371 lines
12 KiB
C++
371 lines
12 KiB
C++
// RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=NEWABI
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-unknown -fclang-abi-compat=4.0 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=OLDABI
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-scei-ps4 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=OLDABI
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-windows-msvc -emit-llvm -o - %s -fms-compatibility -fms-compatibility-version=18 | FileCheck %s -check-prefix=WIN64 -check-prefix=WIN64-18
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-windows-msvc -emit-llvm -o - %s -fms-compatibility -fms-compatibility-version=19 | FileCheck %s -check-prefix=WIN64 -check-prefix=WIN64-19
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namespace trivial {
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// Trivial structs should be passed directly.
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struct A {
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void *p;
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};
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void foo(A);
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void bar() {
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foo({});
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}
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// CHECK-LABEL: define void @_ZN7trivial3barEv()
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// CHECK: alloca %"struct.trivial::A"
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// CHECK: load i8*, i8**
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// CHECK: call void @_ZN7trivial3fooENS_1AE(i8* %{{.*}})
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// CHECK-LABEL: declare void @_ZN7trivial3fooENS_1AE(i8*)
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// WIN64-LABEL: declare dso_local void @"?foo@trivial@@YAXUA@1@@Z"(i64)
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}
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namespace default_ctor {
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struct A {
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A();
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void *p;
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};
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void foo(A);
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void bar() {
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// Core issue 1590. We can pass this type in registers, even though C++
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// normally doesn't permit copies when using braced initialization.
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foo({});
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}
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// CHECK-LABEL: define void @_ZN12default_ctor3barEv()
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// CHECK: alloca %"struct.default_ctor::A"
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// CHECK: call void @_Z{{.*}}C1Ev(
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// CHECK: load i8*, i8**
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// CHECK: call void @_ZN12default_ctor3fooENS_1AE(i8* %{{.*}})
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// CHECK-LABEL: declare void @_ZN12default_ctor3fooENS_1AE(i8*)
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// WIN64-LABEL: declare dso_local void @"?foo@default_ctor@@YAXUA@1@@Z"(i64)
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}
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namespace move_ctor {
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// The presence of a move constructor implicitly deletes the trivial copy ctor
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// and means that we have to pass this struct by address.
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struct A {
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A();
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A(A &&o);
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void *p;
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};
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void foo(A);
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void bar() {
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foo({});
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}
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// CHECK-LABEL: define void @_ZN9move_ctor3barEv()
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// CHECK: call void @_Z{{.*}}C1Ev(
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// CHECK-NOT: call
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// NEWABI: call void @_ZN9move_ctor3fooENS_1AE(%"struct.move_ctor::A"* %{{.*}})
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// OLDABI: call void @_ZN9move_ctor3fooENS_1AE(i8* %{{.*}})
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// NEWABI-LABEL: declare void @_ZN9move_ctor3fooENS_1AE(%"struct.move_ctor::A"*)
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// OLDABI-LABEL: declare void @_ZN9move_ctor3fooENS_1AE(i8*)
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// WIN64-LABEL: declare dso_local void @"?foo@move_ctor@@YAXUA@1@@Z"(%"struct.move_ctor::A"*)
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}
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namespace all_deleted {
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struct A {
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A();
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A(const A &o) = delete;
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A(A &&o) = delete;
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void *p;
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};
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void foo(A);
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void bar() {
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foo({});
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}
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// CHECK-LABEL: define void @_ZN11all_deleted3barEv()
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// CHECK: call void @_Z{{.*}}C1Ev(
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// CHECK-NOT: call
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// NEWABI: call void @_ZN11all_deleted3fooENS_1AE(%"struct.all_deleted::A"* %{{.*}})
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// OLDABI: call void @_ZN11all_deleted3fooENS_1AE(i8* %{{.*}})
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// NEWABI-LABEL: declare void @_ZN11all_deleted3fooENS_1AE(%"struct.all_deleted::A"*)
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// OLDABI-LABEL: declare void @_ZN11all_deleted3fooENS_1AE(i8*)
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// WIN64-LABEL: declare dso_local void @"?foo@all_deleted@@YAXUA@1@@Z"(%"struct.all_deleted::A"*)
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}
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namespace implicitly_deleted {
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struct A {
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A();
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A &operator=(A &&o);
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void *p;
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};
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void foo(A);
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void bar() {
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foo({});
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}
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// CHECK-LABEL: define void @_ZN18implicitly_deleted3barEv()
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// CHECK: call void @_Z{{.*}}C1Ev(
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// CHECK-NOT: call
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// NEWABI: call void @_ZN18implicitly_deleted3fooENS_1AE(%"struct.implicitly_deleted::A"* %{{.*}})
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// OLDABI: call void @_ZN18implicitly_deleted3fooENS_1AE(i8* %{{.*}})
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// NEWABI-LABEL: declare void @_ZN18implicitly_deleted3fooENS_1AE(%"struct.implicitly_deleted::A"*)
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// OLDABI-LABEL: declare void @_ZN18implicitly_deleted3fooENS_1AE(i8*)
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// In MSVC 2013, the copy ctor is not deleted by a move assignment. In MSVC 2015, it is.
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// WIN64-18-LABEL: declare dso_local void @"?foo@implicitly_deleted@@YAXUA@1@@Z"(i64
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// WIN64-19-LABEL: declare dso_local void @"?foo@implicitly_deleted@@YAXUA@1@@Z"(%"struct.implicitly_deleted::A"*)
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}
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namespace one_deleted {
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struct A {
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A();
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A(A &&o) = delete;
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void *p;
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};
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void foo(A);
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void bar() {
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foo({});
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}
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// CHECK-LABEL: define void @_ZN11one_deleted3barEv()
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// CHECK: call void @_Z{{.*}}C1Ev(
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// CHECK-NOT: call
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// NEWABI: call void @_ZN11one_deleted3fooENS_1AE(%"struct.one_deleted::A"* %{{.*}})
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// OLDABI: call void @_ZN11one_deleted3fooENS_1AE(i8* %{{.*}})
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// NEWABI-LABEL: declare void @_ZN11one_deleted3fooENS_1AE(%"struct.one_deleted::A"*)
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// OLDABI-LABEL: declare void @_ZN11one_deleted3fooENS_1AE(i8*)
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// WIN64-LABEL: declare dso_local void @"?foo@one_deleted@@YAXUA@1@@Z"(%"struct.one_deleted::A"*)
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}
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namespace copy_defaulted {
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struct A {
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A();
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A(const A &o) = default;
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A(A &&o) = delete;
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void *p;
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};
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void foo(A);
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void bar() {
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foo({});
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}
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// CHECK-LABEL: define void @_ZN14copy_defaulted3barEv()
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// CHECK: call void @_Z{{.*}}C1Ev(
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// CHECK: load i8*, i8**
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// CHECK: call void @_ZN14copy_defaulted3fooENS_1AE(i8* %{{.*}})
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// CHECK-LABEL: declare void @_ZN14copy_defaulted3fooENS_1AE(i8*)
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// WIN64-LABEL: declare dso_local void @"?foo@copy_defaulted@@YAXUA@1@@Z"(i64)
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}
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namespace move_defaulted {
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struct A {
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A();
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A(const A &o) = delete;
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A(A &&o) = default;
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void *p;
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};
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void foo(A);
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void bar() {
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foo({});
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}
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// CHECK-LABEL: define void @_ZN14move_defaulted3barEv()
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// CHECK: call void @_Z{{.*}}C1Ev(
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// CHECK: load i8*, i8**
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// CHECK: call void @_ZN14move_defaulted3fooENS_1AE(i8* %{{.*}})
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// CHECK-LABEL: declare void @_ZN14move_defaulted3fooENS_1AE(i8*)
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// WIN64-LABEL: declare dso_local void @"?foo@move_defaulted@@YAXUA@1@@Z"(%"struct.move_defaulted::A"*)
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}
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namespace trivial_defaulted {
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struct A {
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A();
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A(const A &o) = default;
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void *p;
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};
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void foo(A);
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void bar() {
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foo({});
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}
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// CHECK-LABEL: define void @_ZN17trivial_defaulted3barEv()
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// CHECK: call void @_Z{{.*}}C1Ev(
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// CHECK: load i8*, i8**
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// CHECK: call void @_ZN17trivial_defaulted3fooENS_1AE(i8* %{{.*}})
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// CHECK-LABEL: declare void @_ZN17trivial_defaulted3fooENS_1AE(i8*)
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// WIN64-LABEL: declare dso_local void @"?foo@trivial_defaulted@@YAXUA@1@@Z"(i64)
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}
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namespace two_copy_ctors {
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struct A {
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A();
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A(const A &) = default;
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A(const A &, int = 0);
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void *p;
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};
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struct B : A {};
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void foo(B);
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void bar() {
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foo({});
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}
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// CHECK-LABEL: define void @_ZN14two_copy_ctors3barEv()
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// CHECK: call void @_Z{{.*}}C1Ev(
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// NEWABI: call void @_ZN14two_copy_ctors3fooENS_1BE(%"struct.two_copy_ctors::B"* %{{.*}})
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// OLDABI: call void @_ZN14two_copy_ctors3fooENS_1BE(%"struct.two_copy_ctors::B"* byval
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// NEWABI-LABEL: declare void @_ZN14two_copy_ctors3fooENS_1BE(%"struct.two_copy_ctors::B"*)
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// OLDABI-LABEL: declare void @_ZN14two_copy_ctors3fooENS_1BE(%"struct.two_copy_ctors::B"* byval
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// WIN64-LABEL: declare dso_local void @"?foo@two_copy_ctors@@YAXUB@1@@Z"(%"struct.two_copy_ctors::B"*)
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}
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namespace definition_only {
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struct A {
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A();
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A(A &&o);
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void *p;
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};
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void *foo(A a) { return a.p; }
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// NEWABI-LABEL: define i8* @_ZN15definition_only3fooENS_1AE(%"struct.definition_only::A"*
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// OLDABI-LABEL: define i8* @_ZN15definition_only3fooENS_1AE(i8*
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// WIN64-LABEL: define dso_local i8* @"?foo@definition_only@@YAPEAXUA@1@@Z"(%"struct.definition_only::A"*
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}
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namespace deleted_by_member {
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struct B {
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B();
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B(B &&o);
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void *p;
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};
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struct A {
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A();
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B b;
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};
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void *foo(A a) { return a.b.p; }
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// NEWABI-LABEL: define i8* @_ZN17deleted_by_member3fooENS_1AE(%"struct.deleted_by_member::A"*
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// OLDABI-LABEL: define i8* @_ZN17deleted_by_member3fooENS_1AE(i8*
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// WIN64-LABEL: define dso_local i8* @"?foo@deleted_by_member@@YAPEAXUA@1@@Z"(%"struct.deleted_by_member::A"*
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}
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namespace deleted_by_base {
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struct B {
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B();
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B(B &&o);
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void *p;
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};
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struct A : B {
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A();
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};
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void *foo(A a) { return a.p; }
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// NEWABI-LABEL: define i8* @_ZN15deleted_by_base3fooENS_1AE(%"struct.deleted_by_base::A"*
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// OLDABI-LABEL: define i8* @_ZN15deleted_by_base3fooENS_1AE(i8*
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// WIN64-LABEL: define dso_local i8* @"?foo@deleted_by_base@@YAPEAXUA@1@@Z"(%"struct.deleted_by_base::A"*
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}
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namespace deleted_by_member_copy {
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struct B {
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B();
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B(const B &o) = delete;
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void *p;
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};
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struct A {
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A();
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B b;
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};
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void *foo(A a) { return a.b.p; }
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// NEWABI-LABEL: define i8* @_ZN22deleted_by_member_copy3fooENS_1AE(%"struct.deleted_by_member_copy::A"*
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// OLDABI-LABEL: define i8* @_ZN22deleted_by_member_copy3fooENS_1AE(i8*
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// WIN64-LABEL: define dso_local i8* @"?foo@deleted_by_member_copy@@YAPEAXUA@1@@Z"(%"struct.deleted_by_member_copy::A"*
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}
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namespace deleted_by_base_copy {
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struct B {
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B();
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B(const B &o) = delete;
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void *p;
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};
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struct A : B {
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A();
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};
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void *foo(A a) { return a.p; }
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// NEWABI-LABEL: define i8* @_ZN20deleted_by_base_copy3fooENS_1AE(%"struct.deleted_by_base_copy::A"*
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// OLDABI-LABEL: define i8* @_ZN20deleted_by_base_copy3fooENS_1AE(i8*
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// WIN64-LABEL: define dso_local i8* @"?foo@deleted_by_base_copy@@YAPEAXUA@1@@Z"(%"struct.deleted_by_base_copy::A"*
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}
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namespace explicit_delete {
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struct A {
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A();
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A(const A &o) = delete;
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void *p;
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};
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// NEWABI-LABEL: define i8* @_ZN15explicit_delete3fooENS_1AE(%"struct.explicit_delete::A"*
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// OLDABI-LABEL: define i8* @_ZN15explicit_delete3fooENS_1AE(i8*
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// WIN64-LABEL: define dso_local i8* @"?foo@explicit_delete@@YAPEAXUA@1@@Z"(%"struct.explicit_delete::A"*
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void *foo(A a) { return a.p; }
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}
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namespace implicitly_deleted_copy_ctor {
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struct A {
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// No move ctor due to copy assignment.
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A &operator=(const A&);
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// Deleted copy ctor due to rvalue ref member.
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int &&ref;
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};
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// NEWABI-LABEL: define {{.*}} @_ZN28implicitly_deleted_copy_ctor3fooENS_1AE(%"struct.implicitly_deleted_copy_ctor::A"*
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// OLDABI-LABEL: define {{.*}} @_ZN28implicitly_deleted_copy_ctor3fooENS_1AE(i32*
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// WIN64-LABEL: define {{.*}} @"?foo@implicitly_deleted_copy_ctor@@YAAEAHUA@1@@Z"(%"struct.implicitly_deleted_copy_ctor::A"*
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int &foo(A a) { return a.ref; }
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struct B {
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// Passed direct: has non-deleted trivial copy ctor.
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B &operator=(const B&);
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int &ref;
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};
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int &foo(B b) { return b.ref; }
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// CHECK-LABEL: define {{.*}} @_ZN28implicitly_deleted_copy_ctor3fooENS_1BE(i32*
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// WIN64-LABEL: define {{.*}} @"?foo@implicitly_deleted_copy_ctor@@YAAEAHUB@1@@Z"(i64
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struct X { X(const X&); };
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struct Y { Y(const Y&) = default; };
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union C {
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C &operator=(const C&);
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// Passed indirect: copy ctor deleted due to variant member with nontrivial copy ctor.
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X x;
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int n;
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};
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int foo(C c) { return c.n; }
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// CHECK-LABEL: define {{.*}} @_ZN28implicitly_deleted_copy_ctor3fooENS_1CE(%"union.implicitly_deleted_copy_ctor::C"*
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// WIN64-LABEL: define {{.*}} @"?foo@implicitly_deleted_copy_ctor@@YAHTC@1@@Z"(%"union.implicitly_deleted_copy_ctor::C"*
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struct D {
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D &operator=(const D&);
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// Passed indirect: copy ctor deleted due to variant member with nontrivial copy ctor.
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union {
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X x;
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int n;
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};
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};
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int foo(D d) { return d.n; }
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// CHECK-LABEL: define {{.*}} @_ZN28implicitly_deleted_copy_ctor3fooENS_1DE(%"struct.implicitly_deleted_copy_ctor::D"*
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// WIN64-LABEL: define {{.*}} @"?foo@implicitly_deleted_copy_ctor@@YAHUD@1@@Z"(%"struct.implicitly_deleted_copy_ctor::D"*
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union E {
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// Passed direct: has non-deleted trivial copy ctor.
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E &operator=(const E&);
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Y y;
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int n;
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};
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int foo(E e) { return e.n; }
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// CHECK-LABEL: define {{.*}} @_ZN28implicitly_deleted_copy_ctor3fooENS_1EE(i32
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// WIN64-LABEL: define {{.*}} @"?foo@implicitly_deleted_copy_ctor@@YAHTE@1@@Z"(i32
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struct F {
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// Passed direct: has non-deleted trivial copy ctor.
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F &operator=(const F&);
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union {
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Y y;
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int n;
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};
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};
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int foo(F f) { return f.n; }
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// CHECK-LABEL: define {{.*}} @_ZN28implicitly_deleted_copy_ctor3fooENS_1FE(i32
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// WIN64-LABEL: define {{.*}} @"?foo@implicitly_deleted_copy_ctor@@YAHUF@1@@Z"(i32
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}
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