[llvm] [Float2Int] Avoid repeated hash lookups (NFC) (PR #107795)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/107795

None

>From 3820515bce770bbcb2bc56cc73c1b93b6726f4c6 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sun, 8 Sep 2024 10:00:13 -0700
Subject: [PATCH] [Float2Int] Avoid repeated hash lookups (NFC)

---
 llvm/lib/Transforms/Scalar/Float2Int.cpp | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/llvm/lib/Transforms/Scalar/Float2Int.cpp b/llvm/lib/Transforms/Scalar/Float2Int.cpp
index a4a1438dbe41a8..98ecbe400543e1 100644
--- a/llvm/lib/Transforms/Scalar/Float2Int.cpp
+++ b/llvm/lib/Transforms/Scalar/Float2Int.cpp
@@ -115,11 +115,7 @@ void Float2IntPass::findRoots(Function &F, const DominatorTree &DT) {
 // Helper - mark I as having been traversed, having range R.
 void Float2IntPass::seen(Instruction *I, ConstantRange R) {
   LLVM_DEBUG(dbgs() << "F2I: " << *I << ":" << R << "\n");
-  auto IT = SeenInsts.find(I);
-  if (IT != SeenInsts.end())
-    IT->second = std::move(R);
-  else
-    SeenInsts.insert(std::make_pair(I, std::move(R)));
+  SeenInsts.insert_or_assign(I, std::move(R));
 }
 
 // Helper - get a range representing a poison value.