mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-05 22:02:55 +01:00
Superficial support for exporting complete class types to C++. (#7029)
We don't yet populate the bases or fields, so the class types show up as empty classes in C++ for now. But we do allow calls to static member functions.
This commit is contained in:
Richard Smith
@@ -0,0 +1,84 @@
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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/int.carbon
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/interop/cpp/reverse/class.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/reverse/class.carbon
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// --- pointer.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class A {
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var x: i32;
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var y: i32;
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}
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inline Cpp '''
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Carbon::A *pass(Carbon::A *p) { return p; }
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void call() { pass(nullptr); }
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''';
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fn DoIt() { Cpp.call(); }
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// CHECK:STDOUT: ; ModuleID = 'pointer.carbon'
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// CHECK:STDOUT: source_filename = "pointer.carbon"
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// 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"
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// CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: mustprogress nounwind uwtable
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// CHECK:STDOUT: define dso_local noundef ptr @_Z4passPN6Carbon1AE(ptr noundef %p) #0 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %p.addr = alloca ptr, align 8
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// CHECK:STDOUT: store ptr %p, ptr %p.addr, align 8, !tbaa !11
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// CHECK:STDOUT: %0 = load ptr, ptr %p.addr, align 8, !tbaa !11
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// CHECK:STDOUT: ret ptr %0
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: mustprogress nounwind uwtable
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// CHECK:STDOUT: define dso_local void @_Z4callv() #0 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %call = call noundef ptr @_Z4passPN6Carbon1AE(ptr noundef null)
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// CHECK:STDOUT: ret void
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: nounwind
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// CHECK:STDOUT: define void @_CDoIt.Main() #1 !dbg !14 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_Z4callv(), !dbg !17
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// CHECK:STDOUT: ret void, !dbg !18
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// 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" }
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// CHECK:STDOUT: attributes #1 = { nounwind }
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// CHECK:STDOUT:
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// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4}
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// CHECK:STDOUT: !llvm.dbg.cu = !{!5}
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// CHECK:STDOUT: !llvm.errno.tbaa = !{!7}
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// CHECK:STDOUT:
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// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
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// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
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// CHECK:STDOUT: !2 = !{i32 8, !"PIC Level", i32 2}
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// CHECK:STDOUT: !3 = !{i32 7, !"PIE Level", i32 2}
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// CHECK:STDOUT: !4 = !{i32 7, !"uwtable", i32 2}
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// CHECK:STDOUT: !5 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
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// CHECK:STDOUT: !6 = !DIFile(filename: "pointer.carbon", directory: "")
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// CHECK:STDOUT: !7 = !{!8, !8, i64 0}
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// CHECK:STDOUT: !8 = !{!"int", !9, i64 0}
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// CHECK:STDOUT: !9 = !{!"omnipotent char", !10, i64 0}
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// CHECK:STDOUT: !10 = !{!"Simple C++ TBAA"}
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// CHECK:STDOUT: !11 = !{!12, !12, i64 0}
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// CHECK:STDOUT: !12 = !{!"p1 _ZTSN6Carbon1AE", !13, i64 0}
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// CHECK:STDOUT: !13 = !{!"any pointer", !9, i64 0}
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// CHECK:STDOUT: !14 = distinct !DISubprogram(name: "DoIt", linkageName: "_CDoIt.Main", scope: null, file: !6, line: 16, type: !15, spFlags: DISPFlagDefinition, unit: !5)
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// CHECK:STDOUT: !15 = !DISubroutineType(types: !16)
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// CHECK:STDOUT: !16 = !{null}
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// CHECK:STDOUT: !17 = !DILocation(line: 16, column: 13, scope: !14)
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// CHECK:STDOUT: !18 = !DILocation(line: 16, column: 1, scope: !14)
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+10
-10
@@ -124,22 +124,22 @@ fn H() { Cpp.G2(); }
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// CHECK:STDOUT: ; Function Attrs: mustprogress uwtable
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// CHECK:STDOUT: define dso_local void @_Z1Gv() #0 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_ZL17NoArgs__cpp_thunkv()
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// CHECK:STDOUT: call void @_ZL18BoolArg__cpp_thunkb(i1 noundef zeroext true)
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// CHECK:STDOUT: call void @_ZL17IntArg__cpp_thunki(i32 noundef 123)
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// CHECK:STDOUT: call void @_ZL19FloatArg__cpp_thunkf(float noundef 1.500000e+00)
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// CHECK:STDOUT: call void @_ZN6Carbon5OtherL17NoArgs__cpp_thunkEv()
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// CHECK:STDOUT: call void @_ZN6Carbon5OtherL18BoolArg__cpp_thunkEb(i1 noundef zeroext true)
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// CHECK:STDOUT: call void @_ZN6Carbon5OtherL17IntArg__cpp_thunkEi(i32 noundef 123)
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// CHECK:STDOUT: call void @_ZN6Carbon5OtherL19FloatArg__cpp_thunkEf(float noundef 1.500000e+00)
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// CHECK:STDOUT: ret void
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
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// CHECK:STDOUT: define internal void @_ZL17NoArgs__cpp_thunkv() #1 {
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// CHECK:STDOUT: define internal void @_ZN6Carbon5OtherL17NoArgs__cpp_thunkEv() #1 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_CNoArgs__carbon_thunk.Other()
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// CHECK:STDOUT: ret void
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
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// CHECK:STDOUT: define internal void @_ZL18BoolArg__cpp_thunkb(i1 noundef zeroext %0) #1 {
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// CHECK:STDOUT: define internal void @_ZN6Carbon5OtherL18BoolArg__cpp_thunkEb(i1 noundef zeroext %0) #1 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %.addr = alloca i8, align 1
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// CHECK:STDOUT: %storedv = zext i1 %0 to i8
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@@ -149,7 +149,7 @@ fn H() { Cpp.G2(); }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
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// CHECK:STDOUT: define internal void @_ZL17IntArg__cpp_thunki(i32 noundef %0) #1 {
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// CHECK:STDOUT: define internal void @_ZN6Carbon5OtherL17IntArg__cpp_thunkEi(i32 noundef %0) #1 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %.addr = alloca i32, align 4
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// CHECK:STDOUT: store i32 %0, ptr %.addr, align 4, !tbaa !7
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@@ -158,7 +158,7 @@ fn H() { Cpp.G2(); }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
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// CHECK:STDOUT: define internal void @_ZL19FloatArg__cpp_thunkf(float noundef %0) #1 {
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// CHECK:STDOUT: define internal void @_ZN6Carbon5OtherL19FloatArg__cpp_thunkEf(float noundef %0) #1 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %.addr = alloca float, align 4
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// CHECK:STDOUT: store float %0, ptr %.addr, align 4, !tbaa !13
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@@ -291,12 +291,12 @@ fn H() { Cpp.G2(); }
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// CHECK:STDOUT: ; Function Attrs: inlinehint mustprogress uwtable
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// CHECK:STDOUT: define linkonce_odr dso_local void @_Z2G1v() #1 comdat {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_ZL12F__cpp_thunkv()
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// CHECK:STDOUT: call void @_ZN6CarbonL12F__cpp_thunkEv()
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// CHECK:STDOUT: ret void
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
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// CHECK:STDOUT: define internal void @_ZL12F__cpp_thunkv() #2 {
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// CHECK:STDOUT: define internal void @_ZN6CarbonL12F__cpp_thunkEv() #2 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_CF__carbon_thunk.Main()
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// CHECK:STDOUT: ret void
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@@ -0,0 +1,96 @@
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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/none.carbon
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/interop/cpp/reverse/method.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/reverse/method.carbon
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// --- static.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class A {
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fn F() {}
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}
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inline Cpp '''
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void CallF() {
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Carbon::A::F();
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}
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''';
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fn CallCallF() { Cpp.CallF(); }
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// CHECK:STDOUT: ; ModuleID = 'static.carbon'
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// CHECK:STDOUT: source_filename = "static.carbon"
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// 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"
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// CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: mustprogress uwtable
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// CHECK:STDOUT: define dso_local void @_Z5CallFv() #0 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_ZN6Carbon1A12F__cpp_thunkEv()
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// CHECK:STDOUT: ret void
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
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// CHECK:STDOUT: define internal void @_ZN6Carbon1A12F__cpp_thunkEv() #1 align 2 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_CF__carbon_thunk.A.Main()
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// CHECK:STDOUT: ret void
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: nounwind
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// CHECK:STDOUT: define void @_CF.A.Main() #2 !dbg !11 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: ret void, !dbg !14
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: nounwind
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// CHECK:STDOUT: define void @_CF__carbon_thunk.A.Main() #2 !dbg !15 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_CF.A.Main(), !dbg !16
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// CHECK:STDOUT: ret void, !dbg !16
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: nounwind
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// CHECK:STDOUT: define void @_CCallCallF.Main() #2 !dbg !17 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_Z5CallFv(), !dbg !18
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// CHECK:STDOUT: ret void, !dbg !19
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: attributes #0 = { mustprogress 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" }
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// CHECK:STDOUT: attributes #1 = { 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" }
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// CHECK:STDOUT: attributes #2 = { nounwind }
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// CHECK:STDOUT:
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// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4}
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// CHECK:STDOUT: !llvm.dbg.cu = !{!5}
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// CHECK:STDOUT: !llvm.errno.tbaa = !{!7}
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// CHECK:STDOUT:
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// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
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// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
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// CHECK:STDOUT: !2 = !{i32 8, !"PIC Level", i32 2}
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// CHECK:STDOUT: !3 = !{i32 7, !"PIE Level", i32 2}
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// CHECK:STDOUT: !4 = !{i32 7, !"uwtable", i32 2}
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// CHECK:STDOUT: !5 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
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// CHECK:STDOUT: !6 = !DIFile(filename: "static.carbon", directory: "")
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// CHECK:STDOUT: !7 = !{!8, !8, i64 0}
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// CHECK:STDOUT: !8 = !{!"int", !9, i64 0}
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// CHECK:STDOUT: !9 = !{!"omnipotent char", !10, i64 0}
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// CHECK:STDOUT: !10 = !{!"Simple C++ TBAA"}
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// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "F", linkageName: "_CF.A.Main", scope: null, file: !6, line: 6, type: !12, spFlags: DISPFlagDefinition, unit: !5)
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// CHECK:STDOUT: !12 = !DISubroutineType(types: !13)
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// CHECK:STDOUT: !13 = !{null}
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// CHECK:STDOUT: !14 = !DILocation(line: 6, column: 3, scope: !11)
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// CHECK:STDOUT: !15 = distinct !DISubprogram(name: "F__carbon_thunk", linkageName: "_CF__carbon_thunk.A.Main", scope: null, file: !6, line: 6, type: !12, spFlags: DISPFlagDefinition, unit: !5)
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// CHECK:STDOUT: !16 = !DILocation(line: 6, column: 3, scope: !15)
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// CHECK:STDOUT: !17 = distinct !DISubprogram(name: "CallCallF", linkageName: "_CCallCallF.Main", scope: null, file: !6, line: 15, type: !12, spFlags: DISPFlagDefinition, unit: !5)
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// CHECK:STDOUT: !18 = !DILocation(line: 15, column: 18, scope: !17)
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// CHECK:STDOUT: !19 = !DILocation(line: 15, column: 1, scope: !17)
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