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| author | Chris Lattner <sabre@nondot.org> | 2006-09-03 00:06:08 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2006-09-03 00:06:08 +0000 |
| commit | 2ac0d43fa2cbf2dd1b024a40685eb1b758ddac56 (patch) | |
| tree | a3bbc361728a03c2253b1adcc23f04bc65124c29 | |
| parent | 7a3abdc63c0cc4e5d5411c3add0e909c6ac49e79 (diff) | |
| download | external_llvm-2ac0d43fa2cbf2dd1b024a40685eb1b758ddac56.zip external_llvm-2ac0d43fa2cbf2dd1b024a40685eb1b758ddac56.tar.gz external_llvm-2ac0d43fa2cbf2dd1b024a40685eb1b758ddac56.tar.bz2 | |
When deleting a machine instruction, make sure to remove it from the
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
| -rw-r--r-- | lib/CodeGen/RegAllocLocal.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/CodeGen/RegAllocLocal.cpp b/lib/CodeGen/RegAllocLocal.cpp index dd8a881..c435c34 100644 --- a/lib/CodeGen/RegAllocLocal.cpp +++ b/lib/CodeGen/RegAllocLocal.cpp @@ -659,8 +659,11 @@ void RA::AllocateBasicBlock(MachineBasicBlock &MBB) { // Finally, if this is a noop copy instruction, zap it. 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); + } } MachineBasicBlock::iterator MI = MBB.getFirstTerminator(); |