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When deleting a machine instruction, make sure to remove it from the

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livevariables information.  This fixes several regalloc=local failures on x86


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30062 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2006-09-03 00:06:08 +00:00
parent 7a3abdc63c
commit 2ac0d43fa2
1 changed files with 4 additions and 1 deletions
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5
lib/CodeGen/RegAllocLocal.cpp
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@ -659,9 +659,12 @@ void RA::AllocateBasicBlock(MachineBasicBlock &MBB) {
// Finally, if this is a noop copy instruction, zap it. // Finally, if this is a noop copy instruction, zap it.
unsigned SrcReg, DstReg; unsigned SrcReg, DstReg;
if (TII.isMoveInstr(*MI, SrcReg, DstReg) && SrcReg == DstReg) if (TII.isMoveInstr(*MI, SrcReg, DstReg) && SrcReg == DstReg) {
LV->removeVirtualRegistersKilled(MI);
LV->removeVirtualRegistersDead(MI);
MBB.erase(MI); MBB.erase(MI);
} }
}
MachineBasicBlock::iterator MI = MBB.getFirstTerminator(); MachineBasicBlock::iterator MI = MBB.getFirstTerminator();