diff --git a/toolchain/check/import_cpp.cpp b/toolchain/check/import_cpp.cpp index 8142d9454d96..f0b8ee526800 100644 --- a/toolchain/check/import_cpp.cpp +++ b/toolchain/check/import_cpp.cpp @@ -1073,7 +1073,8 @@ static auto ImportFunctionDecl(Context& context, SemIR::LocId loc_id, MarkFailedDecl(context, clang_decl); return SemIR::ErrorInst::InstId; } - if (clang_decl->getTemplatedKind() != clang::FunctionDecl::TK_NonTemplate) { + if (clang_decl->getTemplatedKind() == + clang::FunctionDecl::TK_FunctionTemplate) { context.TODO(loc_id, "Unsupported: Template function"); MarkFailedDecl(context, clang_decl); return SemIR::ErrorInst::InstId; diff --git a/toolchain/check/testdata/interop/cpp/function/in_template.carbon b/toolchain/check/testdata/interop/cpp/function/in_template.carbon new file mode 100644 index 000000000000..64fe7f2890d6 --- /dev/null +++ b/toolchain/check/testdata/interop/cpp/function/in_template.carbon @@ -0,0 +1,94 @@ +// 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/int.carbon +// +// AUTOUPDATE +// TIP: To test this file alone, run: +// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/function/in_template.carbon +// TIP: To dump output, run: +// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/function/in_template.carbon + +// --- class_template.h + +template struct X { + static void f(T t); +}; + +// TODO: We should be able to instantiate the class when needed. +template struct X; + +using Y = X; + +// --- use_class_template.carbon + +library "[[@TEST_NAME]]"; + +import Cpp library "class_template.h"; + +fn F() { + //@dump-sem-ir-begin + Cpp.Y.f(42); + //@dump-sem-ir-end +} + +// CHECK:STDOUT: --- use_class_template.carbon +// CHECK:STDOUT: +// CHECK:STDOUT: constants { +// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete] +// CHECK:STDOUT: %X: type = class_type @X [concrete] +// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete] +// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete] +// CHECK:STDOUT: %f.type: type = fn_type @f [concrete] +// CHECK:STDOUT: %f: %f.type = struct_value () [concrete] +// CHECK:STDOUT: %int_42.20e: Core.IntLiteral = int_value 42 [concrete] +// CHECK:STDOUT: %ImplicitAs.type.205: type = facet_type <@ImplicitAs, @ImplicitAs(%i32)> [concrete] +// CHECK:STDOUT: %Convert.type.1b6: type = fn_type @Convert.1, @ImplicitAs(%i32) [concrete] +// CHECK:STDOUT: %To: Core.IntLiteral = bind_symbolic_name To, 0 [symbolic] +// CHECK:STDOUT: %Convert.type.0f9: type = fn_type @Convert.2, @ImplicitAs.impl.4f9(%To) [symbolic] +// CHECK:STDOUT: %Convert.f06: %Convert.type.0f9 = struct_value () [symbolic] +// CHECK:STDOUT: %ImplicitAs.impl_witness.c75: = impl_witness imports.%ImplicitAs.impl_witness_table.a2f, @ImplicitAs.impl.4f9(%int_32) [concrete] +// CHECK:STDOUT: %Convert.type.035: type = fn_type @Convert.2, @ImplicitAs.impl.4f9(%int_32) [concrete] +// CHECK:STDOUT: %Convert.956: %Convert.type.035 = struct_value () [concrete] +// CHECK:STDOUT: %ImplicitAs.facet: %ImplicitAs.type.205 = facet_value Core.IntLiteral, (%ImplicitAs.impl_witness.c75) [concrete] +// CHECK:STDOUT: %.9c3: type = fn_type_with_self_type %Convert.type.1b6, %ImplicitAs.facet [concrete] +// CHECK:STDOUT: %Convert.bound: = bound_method %int_42.20e, %Convert.956 [concrete] +// CHECK:STDOUT: %Convert.specific_fn: = specific_function %Convert.956, @Convert.2(%int_32) [concrete] +// CHECK:STDOUT: %bound_method: = bound_method %int_42.20e, %Convert.specific_fn [concrete] +// CHECK:STDOUT: %int_42.c68: %i32 = int_value 42 [concrete] +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: imports { +// CHECK:STDOUT: %Cpp: = namespace file.%Cpp.import_cpp, [concrete] { +// CHECK:STDOUT: .Y = %X.decl +// CHECK:STDOUT: import Cpp//... +// CHECK:STDOUT: } +// CHECK:STDOUT: %X.decl: type = class_decl @X [concrete = constants.%X] {} {} +// CHECK:STDOUT: %f.decl: %f.type = fn_decl @f [concrete = constants.%f] { +// CHECK:STDOUT: +// CHECK:STDOUT: } { +// CHECK:STDOUT: +// CHECK:STDOUT: } +// CHECK:STDOUT: %Core.import_ref.a5b: @ImplicitAs.impl.4f9.%Convert.type (%Convert.type.0f9) = import_ref Core//prelude/parts/int, loc16_39, loaded [symbolic = @ImplicitAs.impl.4f9.%Convert (constants.%Convert.f06)] +// CHECK:STDOUT: %ImplicitAs.impl_witness_table.a2f = impl_witness_table (%Core.import_ref.a5b), @ImplicitAs.impl.4f9 [concrete] +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: fn @F() { +// CHECK:STDOUT: !entry: +// CHECK:STDOUT: %Cpp.ref: = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp] +// CHECK:STDOUT: +// CHECK:STDOUT: %Y.ref: type = name_ref Y, imports.%X.decl [concrete = constants.%X] +// CHECK:STDOUT: %f.ref: %f.type = name_ref f, imports.%f.decl [concrete = constants.%f] +// CHECK:STDOUT: %int_42: Core.IntLiteral = int_value 42 [concrete = constants.%int_42.20e] +// CHECK:STDOUT: %impl.elem0: %.9c3 = impl_witness_access constants.%ImplicitAs.impl_witness.c75, element0 [concrete = constants.%Convert.956] +// CHECK:STDOUT: %bound_method.loc8_11.1: = bound_method %int_42, %impl.elem0 [concrete = constants.%Convert.bound] +// CHECK:STDOUT: %specific_fn: = specific_function %impl.elem0, @Convert.2(constants.%int_32) [concrete = constants.%Convert.specific_fn] +// CHECK:STDOUT: %bound_method.loc8_11.2: = bound_method %int_42, %specific_fn [concrete = constants.%bound_method] +// CHECK:STDOUT: %int.convert_checked: init %i32 = call %bound_method.loc8_11.2(%int_42) [concrete = constants.%int_42.c68] +// CHECK:STDOUT: %.loc8_11.1: %i32 = value_of_initializer %int.convert_checked [concrete = constants.%int_42.c68] +// CHECK:STDOUT: %.loc8_11.2: %i32 = converted %int_42, %.loc8_11.1 [concrete = constants.%int_42.c68] +// CHECK:STDOUT: %f.call: init %empty_tuple.type = call %f.ref(%.loc8_11.2) +// CHECK:STDOUT: +// CHECK:STDOUT: } +// CHECK:STDOUT: diff --git a/toolchain/lower/testdata/interop/cpp/function_in_template.carbon b/toolchain/lower/testdata/interop/cpp/function_in_template.carbon new file mode 100644 index 000000000000..5cfc5df2fb2a --- /dev/null +++ b/toolchain/lower/testdata/interop/cpp/function_in_template.carbon @@ -0,0 +1,73 @@ +// 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/int.carbon +// +// AUTOUPDATE +// TIP: To test this file alone, run: +// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/interop/cpp/function_in_template.carbon +// TIP: To dump output, run: +// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/function_in_template.carbon + +// --- class_template.h + +template struct X { + static void f(T t) {} +}; + +// TODO: We should be able to instantiate the class and function when needed. +template struct X; + +using Y = X; + +// --- use_class_template.carbon + +library "[[@TEST_NAME]]"; + +import Cpp library "class_template.h"; + +fn F() { + //@dump-sem-ir-begin + Cpp.Y.f(42); + //@dump-sem-ir-end +} + +// CHECK:STDOUT: ; ModuleID = 'use_class_template.carbon' +// CHECK:STDOUT: source_filename = "use_class_template.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: $_ZN1XIiE1fEi = comdat any +// CHECK:STDOUT: +// CHECK:STDOUT: define void @_CF.Main() !dbg !7 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: call void @_ZN1XIiE1fEi(i32 42), !dbg !10 +// CHECK:STDOUT: ret void, !dbg !11 +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: ; Function Attrs: mustprogress noinline nounwind optnone +// CHECK:STDOUT: define weak_odr dso_local void @_ZN1XIiE1fEi(i32 %t) #0 comdat align 2 { +// CHECK:STDOUT: entry: +// CHECK:STDOUT: %t.addr = alloca i32, align 4 +// CHECK:STDOUT: store i32 %t, ptr %t.addr, align 4 +// CHECK:STDOUT: ret void +// CHECK:STDOUT: } +// CHECK:STDOUT: +// CHECK:STDOUT: attributes #0 = { mustprogress noinline nounwind optnone "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="0" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } +// CHECK:STDOUT: +// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4} +// CHECK:STDOUT: !llvm.dbg.cu = !{!5} +// CHECK:STDOUT: +// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5} +// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3} +// CHECK:STDOUT: !2 = !{i32 1, !"wchar_size", i32 4} +// CHECK:STDOUT: !3 = !{i32 8, !"PIC Level", i32 0} +// CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2} +// CHECK:STDOUT: !5 = distinct !DICompileUnit(language: DW_LANG_C, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug) +// CHECK:STDOUT: !6 = !DIFile(filename: "use_class_template.carbon", directory: "") +// CHECK:STDOUT: !7 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !6, line: 6, type: !8, spFlags: DISPFlagDefinition, unit: !5) +// CHECK:STDOUT: !8 = !DISubroutineType(types: !9) +// CHECK:STDOUT: !9 = !{} +// CHECK:STDOUT: !10 = !DILocation(line: 8, column: 3, scope: !7) +// CHECK:STDOUT: !11 = !DILocation(line: 6, column: 1, scope: !7)