[llvm] [AsmPrinter] Avoid repeated map lookups (NFC) (PR #126431)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/126431

None

>From 7a015995e599432430472fe542a7eb614bc86b53 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sun, 9 Feb 2025 09:12:10 -0800
Subject: [PATCH] [AsmPrinter] Avoid repeated map lookups (NFC)

---
 llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp b/llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp
index 55a0afcf7a33f16..c9efec37b0bc679 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp
@@ -414,9 +414,10 @@ static void handleNewDebugValue(InlinedEntity Var, const MachineInstr &DV,
         dropRegDescribedVar(RegVars, I.first, Var);
 
     // Drop all entries that have ended, and mark the new entry as live.
+    auto &Entries = LiveEntries[Var];
     for (auto Index : IndicesToErase)
-      LiveEntries[Var].erase(Index);
-    LiveEntries[Var].insert(NewIndex);
+      Entries.erase(Index);
+    Entries.insert(NewIndex);
   }
 }