[llvm] [Support] Avoid repeated hash lookups (NFC) (PR #127747)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/127747

None

>From 17e907ea2edf365ee1e596a9a101dc694762258c Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Tue, 18 Feb 2025 08:43:30 -0800
Subject: [PATCH] [Support] Avoid repeated hash lookups (NFC)

---
 llvm/include/llvm/Support/DebugCounter.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/llvm/include/llvm/Support/DebugCounter.h b/llvm/include/llvm/Support/DebugCounter.h
index e4345e5739e99..8e9dc29e4f48a 100644
--- a/llvm/include/llvm/Support/DebugCounter.h
+++ b/llvm/include/llvm/Support/DebugCounter.h
@@ -162,8 +162,9 @@ class DebugCounter {
 protected:
   unsigned addCounter(const std::string &Name, const std::string &Desc) {
     unsigned Result = RegisteredCounters.insert(Name);
-    Counters[Result] = {};
-    Counters[Result].Desc = Desc;
+    auto &C = Counters[Result];
+    C = {};
+    C.Desc = Desc;
     return Result;
   }
   // Struct to store counter info.