[clang] 2fee5ef - [ByteCode] Avoid repeated hash lookups (NFC) (#126379)

[via cfe-commits]

Author: Kazu Hirata
Date: 2025-02-08T11:35:45-08:00
New Revision: 2fee5ef2356b514dda30e89f39125a390c0d928e

URL: https://github.com/llvm/llvm-project/commit/2fee5ef2356b514dda30e89f39125a390c0d928e
DIFF: https://github.com/llvm/llvm-project/commit/2fee5ef2356b514dda30e89f39125a390c0d928e.diff

LOG: [ByteCode] Avoid repeated hash lookups (NFC) (#126379)

Added: 
    

Modified: 
    clang/lib/AST/ByteCode/Program.cpp

Removed: 
    


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diff  --git a/clang/lib/AST/ByteCode/Program.cpp b/clang/lib/AST/ByteCode/Program.cpp
index e0b86d46428a26..833c9ef88d770f 100644
--- a/clang/lib/AST/ByteCode/Program.cpp
+++ b/clang/lib/AST/ByteCode/Program.cpp
@@ -18,14 +18,12 @@ using namespace clang;
 using namespace clang::interp;
 
 unsigned Program::getOrCreateNativePointer(const void *Ptr) {
-  auto It = NativePointerIndices.find(Ptr);
-  if (It != NativePointerIndices.end())
-    return It->second;
+  auto [It, Inserted] =
+      NativePointerIndices.try_emplace(Ptr, NativePointers.size());
+  if (Inserted)
+    NativePointers.push_back(Ptr);
 
-  unsigned Idx = NativePointers.size();
-  NativePointers.push_back(Ptr);
-  NativePointerIndices[Ptr] = Idx;
-  return Idx;
+  return It->second;
 }
 
 const void *Program::getNativePointer(unsigned Idx) {