diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2007-02-25 09:41:59 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2007-02-25 09:41:59 +0000 |
| commit | 16191f03337645dc1638b7489d71d685e6c07cdd (patch) | |
| tree | a8c83e72ed905ecdbd0e9bb9cda9e8e478ca443d /lib/CodeGen/LiveIntervalAnalysis.cpp | |
| parent | bc025fbb64038b9f2c6615dd2d090c1c2ba0a91c (diff) | |
| download | llvm-16191f03337645dc1638b7489d71d685e6c07cdd.tar.gz llvm-16191f03337645dc1638b7489d71d685e6c07cdd.tar.bz2 llvm-16191f03337645dc1638b7489d71d685e6c07cdd.tar.xz | |
If the liveinterval of the source instruction has been extended, remove the IsKill marker.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34594 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveIntervalAnalysis.cpp')
| -rw-r--r-- | lib/CodeGen/LiveIntervalAnalysis.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index ce2e4290b1..5e17a734a2 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -828,6 +828,12 @@ bool LiveIntervals::AdjustCopiesBackFrom(LiveInterval &IntA, LiveInterval &IntB, IntB.MergeValueNumberInto(BValNo, ValLR->ValId); 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); |