; RUN: opt < %s -passes='cgscc(devirt<4>(inline)),function(sroa,early-cse)' -S | FileCheck %s ; RUN: opt < %s -passes='default' -S | FileCheck %s ; Check that DoNotOptimize is inlined into Test. ; CHECK: @_Z4Testv() ; CHECK-NOT: ret void ; CHECK: call void asm ; CHECK: ret void ;template ;void DoNotOptimize(const T& var) { ; asm volatile("" : "+m"(const_cast(var))); ;} ; ;class Interface { ; public: ; virtual void Run() = 0; ;}; ; ;class Impl : public Interface { ; public: ; Impl() : f(3) {} ; void Run() { DoNotOptimize(this); } ; ; private: ; int f; ;}; ; ;static void IndirectRun(Interface& o) { o.Run(); } ; ;void Test() { ; Impl o; ; IndirectRun(o); ;} %class.Impl = type <{ %class.Interface, i32, [4 x i8] }> %class.Interface = type { ptr } @_ZTV4Impl = linkonce_odr dso_local unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTI4Impl, ptr @_ZN4Impl3RunEv] }, align 8 @_ZTVN10__cxxabiv120__si_class_type_infoE = external dso_local global ptr @_ZTS4Impl = linkonce_odr dso_local constant [6 x i8] c"4Impl\00", align 1 @_ZTVN10__cxxabiv117__class_type_infoE = external dso_local global ptr @_ZTS9Interface = linkonce_odr dso_local constant [11 x i8] c"9Interface\00", align 1 @_ZTI9Interface = linkonce_odr dso_local constant { ptr, ptr } { ptr getelementptr inbounds (ptr, ptr @_ZTVN10__cxxabiv117__class_type_infoE, i64 2), ptr @_ZTS9Interface }, align 8 @_ZTI4Impl = linkonce_odr dso_local constant { ptr, ptr, ptr } { ptr getelementptr inbounds (ptr, ptr @_ZTVN10__cxxabiv120__si_class_type_infoE, i64 2), ptr @_ZTS4Impl, ptr @_ZTI9Interface }, align 8 @_ZTV9Interface = linkonce_odr dso_local unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTI9Interface, ptr @__cxa_pure_virtual] }, align 8 define dso_local void @_Z4Testv() local_unnamed_addr { entry: %o = alloca %class.Impl, align 8 call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %o) call void @_ZN4ImplC2Ev(ptr nonnull %o) call fastcc void @_ZL11IndirectRunR9Interface(ptr nonnull dereferenceable(8) %o) call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %o) ret void } declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) define linkonce_odr dso_local void @_ZN4ImplC2Ev(ptr %this) unnamed_addr align 2 { entry: call void @_ZN9InterfaceC2Ev(ptr %this) store ptr getelementptr inbounds ({ [3 x ptr] }, ptr @_ZTV4Impl, i64 0, inrange i32 0, i64 2), ptr %this, align 8 %f = getelementptr inbounds %class.Impl, ptr %this, i64 0, i32 1 store i32 3, ptr %f, align 8 ret void } define internal fastcc void @_ZL11IndirectRunR9Interface(ptr dereferenceable(8) %o) unnamed_addr { entry: %vtable = load ptr, ptr %o, align 8 %0 = load ptr, ptr %vtable, align 8 call void %0(ptr nonnull %o) ret void } declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) define linkonce_odr dso_local void @_ZN9InterfaceC2Ev(ptr %this) unnamed_addr align 2 { entry: store ptr getelementptr inbounds ({ [3 x ptr] }, ptr @_ZTV9Interface, i64 0, inrange i32 0, i64 2), ptr %this, align 8 ret void } define linkonce_odr dso_local void @_ZN4Impl3RunEv(ptr %this) unnamed_addr align 2 { entry: %ref.tmp = alloca ptr, align 8 call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %ref.tmp) store ptr %this, ptr %ref.tmp, align 8 call void @_Z13DoNotOptimizeIP4ImplEvRKT_(ptr nonnull dereferenceable(8) %ref.tmp) call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %ref.tmp) ret void } declare dso_local void @__cxa_pure_virtual() unnamed_addr define linkonce_odr dso_local void @_Z13DoNotOptimizeIP4ImplEvRKT_(ptr dereferenceable(8) %var) local_unnamed_addr { entry: call void asm sideeffect "", "=*m,*m,~{dirflag},~{fpsr},~{flags}"(ptr elementtype(ptr) nonnull %var, ptr elementtype(ptr) nonnull %var) ret void } ; Based on clang/test/CodeGenCXX/member-function-pointer-calls.cpp. ; Check that vf1 and vf2 are inlined into g1 and g2. ; CHECK: @_Z2g1v() ; CHECK-NOT: } ; CHECK: ret i32 1 ; CHECK: @_Z2g2v() ; CHECK-NOT: } ; CHECK: ret i32 2 ; ;struct A { ; virtual int vf1() { return 1; } ; virtual int vf2() { return 2; } ;}; ; ;int f(A* a, int (A::*fp)()) { ; return (a->*fp)(); ;} ;int g1() { ; A a; ; return f(&a, &A::vf1); ;} ;int g2() { ; A a; ; return f(&a, &A::vf2); ;} %struct.A = type { ptr } @_ZTV1A = linkonce_odr unnamed_addr constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr @_ZTI1A, ptr @_ZN1A3vf1Ev, ptr @_ZN1A3vf2Ev] }, align 8 @_ZTS1A = linkonce_odr constant [3 x i8] c"1A\00", align 1 @_ZTI1A = linkonce_odr constant { ptr, ptr } { ptr getelementptr inbounds (ptr, ptr @_ZTVN10__cxxabiv117__class_type_infoE, i64 2), ptr @_ZTS1A }, align 8 define i32 @_Z1fP1AMS_FivE(ptr %a, i64 %fp.coerce0, i64 %fp.coerce1) { entry: %0 = getelementptr inbounds i8, ptr %a, i64 %fp.coerce1 %1 = and i64 %fp.coerce0, 1 %memptr.isvirtual = icmp eq i64 %1, 0 br i1 %memptr.isvirtual, label %memptr.nonvirtual, label %memptr.virtual memptr.virtual: ; preds = %entry %vtable = load ptr, ptr %0, align 8 %2 = add i64 %fp.coerce0, -1 %3 = getelementptr i8, ptr %vtable, i64 %2 %memptr.virtualfn = load ptr, ptr %3, align 8 br label %memptr.end memptr.nonvirtual: ; preds = %entry %memptr.nonvirtualfn = inttoptr i64 %fp.coerce0 to ptr br label %memptr.end memptr.end: ; preds = %memptr.nonvirtual, %memptr.virtual %4 = phi ptr [ %memptr.virtualfn, %memptr.virtual ], [ %memptr.nonvirtualfn, %memptr.nonvirtual ] %call = call i32 %4(ptr %0) ret i32 %call } define i32 @_Z2g1v() { entry: %a = alloca %struct.A, align 8 call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %a) call void @_ZN1AC1Ev(ptr nonnull %a) %call = call i32 @_Z1fP1AMS_FivE(ptr nonnull %a, i64 1, i64 0) call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %a) ret i32 %call } define linkonce_odr void @_ZN1AC1Ev(ptr %this) align 2 { entry: call void @_ZN1AC2Ev(ptr %this) ret void } define i32 @_Z2g2v() { entry: %a = alloca %struct.A, align 8 call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %a) call void @_ZN1AC1Ev(ptr nonnull %a) %call = call i32 @_Z1fP1AMS_FivE(ptr nonnull %a, i64 9, i64 0) call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %a) ret i32 %call } define linkonce_odr void @_ZN1AC2Ev(ptr %this) align 2 { entry: store ptr getelementptr inbounds ({ [4 x ptr] }, ptr @_ZTV1A, i64 0, inrange i32 0, i64 2), ptr %this, align 8 ret void } define linkonce_odr i32 @_ZN1A3vf1Ev(ptr %this) align 2 { entry: ret i32 1 } define linkonce_odr i32 @_ZN1A3vf2Ev(ptr %this) align 2 { entry: ret i32 2 }