[clang-tools-extra] [clang-tidy] Call StringMap::find without constructing std::string (NFC) (PR #115114)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-tidy

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>

StringMap::find takes StringRef, so we don't need to allocate
temporary instances of std::string.


---
Full diff: https://github.com/llvm/llvm-project/pull/115114.diff


1 Files Affected:

- (modified) clang-tools-extra/clang-tidy/abseil/DurationRewriter.cpp (+2-2) 


``````````diff
diff --git a/clang-tools-extra/clang-tidy/abseil/DurationRewriter.cpp b/clang-tools-extra/clang-tidy/abseil/DurationRewriter.cpp
index 3d807c1d0f7aa2..4cdbbd43c14311 100644
--- a/clang-tools-extra/clang-tidy/abseil/DurationRewriter.cpp
+++ b/clang-tools-extra/clang-tidy/abseil/DurationRewriter.cpp
@@ -244,7 +244,7 @@ std::optional<DurationScale> getScaleForDurationInverse(llvm::StringRef Name) {
        {"ToDoubleNanoseconds", DurationScale::Nanoseconds},
        {"ToInt64Nanoseconds", DurationScale::Nanoseconds}});
 
-  auto ScaleIter = ScaleMap.find(std::string(Name));
+  auto ScaleIter = ScaleMap.find(Name);
   if (ScaleIter == ScaleMap.end())
     return std::nullopt;
 
@@ -260,7 +260,7 @@ std::optional<DurationScale> getScaleForTimeInverse(llvm::StringRef Name) {
        {"ToUnixMicros", DurationScale::Microseconds},
        {"ToUnixNanos", DurationScale::Nanoseconds}});
 
-  auto ScaleIter = ScaleMap.find(std::string(Name));
+  auto ScaleIter = ScaleMap.find(Name);
   if (ScaleIter == ScaleMap.end())
     return std::nullopt;
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/115114