[clang] [Sema] Avoid repeated hash lookups (NFC) (PR #122588)

[Kazu Hirata via cfe-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/122588

None

>From 7b2b5230116779c07db74056eba6618fdea7f910 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sat, 11 Jan 2025 01:11:22 -0800
Subject: [PATCH] [Sema] Avoid repeated hash lookups (NFC)

---
 clang/lib/Sema/SemaDecl.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 8724c20fd7b652..5b7275c316f74a 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -15868,8 +15868,8 @@ static void diagnoseImplicitlyRetainedSelf(Sema &S) {
   llvm::DenseMap<const BlockDecl *, bool> EscapeInfo;
 
   auto IsOrNestedInEscapingBlock = [&](const BlockDecl *BD) {
-    if (EscapeInfo.count(BD))
-      return EscapeInfo[BD];
+    if (auto It = EscapeInfo.find(BD); It != EscapeInfo.end())
+      return It->second;
 
     bool R = false;
     const BlockDecl *CurBD = BD;