[llvm] [IPO] Avoid repeated hash lookups (NFC) (PR #132588)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/132588

None

>From 7f0bcd62d89427896fdb06c928cf18492f0d61bc Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sat, 22 Mar 2025 08:50:04 -0700
Subject: [PATCH] [IPO] Avoid repeated hash lookups (NFC)

---
 llvm/lib/Transforms/IPO/SampleProfile.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Transforms/IPO/SampleProfile.cpp b/llvm/lib/Transforms/IPO/SampleProfile.cpp
index 731ee7edb48c8..a998f1a1b99a2 100644
--- a/llvm/lib/Transforms/IPO/SampleProfile.cpp
+++ b/llvm/lib/Transforms/IPO/SampleProfile.cpp
@@ -629,7 +629,8 @@ inline void SampleProfileInference<Function>::findUnlikelyJumps(
     const Instruction *TI = BB->getTerminator();
     // Check if a block ends with InvokeInst and mark non-taken branch unlikely.
     // In that case block Succ should be a landing pad
-    if (Successors[BB].size() == 2 && Successors[BB].back() == Succ) {
+    const auto &Succs = Successors[BB];
+    if (Succs.size() == 2 && Succs.back() == Succ) {
       if (isa<InvokeInst>(TI)) {
         Jump.IsUnlikely = true;
       }