[llvm] [NVPTX] Avoid repeated map lookups (NFC) (PR #111627)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/111627

None

>From 68e7a7d939f4d2802db024084d883a1867503bac Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Tue, 8 Oct 2024 20:47:32 -0700
Subject: [PATCH] [NVPTX] Avoid repeated map lookups (NFC)

---
 llvm/lib/Target/NVPTX/NVPTXAsmPrinter.cpp | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.cpp b/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.cpp
index 12f6161cbf61bc..7f4e1035e7a70a 100644
--- a/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.cpp
@@ -1145,13 +1145,7 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
   const Function *demotedFunc = nullptr;
   if (!processDemoted && canDemoteGlobalVar(GVar, demotedFunc)) {
     O << "// " << GVar->getName() << " has been demoted\n";
-    if (localDecls.find(demotedFunc) != localDecls.end())
-      localDecls[demotedFunc].push_back(GVar);
-    else {
-      std::vector<const GlobalVariable *> temp;
-      temp.push_back(GVar);
-      localDecls[demotedFunc] = temp;
-    }
+    localDecls[demotedFunc].push_back(GVar);
     return;
   }
 
@@ -1368,10 +1362,11 @@ void NVPTXAsmPrinter::AggBuffer::printWords(raw_ostream &os) {
 }
 
 void NVPTXAsmPrinter::emitDemotedVars(const Function *f, raw_ostream &O) {
-  if (localDecls.find(f) == localDecls.end())
+  auto It = localDecls.find(f);
+  if (It == localDecls.end())
     return;
 
-  std::vector<const GlobalVariable *> &gvars = localDecls[f];
+  std::vector<const GlobalVariable *> &gvars = It->second;
 
   const NVPTXTargetMachine &NTM = static_cast<const NVPTXTargetMachine &>(TM);
   const NVPTXSubtarget &STI =