[llvm] [Hexagon] Avoid repeated map lookups (NFC) (PR #127304)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/127304

None

>From 6d188981e1f3d64eba33cee0fd42a77bd4527c30 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Fri, 14 Feb 2025 02:47:45 -0800
Subject: [PATCH] [Hexagon] Avoid repeated map lookups (NFC)

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

diff --git a/llvm/lib/Target/Hexagon/RDFCopy.cpp b/llvm/lib/Target/Hexagon/RDFCopy.cpp
index fdd7e4cf99e35..fafdad08909dd 100644
--- a/llvm/lib/Target/Hexagon/RDFCopy.cpp
+++ b/llvm/lib/Target/Hexagon/RDFCopy.cpp
@@ -133,8 +133,8 @@ bool CopyPropagation::run() {
     for (NodeId I : Copies) {
       dbgs() << "Instr: " << *DFG.addr<StmtNode*>(I).Addr->getCode();
       dbgs() << "   eq: {";
-      if (CopyMap.count(I)) {
-        for (auto J : CopyMap.at(I))
+      if (auto It = CopyMap.find(I); It != CopyMap.end()) {
+        for (auto J : It->second)
           dbgs() << ' ' << Print<RegisterRef>(J.first, DFG) << '='
                  << Print<RegisterRef>(J.second, DFG);
       }