[CodeGen][X86] Remove Expensive option copy and delete copy assignment (#85187)

Remove Expensive option copy and delete copy assignment

Author: mahesh-attarde

llvm/include/llvm/CodeGen/MachinePassManager.h

@@ -72,6 +72,7 @@ template <typename PassT> struct MachinePassModel : MachinePassConcept {
     return *this;
   }
 
+  MachinePassModel &operator=(const MachinePassModel &) = delete;
   PreservedAnalyses run(MachineFunction &IR,
                         MachineFunctionAnalysisManager &AM) override {
     return Pass.run(IR, AM);

llvm/include/llvm/Target/TargetMachine.h

@@ -455,7 +455,7 @@ class LLVMTargetMachine : public TargetMachine {
 
   virtual Error buildCodeGenPipeline(ModulePassManager &, raw_pwrite_stream &,
                                      raw_pwrite_stream *, CodeGenFileType,
-                                     CGPassBuilderOption,
+                                     const CGPassBuilderOption &,
                                      PassInstrumentationCallbacks *) {
     return make_error<StringError>("buildCodeGenPipeline is not overridden",
                                    inconvertibleErrorCode());

llvm/lib/Target/X86/X86CodeGenPassBuilder.cpp

@@ -48,7 +48,7 @@ Error X86CodeGenPassBuilder::addInstSelector(AddMachinePass &) const {
 
 Error X86TargetMachine::buildCodeGenPipeline(
     ModulePassManager &MPM, raw_pwrite_stream &Out, raw_pwrite_stream *DwoOut,
-    CodeGenFileType FileType, CGPassBuilderOption Opt,
+    CodeGenFileType FileType, const CGPassBuilderOption &Opt,
     PassInstrumentationCallbacks *PIC) {
   auto CGPB = X86CodeGenPassBuilder(*this, Opt, PIC);
   return CGPB.buildPipeline(MPM, Out, DwoOut, FileType);

llvm/lib/Target/X86/X86TargetMachine.h

@@ -60,7 +60,7 @@ class X86TargetMachine final : public LLVMTargetMachine {
 
   Error buildCodeGenPipeline(ModulePassManager &, raw_pwrite_stream &,
                              raw_pwrite_stream *, CodeGenFileType,
-                             CGPassBuilderOption,
+                             const CGPassBuilderOption &,
                              PassInstrumentationCallbacks *) override;
 
   bool isJIT() const { return IsJIT; }