diff options
Diffstat (limited to 'lib/CodeGen/TwoAddressInstructionPass.cpp')
| -rw-r--r-- | lib/CodeGen/TwoAddressInstructionPass.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp index f4cca259c9..60086ce224 100644 --- a/lib/CodeGen/TwoAddressInstructionPass.cpp +++ b/lib/CodeGen/TwoAddressInstructionPass.cpp @@ -554,7 +554,8 @@ TwoAddressInstructionPass::isProfitableToCommute(unsigned regB, unsigned regC, unsigned ToRegB = getMappedReg(regB, DstRegMap); unsigned ToRegC = getMappedReg(regC, DstRegMap); if (!regsAreCompatible(FromRegB, ToRegB, TRI) && - (regsAreCompatible(FromRegB, ToRegC, TRI) || + ((!FromRegC && !ToRegC) || + regsAreCompatible(FromRegB, ToRegC, TRI) || regsAreCompatible(FromRegC, ToRegB, TRI))) return true; |