[llvm] [GVN] Improve processBlock for instruction erasure (PR #131753)

[Nikita Popov via llvm-commits]

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@@ -877,6 +876,12 @@ void GVNPass::printPipeline(
   OS << '>';
 }
 
+void GVNPass::doInstructionDeletion(Instruction *I) {
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nikic wrote:

>From the name, it's not really obvious what the difference between removeInstruction and doInstructionDeletion is. Maybe call this salvageAndRemoveInstruction?

https://github.com/llvm/llvm-project/pull/131753