toolchain/lower/testdata/interop/cpp/class/export/generic.carbon - trunk - githubmirror/carbon-lang

toolchain/lower/testdata/interop/cpp/class/export/generic.carbon
109 строк5 KB
Nicholas Bishop
Add initial support for exporting generic classes (#7595)
10 авг 2026, 20:47
10 авг 2026, 20:47de1cd70
// 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/class/export/generic.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/class/export/generic.carbon

// --- generic_class.carbon
library "[[@TEST_NAME]]";
import Cpp;

class C(T: type) {
  var t: T;
}

inline Cpp '''
class A {};
class B {};

void F() {
  Carbon::C<A> c1;
  c1.t = A();
  Carbon::C<B> c2;
  c2.t = B();
}
''';

fn Run() {
  Cpp.F();
}

// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'generic_class.carbon'
// CHECK:STDOUT: source_filename = "generic_class.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: %"class.Carbon::C" = type {}
// CHECK:STDOUT: %class.A = type { i8 }
// CHECK:STDOUT: %"class.Carbon::C.0" = type {}
// CHECK:STDOUT: %class.B = type { i8 }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: mustprogress nounwind uwtable
// CHECK:STDOUT: define dso_local void @_Z1Fv() #0 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   %c1 = alloca %"class.Carbon::C", align 1
// CHECK:STDOUT:   %ref.tmp = alloca %class.A, align 1
// CHECK:STDOUT:   %c2 = alloca %"class.Carbon::C.0", align 1
// CHECK:STDOUT:   %ref.tmp1 = alloca %class.B, align 1
// CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %c1) #2
// CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %ref.tmp) #2
// CHECK:STDOUT:   call void @llvm.lifetime.end.p0(ptr %ref.tmp) #2
// CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %c2) #2
// CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %ref.tmp1) #2
// CHECK:STDOUT:   call void @llvm.lifetime.end.p0(ptr %ref.tmp1) #2
// CHECK:STDOUT:   call void @llvm.lifetime.end.p0(ptr %c2) #2
// CHECK:STDOUT:   call void @llvm.lifetime.end.p0(ptr %c1) #2
// 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)) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.lifetime.end.p0(ptr captures(none)) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @main() #2 !dbg !12 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   call void @_Z1Fv(), !dbg !16
// CHECK:STDOUT:   ret i32 0, !dbg !17
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 3, 2, 1, 0 }
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.end.p0, { 3, 2, 1, 0 }
// 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #2 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!0}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3, !4, !5, !6}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!7}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !1 = !DIFile(filename: "generic_class.carbon", directory: "")
// CHECK:STDOUT: !2 = !{i32 8, !"PIC Level", i32 2}
// CHECK:STDOUT: !3 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !4 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !5 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !6 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !7 = !{!8, !9, i64 0}
// CHECK:STDOUT: !8 = !{!"__libc_errno", !9, i64 0}
// CHECK:STDOUT: !9 = !{!"int", !10, i64 0}
// CHECK:STDOUT: !10 = !{!"omnipotent char", !11, i64 0}
// CHECK:STDOUT: !11 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !12 = distinct !DISubprogram(name: "Run", linkageName: "main", scope: null, file: !1, line: 20, type: !13, spFlags: DISPFlagDefinition, unit: !0)
// CHECK:STDOUT: !13 = !DISubroutineType(types: !14)
// CHECK:STDOUT: !14 = !{!15}
// CHECK:STDOUT: !15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !16 = !DILocation(line: 21, column: 3, scope: !12)
// CHECK:STDOUT: !17 = !DILocation(line: 20, column: 1, scope: !12)
// CHECK:STDOUT: