[llvm] [LV] Improve code in collectInstsToScalarize (NFC) (PR #130643)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-transforms

Author: Ramkumar Ramachandra (artagnon)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/130643.diff


1 Files Affected:

- (modified) llvm/lib/Transforms/Vectorize/LoopVectorize.cpp (+2-2) 


``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index b987863127994..6626d9cdb67ae 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -5427,12 +5427,12 @@ void LoopVectorizationCostModel::collectInstsToScalarize(ElementCount VF) {
           ScalarCostsVF.insert(ScalarCosts.begin(), ScalarCosts.end());
           // Check if we decided to scalarize a call. If so, update the widening
           // decision of the call to CM_Scalarize with the computed scalar cost.
-          for (const auto &[I, _] : ScalarCosts) {
+          for (const auto &[I, Cost] : ScalarCosts) {
             auto *CI = dyn_cast<CallInst>(I);
             if (!CI || !CallWideningDecisions.contains({CI, VF}))
               continue;
             CallWideningDecisions[{CI, VF}].Kind = CM_Scalarize;
-            CallWideningDecisions[{CI, VF}].Cost = ScalarCosts[CI];
+            CallWideningDecisions[{CI, VF}].Cost = Cost;
           }
         }
         // Remember that BB will remain after vectorization.

``````````

</details>


https://github.com/llvm/llvm-project/pull/130643