[clang] [clang-offload-packager] Avoid repeated hash lookups (NFC) (PR #127302)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/127302.diff


1 Files Affected:

- (modified) clang/tools/clang-offload-packager/ClangOffloadPackager.cpp (+3-4) 


``````````diff
diff --git a/clang/tools/clang-offload-packager/ClangOffloadPackager.cpp b/clang/tools/clang-offload-packager/ClangOffloadPackager.cpp
index c6d5b31ab512c..49cb0d70f492b 100644
--- a/clang/tools/clang-offload-packager/ClangOffloadPackager.cpp
+++ b/clang/tools/clang-offload-packager/ClangOffloadPackager.cpp
@@ -70,10 +70,9 @@ static DenseMap<StringRef, StringRef> getImageArguments(StringRef Image,
   DenseMap<StringRef, StringRef> Args;
   for (StringRef Arg : llvm::split(Image, ",")) {
     auto [Key, Value] = Arg.split("=");
-    if (Args.count(Key))
-      Args[Key] = Saver.save(Args[Key] + "," + Value);
-    else
-      Args[Key] = Value;
+    auto [It, Inserted] = Args.try_emplace(Key, Value);
+    if (!Inserted)
+      It->second = Saver.save(It->second + "," + Value);
   }
 
   return Args;

``````````

</details>


https://github.com/llvm/llvm-project/pull/127302