diff options
| -rw-r--r-- | llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 16 | ||||
| -rw-r--r-- | llvm/test/MC/ARM/basic-thumb-instructions.s | 2 |
2 files changed, 11 insertions, 7 deletions
diff --git a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp index f142e686df1..d8870532daf 100644 --- a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp +++ b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp @@ -3415,13 +3415,15 @@ cvtThumbMultiply(MCInst &Inst, unsigned Opcode, } ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1); ((ARMOperand*)Operands[1])->addCCOutOperands(Inst, 1); - ((ARMOperand*)Operands[4])->addRegOperands(Inst, 1); - // If we have a three-operand form, use that, else the second source operand - // is just the destination operand again. - if (Operands.size() == 6) - ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1); - else - Inst.addOperand(Inst.getOperand(0)); + // If we have a three-operand form, make sure to set Rn to be the operand + // that isn't the same as Rd. + unsigned RegOp = 4; + if (Operands.size() == 6 && + ((ARMOperand*)Operands[4])->getReg() == + ((ARMOperand*)Operands[3])->getReg()) + RegOp = 5; + ((ARMOperand*)Operands[RegOp])->addRegOperands(Inst, 1); + Inst.addOperand(Inst.getOperand(0)); ((ARMOperand*)Operands[2])->addCondCodeOperands(Inst, 2); return true; diff --git a/llvm/test/MC/ARM/basic-thumb-instructions.s b/llvm/test/MC/ARM/basic-thumb-instructions.s index 0fa52b09874..6e830cd557f 100644 --- a/llvm/test/MC/ARM/basic-thumb-instructions.s +++ b/llvm/test/MC/ARM/basic-thumb-instructions.s @@ -372,9 +372,11 @@ _func: @ MUL @------------------------------------------------------------------------------ muls r1, r2, r1 + muls r2, r2, r3 muls r3, r4 @ CHECK: muls r1, r2, r1 @ encoding: [0x51,0x43] +@ CHECK: muls r2, r3, r2 @ encoding: [0x5a,0x43] @ CHECK: muls r3, r4, r3 @ encoding: [0x63,0x43] |
