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Fix problem fusing spill code into instructions: we didn't update the live 

variable information to take into account the change of instruction
address.

llvm-svn: 11628
This commit is contained in:
Chris Lattner 2004-02-19 18:34:02 +00:00
parent 4c988391e1
commit f5c5e1f458
1 changed files with 3 additions and 0 deletions
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3
llvm/lib/CodeGen/RegAllocLocal.cpp
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@ -496,6 +496,9 @@ MachineInstr *RA::reloadVirtReg(MachineBasicBlock &MBB, MachineInstr *MI,
MachineBasicBlock::iterator MII = MI; MachineBasicBlock::iterator MII = MI;
if (RegInfo->foldMemoryOperand(MII, OpNum, FrameIndex)) { if (RegInfo->foldMemoryOperand(MII, OpNum, FrameIndex)) {
++NumFused; ++NumFused;
// Since we changed the address of MI, make sure to update live variables
// to know that the new instruction has the properties of the old one.
LV->instructionChanged(MI, MII);
return MII; return MII;
} }