[llvm] [RegisterCoalescer] Prune live range of early-clobber from live-in (PR #157628)

[Matt Arsenault via llvm-commits]

================
@@ -665,7 +665,10 @@ void LiveIntervals::extendToIndices(LiveRange &LR,
 void LiveIntervals::pruneValue(LiveRange &LR, SlotIndex Kill,
                                SmallVectorImpl<SlotIndex> *EndPoints) {
   LiveQueryResult LRQ = LR.Query(Kill);
-  VNInfo *VNI = LRQ.valueOutOrDead();
+  // LR may have liveness reachable from early clobber killer, which may be
----------------
arsenm wrote:

Killer?

https://github.com/llvm/llvm-project/pull/157628