diff options
Diffstat (limited to 'lib/CodeGen/TwoAddressInstructionPass.cpp')
| -rw-r--r-- | lib/CodeGen/TwoAddressInstructionPass.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp index 277257bd61..b8d38dc229 100644 --- a/lib/CodeGen/TwoAddressInstructionPass.cpp +++ b/lib/CodeGen/TwoAddressInstructionPass.cpp @@ -202,6 +202,10 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) { LiveVariables::VarInfo& varInfo = LV.getVarInfo(regA); varInfo.DefInst = prevMi; + // update live variables for regB + LiveVariables::VarInfo& varInfoB = LV.getVarInfo(regB); + // regB is used in this BB. + varInfoB.UsedBlocks[mbbi->getNumber()] = true; if (LV.removeVirtualRegisterKilled(regB, mbbi, mi)) LV.addVirtualRegisterKilled(regB, prevMi); |