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change MatchInstructionImpl to return an enum instead of bool.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113165 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-09-06 19:22:17 +00:00
parent 702f2d42bb
commit 79ed3f77e8
3 changed files with 18 additions and 12 deletions
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2
lib/Target/ARM/AsmParser/ARMAsmParser.cpp
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@ -83,7 +83,7 @@ private:
bool MatchInstruction(SMLoc IDLoc,
const SmallVectorImpl<MCParsedAsmOperand*> &Operands,
MCInst &Inst) {
if (!MatchInstructionImpl(Operands, Inst))
if (MatchInstructionImpl(Operands, Inst) == Match_Success)
return false;
// FIXME: We should give nicer diagnostics about the exact failure.

10
lib/Target/X86/AsmParser/X86AsmParser.cpp
View File

@ -881,7 +881,7 @@ X86ATTAsmParser::MatchInstruction(SMLoc IDLoc,
assert(!Operands.empty() && "Unexpect empty operand list!");
// First, try a direct match.
if (!MatchInstructionImpl(Operands, Inst))
if (MatchInstructionImpl(Operands, Inst) == Match_Success)
return false;
// FIXME: Ideally, we would only attempt suffix matches for things which are
@ -901,13 +901,13 @@ X86ATTAsmParser::MatchInstruction(SMLoc IDLoc,
// Check for the various suffix matches.
Tmp[Base.size()] = 'b';
bool MatchB = MatchInstructionImpl(Operands, Inst);
bool MatchB = MatchInstructionImpl(Operands, Inst) != Match_Success;
Tmp[Base.size()] = 'w';
bool MatchW = MatchInstructionImpl(Operands, Inst);
bool MatchW = MatchInstructionImpl(Operands, Inst) != Match_Success;
Tmp[Base.size()] = 'l';
bool MatchL = MatchInstructionImpl(Operands, Inst);
bool MatchL = MatchInstructionImpl(Operands, Inst) != Match_Success;
Tmp[Base.size()] = 'q';
bool MatchQ = MatchInstructionImpl(Operands, Inst);
bool MatchQ = MatchInstructionImpl(Operands, Inst) != Match_Success;
// Restore the old token.
Op->setTokenValue(Base);

18
utils/TableGen/AsmMatcherEmitter.cpp
View File

@ -1544,9 +1544,14 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
// Information for the class declaration.
OS << "\n#ifdef GET_ASSEMBLER_HEADER\n";
OS << "#undef GET_ASSEMBLER_HEADER\n";
OS << " // This should be included into the middle of the declaration of \n";
OS << " // your subclasses implementation of TargetAsmParser.\n";
OS << " unsigned ComputeAvailableFeatures(const " <<
Target.getName() << "Subtarget *Subtarget) const;\n";
OS << "bool MatchInstructionImpl(const SmallVectorImpl<MCParsedAsmOperand*>"
OS << " enum MatchResultTy {\n";
OS << " Match_Success, Match_Fail\n";
OS << " };\n";
OS << " MatchResultTy MatchInstructionImpl(const SmallVectorImpl<MCParsedAsmOperand*>"
<< " &Operands, MCInst &Inst);\n\n";
OS << "#endif // GET_ASSEMBLER_HEADER_INFO\n\n";
@ -1594,7 +1599,8 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
it != ie; ++it)
MaxNumOperands = std::max(MaxNumOperands, (*it)->Operands.size());
OS << "bool " << Target.getName() << ClassName << "::\n"
OS << Target.getName() << ClassName << "::MatchResultTy "
<< Target.getName() << ClassName << "::\n"
<< "MatchInstructionImpl(const SmallVectorImpl<MCParsedAsmOperand*>"
<< " &Operands,\n";
OS << " MCInst &Inst) {\n";
@ -1653,7 +1659,7 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
// Emit code to compute the class list for this operand vector.
OS << " // Eliminate obvious mismatches.\n";
OS << " if (Operands.size() > " << MaxNumOperands << ")\n";
OS << " return true;\n\n";
OS << " return Match_Fail;\n\n";
OS << " // Compute the class list for this operand vector.\n";
OS << " MatchClassKind Classes[" << MaxNumOperands << "];\n";
@ -1662,7 +1668,7 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << " // Check for invalid operands before matching.\n";
OS << " if (Classes[i] == InvalidMatchClass)\n";
OS << " return true;\n";
OS << " return Match_Fail;\n";
OS << " }\n\n";
OS << " // Mark unused classes.\n";
@ -1697,10 +1703,10 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
if (!InsnCleanupFn.empty())
OS << " " << InsnCleanupFn << "(Inst);\n";
OS << " return false;\n";
OS << " return Match_Success;\n";
OS << " }\n\n";
OS << " return true;\n";
OS << " return Match_Fail;\n";
OS << "}\n\n";
OS << "#endif // GET_MATCHER_IMPLEMENTATION\n\n";