[llvm] [Analysis] Avoid repeated hash lookups (NFC) (PR #127574)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-analysis

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/127574.diff


1 Files Affected:

- (modified) llvm/lib/Analysis/InlineCost.cpp (+6-4) 


``````````diff
diff --git a/llvm/lib/Analysis/InlineCost.cpp b/llvm/lib/Analysis/InlineCost.cpp
index 8fa150f7d690e..c6b927c8eee2f 100644
--- a/llvm/lib/Analysis/InlineCost.cpp
+++ b/llvm/lib/Analysis/InlineCost.cpp
@@ -795,8 +795,9 @@ class InlineCostCallAnalyzer final : public CallAnalyzer {
     // the given instruction was assessed.
     if (!PrintInstructionComments)
       return;
-    InstructionCostDetailMap[I].CostBefore = Cost;
-    InstructionCostDetailMap[I].ThresholdBefore = Threshold;
+    auto &CostDetail = InstructionCostDetailMap[I];
+    CostDetail.CostBefore = Cost;
+    CostDetail.ThresholdBefore = Threshold;
   }
 
   void onInstructionAnalysisFinish(const Instruction *I) override {
@@ -804,8 +805,9 @@ class InlineCostCallAnalyzer final : public CallAnalyzer {
     // the instruction has been assessed.
     if (!PrintInstructionComments)
       return;
-    InstructionCostDetailMap[I].CostAfter = Cost;
-    InstructionCostDetailMap[I].ThresholdAfter = Threshold;
+    auto &CostDetail = InstructionCostDetailMap[I];
+    CostDetail.CostAfter = Cost;
+    CostDetail.ThresholdAfter = Threshold;
   }
 
   bool isCostBenefitAnalysisEnabled() {

``````````

</details>


https://github.com/llvm/llvm-project/pull/127574