[llvm] [Transforms] Avoid repeated hash lookups (NFC) (PR #110400)

[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/110400.diff


1 Files Affected:

- (modified) llvm/include/llvm/Transforms/Utils/SampleProfileInference.h (+3-2) 


``````````diff
diff --git a/llvm/include/llvm/Transforms/Utils/SampleProfileInference.h b/llvm/include/llvm/Transforms/Utils/SampleProfileInference.h
index b4ea1ad840f9d9..7231e45fe8eb72 100644
--- a/llvm/include/llvm/Transforms/Utils/SampleProfileInference.h
+++ b/llvm/include/llvm/Transforms/Utils/SampleProfileInference.h
@@ -247,9 +247,10 @@ FlowFunction SampleProfileInference<BT>::createFlowFunction(
   // Create FlowBlocks
   for (const auto *BB : BasicBlocks) {
     FlowBlock Block;
-    if (SampleBlockWeights.contains(BB)) {
+    auto It = SampleBlockWeights.find(BB);
+    if (It != SampleBlockWeights.end()) {
       Block.HasUnknownWeight = false;
-      Block.Weight = SampleBlockWeights[BB];
+      Block.Weight = It->second;
     } else {
       Block.HasUnknownWeight = true;
       Block.Weight = 0;

``````````

</details>


https://github.com/llvm/llvm-project/pull/110400