[llvm] [CodeGen] Avoid repeated hash lookups (NFC) (PR #124506)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/124506

None

>From 120cba74919cfaf170ef6aa654bb9d3cade866a5 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sun, 26 Jan 2025 12:06:28 -0800
Subject: [PATCH] [CodeGen] Avoid repeated hash lookups (NFC)

---
 llvm/lib/CodeGen/PrologEpilogInserter.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/CodeGen/PrologEpilogInserter.cpp b/llvm/lib/CodeGen/PrologEpilogInserter.cpp
index 51e9a067707e28..eb8929cae069e6 100644
--- a/llvm/lib/CodeGen/PrologEpilogInserter.cpp
+++ b/llvm/lib/CodeGen/PrologEpilogInserter.cpp
@@ -208,8 +208,8 @@ static void stashEntryDbgValues(MachineBasicBlock &MBB,
   }
 
   // Remove stashed debug values from the block.
-  if (EntryDbgValues.count(&MBB))
-    for (auto *MI : EntryDbgValues[&MBB])
+  if (auto It = EntryDbgValues.find(&MBB); It != EntryDbgValues.end())
+    for (auto *MI : It->second)
       MI->removeFromParent();
 }