[llvm] [SimplifyCfg] Deduplicate code (NFC) (PR #153965)

[Andreas Jonson via llvm-commits]

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@@ -1452,7 +1452,10 @@ bool SimplifyCFGOpt::foldValueComparisonIntoPredecessors(Instruction *TI,
       }
     }
 
-    performValueComparisonIntoPredecessorFolding(TI, CV, PTI, Builder);
+    // Needs to be called here as SplitBlockPredecessors can change the cases.
+    EqualityComparisonResult ThisResult = isValueEqualityComparison(TI);
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andjo403 wrote:

when I hade missed this re evaluation the code was faulty so not sure that this PR made this code less fragile

https://github.com/llvm/llvm-project/pull/153965