[clang] [TableGen] Avoid repeated map lookups (NFC) (PR #108675)

[Kazu Hirata via cfe-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/108675

None

>From fa4c54d7fbe37e66b66ceceb124a9136460dd42c Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Fri, 13 Sep 2024 09:38:21 -0700
Subject: [PATCH] [TableGen] Avoid repeated map lookups (NFC)

---
 clang/utils/TableGen/NeonEmitter.cpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/clang/utils/TableGen/NeonEmitter.cpp b/clang/utils/TableGen/NeonEmitter.cpp
index 9e5480be20adac..82148f98d04fcc 100644
--- a/clang/utils/TableGen/NeonEmitter.cpp
+++ b/clang/utils/TableGen/NeonEmitter.cpp
@@ -2155,9 +2155,7 @@ void NeonEmitter::genOverloadTypeCheckCode(raw_ostream &OS,
     }
 
     if (Mask) {
-      std::string Name = Def->getMangledName();
-      OverloadMap.insert(std::make_pair(Name, OverloadInfo()));
-      OverloadInfo &OI = OverloadMap[Name];
+      OverloadInfo &OI = OverloadMap[Def->getMangledName()];
       OI.Mask |= Mask;
       OI.PtrArgNum |= PtrArgNum;
       OI.HasConstPtr = HasConstPtr;