If a split live interval is spilled again, remove the kill marker on its last use.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44611 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index b237247..b321b3f 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -1165,6 +1165,7 @@
// it's also guaranteed to be a single val# / range interval.
if (vrm.getPreSplitReg(li.reg)) {
vrm.setIsSplitFromReg(li.reg, 0);
+ vrm.removeKillPoint(li.reg);
bool DefIsReMat = vrm.isReMaterialized(li.reg);
Slot = vrm.getStackSlot(li.reg);
assert(Slot != VirtRegMap::MAX_STACK_SLOT);
@@ -1398,8 +1399,10 @@
int UseIdx = LastUse->findRegisterUseOperandIdx(LI->reg);
assert(UseIdx != -1);
if (LastUse->getInstrDescriptor()->
- getOperandConstraint(UseIdx, TOI::TIED_TO) == -1)
+ getOperandConstraint(UseIdx, TOI::TIED_TO) == -1) {
LastUse->getOperand(UseIdx).setIsKill();
+ vrm.addKillPoint(LI->reg, &LastUse->getOperand(UseIdx));
+ }
}
RetNewLIs.push_back(LI);
}