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Don't automatically set the "fc" bits on MSR instructions if the user didn't ask for them. This is a divergence from gas' behavior, but it is correct per the documentation and allows us to forge ahead with roundtrip testing. 

llvm-svn: 142669
This commit is contained in:
Owen Anderson 2011-10-21 18:43:28 +00:00
parent 4d4363ba56
commit 03a173eb71
1 changed files with 7 additions and 3 deletions
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10
llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
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@ -2588,9 +2588,13 @@ parseMSRMaskOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
} else // No match for special register.
return MatchOperand_NoMatch;
// Special register without flags are equivalent to "fc" flags.
if (!FlagsVal)
FlagsVal = 0x9;
// Special register without flags is NOT equivalent to "fc" flags.
// NOTE: This is a divergence from gas' behavior. Uncommenting the following
// two lines would enable gas compatibility at the expense of breaking
// round-tripping.
//
// if (!FlagsVal)
// FlagsVal = 0x9;
// Bit 4: Special Reg (cpsr, apsr => 0; spsr => 1)
if (SpecReg == "spsr")