From 804359dce01b79b3178555d582fd26905fc9bff2 Mon Sep 17 00:00:00 2001 From: ATHARVA <89757222+jaswanthsanjay88@users.noreply.github.com> Date: Fri, 18 Sep 2026 18:08:53 +0000 Subject: [PATCH] Fix crash when lowering Carbon derived class with C++ virtual base class (#7745) If a Carbon class overrides virtual functions from a C++ base class but is never referenced from C++, it is never exported to Clang. During lowering, `BuildVtable` then fails to find a `CXXRecordDecl` and crashes when attempting to get the vtable from Clang's code generator. Ensure dynamic classes with foreign vtables are exported to Clang when completing the class definition in `CheckCompleteClassType`, and look up `first_decl_id()` in `BuildVtable`. Fixes #7721 --------- Co-authored-by: Dana Jansens --- toolchain/check/class.cpp | 33 ++- toolchain/check/cpp/export.cpp | 10 + toolchain/check/cpp/export.h | 5 + .../interop/cpp/class/export/override.carbon | 21 ++ .../interop/cpp/class/import/override.carbon | 16 +- toolchain/lower/file_context.cpp | 7 +- .../interop/cpp/class/import/dynamic.carbon | 163 +++++++------ .../interop/cpp/class/virtual_fn.carbon | 74 +++--- .../cpp/class/virtual_fn_carbon_only.carbon | 217 ++++++++++++++++++ 9 files changed, 416 insertions(+), 130 deletions(-) create mode 100644 toolchain/lower/testdata/interop/cpp/class/virtual_fn_carbon_only.carbon diff --git a/toolchain/check/class.cpp b/toolchain/check/class.cpp index 3c1df1a6c161..a79bd59d27bf 100644 --- a/toolchain/check/class.cpp +++ b/toolchain/check/class.cpp @@ -174,13 +174,15 @@ static auto CompareVirtualWithOverrider(const SemIR::Function& base_fn, return OverrideMatchResult::Match; } -// Builds and returns a vtable for the current class. Assumes that the virtual -// functions for the class are listed as the top element of the `vtable_stack`. +// Builds and returns a vtable for the current class, along with a bool +// indicating whether it is a Carbon-native vtable (false for a foreign vtable +// inherited from a C++ base class). Assumes that the virtual functions for the +// class are listed as the top element of the `vtable_stack`. static auto BuildVtable(Context& context, Parse::ClassDefinitionId node_id, SemIR::ClassId class_id, std::optional base_class_type, llvm::ArrayRef vtable_contents) - -> SemIR::VtableId { + -> std::pair { auto base_vtable_id = SemIR::VtableId::None; auto base_class_specific_id = SemIR::SpecificId::None; @@ -358,10 +360,11 @@ static auto BuildVtable(Context& context, Parse::ClassDefinitionId node_id, } } - return context.vtables().Add( + auto vtable_id = context.vtables().Add( {{.class_id = class_id, .virtual_functions_id = context.inst_blocks().Add(vtable), .carbon_native_vtable = carbon_native_vtable}}); + return {vtable_id, carbon_native_vtable}; } // Checks that the specified finished class definition is valid and builds and @@ -411,9 +414,11 @@ static auto CheckCompleteClassType( {.name_id = SemIR::NameId::Base, .type_inst_id = base_type_inst_id}); } + bool foreign_vtable = false; if (class_info.is_dynamic) { - auto vtable_id = BuildVtable(context, node_id, class_id, base_class_type, - vtable_contents); + auto [vtable_id, carbon_native_vtable] = BuildVtable( + context, node_id, class_id, base_class_type, vtable_contents); + foreign_vtable = !carbon_native_vtable; auto vptr_type_id = GetPointerType(context, SemIR::VtableType::TypeInstId); class_info.vtable_decl_id = AddInst( context, node_id, {.type_id = vptr_type_id, .vtable_id = vtable_id}); @@ -422,11 +427,25 @@ static auto CheckCompleteClassType( auto struct_type_id = GetStructType( context, AddStructTypeFields(context, struct_type_fields, field_decls)); - return AddInst( + auto complete_type_witness_id = AddInst( context, node_id, {.type_id = GetSingletonType(context, SemIR::WitnessType::TypeInstId), .object_repr_type_inst_id = context.types().GetTypeInstId(struct_type_id)}); + class_info.complete_type_witness_id = complete_type_witness_id; + + if (foreign_vtable) { + if (class_info.generic_id.has_value()) { + context.TODO(class_info.first_decl_id(), + "generic class deriving from C++ virtual class"); + } else { + ExportAndCompleteClassToCpp( + context, + context.types().GetAs(class_info.self_type_id)); + } + } + + return complete_type_witness_id; } auto ComputeClassObjectRepr(Context& context, Parse::ClassDefinitionId node_id, diff --git a/toolchain/check/cpp/export.cpp b/toolchain/check/cpp/export.cpp index a96de44478e0..ba1aa691ed9b 100644 --- a/toolchain/check/cpp/export.cpp +++ b/toolchain/check/cpp/export.cpp @@ -293,6 +293,16 @@ auto ExportClassToCpp(Context& context, SemIR::ClassType class_type) return record_decl; } +auto ExportAndCompleteClassToCpp(Context& context, SemIR::ClassType class_type) + -> clang::TagDecl* { + auto* tag_decl = ExportClassToCpp(context, class_type); + if (tag_decl && context.cpp_context() && + context.ast_context().getExternalSource()) { + context.ast_context().getExternalSource()->CompleteType(tag_decl); + } + return tag_decl; +} + // Export the bindings in a generic as a `clang::TemplateParameterList`. static auto ExportGenericBindings(Context& context, SemIR::LocId loc_id, SemIR::GenericId generic_id, diff --git a/toolchain/check/cpp/export.h b/toolchain/check/cpp/export.h index a36261701d23..36edc233c435 100644 --- a/toolchain/check/cpp/export.h +++ b/toolchain/check/cpp/export.h @@ -36,6 +36,11 @@ auto ExportNameScopeToCpp(Context& context, SemIR::LocId loc_id, auto ExportClassToCpp(Context& context, SemIR::ClassType class_type) -> clang::TagDecl*; +// Exports a dynamic Carbon class with a foreign (C++) vtable into C++ as a +// class, and completes its definition. +auto ExportAndCompleteClassToCpp(Context& context, SemIR::ClassType class_type) + -> clang::TagDecl*; + // Exports a generic Carbon class into C++ as a templated class. // // If the generic class has already been exported, returns the existing diff --git a/toolchain/check/testdata/interop/cpp/class/export/override.carbon b/toolchain/check/testdata/interop/cpp/class/export/override.carbon index 222f591d54a5..92c01a66b45b 100644 --- a/toolchain/check/testdata/interop/cpp/class/export/override.carbon +++ b/toolchain/check/testdata/interop/cpp/class/export/override.carbon @@ -57,3 +57,24 @@ void Test() { Carbon::Derived d; } '''; + +// --- fail_todo_generic.carbon +// TODO: Test in `toolchain/lower/testdata/` once generic classes deriving from +// C++ virtual classes pass check. +library "[[@TEST_NAME]]"; +import Cpp; + +inline Cpp ''' +struct VBase { + virtual void f() {} +}; +'''; + +// CHECK:STDERR: fail_todo_generic.carbon:[[@LINE+4]]:1: error: semantics TODO: `generic class deriving from C++ virtual class` [SemanticsTodo] +// CHECK:STDERR: class GenericZ(T: type) { +// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~ +// CHECK:STDERR: +class GenericZ(T: type) { + extend base: Cpp.VBase; + override fn f(unused self) {} +} diff --git a/toolchain/check/testdata/interop/cpp/class/import/override.carbon b/toolchain/check/testdata/interop/cpp/class/import/override.carbon index b45723b85482..9d556e7b84a1 100644 --- a/toolchain/check/testdata/interop/cpp/class/import/override.carbon +++ b/toolchain/check/testdata/interop/cpp/class/import/override.carbon @@ -94,10 +94,16 @@ import Cpp library "overload.h"; class OverloadX { extend base: Cpp.OverloadedBase; // + // CHECK:STDERR: fail_overload_type.carbon:[[@LINE+16]]:23: note: initializing function parameter [InCallToFunctionParam] + // CHECK:STDERR: override fn f(self, x: Cpp.X); + // CHECK:STDERR: ^~~~~~~~ + // CHECK:STDERR: + // CHECK:STDERR: fail_overload_type.carbon: error: cannot implicitly convert expression of type `Cpp.Y` to `Cpp.X` [ConversionFailure] + // CHECK:STDERR: fail_overload_type.carbon: note: type `Cpp.Y` does not implement interface `Core.ImplicitAs(Cpp.X)` [MissingImplInMemberAccessInContext] // CHECK:STDERR: fail_overload_type.carbon:[[@LINE+10]]:23: note: initializing function parameter [InCallToFunctionParam] // CHECK:STDERR: override fn f(self, x: Cpp.X); // CHECK:STDERR: ^~~~~~~~ - // CHECK:STDERR: fail_overload_type.carbon:[[@LINE-8]]:10: in file included here [InCppInclude] + // CHECK:STDERR: fail_overload_type.carbon:[[@LINE-14]]:10: in file included here [InCppInclude] // CHECK:STDERR: ./overload.h:7:16: note: while building thunk to match the signature of this function [ThunkSignature] // CHECK:STDERR: virtual void f(Y y); // CHECK:STDERR: ^ @@ -110,10 +116,16 @@ class OverloadX { class OverloadY { extend base: Cpp.OverloadedBase; // + // CHECK:STDERR: fail_overload_type.carbon:[[@LINE+14]]:23: note: initializing function parameter [InCallToFunctionParam] + // CHECK:STDERR: override fn f(self, y: Cpp.Y); + // CHECK:STDERR: ^~~~~~~~ + // CHECK:STDERR: + // CHECK:STDERR: fail_overload_type.carbon: error: cannot implicitly convert expression of type `Cpp.X` to `Cpp.Y` [ConversionFailure] + // CHECK:STDERR: fail_overload_type.carbon: note: type `Cpp.X` does not implement interface `Core.ImplicitAs(Cpp.Y)` [MissingImplInMemberAccessInContext] // CHECK:STDERR: fail_overload_type.carbon:[[@LINE+8]]:23: note: initializing function parameter [InCallToFunctionParam] // CHECK:STDERR: override fn f(self, y: Cpp.Y); // CHECK:STDERR: ^~~~~~~~ - // CHECK:STDERR: fail_overload_type.carbon:[[@LINE-24]]:10: in file included here [InCppInclude] + // CHECK:STDERR: fail_overload_type.carbon:[[@LINE-36]]:10: in file included here [InCppInclude] // CHECK:STDERR: ./overload.h:6:16: note: while building thunk to match the signature of this function [ThunkSignature] // CHECK:STDERR: virtual void f(X x); // CHECK:STDERR: ^ diff --git a/toolchain/lower/file_context.cpp b/toolchain/lower/file_context.cpp index a65e792d5054..fda5731f5c69 100644 --- a/toolchain/lower/file_context.cpp +++ b/toolchain/lower/file_context.cpp @@ -773,8 +773,11 @@ auto FileContext::BuildVtable(const SemIR::Vtable& vtable, -> llvm::Constant* { const auto& class_info = sem_ir().classes().Get(vtable.class_id); if (!vtable.carbon_native_vtable) { - auto* cxx_record_decl = cast( - sem_ir().clang_decls().Lookup(class_info.latest_decl_id())->key.decl); + const auto* clang_decl = + sem_ir().clang_decls().Lookup(class_info.first_decl_id()); + CARBON_CHECK(clang_decl, "Missing Clang declaration for class {0}", + class_info.name_id); + auto* cxx_record_decl = cast(clang_decl->key.decl); // TODO: This code generator can be for the wrong AST if we're not using // --share-cpp-ast. return context().cpp_code_generator()->GetAddrOfVTable( diff --git a/toolchain/lower/testdata/interop/cpp/class/import/dynamic.carbon b/toolchain/lower/testdata/interop/cpp/class/import/dynamic.carbon index 91cdb1a326f5..666573af7db4 100644 --- a/toolchain/lower/testdata/interop/cpp/class/import/dynamic.carbon +++ b/toolchain/lower/testdata/interop/cpp/class/import/dynamic.carbon @@ -101,21 +101,56 @@ fn DoThing() { // CHECK:STDOUT: ret void, !dbg !58 // CHECK:STDOUT: } // CHECK:STDOUT: -// CHECK:STDOUT: ; Function Attrs: nounwind -// CHECK:STDOUT: define void @_CDoThing.Main() #2 !dbg !60 { +// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind +// CHECK:STDOUT: define weak_odr void @"_C__destroy_thunk:thunk.Derived.Main"(ptr %self) #3 !dbg !60 { // CHECK:STDOUT: entry: -// CHECK:STDOUT: %d.var = alloca { [16 x i8] }, align 8, !dbg !61 -// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %d.var), !dbg !61 -// CHECK:STDOUT: %.loc31_44.1.base = getelementptr inbounds nuw { [16 x i8] }, ptr %d.var, i32 0, i32 0, !dbg !62 -// CHECK:STDOUT: call void @_ZN4BaseC1Ev.carbon_thunk.(ptr %.loc31_44.1.base), !dbg !63 -// CHECK:STDOUT: %.loc31_44.7.base = getelementptr inbounds nuw { [16 x i8] }, ptr %d.var, i32 0, i32 0, !dbg !62 -// CHECK:STDOUT: %.loc31_44.8.base = getelementptr inbounds nuw [16 x i8], ptr %.loc31_44.7.base, i32 0, i32 0, !dbg !62 -// CHECK:STDOUT: %.loc31_44.9.vptr = getelementptr inbounds nuw [8 x i8], ptr %.loc31_44.8.base, i32 0, i32 0, !dbg !62 -// CHECK:STDOUT: store ptr getelementptr inbounds inrange(-16, 24) ({ [5 x ptr] }, ptr @_ZTVN6Carbon7DerivedE, i32 0, i32 0, i32 2), ptr %.loc31_44.9.vptr, align 8, !dbg !62 -// CHECK:STDOUT: %.loc32_11.2.base = getelementptr inbounds nuw { [16 x i8] }, ptr %d.var, i32 0, i32 0, !dbg !66 -// CHECK:STDOUT: call void @_Z3UseR4Base(ptr %.loc32_11.2.base), !dbg !67 -// CHECK:STDOUT: call void @"_COp.b25525d21a9bd472:core.Destroy.Core"(ptr %d.var), !dbg !61 -// CHECK:STDOUT: ret void, !dbg !68 +// CHECK:STDOUT: call void @"_COp.b25525d21a9bd472:core.Destroy.Core"(ptr %self), !dbg !62 +// CHECK:STDOUT: ret void, !dbg !62 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: nounwind +// CHECK:STDOUT: define weak_odr void @"_COp.0a0b9df20a60c6f6:core.Destroy.Core"(ptr %self) #2 !dbg !64 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: ret void, !dbg !66 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: nounwind +// CHECK:STDOUT: define weak_odr void @"_COp.b25525d21a9bd472:core.Destroy.Core"(ptr %self) #2 !dbg !68 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: ret void, !dbg !70 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: nounwind +// CHECK:STDOUT: define void @_Cfunc__carbon_thunk.Derived.Main(ptr %self) #2 !dbg !72 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: call void @_Cfunc.Derived.Main(ptr %self), !dbg !74 +// CHECK:STDOUT: ret void, !dbg !74 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: nounwind +// CHECK:STDOUT: define void @_Cother_func__carbon_thunk.Derived.Main(ptr %self) #2 !dbg !76 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: %Derived.other_func.call.vtable = load ptr, ptr %self, align 8, !dbg !78 +// CHECK:STDOUT: %Derived.other_func.call = call ptr @llvm.load.relative.i32(ptr %Derived.other_func.call.vtable, i32 8), !dbg !78 +// CHECK:STDOUT: call void %Derived.other_func.call(ptr %self), !dbg !78 +// CHECK:STDOUT: ret void, !dbg !78 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: nounwind +// CHECK:STDOUT: define void @_CDoThing.Main() #2 !dbg !80 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: %d.var = alloca { [16 x i8] }, align 8, !dbg !81 +// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %d.var), !dbg !81 +// CHECK:STDOUT: %.loc31_44.1.base = getelementptr inbounds nuw { [16 x i8] }, ptr %d.var, i32 0, i32 0, !dbg !82 +// CHECK:STDOUT: call void @_ZN4BaseC1Ev.carbon_thunk.(ptr %.loc31_44.1.base), !dbg !83 +// CHECK:STDOUT: %.loc31_44.7.base = getelementptr inbounds nuw { [16 x i8] }, ptr %d.var, i32 0, i32 0, !dbg !82 +// CHECK:STDOUT: %.loc31_44.8.base = getelementptr inbounds nuw [16 x i8], ptr %.loc31_44.7.base, i32 0, i32 0, !dbg !82 +// CHECK:STDOUT: %.loc31_44.9.vptr = getelementptr inbounds nuw [8 x i8], ptr %.loc31_44.8.base, i32 0, i32 0, !dbg !82 +// CHECK:STDOUT: store ptr getelementptr inbounds inrange(-16, 24) ({ [5 x ptr] }, ptr @_ZTVN6Carbon7DerivedE, i32 0, i32 0, i32 2), ptr %.loc31_44.9.vptr, align 8, !dbg !82 +// CHECK:STDOUT: %.loc32_11.2.base = getelementptr inbounds nuw { [16 x i8] }, ptr %d.var, i32 0, i32 0, !dbg !86 +// CHECK:STDOUT: call void @_Z3UseR4Base(ptr %.loc32_11.2.base), !dbg !87 +// CHECK:STDOUT: call void @"_COp.b25525d21a9bd472:core.Destroy.Core"(ptr %d.var), !dbg !81 +// CHECK:STDOUT: ret void, !dbg !88 // CHECK:STDOUT: } // CHECK:STDOUT: // CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable @@ -128,46 +163,11 @@ fn DoThing() { // CHECK:STDOUT: ret void // CHECK:STDOUT: } // CHECK:STDOUT: -// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind -// CHECK:STDOUT: define weak_odr void @"_C__destroy_thunk:thunk.Derived.Main"(ptr %self) #3 !dbg !69 { -// CHECK:STDOUT: entry: -// CHECK:STDOUT: call void @"_COp.b25525d21a9bd472:core.Destroy.Core"(ptr %self), !dbg !71 -// CHECK:STDOUT: ret void, !dbg !71 -// CHECK:STDOUT: } -// CHECK:STDOUT: -// CHECK:STDOUT: ; Function Attrs: nounwind -// CHECK:STDOUT: define weak_odr void @"_COp.0a0b9df20a60c6f6:core.Destroy.Core"(ptr %self) #2 !dbg !73 { -// CHECK:STDOUT: entry: -// CHECK:STDOUT: ret void, !dbg !75 -// CHECK:STDOUT: } -// CHECK:STDOUT: -// CHECK:STDOUT: ; Function Attrs: nounwind -// CHECK:STDOUT: define weak_odr void @"_COp.b25525d21a9bd472:core.Destroy.Core"(ptr %self) #2 !dbg !77 { -// CHECK:STDOUT: entry: -// CHECK:STDOUT: ret void, !dbg !79 -// CHECK:STDOUT: } -// CHECK:STDOUT: -// CHECK:STDOUT: ; Function Attrs: nounwind -// CHECK:STDOUT: define void @_Cfunc__carbon_thunk.Derived.Main(ptr %self) #2 !dbg !81 { -// CHECK:STDOUT: entry: -// CHECK:STDOUT: call void @_Cfunc.Derived.Main(ptr %self), !dbg !83 -// CHECK:STDOUT: ret void, !dbg !83 -// CHECK:STDOUT: } -// CHECK:STDOUT: -// CHECK:STDOUT: ; Function Attrs: nounwind -// CHECK:STDOUT: define void @_Cother_func__carbon_thunk.Derived.Main(ptr %self) #2 !dbg !85 { -// CHECK:STDOUT: entry: -// CHECK:STDOUT: %Derived.other_func.call.vtable = load ptr, ptr %self, align 8, !dbg !87 -// CHECK:STDOUT: %Derived.other_func.call = call ptr @llvm.load.relative.i32(ptr %Derived.other_func.call.vtable, i32 8), !dbg !87 -// CHECK:STDOUT: call void %Derived.other_func.call(ptr %self), !dbg !87 -// CHECK:STDOUT: ret void, !dbg !87 -// CHECK:STDOUT: } +// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: read) +// CHECK:STDOUT: declare ptr @llvm.load.relative.i32(ptr, i32) #5 // CHECK:STDOUT: // CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) -// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #5 -// CHECK:STDOUT: -// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: read) -// CHECK:STDOUT: declare ptr @llvm.load.relative.i32(ptr, i32) #6 +// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #6 // CHECK:STDOUT: // CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable // CHECK:STDOUT: define internal void @_ZNR6Carbon7Derived4funcEv(ptr noundef nonnull align 8 dereferenceable(12) %this) unnamed_addr #4 align 2 { @@ -212,15 +212,14 @@ fn DoThing() { // CHECK:STDOUT: // CHECK:STDOUT: ; uselistorder directives // CHECK:STDOUT: uselistorder ptr @_ZN11FurtherBase17further_base_funcEv, { 2, 1, 0 } -// CHECK:STDOUT: uselistorder ptr @"_COp.b25525d21a9bd472:core.Destroy.Core", { 1, 0 } // CHECK:STDOUT: // CHECK:STDOUT: attributes #0 = { mustprogress noinline nounwind optnone uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } // CHECK:STDOUT: attributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } // CHECK:STDOUT: attributes #2 = { nounwind } // CHECK:STDOUT: attributes #3 = { alwaysinline nounwind } // CHECK:STDOUT: attributes #4 = { alwaysinline mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } -// CHECK:STDOUT: attributes #5 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) } -// CHECK:STDOUT: attributes #6 = { nocallback nofree nosync nounwind willreturn memory(argmem: read) } +// CHECK:STDOUT: attributes #5 = { nocallback nofree nosync nounwind willreturn memory(argmem: read) } +// CHECK:STDOUT: attributes #6 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) } // CHECK:STDOUT: attributes #7 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } // CHECK:STDOUT: // CHECK:STDOUT: !llvm.dbg.cu = !{!38} @@ -253,33 +252,33 @@ fn DoThing() { // CHECK:STDOUT: !56 = !DILocalVariable(arg: 1, scope: !55, type: !40) // CHECK:STDOUT: !58 = !DILocation(line: 26, column: 3, scope: !55) // CHECK:STDOUT: !59 = !{!56} -// CHECK:STDOUT: !60 = distinct !DISubprogram(name: "DoThing", linkageName: "_CDoThing.Main", scope: null, file: !37, line: 30, type: !44, spFlags: DISPFlagDefinition, unit: !38) -// CHECK:STDOUT: !61 = !DILocation(line: 31, column: 3, scope: !60) -// CHECK:STDOUT: !62 = !DILocation(line: 31, column: 20, scope: !60) -// CHECK:STDOUT: !63 = !DILocation(line: 31, column: 29, scope: !60) -// CHECK:STDOUT: !66 = !DILocation(line: 32, column: 11, scope: !60) -// CHECK:STDOUT: !67 = !DILocation(line: 32, column: 3, scope: !60) -// CHECK:STDOUT: !68 = !DILocation(line: 30, column: 1, scope: !60) -// CHECK:STDOUT: !69 = distinct !DISubprogram(name: "__destroy_thunk", linkageName: "_C__destroy_thunk:thunk.Derived.Main", scope: null, file: !37, line: 22, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !72) -// CHECK:STDOUT: !70 = !DILocalVariable(arg: 1, scope: !69, type: !40) -// CHECK:STDOUT: !71 = !DILocation(line: 22, column: 1, scope: !69) -// CHECK:STDOUT: !72 = !{!70} -// CHECK:STDOUT: !73 = distinct !DISubprogram(name: "Op", linkageName: "_COp.0a0b9df20a60c6f6:core.Destroy.Core", scope: null, file: !37, line: 22, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !76) -// CHECK:STDOUT: !74 = !DILocalVariable(arg: 1, scope: !73, type: !40) -// CHECK:STDOUT: !75 = !DILocation(line: 22, column: 1, scope: !73) -// CHECK:STDOUT: !76 = !{!74} -// CHECK:STDOUT: !77 = distinct !DISubprogram(name: "Op", linkageName: "_COp.b25525d21a9bd472:core.Destroy.Core", scope: null, file: !37, line: 22, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !80) -// CHECK:STDOUT: !78 = !DILocalVariable(arg: 1, scope: !77, type: !40) -// CHECK:STDOUT: !79 = !DILocation(line: 22, column: 1, scope: !77) -// CHECK:STDOUT: !80 = !{!78} -// CHECK:STDOUT: !81 = distinct !DISubprogram(name: "func__carbon_thunk", linkageName: "_Cfunc__carbon_thunk.Derived.Main", scope: null, file: !37, line: 26, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !84) -// CHECK:STDOUT: !82 = !DILocalVariable(arg: 1, scope: !81, type: !40) -// CHECK:STDOUT: !83 = !DILocation(line: 26, column: 3, scope: !81) -// CHECK:STDOUT: !84 = !{!82} -// CHECK:STDOUT: !85 = distinct !DISubprogram(name: "other_func__carbon_thunk", linkageName: "_Cother_func__carbon_thunk.Derived.Main", scope: null, file: !37, line: 24, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !88) -// CHECK:STDOUT: !86 = !DILocalVariable(arg: 1, scope: !85, type: !40) -// CHECK:STDOUT: !87 = !DILocation(line: 24, column: 3, scope: !85) -// CHECK:STDOUT: !88 = !{!86} +// CHECK:STDOUT: !60 = distinct !DISubprogram(name: "__destroy_thunk", linkageName: "_C__destroy_thunk:thunk.Derived.Main", scope: null, file: !37, line: 22, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !63) +// CHECK:STDOUT: !61 = !DILocalVariable(arg: 1, scope: !60, type: !40) +// CHECK:STDOUT: !62 = !DILocation(line: 22, column: 1, scope: !60) +// CHECK:STDOUT: !63 = !{!61} +// CHECK:STDOUT: !64 = distinct !DISubprogram(name: "Op", linkageName: "_COp.0a0b9df20a60c6f6:core.Destroy.Core", scope: null, file: !37, line: 22, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !67) +// CHECK:STDOUT: !65 = !DILocalVariable(arg: 1, scope: !64, type: !40) +// CHECK:STDOUT: !66 = !DILocation(line: 22, column: 1, scope: !64) +// CHECK:STDOUT: !67 = !{!65} +// CHECK:STDOUT: !68 = distinct !DISubprogram(name: "Op", linkageName: "_COp.b25525d21a9bd472:core.Destroy.Core", scope: null, file: !37, line: 22, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !71) +// CHECK:STDOUT: !69 = !DILocalVariable(arg: 1, scope: !68, type: !40) +// CHECK:STDOUT: !70 = !DILocation(line: 22, column: 1, scope: !68) +// CHECK:STDOUT: !71 = !{!69} +// CHECK:STDOUT: !72 = distinct !DISubprogram(name: "func__carbon_thunk", linkageName: "_Cfunc__carbon_thunk.Derived.Main", scope: null, file: !37, line: 26, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !75) +// CHECK:STDOUT: !73 = !DILocalVariable(arg: 1, scope: !72, type: !40) +// CHECK:STDOUT: !74 = !DILocation(line: 26, column: 3, scope: !72) +// CHECK:STDOUT: !75 = !{!73} +// CHECK:STDOUT: !76 = distinct !DISubprogram(name: "other_func__carbon_thunk", linkageName: "_Cother_func__carbon_thunk.Derived.Main", scope: null, file: !37, line: 24, type: !42, spFlags: DISPFlagDefinition, unit: !38, retainedNodes: !79) +// CHECK:STDOUT: !77 = !DILocalVariable(arg: 1, scope: !76, type: !40) +// CHECK:STDOUT: !78 = !DILocation(line: 24, column: 3, scope: !76) +// CHECK:STDOUT: !79 = !{!77} +// CHECK:STDOUT: !80 = distinct !DISubprogram(name: "DoThing", linkageName: "_CDoThing.Main", scope: null, file: !37, line: 30, type: !44, spFlags: DISPFlagDefinition, unit: !38) +// CHECK:STDOUT: !81 = !DILocation(line: 31, column: 3, scope: !80) +// CHECK:STDOUT: !82 = !DILocation(line: 31, column: 20, scope: !80) +// CHECK:STDOUT: !83 = !DILocation(line: 31, column: 29, scope: !80) +// CHECK:STDOUT: !86 = !DILocation(line: 32, column: 11, scope: !80) +// CHECK:STDOUT: !87 = !DILocation(line: 32, column: 3, scope: !80) +// CHECK:STDOUT: !88 = !DILocation(line: 30, column: 1, scope: !80) // CHECK:STDOUT: !89 = !{!"vtable pointer", !0, i64 0} // CHECK:STDOUT: !90 = !{!89, !89, i64 0} // CHECK:STDOUT: !91 = !{!"p1 _ZTS11FurtherBase", !2, i64 0} diff --git a/toolchain/lower/testdata/interop/cpp/class/virtual_fn.carbon b/toolchain/lower/testdata/interop/cpp/class/virtual_fn.carbon index 664c64c29643..5488084f937f 100644 --- a/toolchain/lower/testdata/interop/cpp/class/virtual_fn.carbon +++ b/toolchain/lower/testdata/interop/cpp/class/virtual_fn.carbon @@ -204,41 +204,41 @@ void delete_new_Base() { // CHECK:STDOUT: ret void, !dbg !35 // CHECK:STDOUT: } // CHECK:STDOUT: -// CHECK:STDOUT: declare void @_CF.Base.Main(ptr) -// CHECK:STDOUT: // CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind -// CHECK:STDOUT: define weak_odr void @"_CF:thunk:A.Cpp:Base.Main"(ptr %self) #6 !dbg !37 { +// CHECK:STDOUT: define weak_odr void @"_C__destroy_thunk:thunk.Final.Main"(ptr %self) #6 !dbg !37 { // CHECK:STDOUT: entry: -// CHECK:STDOUT: call void @_CF.Base.Main(ptr %self), !dbg !40 -// CHECK:STDOUT: ret void, !dbg !40 -// CHECK:STDOUT: } -// CHECK:STDOUT: -// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind -// CHECK:STDOUT: define weak_odr void @"_C__destroy_thunk:thunk.Final.Main"(ptr %self) #6 !dbg !42 { -// CHECK:STDOUT: entry: -// CHECK:STDOUT: call void @"_COp.28387b086eba9957:core.Destroy.Core"(ptr %self), !dbg !44 -// CHECK:STDOUT: ret void, !dbg !44 +// CHECK:STDOUT: call void @"_COp.28387b086eba9957:core.Destroy.Core"(ptr %self), !dbg !39 +// CHECK:STDOUT: ret void, !dbg !39 // CHECK:STDOUT: } // CHECK:STDOUT: // CHECK:STDOUT: ; Function Attrs: nounwind // CHECK:STDOUT: declare void @_ZN1AD1Ev(ptr noundef nonnull align 8 dead_on_return(8) dereferenceable(8)) unnamed_addr #7 // CHECK:STDOUT: // CHECK:STDOUT: ; Function Attrs: nounwind -// CHECK:STDOUT: define weak_odr void @"_COp.e9cc9e95545cc62f:core.Destroy.Core"(ptr %self) #8 !dbg !46 { +// CHECK:STDOUT: define weak_odr void @"_COp.e9cc9e95545cc62f:core.Destroy.Core"(ptr %self) #8 !dbg !41 { // CHECK:STDOUT: entry: -// CHECK:STDOUT: ret void, !dbg !48 +// CHECK:STDOUT: ret void, !dbg !43 // CHECK:STDOUT: } // CHECK:STDOUT: // CHECK:STDOUT: ; Function Attrs: nounwind -// CHECK:STDOUT: define weak_odr void @"_COp.28387b086eba9957:core.Destroy.Core"(ptr %self) #8 !dbg !50 { +// CHECK:STDOUT: define weak_odr void @"_COp.28387b086eba9957:core.Destroy.Core"(ptr %self) #8 !dbg !45 { // CHECK:STDOUT: entry: -// CHECK:STDOUT: ret void, !dbg !52 +// CHECK:STDOUT: ret void, !dbg !47 // CHECK:STDOUT: } // CHECK:STDOUT: // CHECK:STDOUT: ; Function Attrs: nounwind -// CHECK:STDOUT: define void @_CF__carbon_thunk.Final.Main(ptr %self) #8 !dbg !54 { +// CHECK:STDOUT: define void @_CF__carbon_thunk.Final.Main(ptr %self) #8 !dbg !49 { // CHECK:STDOUT: entry: -// CHECK:STDOUT: call void @_CF.Final.Main(ptr %self), !dbg !56 +// CHECK:STDOUT: call void @_CF.Final.Main(ptr %self), !dbg !51 +// CHECK:STDOUT: ret void, !dbg !51 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: declare void @_CF.Base.Main(ptr) +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind +// CHECK:STDOUT: define weak_odr void @"_CF:thunk:A.Cpp:Base.Main"(ptr %self) #6 !dbg !53 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: call void @_CF.Base.Main(ptr %self), !dbg !56 // CHECK:STDOUT: ret void, !dbg !56 // CHECK:STDOUT: } // CHECK:STDOUT: @@ -377,26 +377,26 @@ void delete_new_Base() { // CHECK:STDOUT: !33 = !DILocalVariable(arg: 1, scope: !32, type: !29) // CHECK:STDOUT: !35 = !DILocation(line: 14, column: 3, scope: !32) // CHECK:STDOUT: !36 = !{!33} -// CHECK:STDOUT: !37 = distinct !DISubprogram(name: "F", linkageName: "_CF:thunk:A.Cpp:Base.Main", scope: null, file: !27, line: 19, type: !31, spFlags: DISPFlagDefinition, unit: !28, retainedNodes: !41) +// CHECK:STDOUT: !37 = distinct !DISubprogram(name: "__destroy_thunk", linkageName: "_C__destroy_thunk:thunk.Final.Main", scope: null, file: !27, line: 12, type: !31, spFlags: DISPFlagDefinition, unit: !28, retainedNodes: !40) // CHECK:STDOUT: !38 = !DILocalVariable(arg: 1, scope: !37, type: !29) -// CHECK:STDOUT: !40 = !DILocation(line: 19, column: 3, scope: !37) -// CHECK:STDOUT: !41 = !{!38} -// CHECK:STDOUT: !42 = distinct !DISubprogram(name: "__destroy_thunk", linkageName: "_C__destroy_thunk:thunk.Final.Main", scope: null, file: !27, line: 12, type: !31, spFlags: DISPFlagDefinition, unit: !28, retainedNodes: !45) -// CHECK:STDOUT: !43 = !DILocalVariable(arg: 1, scope: !42, type: !29) -// CHECK:STDOUT: !44 = !DILocation(line: 12, column: 1, scope: !42) -// CHECK:STDOUT: !45 = !{!43} -// CHECK:STDOUT: !46 = distinct !DISubprogram(name: "Op", linkageName: "_COp.e9cc9e95545cc62f:core.Destroy.Core", scope: null, file: !27, line: 12, type: !31, spFlags: DISPFlagDefinition, unit: !28, retainedNodes: !49) -// CHECK:STDOUT: !47 = !DILocalVariable(arg: 1, scope: !46, type: !29) -// CHECK:STDOUT: !48 = !DILocation(line: 12, column: 1, scope: !46) -// CHECK:STDOUT: !49 = !{!47} -// CHECK:STDOUT: !50 = distinct !DISubprogram(name: "Op", linkageName: "_COp.28387b086eba9957:core.Destroy.Core", scope: null, file: !27, line: 12, type: !31, spFlags: DISPFlagDefinition, unit: !28, retainedNodes: !53) -// CHECK:STDOUT: !51 = !DILocalVariable(arg: 1, scope: !50, type: !29) -// CHECK:STDOUT: !52 = !DILocation(line: 12, column: 1, scope: !50) -// CHECK:STDOUT: !53 = !{!51} -// CHECK:STDOUT: !54 = distinct !DISubprogram(name: "F__carbon_thunk", linkageName: "_CF__carbon_thunk.Final.Main", scope: null, file: !27, line: 14, type: !31, spFlags: DISPFlagDefinition, unit: !28, retainedNodes: !57) -// CHECK:STDOUT: !55 = !DILocalVariable(arg: 1, scope: !54, type: !29) -// CHECK:STDOUT: !56 = !DILocation(line: 14, column: 3, scope: !54) -// CHECK:STDOUT: !57 = !{!55} +// CHECK:STDOUT: !39 = !DILocation(line: 12, column: 1, scope: !37) +// CHECK:STDOUT: !40 = !{!38} +// CHECK:STDOUT: !41 = distinct !DISubprogram(name: "Op", linkageName: "_COp.e9cc9e95545cc62f:core.Destroy.Core", scope: null, file: !27, line: 12, type: !31, spFlags: DISPFlagDefinition, unit: !28, retainedNodes: !44) +// CHECK:STDOUT: !42 = !DILocalVariable(arg: 1, scope: !41, type: !29) +// CHECK:STDOUT: !43 = !DILocation(line: 12, column: 1, scope: !41) +// CHECK:STDOUT: !44 = !{!42} +// CHECK:STDOUT: !45 = distinct !DISubprogram(name: "Op", linkageName: "_COp.28387b086eba9957:core.Destroy.Core", scope: null, file: !27, line: 12, type: !31, spFlags: DISPFlagDefinition, unit: !28, retainedNodes: !48) +// CHECK:STDOUT: !46 = !DILocalVariable(arg: 1, scope: !45, type: !29) +// CHECK:STDOUT: !47 = !DILocation(line: 12, column: 1, scope: !45) +// CHECK:STDOUT: !48 = !{!46} +// CHECK:STDOUT: !49 = distinct !DISubprogram(name: "F__carbon_thunk", linkageName: "_CF__carbon_thunk.Final.Main", scope: null, file: !27, line: 14, type: !31, spFlags: DISPFlagDefinition, unit: !28, retainedNodes: !52) +// CHECK:STDOUT: !50 = !DILocalVariable(arg: 1, scope: !49, type: !29) +// CHECK:STDOUT: !51 = !DILocation(line: 14, column: 3, scope: !49) +// CHECK:STDOUT: !52 = !{!50} +// CHECK:STDOUT: !53 = distinct !DISubprogram(name: "F", linkageName: "_CF:thunk:A.Cpp:Base.Main", scope: null, file: !27, line: 19, type: !31, spFlags: DISPFlagDefinition, unit: !28, retainedNodes: !57) +// CHECK:STDOUT: !54 = !DILocalVariable(arg: 1, scope: !53, type: !29) +// CHECK:STDOUT: !56 = !DILocation(line: 19, column: 3, scope: !53) +// CHECK:STDOUT: !57 = !{!54} // CHECK:STDOUT: !58 = distinct !DISubprogram(name: "__destroy_thunk", linkageName: "_C__destroy_thunk:thunk.Base.Main", scope: null, file: !27, line: 17, type: !31, spFlags: DISPFlagDefinition, unit: !28, retainedNodes: !61) // CHECK:STDOUT: !59 = !DILocalVariable(arg: 1, scope: !58, type: !29) // CHECK:STDOUT: !60 = !DILocation(line: 17, column: 1, scope: !58) diff --git a/toolchain/lower/testdata/interop/cpp/class/virtual_fn_carbon_only.carbon b/toolchain/lower/testdata/interop/cpp/class/virtual_fn_carbon_only.carbon new file mode 100644 index 000000000000..42e1d23d3197 --- /dev/null +++ b/toolchain/lower/testdata/interop/cpp/class/virtual_fn_carbon_only.carbon @@ -0,0 +1,217 @@ +// Part of the Carbon Language project, under the Apache License v2.0 with LLVM +// Exceptions. See /LICENSE for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/destroy.carbon +// EXTRA-ARGS: --clang-arg=-fno-exceptions +// +// AUTOUPDATE +// TIP: To test this file alone, run: +// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/interop/cpp/class/virtual_fn_carbon_only.carbon +// TIP: To dump output, run: +// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/class/virtual_fn_carbon_only.carbon + +import Cpp inline ''' +struct X { virtual void f() {} }; +'''; + +class Z { + extend base: Cpp.X; + override fn f(unused self) {} +} + +fn F() { + var _: Z = {.base = Cpp.X.X()}; +} + +// CHECK:STDOUT: ; --- +// CHECK:STDOUT: ; ModuleID = 'virtual_fn_carbon_only.carbon' +// CHECK:STDOUT: source_filename = "virtual_fn_carbon_only.carbon" +// CHECK:STDOUT: target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128" +// CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu" +// CHECK:STDOUT: +// CHECK:STDOUT: $_ZN1X1fEv = comdat any +// CHECK:STDOUT: +// CHECK:STDOUT: $_ZN1XC2Ev = comdat any +// CHECK:STDOUT: +// CHECK:STDOUT: $_ZTV1X = comdat any +// CHECK:STDOUT: +// CHECK:STDOUT: $_ZTVN6Carbon1ZE = comdat any +// CHECK:STDOUT: +// CHECK:STDOUT: $_ZTI1X = comdat any +// CHECK:STDOUT: +// CHECK:STDOUT: $_ZTS1X = comdat any +// CHECK:STDOUT: +// CHECK:STDOUT: $_ZTIN6Carbon1ZE = comdat any +// CHECK:STDOUT: +// CHECK:STDOUT: $_ZTSN6Carbon1ZE = comdat any +// CHECK:STDOUT: +// CHECK:STDOUT: @_ZTV1X = linkonce_odr dso_local constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTI1X, ptr @_ZN1X1fEv] }, comdat, align 8 +// CHECK:STDOUT: @_ZTVN6Carbon1ZE = linkonce_odr dso_local constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTIN6Carbon1ZE, ptr @_ZN6Carbon1Z1fEv] }, comdat, align 8 +// CHECK:STDOUT: @_ZTI1X = linkonce_odr dso_local constant { ptr, ptr } { ptr getelementptr inbounds (ptr, ptr @_ZTVN10__cxxabiv117__class_type_infoE, i64 2), ptr @_ZTS1X }, comdat, align 8 +// CHECK:STDOUT: @_ZTVN10__cxxabiv117__class_type_infoE = external global [0 x ptr] +// CHECK:STDOUT: @_ZTS1X = linkonce_odr dso_local constant [3 x i8] c"1X\00", comdat, align 1 +// CHECK:STDOUT: @_ZTIN6Carbon1ZE = linkonce_odr dso_local constant { ptr, ptr, ptr } { ptr getelementptr inbounds (ptr, ptr @_ZTVN10__cxxabiv120__si_class_type_infoE, i64 2), ptr @_ZTSN6Carbon1ZE, ptr @_ZTI1X }, comdat, align 8 +// CHECK:STDOUT: @_ZTVN10__cxxabiv120__si_class_type_infoE = external global [0 x ptr] +// CHECK:STDOUT: @_ZTSN6Carbon1ZE = linkonce_odr dso_local constant [12 x i8] c"N6Carbon1ZE\00", comdat, align 1 +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: mustprogress nounwind uwtable +// CHECK:STDOUT: define linkonce_odr dso_local void @_ZN1X1fEv(ptr noundef nonnull align 8 dereferenceable(8) %this) unnamed_addr #0 comdat align 2 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: %this.addr = alloca ptr, align 8 +// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !49 +// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8 +// CHECK:STDOUT: ret void +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: nounwind +// CHECK:STDOUT: define void @_Cf.Z.Main(ptr %self) #1 !dbg !13 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: ret void, !dbg !16 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind +// CHECK:STDOUT: define weak_odr void @"_Cf:thunk:X.Cpp:Z.Main"(ptr %self) #2 !dbg !18 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: call void @_Cf.Z.Main(ptr %self), !dbg !21 +// CHECK:STDOUT: ret void, !dbg !21 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind +// CHECK:STDOUT: define weak_odr void @"_C__destroy_thunk:thunk.Z.Main"(ptr %self) #2 !dbg !23 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: call void @"_COp.680f7fa3ef86df7a:core.Destroy.Core"(ptr %self), !dbg !25 +// CHECK:STDOUT: ret void, !dbg !25 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: nounwind +// CHECK:STDOUT: define weak_odr void @"_COp.de73a19002e400c9:core.Destroy.Core"(ptr %self) #1 !dbg !27 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: ret void, !dbg !29 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: nounwind +// CHECK:STDOUT: define weak_odr void @"_COp.680f7fa3ef86df7a:core.Destroy.Core"(ptr %self) #1 !dbg !31 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: ret void, !dbg !33 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: nounwind +// CHECK:STDOUT: define void @_Cf__carbon_thunk.Z.Main(ptr %self) #1 !dbg !35 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: call void @_Cf.Z.Main(ptr %self), !dbg !37 +// CHECK:STDOUT: ret void, !dbg !37 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: nounwind +// CHECK:STDOUT: define void @_CF.Main() #1 !dbg !39 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: %_.var = alloca { [8 x i8] }, align 8, !dbg !40 +// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var), !dbg !40 +// CHECK:STDOUT: %.loc24_32.1.base = getelementptr inbounds nuw { [8 x i8] }, ptr %_.var, i32 0, i32 0, !dbg !41 +// CHECK:STDOUT: call void @_ZN1XC1Ev.carbon_thunk.(ptr %.loc24_32.1.base), !dbg !42 +// CHECK:STDOUT: %.loc24_32.7.base = getelementptr inbounds nuw { [8 x i8] }, ptr %_.var, i32 0, i32 0, !dbg !41 +// CHECK:STDOUT: %.loc24_32.8.vptr = getelementptr inbounds nuw [8 x i8], ptr %.loc24_32.7.base, i32 0, i32 0, !dbg !41 +// CHECK:STDOUT: store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTVN6Carbon1ZE, i32 0, i32 0, i32 2), ptr %.loc24_32.8.vptr, align 8, !dbg !41 +// CHECK:STDOUT: call void @"_COp.680f7fa3ef86df7a:core.Destroy.Core"(ptr %_.var), !dbg !40 +// CHECK:STDOUT: ret void, !dbg !44 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable +// CHECK:STDOUT: define internal void @_ZN1XC1Ev.carbon_thunk.(ptr noundef %return) #3 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: %return.addr = alloca ptr, align 8 +// CHECK:STDOUT: store ptr %return, ptr %return.addr, align 8, !tbaa !49 +// CHECK:STDOUT: %0 = load ptr, ptr %return.addr, align 8, !tbaa !49 +// CHECK:STDOUT: call void @_ZN1XC2Ev(ptr noundef nonnull align 8 dereferenceable(8) %0) #1 +// CHECK:STDOUT: ret void +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) +// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #4 +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable +// CHECK:STDOUT: define internal void @_ZN6Carbon1Z1fEv(ptr noundef nonnull align 8 dereferenceable(8) %this) unnamed_addr #3 align 2 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: %this.addr = alloca ptr, align 8 +// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !53 +// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8 +// CHECK:STDOUT: call void @_Cf__carbon_thunk.Z.Main(ptr noundef nonnull align 8 dereferenceable(8) %this1) +// CHECK:STDOUT: ret void +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: inlinehint mustprogress nounwind uwtable +// CHECK:STDOUT: define linkonce_odr dso_local void @_ZN1XC2Ev(ptr noundef nonnull align 8 dereferenceable(8) %this) unnamed_addr #5 comdat align 2 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: %this.addr = alloca ptr, align 8 +// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !49 +// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8 +// CHECK:STDOUT: store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTV1X, i32 0, i32 0, i32 2), ptr %this1, align 8, !tbaa !51 +// CHECK:STDOUT: ret void +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: attributes #0 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } +// CHECK:STDOUT: attributes #1 = { nounwind } +// CHECK:STDOUT: attributes #2 = { alwaysinline nounwind } +// CHECK:STDOUT: attributes #3 = { alwaysinline mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } +// CHECK:STDOUT: attributes #4 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) } +// CHECK:STDOUT: attributes #5 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } +// CHECK:STDOUT: +// CHECK:STDOUT: !llvm.dbg.cu = !{!7} +// CHECK:STDOUT: !llvm.module.flags = !{!56, !57, !58, !2, !3} +// CHECK:STDOUT: !llvm.errno.tbaa = !{!61} +// CHECK:STDOUT: +// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5} +// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3} +// CHECK:STDOUT: !6 = !DIFile(filename: "virtual_fn_carbon_only.carbon", directory: "") +// CHECK:STDOUT: !7 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug) +// CHECK:STDOUT: !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64) +// CHECK:STDOUT: !9 = !{null, !8} +// CHECK:STDOUT: !10 = !DISubroutineType(types: !9) +// CHECK:STDOUT: !11 = !{null} +// CHECK:STDOUT: !12 = !DISubroutineType(types: !11) +// CHECK:STDOUT: !13 = distinct !DISubprogram(name: "f", linkageName: "_Cf.Z.Main", scope: null, file: !6, line: 20, type: !10, spFlags: DISPFlagDefinition, unit: !7, retainedNodes: !17) +// CHECK:STDOUT: !14 = !DILocalVariable(arg: 1, scope: !13, type: !8) +// CHECK:STDOUT: !16 = !DILocation(line: 20, column: 3, scope: !13) +// CHECK:STDOUT: !17 = !{!14} +// CHECK:STDOUT: !18 = distinct !DISubprogram(name: "f", linkageName: "_Cf:thunk:X.Cpp:Z.Main", scope: null, file: !6, line: 20, type: !10, spFlags: DISPFlagDefinition, unit: !7, retainedNodes: !22) +// CHECK:STDOUT: !19 = !DILocalVariable(arg: 1, scope: !18, type: !8) +// CHECK:STDOUT: !21 = !DILocation(line: 20, column: 3, scope: !18) +// CHECK:STDOUT: !22 = !{!19} +// CHECK:STDOUT: !23 = distinct !DISubprogram(name: "__destroy_thunk", linkageName: "_C__destroy_thunk:thunk.Z.Main", scope: null, file: !6, line: 18, type: !10, spFlags: DISPFlagDefinition, unit: !7, retainedNodes: !26) +// CHECK:STDOUT: !24 = !DILocalVariable(arg: 1, scope: !23, type: !8) +// CHECK:STDOUT: !25 = !DILocation(line: 18, column: 1, scope: !23) +// CHECK:STDOUT: !26 = !{!24} +// CHECK:STDOUT: !27 = distinct !DISubprogram(name: "Op", linkageName: "_COp.de73a19002e400c9:core.Destroy.Core", scope: null, file: !6, line: 18, type: !10, spFlags: DISPFlagDefinition, unit: !7, retainedNodes: !30) +// CHECK:STDOUT: !28 = !DILocalVariable(arg: 1, scope: !27, type: !8) +// CHECK:STDOUT: !29 = !DILocation(line: 18, column: 1, scope: !27) +// CHECK:STDOUT: !30 = !{!28} +// CHECK:STDOUT: !31 = distinct !DISubprogram(name: "Op", linkageName: "_COp.680f7fa3ef86df7a:core.Destroy.Core", scope: null, file: !6, line: 18, type: !10, spFlags: DISPFlagDefinition, unit: !7, retainedNodes: !34) +// CHECK:STDOUT: !32 = !DILocalVariable(arg: 1, scope: !31, type: !8) +// CHECK:STDOUT: !33 = !DILocation(line: 18, column: 1, scope: !31) +// CHECK:STDOUT: !34 = !{!32} +// CHECK:STDOUT: !35 = distinct !DISubprogram(name: "f__carbon_thunk", linkageName: "_Cf__carbon_thunk.Z.Main", scope: null, file: !6, line: 20, type: !10, spFlags: DISPFlagDefinition, unit: !7, retainedNodes: !38) +// CHECK:STDOUT: !36 = !DILocalVariable(arg: 1, scope: !35, type: !8) +// CHECK:STDOUT: !37 = !DILocation(line: 20, column: 3, scope: !35) +// CHECK:STDOUT: !38 = !{!36} +// CHECK:STDOUT: !39 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !6, line: 23, type: !12, spFlags: DISPFlagDefinition, unit: !7) +// CHECK:STDOUT: !40 = !DILocation(line: 24, column: 3, scope: !39) +// CHECK:STDOUT: !41 = !DILocation(line: 24, column: 14, scope: !39) +// CHECK:STDOUT: !42 = !DILocation(line: 24, column: 23, scope: !39) +// CHECK:STDOUT: !44 = !DILocation(line: 23, column: 1, scope: !39) +// CHECK:STDOUT: !45 = !{!"Simple C++ TBAA"} +// CHECK:STDOUT: !46 = !{!"omnipotent char", !45, i64 0} +// CHECK:STDOUT: !47 = !{!"any pointer", !46, i64 0} +// CHECK:STDOUT: !48 = !{!"p1 _ZTS1X", !47, i64 0} +// CHECK:STDOUT: !49 = !{!48, !48, i64 0} +// CHECK:STDOUT: !50 = !{!"vtable pointer", !45, i64 0} +// CHECK:STDOUT: !51 = !{!50, !50, i64 0} +// CHECK:STDOUT: !52 = !{!"p1 _ZTSN6Carbon1ZE", !47, i64 0} +// CHECK:STDOUT: !53 = !{!52, !52, i64 0} +// CHECK:STDOUT: !56 = !{i32 8, !"PIC Level", i32 2} +// CHECK:STDOUT: !57 = !{i32 7, !"PIE Level", i32 2} +// CHECK:STDOUT: !58 = !{i32 7, !"uwtable", i32 2} +// CHECK:STDOUT: !59 = !{!"int", !46, i64 0} +// CHECK:STDOUT: !60 = !{!"__libc_errno", !59, i64 0} +// CHECK:STDOUT: !61 = !{!60, !59, i64 0} +// CHECK:STDOUT: