[llvm] 178fb96 - [ExecutionEngine] Avoid repeated hash lookups (NFC) (#129466)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-03-03T01:02:57-08:00
New Revision: 178fb96f72b95b9df87227832b3dd495d9b9f91c

URL: https://github.com/llvm/llvm-project/commit/178fb96f72b95b9df87227832b3dd495d9b9f91c
DIFF: https://github.com/llvm/llvm-project/commit/178fb96f72b95b9df87227832b3dd495d9b9f91c.diff

LOG: [ExecutionEngine] Avoid repeated hash lookups (NFC) (#129466)

Added: 
    

Modified: 
    llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp

Removed: 
    


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diff  --git a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
index 0fc05a47648c1..06fc2eb32f3bd 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
@@ -682,17 +682,17 @@ void RuntimeDyldELF::resolveLoongArch64Branch(unsigned SectionID,
   uint64_t Offset = RelI->getOffset();
   unsigned RelType = RelI->getType();
   // Look for an existing stub.
-  StubMap::const_iterator i = Stubs.find(Value);
-  if (i != Stubs.end()) {
+  auto [It, Inserted] = Stubs.try_emplace(Value);
+  if (!Inserted) {
     resolveRelocation(Section, Offset,
-                      (uint64_t)Section.getAddressWithOffset(i->second),
+                      (uint64_t)Section.getAddressWithOffset(It->second),
                       RelType, 0);
     LLVM_DEBUG(dbgs() << " Stub function found\n");
     return;
   }
   // Create a new stub function.
   LLVM_DEBUG(dbgs() << " Create a new stub function\n");
-  Stubs[Value] = Section.getStubOffset();
+  It->second = Section.getStubOffset();
   uint8_t *StubTargetAddr =
       createStubFunction(Section.getAddressWithOffset(Section.getStubOffset()));
   RelocationEntry LU12I_W(SectionID, StubTargetAddr - Section.getAddress(),