[llvm] [ProfileData] Avoid repeated hash lookups (NFC) (PR #129194)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-pgo

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/129194.diff


1 Files Affected:

- (modified) llvm/lib/ProfileData/InstrProfWriter.cpp (+3-2) 


``````````diff
diff --git a/llvm/lib/ProfileData/InstrProfWriter.cpp b/llvm/lib/ProfileData/InstrProfWriter.cpp
index f112ea2efcaa9..18aa76c865bc8 100644
--- a/llvm/lib/ProfileData/InstrProfWriter.cpp
+++ b/llvm/lib/ProfileData/InstrProfWriter.cpp
@@ -230,7 +230,8 @@ void InstrProfWriter::overlapRecord(NamedInstrProfRecord &&Other,
   auto Name = Other.Name;
   auto Hash = Other.Hash;
   Other.accumulateCounts(FuncLevelOverlap.Test);
-  if (!FunctionData.contains(Name)) {
+  auto It = FunctionData.find(Name);
+  if (It == FunctionData.end()) {
     Overlap.addOneUnique(FuncLevelOverlap.Test);
     return;
   }
@@ -238,7 +239,7 @@ void InstrProfWriter::overlapRecord(NamedInstrProfRecord &&Other,
     Overlap.Overlap.NumEntries += 1;
     return;
   }
-  auto &ProfileDataMap = FunctionData[Name];
+  auto &ProfileDataMap = It->second;
   bool NewFunc;
   ProfilingData::iterator Where;
   std::tie(Where, NewFunc) =

``````````

</details>


https://github.com/llvm/llvm-project/pull/129194