derek.holloway
7502bf64a4
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116 lines
7.3 KiB
C++
116 lines
7.3 KiB
C++
// For the `CInlined` struct, where all member functions are inlined, we check the following cases:
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// - If the definition of its destructor is visible:
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// * The vtable is generated with a COMDAT specifier
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// * Its '__clang_vtable' is generated
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// - Otherwise:
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// * The vtable is declared
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// * Its '__clang_vtable' is NOT generated
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//
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// For the `CNoInline` strcut, where member functions are defined as non-inline, we check the following:
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// - Regardless of whether the definition of its destructor is visible or not:
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// * The vtable is generated
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// * Its '__clang_vtable' is generated
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//
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// For the `CNoFnDef` struct, where member functions are declared only, we check the following:
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// - Regardless of whether the definition of its destructor is visible or not:
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// # when non-optimized:
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// * The vtable is declared
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// * Its '__clang_vtable' is NOT generated
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// # when optimized even if no LLVM passes:
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// * The vtable is declared as `available_externally` (which is potentially turned into `external` by LLVM passes)
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// * Its '__clang_vtable' is generated only if the compiler is targeting the non-COFF platforms
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struct CInlined {
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virtual void f1() noexcept {}
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virtual void f2() noexcept {}
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virtual ~CInlined() noexcept;
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};
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#ifndef NO_DTOR_BODY
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inline CInlined::~CInlined() noexcept {}
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#endif
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struct CNoInline {
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virtual void g1() noexcept;
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virtual void g2() noexcept;
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virtual ~CNoInline() noexcept;
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};
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void CNoInline::g1() noexcept {}
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void CNoInline::g2() noexcept {}
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#ifndef NO_DTOR_BODY
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CNoInline::~CNoInline() noexcept {}
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#endif
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struct CNoFnDef {
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virtual void h1() noexcept;
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virtual void h2() noexcept;
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virtual ~CNoFnDef() noexcept;
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};
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#ifndef NO_DTOR_BODY
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CNoFnDef::~CNoFnDef() noexcept {}
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#endif
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int main() {
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CInlined Inlined;
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CNoInline NoInline;
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CNoFnDef NoFnDef;
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return 0;
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}
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// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s -check-prefixes CHECK-HAS-DTOR,CHECK-HAS-DTOR-O0
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// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s -check-prefixes CHECK-HAS-DTOR,CHECK-HAS-DTOR-O1
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// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes -DNO_DTOR_BODY %s -o - | FileCheck %s -check-prefixes CHECK-NO-DTOR,CHECK-NO-DTOR-O0
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// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes -DNO_DTOR_BODY %s -o - | FileCheck %s -check-prefixes CHECK-NO-DTOR,CHECK-NO-DTOR-O1
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// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s -check-prefixes CHECK-HAS-DTOR,CHECK-HAS-DTOR-O0
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// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s -check-prefixes CHECK-HAS-DTOR,CHECK-HAS-DTOR-O1-NODBG
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// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes -DNO_DTOR_BODY %s -o - | FileCheck %s -check-prefixes CHECK-NO-DTOR,CHECK-NO-DTOR-O0
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// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes -DNO_DTOR_BODY %s -o - | FileCheck %s -check-prefixes CHECK-NO-DTOR,CHECK-NO-DTOR-O1-NODBG
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// CHECK-HAS-DTOR: $_ZTV8CInlined = comdat any
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// CHECK-HAS-DTOR-NOT: $_ZTV9CNoInline
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// CHECK-HAS-DTOR-NOT: $_ZTV8CNoFnDef
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// CHECK-HAS-DTOR-DAG: @_ZTV8CInlined = linkonce_odr {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, comdat, align 8, !dbg [[INLINED_VTABLE_VAR:![0-9]+]]
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// CHECK-HAS-DTOR-DAG: @_ZTV9CNoInline = {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOINLINE_VTABLE_VAR:![0-9]+]]
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// CHECK-HAS-DTOR-O0-DAG: @_ZTV8CNoFnDef = external {{.*}}constant {{{ \[[^]]*\] }}}, align 8{{$}}
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// CHECK-HAS-DTOR-O1-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOFNDEF_VTABLE_VAR:![0-9]+]]
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// CHECK-HAS-DTOR-O1-NODBG-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8{{$}}
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// CHECK-HAS-DTOR: !llvm.dbg.cu
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// CHECK-HAS-DTOR-DAG: [[INLINED_VTABLE:![0-9]+]] = distinct !DIGlobalVariable(name: "__clang_vtable", linkageName: "_ZTV8CInlined"
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// CHECK-HAS-DTOR-DAG: [[INLINED_VTABLE_VAR]] = !DIGlobalVariableExpression(var: [[INLINED_VTABLE]], expr: !DIExpression())
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// CHECK-HAS-DTOR-DAG: [[INLINED:![0-9]+]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "CInlined"
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// CHECK-HAS-DTOR-DAG: !DIDerivedType(tag: DW_TAG_variable, name: "__clang_vtable", scope: [[INLINED]], file: {{.*}}, baseType: {{![0-9]+}}, flags: DIFlagPrivate | DIFlagArtificial | DIFlagStaticMember)
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// CHECK-HAS-DTOR-DAG: [[NOINLINE_VTABLE:![0-9]+]] = distinct !DIGlobalVariable(name: "__clang_vtable", linkageName: "_ZTV9CNoInline"
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// CHECK-HAS-DTOR-DAG: [[NOINLINE_VTABLE_VAR]] = !DIGlobalVariableExpression(var: [[NOINLINE_VTABLE]], expr: !DIExpression())
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// CHECK-HAS-DTOR-DAG: [[NOINLINE:![0-9]+]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "CNoInline"
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// CHECK-HAS-DTOR-DAG: !DIDerivedType(tag: DW_TAG_variable, name: "__clang_vtable", scope: [[NOINLINE]], file: {{.*}}, baseType: {{![0-9]+}}, flags: DIFlagPrivate | DIFlagArtificial | DIFlagStaticMember)
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// CHECK-HAS-DTOR-O1-DAG: [[NOFNDEF_VTABLE:![0-9]+]] = distinct !DIGlobalVariable(name: "__clang_vtable", linkageName: "_ZTV8CNoFnDef"
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// CHECK-HAS-DTOR-O1-DAG: [[NOFNDEF_VTABLE_VAR]] = !DIGlobalVariableExpression(var: [[NOFNDEF_VTABLE]], expr: !DIExpression())
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// CHECK-NO-DTOR-NOT: $_ZTV8CInlined
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// CHECK-NO-DTOR-NOT: $_ZTV9CNoInline
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// CHECK-NO-DTOR-NOT: $_ZTV8CNoFnDef
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// CHECK-NO-DTOR-DAG: @_ZTV8CInlined = external {{.*}}constant {{.*}}, align 8{{$}}
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// CHECK-NO-DTOR-DAG: @_ZTV9CNoInline = {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOINLINE_VTABLE_VAR:![0-9]+]]
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// CHECK-NO-DTOR-O0-DAG: @_ZTV8CNoFnDef = external {{.*}}constant {{{ \[[^]]*\] }}}, align 8{{$}}
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// CHECK-NO-DTOR-O1-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOFNDEF_VTABLE_VAR:![0-9]+]]
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// CHECK-NO-DTOR-O1-NODBG-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8{{$}}
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// CHECK-NO-DTOR: !llvm.dbg.cu
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// CHECK-NO-DTOR-DAG: [[NOINLINE_VTABLE:![0-9]+]] = distinct !DIGlobalVariable(name: "__clang_vtable", linkageName: "_ZTV9CNoInline"
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// CHECK-NO-DTOR-DAG: [[NOINLINE_VTABLE_VAR]] = !DIGlobalVariableExpression(var: [[NOINLINE_VTABLE]], expr: !DIExpression())
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// CHECK-NO-DTOR-DAG: [[NOINLINE:![0-9]+]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "CNoInline"
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// CHECK-NO-DTOR-DAG: !DIDerivedType(tag: DW_TAG_variable, name: "__clang_vtable", scope: [[NOINLINE]], file: {{.*}}, baseType: {{![0-9]+}}, flags: DIFlagPrivate | DIFlagArtificial | DIFlagStaticMember)
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// CHECK-NO-DTOR-O1-DAG: [[NOFNDEF_VTABLE:![0-9]+]] = distinct !DIGlobalVariable(name: "__clang_vtable", linkageName: "_ZTV8CNoFnDef"
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// CHECK-NO-DTOR-O1-DAG: [[NOFNDEF_VTABLE_VAR]] = !DIGlobalVariableExpression(var: [[NOFNDEF_VTABLE]], expr: !DIExpression())
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