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Hoist a check to eliminate obvious mismatches as early as possible. Also, fix

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an 80-column violation in the generated code.  No functional change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162944 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chad Rosier 2012-08-30 21:43:05 +00:00
parent e757f00446
commit 0bad086d6d
1 changed files with 8 additions and 8 deletions
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16
utils/TableGen/AsmMatcherEmitter.cpp
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@ -2770,6 +2770,12 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << " MCInst &Inst, unsigned &ErrorInfo, ";
OS << "unsigned VariantID) {\n";
OS << " // Eliminate obvious mismatches.\n";
OS << " if (Operands.size() > " << (MaxNumOperands+1) << ") {\n";
OS << " ErrorInfo = " << (MaxNumOperands+1) << ";\n";
OS << " return Match_InvalidOperand;\n";
OS << " }\n\n";
// Emit code to get the available features.
OS << " // Get the current feature set.\n";
OS << " unsigned AvailableFeatures = getAvailableFeatures();\n\n";
@ -2786,12 +2792,6 @@ 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+1) << ") {\n";
OS << " ErrorInfo = " << (MaxNumOperands+1) << ";\n";
OS << " return Match_InvalidOperand;\n";
OS << " }\n\n";
OS << " // Some state to try to produce better error messages.\n";
OS << " bool HadMatchOtherThanFeatures = false;\n";
OS << " bool HadMatchOtherThanPredicate = false;\n";
@ -2856,8 +2856,8 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << " HadMatchOtherThanFeatures = true;\n";
OS << " unsigned NewMissingFeatures = it->RequiredFeatures & "
"~AvailableFeatures;\n";
OS << " if (CountPopulation_32(NewMissingFeatures) <= "
"CountPopulation_32(MissingFeatures))\n";
OS << " if (CountPopulation_32(NewMissingFeatures) <=\n"
" CountPopulation_32(MissingFeatures))\n";
OS << " MissingFeatures = NewMissingFeatures;\n";
OS << " continue;\n";
OS << " }\n";