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Add command-line flag to tblgen to turn off generating comments for the new

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isel (defaults it to generate comments).
This reduces the size of the generated source file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97470 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Torok Edwin 2010-03-01 18:49:10 +00:00
parent 7390eebd49
commit 5c7fc88b55
1 changed files with 117 additions and 57 deletions
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174
utils/TableGen/DAGISelMatcherEmitter.cpp
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@ -17,6 +17,7 @@
#include "llvm/ADT/DenseMap.h" #include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallString.h" #include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringMap.h" #include "llvm/ADT/StringMap.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FormattedStream.h" #include "llvm/Support/FormattedStream.h"
using namespace llvm; using namespace llvm;
@ -24,6 +25,11 @@ enum {
CommentIndent = 30 CommentIndent = 30
}; };
// To reduce generated source code size.
static cl::opt<bool>
OmitComments("omit-comments", cl::desc("Do not generate comments"),
cl::init(false));
namespace { namespace {
class MatcherTableEmitter { class MatcherTableEmitter {
StringMap<unsigned> NodePredicateMap, PatternPredicateMap; StringMap<unsigned> NodePredicateMap, PatternPredicateMap;
@ -116,7 +122,10 @@ static uint64_t EmitVBRValue(uint64_t Val, raw_ostream &OS) {
Val >>= 7; Val >>= 7;
++NumBytes; ++NumBytes;
} }
OS << Val << "/*" << InVal << "*/, "; OS << Val;
if (!OmitComments)
OS << "/*" << InVal << "*/";
OS << ", ";
return NumBytes+1; return NumBytes+1;
} }
@ -139,9 +148,12 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
if (i == 0) { if (i == 0) {
OS << "OPC_Scope, "; OS << "OPC_Scope, ";
++CurrentIdx; ++CurrentIdx;
} else { } else {
OS << "/*" << CurrentIdx << "*/"; if (!OmitComments) {
OS.PadToColumn(Indent*2) << "/*Scope*/ "; OS << "/*" << CurrentIdx << "*/";
OS.PadToColumn(Indent*2) << "/*Scope*/ ";
} else
OS.PadToColumn(Indent*2);
} }
// We need to encode the child and the offset of the failure code before // We need to encode the child and the offset of the failure code before
@ -165,35 +177,45 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
assert(ChildSize != 0 && "Should not have a zero-sized child!"); assert(ChildSize != 0 && "Should not have a zero-sized child!");
CurrentIdx += EmitVBRValue(ChildSize, OS); CurrentIdx += EmitVBRValue(ChildSize, OS);
OS << "/*->" << CurrentIdx+ChildSize << "*/"; if (!OmitComments) {
OS << "/*->" << CurrentIdx+ChildSize << "*/";
if (i == 0) if (i == 0)
OS.PadToColumn(CommentIndent) << "// " << SM->getNumChildren() OS.PadToColumn(CommentIndent) << "// " << SM->getNumChildren()
<< " children in Scope"; << " children in Scope";
}
OS << '\n' << TmpBuf.str(); OS << '\n' << TmpBuf.str();
CurrentIdx += ChildSize; CurrentIdx += ChildSize;
} }
// Emit a zero as a sentinel indicating end of 'Scope'. // Emit a zero as a sentinel indicating end of 'Scope'.
OS << "/*" << CurrentIdx << "*/"; if (!OmitComments)
OS.PadToColumn(Indent*2) << "0, /*End of Scope*/\n"; OS << "/*" << CurrentIdx << "*/";
OS.PadToColumn(Indent*2) << "0, ";
if (!OmitComments)
OS << "/*End of Scope*/";
OS << '\n';
return CurrentIdx - StartIdx + 1; return CurrentIdx - StartIdx + 1;
} }
case Matcher::RecordNode: case Matcher::RecordNode:
OS << "OPC_RecordNode,"; OS << "OPC_RecordNode,";
OS.PadToColumn(CommentIndent) << "// #" if (!OmitComments)
<< cast<RecordMatcher>(N)->getResultNo() << " = " OS.PadToColumn(CommentIndent) << "// #"
<< cast<RecordMatcher>(N)->getWhatFor() << '\n'; << cast<RecordMatcher>(N)->getResultNo() << " = "
<< cast<RecordMatcher>(N)->getWhatFor();
OS << '\n';
return 1; return 1;
case Matcher::RecordChild: case Matcher::RecordChild:
OS << "OPC_RecordChild" << cast<RecordChildMatcher>(N)->getChildNo() OS << "OPC_RecordChild" << cast<RecordChildMatcher>(N)->getChildNo()
<< ','; << ',';
OS.PadToColumn(CommentIndent) << "// #" if (!OmitComments)
<< cast<RecordChildMatcher>(N)->getResultNo() << " = " OS.PadToColumn(CommentIndent) << "// #"
<< cast<RecordChildMatcher>(N)->getWhatFor() << '\n'; << cast<RecordChildMatcher>(N)->getResultNo() << " = "
<< cast<RecordChildMatcher>(N)->getWhatFor();
OS << '\n';
return 1; return 1;
case Matcher::RecordMemRef: case Matcher::RecordMemRef:
@ -220,13 +242,17 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
case Matcher::CheckPatternPredicate: { case Matcher::CheckPatternPredicate: {
StringRef Pred = cast<CheckPatternPredicateMatcher>(N)->getPredicate(); StringRef Pred = cast<CheckPatternPredicateMatcher>(N)->getPredicate();
OS << "OPC_CheckPatternPredicate, " << getPatternPredicate(Pred) << ','; OS << "OPC_CheckPatternPredicate, " << getPatternPredicate(Pred) << ',';
OS.PadToColumn(CommentIndent) << "// " << Pred << '\n'; if (!OmitComments)
OS.PadToColumn(CommentIndent) << "// " << Pred;
OS << '\n';
return 2; return 2;
} }
case Matcher::CheckPredicate: { case Matcher::CheckPredicate: {
StringRef Pred = cast<CheckPredicateMatcher>(N)->getPredicateName(); StringRef Pred = cast<CheckPredicateMatcher>(N)->getPredicateName();
OS << "OPC_CheckPredicate, " << getNodePredicate(Pred) << ','; OS << "OPC_CheckPredicate, " << getNodePredicate(Pred) << ',';
OS.PadToColumn(CommentIndent) << "// " << Pred << '\n'; if (!OmitComments)
OS.PadToColumn(CommentIndent) << "// " << Pred;
OS << '\n';
return 2; return 2;
} }
@ -238,7 +264,10 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
case Matcher::SwitchOpcode: { case Matcher::SwitchOpcode: {
unsigned StartIdx = CurrentIdx; unsigned StartIdx = CurrentIdx;
const SwitchOpcodeMatcher *SOM = cast<SwitchOpcodeMatcher>(N); const SwitchOpcodeMatcher *SOM = cast<SwitchOpcodeMatcher>(N);
OS << "OPC_SwitchOpcode /*" << SOM->getNumCases() << " cases */, "; OS << "OPC_SwitchOpcode ";
if (!OmitComments)
OS << "/*" << SOM->getNumCases() << " cases */";
OS << ", ";
++CurrentIdx; ++CurrentIdx;
// For each case we emit the size, then the opcode, then the matcher. // For each case we emit the size, then the opcode, then the matcher.
@ -263,21 +292,28 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
assert(ChildSize != 0 && "Should not have a zero-sized child!"); assert(ChildSize != 0 && "Should not have a zero-sized child!");
if (i != 0) if (i != 0) {
OS.PadToColumn(Indent*2) << "/*SwitchOpcode*/ "; OS.PadToColumn(Indent*2);
if (!OmitComments)
OS << "/*SwitchOpcode*/ ";
}
// Emit the VBR. // Emit the VBR.
CurrentIdx += EmitVBRValue(ChildSize, OS); CurrentIdx += EmitVBRValue(ChildSize, OS);
OS << " " << SOM->getCaseOpcode(i).getEnumName() << ","; OS << " " << SOM->getCaseOpcode(i).getEnumName() << ",";
OS << "// ->" << CurrentIdx+ChildSize+1 << '\n'; if (!OmitComments)
OS << "// ->" << CurrentIdx+ChildSize+1;
OS << '\n';
++CurrentIdx; ++CurrentIdx;
OS << TmpBuf.str(); OS << TmpBuf.str();
CurrentIdx += ChildSize; CurrentIdx += ChildSize;
} }
// Emit the final zero to terminate the switch. // Emit the final zero to terminate the switch.
OS.PadToColumn(Indent*2) << "0, // EndSwitchOpcode\n"; OS.PadToColumn(Indent*2) << "0, ";
if (!OmitComments)
OS << "// EndSwitchOpcode";
++CurrentIdx; ++CurrentIdx;
return CurrentIdx-StartIdx; return CurrentIdx-StartIdx;
} }
@ -309,10 +345,12 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
const ComplexPattern &Pattern = const ComplexPattern &Pattern =
cast<CheckComplexPatMatcher>(N)->getPattern(); cast<CheckComplexPatMatcher>(N)->getPattern();
OS << "OPC_CheckComplexPat, " << getComplexPat(Pattern) << ','; OS << "OPC_CheckComplexPat, " << getComplexPat(Pattern) << ',';
OS.PadToColumn(CommentIndent) << "// " << Pattern.getSelectFunc(); if (!OmitComments) {
OS << ": " << Pattern.getNumOperands() << " operands"; OS.PadToColumn(CommentIndent) << "// " << Pattern.getSelectFunc();
if (Pattern.hasProperty(SDNPHasChain)) OS << ": " << Pattern.getNumOperands() << " operands";
OS << " + chain result and input"; if (Pattern.hasProperty(SDNPHasChain))
OS << " + chain result and input";
}
OS << '\n'; OS << '\n';
return 2; return 2;
} }
@ -353,8 +391,12 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
<< getEnumName(cast<EmitRegisterMatcher>(N)->getVT()) << ", "; << getEnumName(cast<EmitRegisterMatcher>(N)->getVT()) << ", ";
if (Record *R = cast<EmitRegisterMatcher>(N)->getReg()) if (Record *R = cast<EmitRegisterMatcher>(N)->getReg())
OS << getQualifiedName(R) << ",\n"; OS << getQualifiedName(R) << ",\n";
else else {
OS << "0 /*zero_reg*/,\n"; OS << "0 ";
if (!OmitComments)
OS << "/*zero_reg*/";
OS << ",\n";
}
return 3; return 3;
case Matcher::EmitConvertToTarget: case Matcher::EmitConvertToTarget:
@ -381,7 +423,9 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
const EmitNodeXFormMatcher *XF = cast<EmitNodeXFormMatcher>(N); const EmitNodeXFormMatcher *XF = cast<EmitNodeXFormMatcher>(N);
OS << "OPC_EmitNodeXForm, " << getNodeXFormID(XF->getNodeXForm()) << ", " OS << "OPC_EmitNodeXForm, " << getNodeXFormID(XF->getNodeXForm()) << ", "
<< XF->getSlot() << ','; << XF->getSlot() << ',';
OS.PadToColumn(CommentIndent) << "// "<<XF->getNodeXForm()->getName()<<'\n'; if (!OmitComments)
OS.PadToColumn(CommentIndent) << "// "<<XF->getNodeXForm()->getName();
OS <<'\n';
return 3; return 3;
} }
@ -399,11 +443,17 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
OS << "|OPFL_Variadic" << EN->getNumFixedArityOperands(); OS << "|OPFL_Variadic" << EN->getNumFixedArityOperands();
OS << ",\n"; OS << ",\n";
OS.PadToColumn(Indent*2+4) << EN->getNumVTs() << "/*#VTs*/, "; OS.PadToColumn(Indent*2+4) << EN->getNumVTs();
if (!OmitComments)
OS << "/*#VTs*/";
OS << ", ";
for (unsigned i = 0, e = EN->getNumVTs(); i != e; ++i) for (unsigned i = 0, e = EN->getNumVTs(); i != e; ++i)
OS << getEnumName(EN->getVT(i)) << ", "; OS << getEnumName(EN->getVT(i)) << ", ";
OS << EN->getNumOperands() << "/*#Ops*/, "; OS << EN->getNumOperands();
if (!OmitComments)
OS << "/*#Ops*/";
OS << ", ";
unsigned NumOperandBytes = 0; unsigned NumOperandBytes = 0;
for (unsigned i = 0, e = EN->getNumOperands(); i != e; ++i) { for (unsigned i = 0, e = EN->getNumOperands(); i != e; ++i) {
// We emit the operand numbers in VBR encoded format, in case the number // We emit the operand numbers in VBR encoded format, in case the number
@ -411,24 +461,26 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
NumOperandBytes += EmitVBRValue(EN->getOperand(i), OS); NumOperandBytes += EmitVBRValue(EN->getOperand(i), OS);
} }
// Print the result #'s for EmitNode. if (!OmitComments) {
if (const EmitNodeMatcher *E = dyn_cast<EmitNodeMatcher>(EN)) { // Print the result #'s for EmitNode.
if (unsigned NumResults = EN->getNumVTs()) { if (const EmitNodeMatcher *E = dyn_cast<EmitNodeMatcher>(EN)) {
OS.PadToColumn(CommentIndent) << "// Results = "; if (unsigned NumResults = EN->getNumVTs()) {
unsigned First = E->getFirstResultSlot(); OS.PadToColumn(CommentIndent) << "// Results = ";
for (unsigned i = 0; i != NumResults; ++i) unsigned First = E->getFirstResultSlot();
OS << "#" << First+i << " "; for (unsigned i = 0; i != NumResults; ++i)
OS << "#" << First+i << " ";
}
} }
} OS << '\n';
OS << '\n';
if (const MorphNodeToMatcher *SNT = dyn_cast<MorphNodeToMatcher>(N)) {
if (const MorphNodeToMatcher *SNT = dyn_cast<MorphNodeToMatcher>(N)) { OS.PadToColumn(Indent*2) << "// Src: "
OS.PadToColumn(Indent*2) << "// Src: " << *SNT->getPattern().getSrcPattern() << '\n';
<< *SNT->getPattern().getSrcPattern() << '\n'; OS.PadToColumn(Indent*2) << "// Dst: "
OS.PadToColumn(Indent*2) << "// Dst: " << *SNT->getPattern().getDstPattern() << '\n';
<< *SNT->getPattern().getDstPattern() << '\n'; }
} else
} OS << '\n';
return 6+EN->getNumVTs()+NumOperandBytes; return 6+EN->getNumVTs()+NumOperandBytes;
} }
@ -448,10 +500,13 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
for (unsigned i = 0, e = CM->getNumResults(); i != e; ++i) for (unsigned i = 0, e = CM->getNumResults(); i != e; ++i)
NumResultBytes += EmitVBRValue(CM->getResult(i), OS); NumResultBytes += EmitVBRValue(CM->getResult(i), OS);
OS << '\n'; OS << '\n';
OS.PadToColumn(Indent*2) << "// Src: " if (!OmitComments) {
<< *CM->getPattern().getSrcPattern() << '\n'; OS.PadToColumn(Indent*2) << "// Src: "
OS.PadToColumn(Indent*2) << "// Dst: " << *CM->getPattern().getSrcPattern() << '\n';
<< *CM->getPattern().getDstPattern() << '\n'; OS.PadToColumn(Indent*2) << "// Dst: "
<< *CM->getPattern().getDstPattern();
}
OS << '\n';
return 2 + NumResultBytes; return 2 + NumResultBytes;
} }
} }
@ -468,8 +523,8 @@ EmitMatcherList(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
if (unsigned(N->getKind()) >= Histogram.size()) if (unsigned(N->getKind()) >= Histogram.size())
Histogram.resize(N->getKind()+1); Histogram.resize(N->getKind()+1);
Histogram[N->getKind()]++; Histogram[N->getKind()]++;
if (!OmitComments)
OS << "/*" << CurrentIdx << "*/"; OS << "/*" << CurrentIdx << "*/";
unsigned MatcherSize = EmitMatcher(N, Indent, CurrentIdx, OS); unsigned MatcherSize = EmitMatcher(N, Indent, CurrentIdx, OS);
Size += MatcherSize; Size += MatcherSize;
CurrentIdx += MatcherSize; CurrentIdx += MatcherSize;
@ -581,7 +636,10 @@ void MatcherTableEmitter::EmitPredicateFunctions(const CodeGenDAGPatterns &CGP,
Record *SDNode = Entry.first; Record *SDNode = Entry.first;
const std::string &Code = Entry.second; const std::string &Code = Entry.second;
OS << " case " << i << ": { // " << NodeXForms[i]->getName() << '\n'; OS << " case " << i << ": { ";
if (!OmitComments)
OS << "// " << NodeXForms[i]->getName();
OS << '\n';
std::string ClassName = CGP.getSDNodeInfo(SDNode).getSDClassName(); std::string ClassName = CGP.getSDNodeInfo(SDNode).getSDClassName();
if (ClassName == "SDNode") if (ClassName == "SDNode")
@ -597,6 +655,8 @@ void MatcherTableEmitter::EmitPredicateFunctions(const CodeGenDAGPatterns &CGP,
} }
void MatcherTableEmitter::EmitHistogram(formatted_raw_ostream &OS) { void MatcherTableEmitter::EmitHistogram(formatted_raw_ostream &OS) {
if (OmitComments)
return;
OS << " // Opcode Histogram:\n"; OS << " // Opcode Histogram:\n";
for (unsigned i = 0, e = Histogram.size(); i != e; ++i) { for (unsigned i = 0, e = Histogram.size(); i != e; ++i) {
OS << " // #"; OS << " // #";
@ -663,7 +723,7 @@ void llvm::EmitMatcherTable(const Matcher *TheMatcher,
OS << " #undef TARGET_OPCODE\n"; OS << " #undef TARGET_OPCODE\n";
OS << " return SelectCodeCommon(N, MatcherTable,sizeof(MatcherTable));\n}\n"; OS << " return SelectCodeCommon(N, MatcherTable,sizeof(MatcherTable));\n}\n";
OS << "\n"; OS << '\n';
// Next up, emit the function for node and pattern predicates: // Next up, emit the function for node and pattern predicates:
MatcherEmitter.EmitPredicateFunctions(CGP, OS); MatcherEmitter.EmitPredicateFunctions(CGP, OS);