mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Richard SmithandJon Ross-Perkins
1e7b7e53ae
The general strategy here is to force use of a thunk when we want to use default arguments, and have Clang generate uses of the default arguments on its side of the thunk. To support this, change the key type used in `clang_decls` from being just a `Decl*` to being a pair of `Decl*` and number of parameters in the case of function decls. Import distinct `SemIR::Function`s for each number of parameters that's used, and corresponding distinct thunks. --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
113 lines
5.7 KiB
Plaintext
113 lines
5.7 KiB
Plaintext
// 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/constructor.carbon
|
|
// TIP: To dump output, run:
|
|
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/constructor.carbon
|
|
|
|
// ============================================================================
|
|
// Default constructor
|
|
// ============================================================================
|
|
|
|
// --- default.h
|
|
|
|
class C {
|
|
public:
|
|
C() : x_(8), y_(9) {}
|
|
|
|
private:
|
|
int x_;
|
|
int y_;
|
|
};
|
|
|
|
// --- import_default.carbon
|
|
|
|
library "[[@TEST_NAME]]";
|
|
|
|
import Cpp library "default.h";
|
|
|
|
fn F() {
|
|
let c: Cpp.C = Cpp.C.C();
|
|
}
|
|
|
|
// CHECK:STDOUT: ; ModuleID = 'import_default.carbon'
|
|
// CHECK:STDOUT: source_filename = "import_default.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.C = type { i32, i32 }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: $_ZN1CC1Ev = comdat any
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: $_ZN1CC2Ev = comdat any
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: define void @_CF.Main() !dbg !7 {
|
|
// CHECK:STDOUT: entry:
|
|
// CHECK:STDOUT: %.loc7_26.1.temp = alloca [8 x i8], align 1, !dbg !10
|
|
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc7_26.1.temp), !dbg !10
|
|
// CHECK:STDOUT: call void @_ZN1CC1Ev.carbon_thunk(ptr %.loc7_26.1.temp), !dbg !10
|
|
// CHECK:STDOUT: ret void, !dbg !11
|
|
// 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)) #0
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
|
|
// CHECK:STDOUT: define dso_local void @_ZN1CC1Ev.carbon_thunk(ptr %return) #1 {
|
|
// CHECK:STDOUT: entry:
|
|
// CHECK:STDOUT: %return.addr = alloca ptr, align 8
|
|
// CHECK:STDOUT: store ptr %return, ptr %return.addr, align 8
|
|
// CHECK:STDOUT: %0 = load ptr, ptr %return.addr, align 8
|
|
// CHECK:STDOUT: call void @_ZN1CC1Ev(ptr nonnull align 4 dereferenceable(8) %0)
|
|
// CHECK:STDOUT: ret void
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: ; Function Attrs: mustprogress noinline optnone
|
|
// CHECK:STDOUT: define linkonce_odr dso_local void @_ZN1CC1Ev(ptr nonnull align 4 dereferenceable(8) %this) unnamed_addr #2 comdat align 2 {
|
|
// CHECK:STDOUT: entry:
|
|
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
|
|
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8
|
|
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
|
|
// CHECK:STDOUT: call void @_ZN1CC2Ev(ptr nonnull align 4 dereferenceable(8) %this1)
|
|
// CHECK:STDOUT: ret void
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: ; Function Attrs: mustprogress noinline nounwind optnone
|
|
// CHECK:STDOUT: define linkonce_odr dso_local void @_ZN1CC2Ev(ptr nonnull align 4 dereferenceable(8) %this) unnamed_addr #3 comdat align 2 {
|
|
// CHECK:STDOUT: entry:
|
|
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
|
|
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8
|
|
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
|
|
// CHECK:STDOUT: %x_ = getelementptr inbounds nuw %class.C, ptr %this1, i32 0, i32 0
|
|
// CHECK:STDOUT: store i32 8, ptr %x_, align 4
|
|
// CHECK:STDOUT: %y_ = getelementptr inbounds nuw %class.C, ptr %this1, i32 0, i32 1
|
|
// CHECK:STDOUT: store i32 9, ptr %y_, align 4
|
|
// CHECK:STDOUT: ret void
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
|
|
// CHECK:STDOUT: attributes #1 = { alwaysinline mustprogress "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: attributes #2 = { mustprogress noinline 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: attributes #3 = { 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: "import_default.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: 7, column: 18, scope: !7)
|
|
// CHECK:STDOUT: !11 = !DILocation(line: 6, column: 1, scope: !7)
|