[llvm] [SimplifyCFG] Fix hoisting problem in SimplifyCFG (PR #78615)

[via llvm-commits]

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@@ -1742,15 +1767,6 @@ bool SimplifyCFGOpt::hoistCommonCodeFromSuccessors(BasicBlock *BB,
       continue;
     }
 
-    SmallVector<Instruction *, 8> OtherInsts;
-    if (SameLevelHoist) { 
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RouzbehPaktinat wrote:

What is your idea @nikic ?
It's reasonable to make those changes but I assume it will take a bit time and won't be able to do it immediately (probably I will face with some corner cases and need to resolve them). This PR has been open for a long time and we have good results in terms of code size. What do you suggest?

https://github.com/llvm/llvm-project/pull/78615