CheckPredicate"; break;
|
|
case Matcher::CheckOpcode: OS << "OPC_CheckOpcode"; break;
|
|
case Matcher::CheckMultiOpcode: OS << "OPC_CheckMultiOpcode"; break;
|
|
case Matcher::CheckType: OS << "OPC_CheckType"; break;
|
|
case Matcher::CheckChildType: OS << "OPC_CheckChildType"; break;
|
|
case Matcher::CheckInteger: OS << "OPC_CheckInteger"; break;
|
|
case Matcher::CheckCondCode: OS << "OPC_CheckCondCode"; break;
|
|
case Matcher::CheckValueType: OS << "OPC_CheckValueType"; break;
|
|
case Matcher::CheckComplexPat: OS << "OPC_CheckComplexPat"; break;
|
|
case Matcher::CheckAndImm: OS << "OPC_CheckAndImm"; break;
|
|
case Matcher::CheckOrImm: OS << "OPC_CheckOrImm"; break;
|
|
case Matcher::CheckFoldableChainNode:
|
|
OS << "OPC_CheckFoldableChainNode"; break;
|
|
case Matcher::CheckChainCompatible: OS << "OPC_CheckChainCompatible"; break;
|
|
case Matcher::EmitInteger: OS << "OPC_EmitInteger"; break;
|
|
case Matcher::EmitStringInteger: OS << "OPC_EmitStringInteger"; break;
|
|
case Matcher::EmitRegister: OS << "OPC_EmitRegister"; break;
|
|
case Matcher::EmitConvertToTarget: OS << "OPC_EmitConvertToTarget"; break;
|
|
case Matcher::EmitMergeInputChains: OS << "OPC_EmitMergeInputChains"; break;
|
|
case Matcher::EmitCopyToReg: OS << "OPC_EmitCopyToReg"; break;
|
|
case Matcher::EmitNode: OS << "OPC_EmitNode"; break;
|
|
case Matcher::MorphNodeTo: OS << "OPC_MorphNodeTo"; break;
|
|
case Matcher::EmitNodeXForm: OS << "OPC_EmitNodeXForm"; break;
|
|
case Matcher::MarkFlagResults: OS << "OPC_MarkFlagResults"; break;
|
|
case Matcher::CompleteMatch: OS << "OPC_CompleteMatch"; break;
|
|
}
|
|
|
|
OS.PadToColumn(40) << " = " << Histogram[i] << '\n';
|
|
}
|
|
OS << '\n';
|
|
}
|
|
|
|
|
|
void llvm::EmitMatcherTable(const Matcher *TheMatcher, raw_ostream &O) {
|
|
formatted_raw_ostream OS(O);
|
|
|
|
OS << "// The main instruction selector code.\n";
|
|
OS << "SDNode *SelectCode(SDNode *N) {\n";
|
|
|
|
MatcherTableEmitter MatcherEmitter;
|
|
|
|
OS << " // Opcodes are emitted as 2 bytes, TARGET_OPCODE handles this.\n";
|
|
OS << " #define TARGET_OPCODE(X) X & 255, unsigned(X) >> 8\n";
|
|
OS << " static const unsigned char MatcherTable[] = {\n";
|
|
unsigned TotalSize = MatcherEmitter.EmitMatcherList(TheMatcher, 5, 0, OS);
|
|
OS << " 0\n }; // Total Array size is " << (TotalSize+1) << " bytes\n\n";
|
|
|
|
MatcherEmitter.EmitHistogram(OS);
|
|
|
|
OS << " #undef TARGET_OPCODE\n";
|
|
OS << " return SelectCodeCommon(N, MatcherTable,sizeof(MatcherTable));\n}\n";
|
|
OS << "\n";
|
|
|
|
// Next up, emit the function for node and pattern predicates:
|
|
MatcherEmitter.EmitPredicateFunctions(OS);
|
|
}
|