[llvm] 8bf13af - [ExecutionEngine] Avoid repeated hash lookups (NFC) (#130239)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-03-07T00:59:50-08:00
New Revision: 8bf13afd4a97ba2eefca0a7f44edea97ffee97fc

URL: https://github.com/llvm/llvm-project/commit/8bf13afd4a97ba2eefca0a7f44edea97ffee97fc
DIFF: https://github.com/llvm/llvm-project/commit/8bf13afd4a97ba2eefca0a7f44edea97ffee97fc.diff

LOG: [ExecutionEngine] Avoid repeated hash lookups (NFC) (#130239)

Added: 
    

Modified: 
    llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFAArch64.h
    llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFX86_64.h

Removed: 
    


################################################################################
diff  --git a/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFAArch64.h b/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFAArch64.h
index f54ed0eae0076..3ca6309874de5 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFAArch64.h
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFAArch64.h
@@ -121,13 +121,13 @@ class RuntimeDyldCOFFAArch64 : public RuntimeDyldCOFF {
     OriginalRelValueRef.Addend = Addend;
     OriginalRelValueRef.SymbolName = TargetName.data();
 
-    auto Stub = Stubs.find(OriginalRelValueRef);
-    if (Stub == Stubs.end()) {
+    auto [Stub, Inserted] = Stubs.try_emplace(OriginalRelValueRef);
+    if (Inserted) {
       LLVM_DEBUG(dbgs() << " Create a new stub function for "
                         << TargetName.data() << "\n");
 
       StubOffset = Section.getStubOffset();
-      Stubs[OriginalRelValueRef] = StubOffset;
+      Stub->second = StubOffset;
       createStubFunction(Section.getAddressWithOffset(StubOffset));
       Section.advanceStubOffset(getMaxStubSize());
     } else {

diff  --git a/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFX86_64.h b/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFX86_64.h
index 984a8d765c845..2a45535f68fa0 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFX86_64.h
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFX86_64.h
@@ -160,13 +160,13 @@ class RuntimeDyldCOFFX86_64 : public RuntimeDyldCOFF {
     OriginalRelValueRef.Addend = Addend;
     OriginalRelValueRef.SymbolName = TargetName.data();
 
-    auto Stub = Stubs.find(OriginalRelValueRef);
-    if (Stub == Stubs.end()) {
+    auto [Stub, Inserted] = Stubs.try_emplace(OriginalRelValueRef);
+    if (Inserted) {
       LLVM_DEBUG(dbgs() << " Create a new stub function for "
                         << TargetName.data() << "\n");
 
       StubOffset = Section.getStubOffset();
-      Stubs[OriginalRelValueRef] = StubOffset;
+      Stub->second = StubOffset;
       createStubFunction(Section.getAddressWithOffset(StubOffset));
       Section.advanceStubOffset(getMaxStubSize());
     } else {