Terminate all dead defs at the dead slot instead of the 'next' slot.
This makes no difference for normal defs, but early clobber dead defs
now look like:
[Slot_EarlyClobber; Slot_Dead)
instead of:
[Slot_EarlyClobber; Slot_Register).
Live ranges for normal dead defs look like:
[Slot_Register; Slot_Dead)
as before.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144512 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 1346487..7baa5fb 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -686,7 +686,7 @@
VNInfo *VNI = *I;
if (VNI->isUnused())
continue;
- NewLI.addRange(LiveRange(VNI->def, VNI->def.getNextSlot(), VNI));
+ NewLI.addRange(LiveRange(VNI->def, VNI->def.getDeadSlot(), VNI));
// A use tied to an early-clobber def ends at the load slot and isn't caught
// above. Catch it here instead. This probably only ever happens for inline
@@ -751,7 +751,7 @@
continue;
LiveInterval::iterator LII = NewLI.FindLiveRangeContaining(VNI->def);
assert(LII != NewLI.end() && "Missing live range for PHI");
- if (LII->end != VNI->def.getNextSlot())
+ if (LII->end != VNI->def.getDeadSlot())
continue;
if (VNI->isPHIDef()) {
// This is a dead PHI. Remove it.