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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 | 4b76ffc1ffca2ed016467e916d5223515b485592 (patch) | |
| tree | 79ffbfbecf7d39d3b8789af4953e194fe1c7963d /lib/CodeGen/LiveIntervalAnalysis.cpp | |
| parent | 78dfbc380d685c59b9321e43c10677a179850e29 (diff) | |
Revert "Remove references to INSERT_SUBREG after de-SSA" r107725.
Buildbot breakage.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107744 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 7c07c045dc..a626fc0393 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/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, |