diff options
| -rw-r--r-- | lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp index 67a464fa8a..0b585c1dad 100644 --- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp +++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp @@ -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") |