[llvm] [Analysis] Avoid repeated hash lookups (NFC) (PR #127955)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/127955

None

>From 9c5f0dbda70f231eeffa7101b5cacc4d0f8421b5 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Wed, 19 Feb 2025 08:24:38 -0800
Subject: [PATCH] [Analysis] Avoid repeated hash lookups (NFC)

---
 llvm/lib/Analysis/LoopAccessAnalysis.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Analysis/LoopAccessAnalysis.cpp b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
index 5dc5b025599b1..a2bbe6fb11c09 100644
--- a/llvm/lib/Analysis/LoopAccessAnalysis.cpp
+++ b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
@@ -1431,8 +1431,8 @@ void AccessAnalysis::processMemAccesses() {
           typedef SmallVector<const Value *, 16> ValueVector;
           ValueVector TempObjects;
 
-          UnderlyingObjects[Ptr] = {};
           SmallVector<const Value *, 16> &UOs = UnderlyingObjects[Ptr];
+          UOs = {};
           ::getUnderlyingObjects(Ptr, UOs, LI);
           LLVM_DEBUG(dbgs()
                      << "Underlying objects for pointer " << *Ptr << "\n");