[llvm] [Transform] Remove redundant condition (PR #107893)

via llvm-commits llvm-commits at lists.llvm.org
Mon Sep 9 10:27:54 PDT 2024


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-transforms

Author: Amr Hesham (AmrDeveloper)

<details>
<summary>Changes</summary>

Remove redundant condition from  '!A || (A && B)' to '!A || B' 

Fixes: #<!-- -->99799 

---
Full diff: https://github.com/llvm/llvm-project/pull/107893.diff


1 Files Affected:

- (modified) llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp (+1-2) 


``````````diff
diff --git a/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp b/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
index c235d2fb2a5bd4..7d87df1805d1ea 100644
--- a/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
+++ b/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
@@ -770,8 +770,7 @@ static bool unswitchTrivialSwitch(Loop &L, SwitchInst &SI, DominatorTree &DT,
     // instruction in the block.
     auto *TI = BBToCheck.getTerminator();
     bool isUnreachable = isa<UnreachableInst>(TI);
-    return !isUnreachable ||
-           (isUnreachable && (BBToCheck.getFirstNonPHIOrDbg() != TI));
+    return !isUnreachable || (BBToCheck.getFirstNonPHIOrDbg() != TI);
   };
 
   SmallVector<int, 4> ExitCaseIndices;

``````````

</details>


https://github.com/llvm/llvm-project/pull/107893


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