[llvm] [BOLT] Avoid repeated hash lookups (NFC) (PR #112822)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/112822

None

>From 42494e2e4e6c8028d312b49075e33ade14fadd71 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Thu, 17 Oct 2024 07:52:00 -0700
Subject: [PATCH] [BOLT] Avoid repeated hash lookups (NFC)

---
 bolt/lib/Passes/VeneerElimination.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/bolt/lib/Passes/VeneerElimination.cpp b/bolt/lib/Passes/VeneerElimination.cpp
index 87fe625e8c3b3e..8bf0359477c658 100644
--- a/bolt/lib/Passes/VeneerElimination.cpp
+++ b/bolt/lib/Passes/VeneerElimination.cpp
@@ -73,12 +73,12 @@ Error VeneerElimination::runOnFunctions(BinaryContext &BC) {
           continue;
 
         const MCSymbol *TargetSymbol = BC.MIB->getTargetSymbol(Instr, 0);
-        if (VeneerDestinations.find(TargetSymbol) == VeneerDestinations.end())
+        auto It = VeneerDestinations.find(TargetSymbol);
+        if (It == VeneerDestinations.end())
           continue;
 
         VeneerCallers++;
-        BC.MIB->replaceBranchTarget(Instr, VeneerDestinations[TargetSymbol],
-                                    BC.Ctx.get());
+        BC.MIB->replaceBranchTarget(Instr, It->second, BC.Ctx.get());
       }
     }
   }