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-rw-r--r--lib/CodeGen/LiveIntervalAnalysis.cpp6
1 files changed, 0 insertions, 6 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index a626fc0393..7c07c045dc 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -324,12 +324,6 @@ 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,