[llvm] [ExecutionEngine] Avoid repeated map lookups (NFC) (PR #131552)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/131552

None

>From 2fe88866100f73016509d97d3f71e967ccb74118 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sun, 16 Mar 2025 09:38:15 -0700
Subject: [PATCH] [ExecutionEngine] Avoid repeated map lookups (NFC)

---
 .../RuntimeDyld/Targets/RuntimeDyldMachOAArch64.h         | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOAArch64.h b/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOAArch64.h
index 701cc3a881496..222928e1a2d20 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOAArch64.h
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOAArch64.h
@@ -445,10 +445,10 @@ class RuntimeDyldMachOAArch64
             (RE.Size == 2 || RE.Size == 3)) ||
            RE.Size == 2);
     SectionEntry &Section = Sections[RE.SectionID];
-    StubMap::const_iterator i = Stubs.find(Value);
+    auto [It, Inserted] = Stubs.try_emplace(Value);
     int64_t Offset;
-    if (i != Stubs.end())
-      Offset = static_cast<int64_t>(i->second);
+    if (!Inserted)
+      Offset = static_cast<int64_t>(It->second);
     else {
       // FIXME: There must be a better way to do this then to check and fix the
       // alignment every time!!!
@@ -458,7 +458,7 @@ class RuntimeDyldMachOAArch64
           (BaseAddress + Section.getStubOffset() + StubAlignment - 1) &
           -StubAlignment;
       unsigned StubOffset = StubAddress - BaseAddress;
-      Stubs[Value] = StubOffset;
+      It->second = StubOffset;
       assert(isAligned(getStubAlignment(), StubAddress) &&
              "GOT entry not aligned");
       RelocationEntry GOTRE(RE.SectionID, StubOffset,