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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-07 00:32:25 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-07 00:32:25 +0000 |
| commit | f0e551d4f4b20fdc9295325774e05d53760a765a (patch) | |
| tree | 3972d240da8e354b6416f7f462546e83b6f5ffac /llvm/lib/CodeGen/LiveIntervalAnalysis.cpp | |
| parent | 5bc8a79e7f7e626ec01f8c50eda6110b293988e9 (diff) | |
| download | bcm5719-llvm-f0e551d4f4b20fdc9295325774e05d53760a765a.tar.gz bcm5719-llvm-f0e551d4f4b20fdc9295325774e05d53760a765a.zip | |
Revert "Remove references to INSERT_SUBREG after de-SSA" r107725.
Buildbot breakage.
llvm-svn: 107744
Diffstat (limited to 'llvm/lib/CodeGen/LiveIntervalAnalysis.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/LiveIntervalAnalysis.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp index 7c07c045dc3..a626fc03937 100644 --- a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -324,6 +324,12 @@ void LiveIntervals::handleVirtualRegisterDef(MachineBasicBlock *mbb, if (mi->isCopyLike() || tii_->isMoveInstr(*mi, SrcReg, DstReg, SrcSubReg, DstSubReg)) { CopyMI = mi; + + // Some of the REG_SEQUENCE lowering in TwoAddressInstrPass creates + // implicit defs without really knowing. It shows up as INSERT_SUBREG + // using an undefined register. + if (mi->isInsertSubreg()) + mi->getOperand(1).setIsUndef(); } VNInfo *ValNo = interval.getNextValue(defIndex, CopyMI, true, |
