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[ms-inline asm] Avoid a false positive assertion

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Assertion failed: (Start.isValid() == End.isValid() && "Start and end should 
either both be valid or both be invalid!")

when parsing inline asm.  SMLoc assumes that the first char * in the source is
invalid.  However, when parsing an inline asm the mnemonic is at this location.
I don't want to change SMLoc, so use a trivial workaround.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162381 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chad Rosier 2012-08-22 19:14:29 +00:00
parent 5f676fe139
commit 674101e6bb
1 changed files with 3 additions and 1 deletions
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4
lib/Target/X86/AsmParser/X86AsmParser.cpp
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@ -1677,8 +1677,10 @@ MatchInstruction(SMLoc IDLoc,
if ((Match1 == Match_MnemonicFail) && (Match2 == Match_MnemonicFail) &&
(Match3 == Match_MnemonicFail) && (Match4 == Match_MnemonicFail)) {
if (!WasOriginallyInvalidOperand) {
ArrayRef<SMRange> Ranges = matchingInlineAsm ? EmptyRanges :
Op->getLocRange();
return Error(IDLoc, "invalid instruction mnemonic '" + Base + "'",
Op->getLocRange(), matchingInlineAsm);
Ranges, matchingInlineAsm);
}
// Recover location info for the operand if we know which was the problem.