[llvm] [DFAJumpThreading][NFC] Use const reference as range variable (PR #90342)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-transforms

Author: XChy (XChy)

<details>
<summary>Changes</summary>

Fixes #<!-- -->90286

---
Full diff: https://github.com/llvm/llvm-project/pull/90342.diff


1 Files Affected:

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


``````````diff
diff --git a/llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp b/llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp
index 14cdcc956aa5d7..fe5eeb1dcdf32f 100644
--- a/llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp
+++ b/llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp
@@ -553,7 +553,7 @@ struct AllSwitchPaths {
       return;
     }
 
-    for (PathType Path : LoopPaths) {
+    for (const PathType& Path : LoopPaths) {
       ThreadingPath TPath;
 
       const BasicBlock *PrevBB = Path.back();

``````````

</details>


https://github.com/llvm/llvm-project/pull/90342