[llvm] [Scalar] Avoid repeated hash lookups (NFC) (PR #128463)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-transforms

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/128463.diff


1 Files Affected:

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


``````````diff
diff --git a/llvm/lib/Transforms/Scalar/ConstantHoisting.cpp b/llvm/lib/Transforms/Scalar/ConstantHoisting.cpp
index a18defa9ff5cb..b775977073dbb 100644
--- a/llvm/lib/Transforms/Scalar/ConstantHoisting.cpp
+++ b/llvm/lib/Transforms/Scalar/ConstantHoisting.cpp
@@ -274,8 +274,7 @@ static void findBestInsertionSet(DominatorTree &DT, BlockFrequencyInfo &BFI,
   InsertPtsMap.reserve(Orders.size() + 1);
   for (BasicBlock *Node : llvm::reverse(Orders)) {
     bool NodeInBBs = BBs.count(Node);
-    auto &InsertPts = InsertPtsMap[Node].first;
-    BlockFrequency &InsertPtsFreq = InsertPtsMap[Node].second;
+    auto &[InsertPts, InsertPtsFreq] = InsertPtsMap[Node];
 
     // Return the optimal insert points in BBs.
     if (Node == Entry) {

``````````

</details>


https://github.com/llvm/llvm-project/pull/128463