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

[Quentin Dian 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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DianQK wrote:

Why did you remove `SameLevelHoist`?
I think it makes sense. You can build the hash map when you can't hoist at the same level. This can reduce the size of it.

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