[llvm] [Hexagon] Avoid repeated map lookups (NFC) (PR #127447)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/127447

None

>From 6aa1b9821ce838b009822e2a7bda4a5edfa4795e Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sun, 16 Feb 2025 08:29:45 -0800
Subject: [PATCH] [Hexagon] Avoid repeated map lookups (NFC)

---
 llvm/lib/Target/Hexagon/HexagonCommonGEP.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/Target/Hexagon/HexagonCommonGEP.cpp b/llvm/lib/Target/Hexagon/HexagonCommonGEP.cpp
index d95d4c0d20318..ea7a429056be9 100644
--- a/llvm/lib/Target/Hexagon/HexagonCommonGEP.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonCommonGEP.cpp
@@ -604,8 +604,10 @@ void HexagonCommonGEP::common() {
       uint32_t NF = N->Flags;
       // If N is used, append all original values of N to the list of
       // original values of Min.
-      if (NF & GepNode::Used)
-        MinUs.insert(Uses[N].begin(), Uses[N].end());
+      if (NF & GepNode::Used) {
+        auto &U = Uses[N];
+        MinUs.insert(U.begin(), U.end());
+      }
       Flags |= NF;
     }
     if (MinUs.empty())