6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-10 02:36:06 +00:00
Code Issues Projects Releases Wiki Activity

If the liveinterval of the source instruction has been extended, remove the IsKill marker.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34594 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-02-25 09:41:59 +00:00
parent bc025fbb64
commit 16191f0333
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
lib/CodeGen/LiveIntervalAnalysis.cpp
View File

@ -829,6 +829,12 @@ bool LiveIntervals::AdjustCopiesBackFrom(LiveInterval &IntA, LiveInterval &IntB,
DOUT << " result = "; IntB.print(DOUT, mri_);
DOUT << "\n";
// If the source instruction was killing the source register before the
// merge, unset the isKill marker given the live range has been extended.
MachineOperand *MOK = ValLREndInst->findRegisterUseOperand(IntB.reg, true);
if (MOK)
MOK->unsetIsKill();
// Finally, delete the copy instruction.
RemoveMachineInstrFromMaps(CopyMI);
CopyMI->eraseFromParent();