[llvm] [DebugInfo] Simplify code with std::map::operator[] (NFC) (PR #115591)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/115591

None

>From 69f504c21c3b9bc48dfa1400e4de7c58ab22590e Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Fri, 8 Nov 2024 07:44:32 -0800
Subject: [PATCH] [DebugInfo] Simplify code with std::map::operator[] (NFC)

---
 llvm/include/llvm/DebugInfo/GSYM/OutputAggregator.h | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/llvm/include/llvm/DebugInfo/GSYM/OutputAggregator.h b/llvm/include/llvm/DebugInfo/GSYM/OutputAggregator.h
index 35ef0a8bc89085..ab20634b0b9384 100644
--- a/llvm/include/llvm/DebugInfo/GSYM/OutputAggregator.h
+++ b/llvm/include/llvm/DebugInfo/GSYM/OutputAggregator.h
@@ -60,11 +60,8 @@ class OutputAggregator {
   // then merge it in here. Note that this is *not* thread safe. It is up to
   // the caller to ensure that this is only called from one thread at a time.
   void Merge(const OutputAggregator &other) {
-    for (auto &&[name, count] : other.Aggregation) {
-      auto [it, inserted] = Aggregation.emplace(name, count);
-      if (!inserted)
-        it->second += count;
-    }
+    for (auto &&[name, count] : other.Aggregation)
+      Aggregation[name] += count;
   }
 };