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Perform the string table optimization for OperandMatchEntries too.

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llvm-svn: 151986
This commit is contained in:
Benjamin Kramer 2012-03-03 20:44:43 +00:00
parent ed4150f84d
commit 6f40ab7172
1 changed files with 28 additions and 10 deletions
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38
utils/TableGen/AsmMatcherEmitter.cpp
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@ -2023,40 +2023,48 @@ static void EmitCustomOperandParsing(raw_ostream &OS, CodeGenTarget &Target,
// Emit the static custom operand parsing table;
OS << "namespace {\n";
OS << " struct OperandMatchEntry {\n";
OS << " const char *Mnemonic;\n";
OS << " static const char *MnemonicTable;\n";
OS << " unsigned OperandMask;\n";
OS << " MatchClassKind Class;\n";
OS << " unsigned RequiredFeatures;\n";
OS << " uint16_t Mnemonic;\n";
OS << " " << getMinimalTypeForRange(Info.Classes.size())
<< " Class;\n";
OS << " " << getMinimalTypeForRange(1ULL << Info.SubtargetFeatures.size())
<< " RequiredFeatures;\n\n";
OS << " StringRef getMnemonic() const {\n";
OS << " return StringRef(MnemonicTable + Mnemonic + 1,\n";
OS << " MnemonicTable[Mnemonic]);\n";
OS << " }\n";
OS << " };\n\n";
OS << " // Predicate for searching for an opcode.\n";
OS << " struct LessOpcodeOperand {\n";
OS << " bool operator()(const OperandMatchEntry &LHS, StringRef RHS) {\n";
OS << " return StringRef(LHS.Mnemonic) < RHS;\n";
OS << " return LHS.getMnemonic() < RHS;\n";
OS << " }\n";
OS << " bool operator()(StringRef LHS, const OperandMatchEntry &RHS) {\n";
OS << " return LHS < StringRef(RHS.Mnemonic);\n";
OS << " return LHS < RHS.getMnemonic();\n";
OS << " }\n";
OS << " bool operator()(const OperandMatchEntry &LHS,";
OS << " const OperandMatchEntry &RHS) {\n";
OS << " return StringRef(LHS.Mnemonic) < StringRef(RHS.Mnemonic);\n";
OS << " return LHS.getMnemonic() < RHS.getMnemonic();\n";
OS << " }\n";
OS << " };\n";
OS << "} // end anonymous namespace.\n\n";
StringToOffsetTable StringTable;
OS << "static const OperandMatchEntry OperandMatchTable["
<< Info.OperandMatchInfo.size() << "] = {\n";
OS << " /* Mnemonic, Operand List Mask, Operand Class, Features */\n";
OS << " /* Operand List Mask, Mnemonic, Operand Class, Features */\n";
for (std::vector<OperandMatchEntry>::const_iterator it =
Info.OperandMatchInfo.begin(), ie = Info.OperandMatchInfo.end();
it != ie; ++it) {
const OperandMatchEntry &OMI = *it;
const MatchableInfo &II = *OMI.MI;
OS << " { \"" << II.Mnemonic << "\""
<< ", " << OMI.OperandMask;
OS << " { " << OMI.OperandMask;
OS << " /* ";
bool printComma = false;
@ -2069,6 +2077,11 @@ static void EmitCustomOperandParsing(raw_ostream &OS, CodeGenTarget &Target,
}
OS << " */";
// Store a pascal-style length byte in the mnemonic.
std::string LenMnemonic = char(II.Mnemonic.size()) + II.Mnemonic.str();
OS << ", " << StringTable.GetOrAddStringOffset(LenMnemonic, false)
<< " /* " << II.Mnemonic << " */";
OS << ", " << OMI.CI->Name
<< ", ";
@ -2084,6 +2097,10 @@ static void EmitCustomOperandParsing(raw_ostream &OS, CodeGenTarget &Target,
}
OS << "};\n\n";
OS << "const char *OperandMatchEntry::MnemonicTable =\n";
StringTable.EmitString(OS);
OS << ";\n\n";
// Emit the operand class switch to call the correct custom parser for
// the found operand class.
OS << Target.getName() << ClassName << "::OperandMatchResultTy "
@ -2137,7 +2154,7 @@ static void EmitCustomOperandParsing(raw_ostream &OS, CodeGenTarget &Target,
<< " *ie = MnemonicRange.second; it != ie; ++it) {\n";
OS << " // equal_range guarantees that instruction mnemonic matches.\n";
OS << " assert(Mnemonic == it->Mnemonic);\n\n";
OS << " assert(Mnemonic == it->getMnemonic());\n\n";
// Emit check that the required features are available.
OS << " // check if the available features match\n";
@ -2349,6 +2366,7 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << " { " << Target.getName() << "::"
<< II.getResultInst()->TheDef->getName() << ", "
<< StringTable.GetOrAddStringOffset(LenMnemonic, false)
<< " /* " << II.Mnemonic << " */"
<< ", " << II.ConversionFnKind << ", { ";
for (unsigned i = 0, e = II.AsmOperands.size(); i != e; ++i) {
MatchableInfo::AsmOperand &Op = II.AsmOperands[i];