[llvm] 92dfc0f - [llvm-jitlink] Avoid repeated hash lookups (NFC) (#129993)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-03-06T08:50:21-08:00
New Revision: 92dfc0ffc33414a14b3190e194c142cc99bbd61a

URL: https://github.com/llvm/llvm-project/commit/92dfc0ffc33414a14b3190e194c142cc99bbd61a
DIFF: https://github.com/llvm/llvm-project/commit/92dfc0ffc33414a14b3190e194c142cc99bbd61a.diff

LOG: [llvm-jitlink] Avoid repeated hash lookups (NFC) (#129993)

Added: 
    

Modified: 
    llvm/tools/llvm-jitlink/llvm-jitlink-elf.cpp

Removed: 
    


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diff  --git a/llvm/tools/llvm-jitlink/llvm-jitlink-elf.cpp b/llvm/tools/llvm-jitlink/llvm-jitlink-elf.cpp
index 6aa89413b7230..8bd17ebb6317a 100644
--- a/llvm/tools/llvm-jitlink/llvm-jitlink-elf.cpp
+++ b/llvm/tools/llvm-jitlink/llvm-jitlink-elf.cpp
@@ -104,14 +104,15 @@ Error registerELFGraphInfo(Session &S, LinkGraph &G) {
   std::lock_guard<std::mutex> Lock(S.M);
 
   auto FileName = sys::path::filename(G.getName());
-  if (S.FileInfos.count(FileName)) {
+  auto [It, Inserted] = S.FileInfos.try_emplace(FileName);
+  if (!Inserted) {
     return make_error<StringError>("When -check is passed, file names must be "
                                    "distinct (duplicate: \"" +
                                        FileName + "\")",
                                    inconvertibleErrorCode());
   }
 
-  auto &FileInfo = S.FileInfos[FileName];
+  auto &FileInfo = It->second;
   LLVM_DEBUG({
     dbgs() << "Registering ELF file info for \"" << FileName << "\"\n";
   });