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Keep UsedBlocks info accurate.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35140 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-03-18 09:02:31 +00:00
parent 7e79e396a4
commit e951cd1647
2 changed files with 6 additions and 0 deletions
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3
lib/CodeGen/PHIElimination.cpp
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@ -160,6 +160,8 @@ void PNE::LowerAtomicPHINode(MachineBasicBlock &MBB,
// Realize that the destination register is defined by the PHI copy now, not // Realize that the destination register is defined by the PHI copy now, not
// the PHI itself. // the PHI itself.
LV->getVarInfo(DestReg).DefInst = PHICopy; LV->getVarInfo(DestReg).DefInst = PHICopy;
LV->getVarInfo(IncomingReg).UsedBlocks[MBB.getNumber()] = true;
} }
// Adjust the VRegPHIUseCount map to account for the removal of this PHI // Adjust the VRegPHIUseCount map to account for the removal of this PHI
@ -210,6 +212,7 @@ void PNE::LowerAtomicPHINode(MachineBasicBlock &MBB,
// instruction kills the incoming value. // instruction kills the incoming value.
// //
LiveVariables::VarInfo &InRegVI = LV->getVarInfo(SrcReg); LiveVariables::VarInfo &InRegVI = LV->getVarInfo(SrcReg);
InRegVI.UsedBlocks[opBlock.getNumber()] = true;
// Loop over all of the successors of the basic block, checking to see // Loop over all of the successors of the basic block, checking to see
// if the value is either live in the block, or if it is killed in the // if the value is either live in the block, or if it is killed in the

3
lib/CodeGen/TwoAddressInstructionPass.cpp
View File

@ -198,6 +198,9 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) {
varInfo.DefInst = prevMi; varInfo.DefInst = prevMi;
// update live variables for regB // 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)) if (LV.removeVirtualRegisterKilled(regB, mbbi, mi))
LV.addVirtualRegisterKilled(regB, prevMi); LV.addVirtualRegisterKilled(regB, prevMi);