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emit the match table at global scope instead of within the

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MatchInstructionImpl. This makes it easier to read/understand
MatchInstructionImpl.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113170 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-09-06 21:08:38 +00:00
parent e206fcf0e9
commit 96352e5ceb
1 changed files with 25 additions and 20 deletions
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45
utils/TableGen/AsmMatcherEmitter.cpp
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@ -1604,20 +1604,14 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
// Emit the available features compute function.
EmitComputeAvailableFeatures(Target, Info, OS);
// Finally, build the match function.
size_t MaxNumOperands = 0;
for (std::vector<InstructionInfo*>::const_iterator it =
Info.Instructions.begin(), ie = Info.Instructions.end();
it != ie; ++it)
MaxNumOperands = std::max(MaxNumOperands, (*it)->Operands.size());
OS << Target.getName() << ClassName << "::MatchResultTy "
<< Target.getName() << ClassName << "::\n"
<< "MatchInstructionImpl(const SmallVectorImpl<MCParsedAsmOperand*>"
<< " &Operands,\n";
OS << " MCInst &Inst) {\n";
// Emit the static match table; unused classes get initalized to 0 which is
// guaranteed to be InvalidMatchClass.
//
@ -1628,22 +1622,27 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
// order the match kinds appropriately (putting mnemonics last), then we
// should only end up using a few bits for each class, especially the ones
// following the mnemonic.
OS << " static const struct MatchEntry {\n";
OS << "namespace {\n";
OS << " struct MatchEntry {\n";
OS << " unsigned Opcode;\n";
OS << " const char *Mnemonic;\n";
OS << " ConversionKind ConvertFn;\n";
OS << " MatchClassKind Classes[" << MaxNumOperands << "];\n";
OS << " unsigned RequiredFeatures;\n";
OS << " } MatchTable[" << Info.Instructions.size() << "] = {\n";
OS << " };\n";
OS << "} // end anonymous namespace.\n\n";
OS << "static const MatchEntry MatchTable["
<< Info.Instructions.size() << "] = {\n";
for (std::vector<InstructionInfo*>::const_iterator it =
Info.Instructions.begin(), ie = Info.Instructions.end();
Info.Instructions.begin(), ie = Info.Instructions.end();
it != ie; ++it) {
InstructionInfo &II = **it;
OS << " { " << Target.getName() << "::" << II.InstrName
<< ", \"" << II.Tokens[0] << "\""
<< ", " << II.ConversionFnKind << ", { ";
OS << " { " << Target.getName() << "::" << II.InstrName
<< ", \"" << II.Tokens[0] << "\""
<< ", " << II.ConversionFnKind << ", { ";
for (unsigned i = 0, e = II.Operands.size(); i != e; ++i) {
InstructionInfo::Operand &Op = II.Operands[i];
@ -1651,7 +1650,7 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << Op.Class->Name;
}
OS << " }, ";
// Write the required features mask.
if (!II.RequiredFeatures.empty()) {
for (unsigned i = 0, e = II.RequiredFeatures.size(); i != e; ++i) {
@ -1660,12 +1659,18 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
}
} else
OS << "0";
OS << "},\n";
}
OS << "};\n\n";
OS << " };\n\n";
// Finally, build the match function.
OS << Target.getName() << ClassName << "::MatchResultTy "
<< Target.getName() << ClassName << "::\n"
<< "MatchInstructionImpl(const SmallVectorImpl<MCParsedAsmOperand*>"
<< " &Operands,\n";
OS << " MCInst &Inst) {\n";
// Emit code to get the available features.
OS << " // Get the current feature set.\n";