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Prefer diagnostics from target predicate in asm matcher.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137742 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2011-08-16 20:12:35 +00:00
parent 1b84cce77f
commit 578071a087
1 changed files with 5 additions and 2 deletions
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7
utils/TableGen/AsmMatcherEmitter.cpp
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@ -2349,6 +2349,7 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << " // Some state to try to produce better error messages.\n";
OS << " bool HadMatchOtherThanFeatures = false;\n";
OS << " bool HadMatchOtherThanPredicate = false;\n";
OS << " unsigned RetCode = Match_InvalidOperand;\n";
OS << " // Set ErrorInfo to the operand that mismatches if it is\n";
OS << " // wrong for all instances of the instruction.\n";
@ -2413,6 +2414,7 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
<< " Match_Success) {\n"
<< " Inst.clear();\n"
<< " RetCode = MatchResult;\n"
<< " HadMatchOtherThanPredicate = true;\n"
<< " continue;\n"
<< " }\n\n";
@ -2426,8 +2428,9 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << " }\n\n";
OS << " // Okay, we had no match. Try to return a useful error code.\n";
OS << " if (HadMatchOtherThanFeatures) return Match_MissingFeature;\n";
OS << " return RetCode;\n";
OS << " if (HadMatchOtherThanPredicate || !HadMatchOtherThanFeatures)";
OS << " return RetCode;\n";
OS << " return Match_MissingFeature;\n";
OS << "}\n\n";
if (Info.OperandMatchInfo.size())