diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/TwoAddressInstructionPass.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp index 737d01eaa17..43d87664696 100644 --- a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp +++ b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp @@ -1244,8 +1244,13 @@ bool TwoAddressInstructionPass::tryInstructionCommute(MachineInstr *MI, ++NumAggrCommuted; // There might be more than two commutable operands, update BaseOp and // continue scanning. + // FIXME: This assumes that the new instruction's operands are in the + // same positions and were simply swapped. BaseOpReg = OtherOpReg; BaseOpKilled = OtherOpKilled; + // Resamples OpsNum in case the number of operands was reduced. This + // happens with X86. + OpsNum = MI->getDesc().getNumOperands(); continue; } // If this was a commute based on kill, we won't do better continuing. |
