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Prevent ARM Assembler crashing on unrecognised assembly format for DSB instruction

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159257 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Barton 2012-06-27 09:36:19 +00:00
parent 7d85f87acb
commit b69182095c
1 changed files with 2 additions and 1 deletions
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3
lib/Target/ARM/AsmParser/ARMAsmParser.cpp
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@ -3256,7 +3256,8 @@ ARMAsmParser::OperandMatchResultTy ARMAsmParser::
parseMemBarrierOptOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
SMLoc S = Parser.getTok().getLoc();
const AsmToken &Tok = Parser.getTok();
assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
if (!Tok.is(AsmToken::Identifier))
return MatchOperand_NoMatch;
StringRef OptStr = Tok.getString();
unsigned Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()))