[RegAlloc][NFC] Use std::move to avoid copy (#134533)

Author: abhishek-kaushik22

llvm/include/llvm/CodeGen/RegAllocFast.h

@@ -22,10 +22,10 @@ class RegAllocFastPass : public PassInfoMixin<RegAllocFastPass> {
     bool ClearVRegs;
     Options(RegAllocFilterFunc F = nullptr, StringRef FN = "all",
             bool CV = true)
-        : Filter(F), FilterName(FN), ClearVRegs(CV) {}
+        : Filter(std::move(F)), FilterName(FN), ClearVRegs(CV) {}
   };
 
-  RegAllocFastPass(Options Opts = Options()) : Opts(Opts) {}
+  RegAllocFastPass(Options Opts = Options()) : Opts(std::move(Opts)) {}
 
   MachineFunctionProperties getRequiredProperties() const {
     return MachineFunctionProperties().set(

llvm/include/llvm/CodeGen/RegAllocGreedyPass.h

@@ -21,10 +21,10 @@ class RAGreedyPass : public PassInfoMixin<RAGreedyPass> {
     RegAllocFilterFunc Filter;
     StringRef FilterName;
     Options(RegAllocFilterFunc F = nullptr, StringRef FN = "all")
-        : Filter(F), FilterName(FN) {};
+        : Filter(std::move(F)), FilterName(FN) {};
   };
 
-  RAGreedyPass(Options Opts = Options()) : Opts(Opts) {}
+  RAGreedyPass(Options Opts = Options()) : Opts(std::move(Opts)) {}
   PreservedAnalyses run(MachineFunction &F, MachineFunctionAnalysisManager &AM);
 
   MachineFunctionProperties getRequiredProperties() const {

llvm/lib/CodeGen/RegAllocGreedy.cpp

@@ -179,7 +179,7 @@ class RAGreedyLegacy : public MachineFunctionPass {
 } // end anonymous namespace
 
 RAGreedyLegacy::RAGreedyLegacy(const RegAllocFilterFunc F)
-    : MachineFunctionPass(ID), F(F) {
+    : MachineFunctionPass(ID), F(std::move(F)) {
   initializeRAGreedyLegacyPass(*PassRegistry::getPassRegistry());
 }