diff options
Diffstat (limited to 'lib/Target/ARM/AsmParser/ARMAsmParser.cpp')
| -rw-r--r-- | lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp index 1fde5a2e79..3ee3db5b02 100644 --- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp +++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp @@ -5347,6 +5347,12 @@ validateInstruction(MCInst &Inst, case ARM::tMUL: { // The second source operand must be the same register as the destination // operand. + // + // In this case, we must directly check the parsed operands because the + // cvtThumbMultiply() function is written in such a way that it guarantees + // this first statement is always true for the new Inst. Essentially, the + // destination is unconditionally copied into the second source operand + // without checking to see if it matches what we actually parsed. if (Operands.size() == 6 && (((ARMOperand*)Operands[3])->getReg() != ((ARMOperand*)Operands[5])->getReg()) && |