[llvm] [SandboxVec][BottomUpVec] Clean up dead instructions (PR #115267)

[via llvm-commits]

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@@ -153,6 +153,20 @@ Value *BottomUpVec::createVectorInstr(ArrayRef<Value *> Bndl,
   // TODO: Propagate debug info.
 }
 
+void BottomUpVec::tryEraseDeadInstrs() {
+  bool Change = true;
+  while (Change) {
+    Change = false;
+    for (Instruction *I : make_early_inc_range(DeadInstrCandidates)) {
+      if (I->hasNUses(0)) {
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vporpo wrote:

I changed this to a single loop. I am sorting DeadInstrCandidates right before walking through it.

https://github.com/llvm/llvm-project/pull/115267