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190 lines
9.2 KiB
190 lines
9.2 KiB
4 months ago
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// RUN: %clang_cc1 -std=c++11 -fno-rtti -emit-llvm -triple=i386-pc-win32 %s -o - | FileCheck %s --check-prefix=CHECK32
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// RUN: %clang_cc1 -std=c++11 -fno-rtti -emit-llvm -triple=x86_64-pc-win32 %s -o - | FileCheck %s --check-prefix=CHECK64
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struct S {
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int x, y, z;
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};
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// U is not trivially copyable, and requires inalloca to pass by value.
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struct U {
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int u;
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U();
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~U();
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U(const U &);
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};
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struct B;
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struct C {
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virtual void foo();
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virtual int bar(int, double);
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virtual S baz(int);
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virtual S qux(U);
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virtual void thud(...);
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virtual void (B::*plugh())();
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};
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namespace {
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struct D {
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virtual void foo();
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};
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}
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void f() {
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void (C::*ptr)();
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ptr = &C::foo;
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ptr = &C::foo; // Don't crash trying to define the thunk twice :)
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int (C::*ptr2)(int, double);
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ptr2 = &C::bar;
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S (C::*ptr3)(int);
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ptr3 = &C::baz;
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void (D::*ptr4)();
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ptr4 = &D::foo;
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S (C::*ptr5)(U);
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ptr5 = &C::qux;
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void (C::*ptr6)(...);
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ptr6 = &C::thud;
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auto ptr7 = &C::plugh;
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// CHECK32-LABEL: define dso_local void @"?f@@YAXXZ"()
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// CHECK32: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$BA@AE" to i8*), i8** %ptr
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// CHECK32: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$B3AE" to i8*), i8** %ptr2
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// CHECK32: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$B7AE" to i8*), i8** %ptr3
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// CHECK32: store i8* bitcast (void (%"struct.(anonymous namespace)::D"*, ...)* @"??_9D@?A0x{{[^@]*}}@@$BA@AE" to i8*), i8** %ptr4
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// CHECK32: }
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//
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// CHECK64-LABEL: define dso_local void @"?f@@YAXXZ"()
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// CHECK64: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$BA@AA" to i8*), i8** %ptr
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// CHECK64: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$B7AA" to i8*), i8** %ptr2
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// CHECK64: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$BBA@AA" to i8*), i8** %ptr3
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// CHECK64: store i8* bitcast (void (%"struct.(anonymous namespace)::D"*, ...)* @"??_9D@?A0x{{[^@]*}}@@$BA@AA" to i8*), i8** %ptr
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// CHECK64: }
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}
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// Thunk for calling the 1st virtual function in C with no parameters.
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// CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$BA@AE"(%struct.C* %this, ...)
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// CHECK32: #[[ATTR:[0-9]+]]
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// CHECK32-NOT: unnamed_addr
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// CHECK32: comdat
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// CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 0
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// CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK32: musttail call x86_thiscallcc void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK32-NEXT: ret void
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// CHECK32: }
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//
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// CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BA@AA"(%struct.C* %this, ...)
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// CHECK64: #[[ATTR:[0-9]+]]
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// CHECK64-NOT: unnamed_addr
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// CHECK64: comdat
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// CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 0
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// CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK64-NEXT: ret void
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// CHECK64: }
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// Thunk for calling the 2nd virtual function in C, taking int and double as parameters, returning int.
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// CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$B3AE"(%struct.C* %this, ...)
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// CHECK32: #[[ATTR]] comdat
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// CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 1
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// CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK32: musttail call x86_thiscallcc void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK32-NEXT: ret void
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// CHECK32: }
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//
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// CHECK64-LABEL: define linkonce_odr void @"??_9C@@$B7AA"(%struct.C* %this, ...)
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// CHECK64: #[[ATTR]] comdat
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// CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 1
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// CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK64-NEXT: ret void
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// CHECK64: }
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// Thunk for calling the 3rd virtual function in C, taking an int parameter, returning a struct.
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// CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$B7AE"(%struct.C* %this, ...)
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// CHECK32: #[[ATTR]] comdat
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// CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 2
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// CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK32: musttail call x86_thiscallcc void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK32-NEXT: ret void
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// CHECK32: }
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//
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// CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BBA@AA"(%struct.C* %this, ...)
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// CHECK64: #[[ATTR]] comdat
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// CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 2
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// CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK64-NEXT: ret void
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// CHECK64: }
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// Thunk for calling the virtual function in internal class D.
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// CHECK32-LABEL: define internal x86_thiscallcc void @"??_9D@?A0x{{[^@]*}}@@$BA@AE"(%"struct.(anonymous namespace)::D"* %this, ...)
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// CHECK32: #[[ATTR]]
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// CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** %{{.*}}, i64 0
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// CHECK32: [[CALLEE:%.*]] = load void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** [[VPTR]]
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// CHECK32: musttail call x86_thiscallcc void (%"struct.(anonymous namespace)::D"*, ...) [[CALLEE]](%"struct.(anonymous namespace)::D"* %{{.*}}, ...)
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// CHECK32-NEXT: ret void
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// CHECK32: }
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//
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// CHECK64-LABEL: define internal void @"??_9D@?A0x{{[^@]*}}@@$BA@AA"(%"struct.(anonymous namespace)::D"* %this, ...)
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// CHECK64: #[[ATTR]]
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// CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** %{{.*}}, i64 0
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// CHECK64: [[CALLEE:%.*]] = load void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** [[VPTR]]
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// CHECK64: musttail call void (%"struct.(anonymous namespace)::D"*, ...) [[CALLEE]](%"struct.(anonymous namespace)::D"* %{{.*}}, ...)
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// CHECK64-NEXT: ret void
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// CHECK64: }
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// Thunk for calling the fourth virtual function in C, taking a struct parameter
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// and returning a struct.
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// CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$BM@AE"(%struct.C* %this, ...) {{.*}} comdat
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// CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 3
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// CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK32: musttail call x86_thiscallcc void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK32-NEXT: ret void
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// CHECK32: }
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//
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// CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BBI@AA"(%struct.C* %this, ...) {{.*}} comdat
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// CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 3
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// CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK64: ret void
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// CHECK64: }
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// Thunk for calling the fifth virtual function in C which uses the __cdecl calling convention.
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// CHECK32-LABEL: define linkonce_odr void @"??_9C@@$BBA@AA"(%struct.C* %this, ...) {{.*}} comdat align 2 {
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// CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 4
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// CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK32: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK32: ret void
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// CHECK32: }
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//
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// CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BCA@AA"(%struct.C* %this, ...) {{.*}} comdat align 2 {
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// CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 4
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// CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK64: ret void
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// CHECK64: }
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// CHECK32: define linkonce_odr x86_thiscallcc void @"??_9C@@$BBE@AE"(%struct.C* %this, ...) {{.*}} comdat align 2 {
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// CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 5
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// CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK32: musttail call x86_thiscallcc void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK32: ret void
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// CHECK32: }
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// CHECK64: define linkonce_odr void @"??_9C@@$BCI@AA"(%struct.C* %this, ...) {{.*}} comdat align 2 {
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// CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 5
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// CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]]
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// CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...)
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// CHECK64: ret void
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// CHECK64: }
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// CHECK32: #[[ATTR]] = {{{.*}}"thunk"{{.*}}}
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