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ARM asm parsing should handle pre-indexed writeback w/o immediate.

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For example, 'ldrb r9, [sp]!' is odd, but valid.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140035 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2011-09-19 18:42:21 +00:00
parent d9746fe58a
commit fb12f35545
1 changed files with 7 additions and 0 deletions
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7
lib/Target/ARM/AsmParser/ARMAsmParser.cpp
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@ -2807,6 +2807,13 @@ parseMemory(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0, ARM_AM::no_shift,
0, false, S, E));
// If there's a pre-indexing writeback marker, '!', just add it as a token
// operand. It's rather odd, but syntactically valid.
if (Parser.getTok().is(AsmToken::Exclaim)) {
Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
Parser.Lex(); // Eat the '!'.
}
return false;
}