From 9e62b779cc9114fcb4e8bc48c6090c6e90eeb2e3 Mon Sep 17 00:00:00 2001
From: serge-sans-paille <sguelton@mozilla.com>
Date: Tue, 27 Jan 2026 20:46:47 +0000
Subject: [PATCH] [perf] Replace copy-assign by move-assign in llvm/lib/IR/*
 (#178175)

---
 llvm/lib/IR/AsmWriter.cpp         | 8 ++++----
 llvm/lib/IR/ConstantRangeList.cpp | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/llvm/lib/IR/AsmWriter.cpp b/llvm/lib/IR/AsmWriter.cpp
index 82e4de6d0744..b3e0323fd863 100644
--- a/llvm/lib/IR/AsmWriter.cpp
+++ b/llvm/lib/IR/AsmWriter.cpp
@@ -1010,13 +1010,13 @@ int ModuleSlotTracker::getLocalSlot(const Value *V) {
 void ModuleSlotTracker::setProcessHook(
     std::function<void(AbstractSlotTrackerStorage *, const Module *, bool)>
         Fn) {
-  ProcessModuleHookFn = Fn;
+  ProcessModuleHookFn = std::move(Fn);
 }
 
 void ModuleSlotTracker::setProcessHook(
     std::function<void(AbstractSlotTrackerStorage *, const Function *, bool)>
         Fn) {
-  ProcessFunctionHookFn = Fn;
+  ProcessFunctionHookFn = std::move(Fn);
 }
 
 static SlotTracker *createSlotTracker(const Value *V) {
@@ -1304,13 +1304,13 @@ int SlotTracker::getGlobalSlot(const GlobalValue *V) {
 void SlotTracker::setProcessHook(
     std::function<void(AbstractSlotTrackerStorage *, const Module *, bool)>
         Fn) {
-  ProcessModuleHookFn = Fn;
+  ProcessModuleHookFn = std::move(Fn);
 }
 
 void SlotTracker::setProcessHook(
     std::function<void(AbstractSlotTrackerStorage *, const Function *, bool)>
         Fn) {
-  ProcessFunctionHookFn = Fn;
+  ProcessFunctionHookFn = std::move(Fn);
 }
 
 /// getMetadataSlot - Get the slot number of a MDNode.
diff --git a/llvm/lib/IR/ConstantRangeList.cpp b/llvm/lib/IR/ConstantRangeList.cpp
index 3ee8d6f22b74..d41efe9dbae2 100644
--- a/llvm/lib/IR/ConstantRangeList.cpp
+++ b/llvm/lib/IR/ConstantRangeList.cpp
@@ -139,7 +139,7 @@ void ConstantRangeList::subtract(const ConstantRange &SubRange) {
     }
   }
 
-  Ranges = Result;
+  Ranges = std::move(Result);
 }
 
 ConstantRangeList