//
//===----------------------------------------------------------------------===//
//
-// This file contains code to generate C++ code a matcher.
+// This file contains code to generate C++ code for a matcher.
//
//===----------------------------------------------------------------------===//
namespace {
class MatcherTableEmitter {
+ const CodeGenDAGPatterns &CGP;
StringMap<unsigned> NodePredicateMap, PatternPredicateMap;
std::vector<std::string> NodePredicates, PatternPredicates;
DenseMap<Record*, unsigned> NodeXFormMap;
std::vector<Record*> NodeXForms;
- // Per opcode frequence count.
- std::vector<unsigned> Histogram;
+ bool useEmitRegister2;
+
public:
- MatcherTableEmitter() {}
+ MatcherTableEmitter(const CodeGenDAGPatterns &cgp, bool _useEmitRegister2)
+ : CGP(cgp), useEmitRegister2(_useEmitRegister2) {}
unsigned EmitMatcherList(const Matcher *N, unsigned Indent,
unsigned StartIdx, formatted_raw_ostream &OS);
- void EmitPredicateFunctions(const CodeGenDAGPatterns &CGP,
- formatted_raw_ostream &OS);
+ void EmitPredicateFunctions(formatted_raw_ostream &OS);
- void EmitHistogram(formatted_raw_ostream &OS);
+ void EmitHistogram(const Matcher *N, formatted_raw_ostream &OS);
private:
unsigned EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
formatted_raw_ostream &OS);
OS << "OPC_RecordMemRef,\n";
return 1;
- case Matcher::CaptureFlagInput:
- OS << "OPC_CaptureFlagInput,\n";
+ case Matcher::CaptureGlueInput:
+ OS << "OPC_CaptureGlueInput,\n";
return 1;
case Matcher::MoveChild:
}
case Matcher::CheckOpcode:
- OS << "OPC_CheckOpcode, "
- << cast<CheckOpcodeMatcher>(N)->getOpcode().getEnumName() << ",\n";
- return 2;
+ OS << "OPC_CheckOpcode, TARGET_VAL("
+ << cast<CheckOpcodeMatcher>(N)->getOpcode().getEnumName() << "),\n";
+ return 3;
case Matcher::SwitchOpcode:
case Matcher::SwitchType: {
// For each case we emit the size, then the opcode, then the matcher.
for (unsigned i = 0, e = NumCases; i != e; ++i) {
const Matcher *Child;
- if (const SwitchOpcodeMatcher *SOM = dyn_cast<SwitchOpcodeMatcher>(N))
+ unsigned IdxSize;
+ if (const SwitchOpcodeMatcher *SOM = dyn_cast<SwitchOpcodeMatcher>(N)) {
Child = SOM->getCaseMatcher(i);
- else
+ IdxSize = 2; // size of opcode in table is 2 bytes.
+ } else {
Child = cast<SwitchTypeMatcher>(N)->getCaseMatcher(i);
+ IdxSize = 1; // size of type in table is 1 byte.
+ }
// We need to encode the opcode and the offset of the case code before
// emitting the case code. Handle this by buffering the output into a
TmpBuf.clear();
raw_svector_ostream OS(TmpBuf);
formatted_raw_ostream FOS(OS);
- ChildSize = EmitMatcherList(Child, Indent+1, CurrentIdx+VBRSize+1, FOS);
+ ChildSize = EmitMatcherList(Child, Indent+1, CurrentIdx+VBRSize+IdxSize,
+ FOS);
} while (GetVBRSize(ChildSize) != VBRSize);
assert(ChildSize != 0 && "Should not have a zero-sized child!");
OS << ' ';
if (const SwitchOpcodeMatcher *SOM = dyn_cast<SwitchOpcodeMatcher>(N))
- OS << SOM->getCaseOpcode(i).getEnumName();
+ OS << "TARGET_VAL(" << SOM->getCaseOpcode(i).getEnumName() << "),";
else
- OS << getEnumName(cast<SwitchTypeMatcher>(N)->getCaseType(i));
- OS << ',';
-
+ OS << getEnumName(cast<SwitchTypeMatcher>(N)->getCaseType(i)) << ',';
+
+ CurrentIdx += IdxSize;
+
if (!OmitComments)
- OS << "// ->" << CurrentIdx+ChildSize+1;
+ OS << "// ->" << CurrentIdx+ChildSize;
OS << '\n';
- ++CurrentIdx;
OS << TmpBuf.str();
CurrentIdx += ChildSize;
}
}
case Matcher::CheckType:
+ assert(cast<CheckTypeMatcher>(N)->getResNo() == 0 &&
+ "FIXME: Add support for CheckType of resno != 0");
OS << "OPC_CheckType, "
<< getEnumName(cast<CheckTypeMatcher>(N)->getType()) << ",\n";
return 2;
return 2;
case Matcher::CheckComplexPat: {
- const ComplexPattern &Pattern =
- cast<CheckComplexPatMatcher>(N)->getPattern();
- OS << "OPC_CheckComplexPat, " << getComplexPat(Pattern) << ',';
+ const CheckComplexPatMatcher *CCPM = cast<CheckComplexPatMatcher>(N);
+ const ComplexPattern &Pattern = CCPM->getPattern();
+ OS << "OPC_CheckComplexPat, /*CP*/" << getComplexPat(Pattern) << ", /*#*/"
+ << CCPM->getMatchNumber() << ',';
+
if (!OmitComments) {
OS.PadToColumn(CommentIndent) << "// " << Pattern.getSelectFunc();
- OS << ": " << Pattern.getNumOperands() << " operands";
+ OS << ":$" << CCPM->getName();
+ for (unsigned i = 0, e = Pattern.getNumOperands(); i != e; ++i)
+ OS << " #" << CCPM->getFirstResult()+i;
+
if (Pattern.hasProperty(SDNPHasChain))
- OS << " + chain result and input";
+ OS << " + chain result";
}
OS << '\n';
- return 2;
+ return 3;
}
case Matcher::CheckAndImm: {
}
case Matcher::EmitRegister:
- OS << "OPC_EmitRegister, "
- << getEnumName(cast<EmitRegisterMatcher>(N)->getVT()) << ", ";
- if (Record *R = cast<EmitRegisterMatcher>(N)->getReg())
- OS << getQualifiedName(R) << ",\n";
- else {
- OS << "0 ";
- if (!OmitComments)
- OS << "/*zero_reg*/";
- OS << ",\n";
+ if (useEmitRegister2) {
+ OS << "OPC_EmitRegister2, "
+ << getEnumName(cast<EmitRegisterMatcher>(N)->getVT()) << ", ";
+ if (Record *R = cast<EmitRegisterMatcher>(N)->getReg())
+ OS << "TARGET_VAL(" << getQualifiedName(R) << "),\n";
+ else {
+ OS << "TARGET_VAL(0) ";
+ if (!OmitComments)
+ OS << "/*zero_reg*/";
+ OS << ",\n";
+ }
+ return 4;
+ } else {
+ OS << "OPC_EmitRegister, "
+ << getEnumName(cast<EmitRegisterMatcher>(N)->getVT()) << ", ";
+ if (Record *R = cast<EmitRegisterMatcher>(N)->getReg())
+ OS << getQualifiedName(R) << ",\n";
+ else {
+ OS << "0 ";
+ if (!OmitComments)
+ OS << "/*zero_reg*/";
+ OS << ",\n";
+ }
+ return 3;
}
- return 3;
case Matcher::EmitConvertToTarget:
OS << "OPC_EmitConvertToTarget, "
case Matcher::EmitMergeInputChains: {
const EmitMergeInputChainsMatcher *MN =
cast<EmitMergeInputChainsMatcher>(N);
+
+ // Handle the specialized forms OPC_EmitMergeInputChains1_0 and 1_1.
+ if (MN->getNumNodes() == 1 && MN->getNode(0) < 2) {
+ OS << "OPC_EmitMergeInputChains1_" << MN->getNode(0) << ",\n";
+ return 1;
+ }
+
OS << "OPC_EmitMergeInputChains, " << MN->getNumNodes() << ", ";
for (unsigned i = 0, e = MN->getNumNodes(); i != e; ++i)
OS << MN->getNode(i) << ", ";
case Matcher::MorphNodeTo: {
const EmitNodeMatcherCommon *EN = cast<EmitNodeMatcherCommon>(N);
OS << (isa<EmitNodeMatcher>(EN) ? "OPC_EmitNode" : "OPC_MorphNodeTo");
- OS << ", TARGET_OPCODE(" << EN->getOpcodeName() << "), 0";
+ OS << ", TARGET_VAL(" << EN->getOpcodeName() << "), 0";
if (EN->hasChain()) OS << "|OPFL_Chain";
- if (EN->hasInFlag()) OS << "|OPFL_FlagInput";
- if (EN->hasOutFlag()) OS << "|OPFL_FlagOutput";
+ if (EN->hasInFlag()) OS << "|OPFL_GlueInput";
+ if (EN->hasOutFlag()) OS << "|OPFL_GlueOutput";
if (EN->hasMemRefs()) OS << "|OPFL_MemRefs";
if (EN->getNumFixedArityOperands() != -1)
OS << "|OPFL_Variadic" << EN->getNumFixedArityOperands();
if (const MorphNodeToMatcher *SNT = dyn_cast<MorphNodeToMatcher>(N)) {
OS.PadToColumn(Indent*2) << "// Src: "
- << *SNT->getPattern().getSrcPattern() << '\n';
+ << *SNT->getPattern().getSrcPattern() << " - Complexity = "
+ << SNT->getPattern().getPatternComplexity(CGP) << '\n';
OS.PadToColumn(Indent*2) << "// Dst: "
<< *SNT->getPattern().getDstPattern() << '\n';
}
return 6+EN->getNumVTs()+NumOperandBytes;
}
- case Matcher::MarkFlagResults: {
- const MarkFlagResultsMatcher *CFR = cast<MarkFlagResultsMatcher>(N);
- OS << "OPC_MarkFlagResults, " << CFR->getNumNodes() << ", ";
+ case Matcher::MarkGlueResults: {
+ const MarkGlueResultsMatcher *CFR = cast<MarkGlueResultsMatcher>(N);
+ OS << "OPC_MarkGlueResults, " << CFR->getNumNodes() << ", ";
unsigned NumOperandBytes = 0;
for (unsigned i = 0, e = CFR->getNumNodes(); i != e; ++i)
NumOperandBytes += EmitVBRValue(CFR->getNode(i), OS);
OS << '\n';
if (!OmitComments) {
OS.PadToColumn(Indent*2) << "// Src: "
- << *CM->getPattern().getSrcPattern() << '\n';
+ << *CM->getPattern().getSrcPattern() << " - Complexity = "
+ << CM->getPattern().getPatternComplexity(CGP) << '\n';
OS.PadToColumn(Indent*2) << "// Dst: "
<< *CM->getPattern().getDstPattern();
}
formatted_raw_ostream &OS) {
unsigned Size = 0;
while (N) {
- if (unsigned(N->getKind()) >= Histogram.size())
- Histogram.resize(N->getKind()+1);
- Histogram[N->getKind()]++;
if (!OmitComments)
OS << "/*" << CurrentIdx << "*/";
unsigned MatcherSize = EmitMatcher(N, Indent, CurrentIdx, OS);
return Size;
}
-void MatcherTableEmitter::EmitPredicateFunctions(const CodeGenDAGPatterns &CGP,
- formatted_raw_ostream &OS) {
+void MatcherTableEmitter::EmitPredicateFunctions(formatted_raw_ostream &OS) {
// Emit pattern predicates.
if (!PatternPredicates.empty()) {
OS << "bool CheckPatternPredicate(unsigned PredNo) const {\n";
// Emit CompletePattern matchers.
// FIXME: This should be const.
if (!ComplexPatterns.empty()) {
- OS << "bool CheckComplexPattern(SDNode *Root, SDValue N,\n";
- OS << " unsigned PatternNo, SmallVectorImpl<SDValue> &Result) {\n";
+ OS << "bool CheckComplexPattern(SDNode *Root, SDNode *Parent, SDValue N,\n";
+ OS << " unsigned PatternNo,\n";
+ OS << " SmallVectorImpl<std::pair<SDValue, SDNode*> > &Result) {\n";
+ OS << " unsigned NextRes = Result.size();\n";
OS << " switch (PatternNo) {\n";
OS << " default: assert(0 && \"Invalid pattern # in table?\");\n";
for (unsigned i = 0, e = ComplexPatterns.size(); i != e; ++i) {
++NumOps; // Get the chained node too.
OS << " case " << i << ":\n";
- OS << " Result.resize(Result.size()+" << NumOps << ");\n";
+ OS << " Result.resize(NextRes+" << NumOps << ");\n";
OS << " return " << P.getSelectFunc();
- OS << "(Root, N";
+ OS << "(";
+ // If the complex pattern wants the root of the match, pass it in as the
+ // first argument.
+ if (P.hasProperty(SDNPWantRoot))
+ OS << "Root, ";
+
+ // If the complex pattern wants the parent of the operand being matched,
+ // pass it in as the next argument.
+ if (P.hasProperty(SDNPWantParent))
+ OS << "Parent, ";
+
+ OS << "N";
for (unsigned i = 0; i != NumOps; ++i)
- OS << ", Result[Result.size()-" << (NumOps-i) << ']';
+ OS << ", Result[NextRes+" << i << "].first";
OS << ");\n";
}
OS << " }\n";
}
}
-void MatcherTableEmitter::EmitHistogram(formatted_raw_ostream &OS) {
+static void BuildHistogram(const Matcher *M, std::vector<unsigned> &OpcodeFreq){
+ for (; M != 0; M = M->getNext()) {
+ // Count this node.
+ if (unsigned(M->getKind()) >= OpcodeFreq.size())
+ OpcodeFreq.resize(M->getKind()+1);
+ OpcodeFreq[M->getKind()]++;
+
+ // Handle recursive nodes.
+ if (const ScopeMatcher *SM = dyn_cast<ScopeMatcher>(M)) {
+ for (unsigned i = 0, e = SM->getNumChildren(); i != e; ++i)
+ BuildHistogram(SM->getChild(i), OpcodeFreq);
+ } else if (const SwitchOpcodeMatcher *SOM =
+ dyn_cast<SwitchOpcodeMatcher>(M)) {
+ for (unsigned i = 0, e = SOM->getNumCases(); i != e; ++i)
+ BuildHistogram(SOM->getCaseMatcher(i), OpcodeFreq);
+ } else if (const SwitchTypeMatcher *STM = dyn_cast<SwitchTypeMatcher>(M)) {
+ for (unsigned i = 0, e = STM->getNumCases(); i != e; ++i)
+ BuildHistogram(STM->getCaseMatcher(i), OpcodeFreq);
+ }
+ }
+}
+
+void MatcherTableEmitter::EmitHistogram(const Matcher *M,
+ formatted_raw_ostream &OS) {
if (OmitComments)
return;
+
+ std::vector<unsigned> OpcodeFreq;
+ BuildHistogram(M, OpcodeFreq);
+
OS << " // Opcode Histogram:\n";
- for (unsigned i = 0, e = Histogram.size(); i != e; ++i) {
+ for (unsigned i = 0, e = OpcodeFreq.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::CaptureGlueInput: OS << "OPC_CaptureGlueInput"; break;
case Matcher::MoveChild: OS << "OPC_MoveChild"; break;
case Matcher::MoveParent: OS << "OPC_MoveParent"; break;
case Matcher::CheckSame: OS << "OPC_CheckSame"; 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::MarkGlueResults: OS << "OPC_MarkGlueResults"; break;
case Matcher::CompleteMatch: OS << "OPC_CompleteMatch"; break;
}
- OS.PadToColumn(40) << " = " << Histogram[i] << '\n';
+ OS.PadToColumn(40) << " = " << OpcodeFreq[i] << '\n';
}
OS << '\n';
}
void llvm::EmitMatcherTable(const Matcher *TheMatcher,
- const CodeGenDAGPatterns &CGP, raw_ostream &O) {
+ const CodeGenDAGPatterns &CGP,
+ bool useEmitRegister2,
+ raw_ostream &O) {
formatted_raw_ostream OS(O);
OS << "// The main instruction selector code.\n";
OS << "SDNode *SelectCode(SDNode *N) {\n";
- MatcherTableEmitter MatcherEmitter;
+ MatcherTableEmitter MatcherEmitter(CGP, useEmitRegister2);
- OS << " // Opcodes are emitted as 2 bytes, TARGET_OPCODE handles this.\n";
- OS << " #define TARGET_OPCODE(X) X & 255, unsigned(X) >> 8\n";
+ OS << " // Some target values are emitted as 2 bytes, TARGET_VAL handles\n";
+ OS << " // this.\n";
+ OS << " #define TARGET_VAL(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);
+ MatcherEmitter.EmitHistogram(TheMatcher, OS);
- OS << " #undef TARGET_OPCODE\n";
+ OS << " #undef TARGET_VAL\n";
OS << " return SelectCodeCommon(N, MatcherTable,sizeof(MatcherTable));\n}\n";
OS << '\n';
// Next up, emit the function for node and pattern predicates:
- MatcherEmitter.EmitPredicateFunctions(CGP, OS);
+ MatcherEmitter.EmitPredicateFunctions(OS);
}
projects / oota-llvm.git / blobdiff