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carbon-lang/toolchain/lower/testdata/builtins/cpp.carbon
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Richard Smith cefa0397bb More fixes to package and library fingerprinting. (#7297) 
Fix import logic to make all imported packages be children of the
`NameScopeId::Package` scope. Previously, indirectly-imported packages
would end up as children of their importing package's scope, which
resulted in them not being treated as packages at all, and in particular
not being fingerprinted as packages.

Fixing that caused a failure in the fingerprinting logic as we started
to encounter packages with no correspoding import scopes. Instead of
looking for import scopes, use a simpler mechanism to map packages to
their package names, and clean up.

Unfortunately the latter change churns all the fingerprints again :(
Hopefully this is the last time for a while.
2026-06-04 17:41:46 +00:00

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// 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/full.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/builtins/cpp.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/builtins/cpp.carbon
// --- std_initializer_list_make.carbon
library "[[@TEST_NAME]]";
import Cpp inline '''
template<typename T>
struct InitializerListPointerPointer {
T* begin;
T* end;
};
template<typename T>
struct InitializerListPointerSize {
T* begin;
decltype(sizeof(T)) size;
};
''';
fn MakePointerPointer(a: array(i32, 4)) -> Cpp.InitializerListPointerPointer(i32) = "cpp.std.initializer_list.make";
fn MakePointerSize(a: array(i32, 4)) -> Cpp.InitializerListPointerSize(i32) = "cpp.std.initializer_list.make";
fn TakePointerPointer(a: Cpp.InitializerListPointerPointer(i32));
fn TakePointerSize(a: Cpp.InitializerListPointerSize(i32));
fn Test() {
TakePointerPointer(MakePointerPointer((1, 2, 3, 4)));
TakePointerSize(MakePointerSize((1, 2, 3, 4)));
}
// CHECK:STDOUT: ; ModuleID = 'std_initializer_list_make.carbon'
// CHECK:STDOUT: source_filename = "std_initializer_list_make.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: @array = internal constant [4 x i32] [i32 1, i32 2, i32 3, i32 4]
// CHECK:STDOUT: @array.loc25_52.18 = internal constant [4 x i32] [i32 1, i32 2, i32 3, i32 4]
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CTakePointerPointer.Main(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CTakePointerSize.Main(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CTest.Main() #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc25_53.1.temp = alloca [16 x i8], align 8, !dbg !14
// CHECK:STDOUT: %.loc25_52.3.temp = alloca [4 x i32], align 4, !dbg !15
// CHECK:STDOUT: %.loc26_47.1.temp = alloca [16 x i8], align 8, !dbg !16
// CHECK:STDOUT: %.loc26_46.3.temp = alloca [4 x i32], align 4, !dbg !17
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc25_53.1.temp), !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc25_52.3.temp), !dbg !15
// CHECK:STDOUT: %.loc25_52.4.array.index = getelementptr inbounds [4 x i32], ptr %.loc25_52.3.temp, i32 0, i64 0, !dbg !15
// CHECK:STDOUT: %.loc25_52.7.array.index = getelementptr inbounds [4 x i32], ptr %.loc25_52.3.temp, i32 0, i64 1, !dbg !15
// CHECK:STDOUT: %.loc25_52.10.array.index = getelementptr inbounds [4 x i32], ptr %.loc25_52.3.temp, i32 0, i64 2, !dbg !15
// CHECK:STDOUT: %.loc25_52.13.array.index = getelementptr inbounds [4 x i32], ptr %.loc25_52.3.temp, i32 0, i64 3, !dbg !15
// CHECK:STDOUT: %MakePointerPointer.call.init_list.begin = getelementptr inbounds nuw [16 x i8], ptr %.loc25_53.1.temp, i32 0, i32 0, !dbg !14
// CHECK:STDOUT: store ptr @array.loc25_52.18, ptr %MakePointerPointer.call.init_list.begin, align 8, !dbg !14
// CHECK:STDOUT: %MakePointerPointer.call.init_list.end = getelementptr inbounds nuw [16 x i8], ptr %.loc25_53.1.temp, i32 0, i32 8, !dbg !14
// CHECK:STDOUT: store ptr getelementptr inbounds ([4 x i32], ptr @array.loc25_52.18, i32 1), ptr %MakePointerPointer.call.init_list.end, align 8, !dbg !14
// CHECK:STDOUT: call void @_CTakePointerPointer.Main(ptr %.loc25_53.1.temp), !dbg !18
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc26_47.1.temp), !dbg !16
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc26_46.3.temp), !dbg !17
// CHECK:STDOUT: %.loc26_46.4.array.index = getelementptr inbounds [4 x i32], ptr %.loc26_46.3.temp, i32 0, i64 0, !dbg !17
// CHECK:STDOUT: %.loc26_46.7.array.index = getelementptr inbounds [4 x i32], ptr %.loc26_46.3.temp, i32 0, i64 1, !dbg !17
// CHECK:STDOUT: %.loc26_46.10.array.index = getelementptr inbounds [4 x i32], ptr %.loc26_46.3.temp, i32 0, i64 2, !dbg !17
// CHECK:STDOUT: %.loc26_46.13.array.index = getelementptr inbounds [4 x i32], ptr %.loc26_46.3.temp, i32 0, i64 3, !dbg !17
// CHECK:STDOUT: %MakePointerSize.call.init_list.begin = getelementptr inbounds nuw [16 x i8], ptr %.loc26_47.1.temp, i32 0, i32 0, !dbg !16
// CHECK:STDOUT: store ptr @array.loc25_52.18, ptr %MakePointerSize.call.init_list.begin, align 8, !dbg !16
// CHECK:STDOUT: %MakePointerSize.call.init_list.size = getelementptr inbounds nuw [16 x i8], ptr %.loc26_47.1.temp, i32 0, i32 8, !dbg !16
// CHECK:STDOUT: store i64 4, ptr %MakePointerSize.call.init_list.size, align 8, !dbg !16
// CHECK:STDOUT: call void @_CTakePointerSize.Main(ptr %.loc26_47.1.temp), !dbg !19
// CHECK:STDOUT: call void @"_COp.8ab5ebc4f407c395:core.Destroy.Core"(ptr @array), !dbg !17
// CHECK:STDOUT: call void @"_COp.8ab5ebc4f407c395:core.Destroy.Core"(ptr @array), !dbg !15
// CHECK:STDOUT: ret void, !dbg !20
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.5e27612b9dd31a14:core.Destroy.Core"(ptr %self) #0 !dbg !21 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !27
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.8ab5ebc4f407c395:core.Destroy.Core"(ptr %self) #0 !dbg !28 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !34
// 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: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @"_COp.8ab5ebc4f407c395:core.Destroy.Core", { 1, 0 }
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 3, 2, 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4}
// CHECK:STDOUT: !llvm.dbg.cu = !{!5}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!7}
// 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 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 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !6 = !DIFile(filename: "std_initializer_list_make.carbon", directory: "")
// CHECK:STDOUT: !7 = !{!8, !8, i64 0}
// CHECK:STDOUT: !8 = !{!"int", !9, i64 0}
// CHECK:STDOUT: !9 = !{!"omnipotent char", !10, i64 0}
// CHECK:STDOUT: !10 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "Test", linkageName: "_CTest.Main", scope: null, file: !6, line: 24, type: !12, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !12 = !DISubroutineType(types: !13)
// CHECK:STDOUT: !13 = !{null}
// CHECK:STDOUT: !14 = !DILocation(line: 25, column: 22, scope: !11)
// CHECK:STDOUT: !15 = !DILocation(line: 25, column: 41, scope: !11)
// CHECK:STDOUT: !16 = !DILocation(line: 26, column: 19, scope: !11)
// CHECK:STDOUT: !17 = !DILocation(line: 26, column: 35, scope: !11)
// CHECK:STDOUT: !18 = !DILocation(line: 25, column: 3, scope: !11)
// CHECK:STDOUT: !19 = !DILocation(line: 26, column: 3, scope: !11)
// CHECK:STDOUT: !20 = !DILocation(line: 24, column: 1, scope: !11)
// CHECK:STDOUT: !21 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5e27612b9dd31a14:core.Destroy.Core", scope: null, file: !6, line: 26, type: !22, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !25)
// CHECK:STDOUT: !22 = !DISubroutineType(types: !23)
// CHECK:STDOUT: !23 = !{null, !24}
// CHECK:STDOUT: !24 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !25 = !{!26}
// CHECK:STDOUT: !26 = !DILocalVariable(arg: 1, scope: !21, type: !24)
// CHECK:STDOUT: !27 = !DILocation(line: 26, column: 35, scope: !21)
// CHECK:STDOUT: !28 = distinct !DISubprogram(name: "Op", linkageName: "_COp.8ab5ebc4f407c395:core.Destroy.Core", scope: null, file: !6, line: 26, type: !29, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !32)
// CHECK:STDOUT: !29 = !DISubroutineType(types: !30)
// CHECK:STDOUT: !30 = !{null, !31}
// CHECK:STDOUT: !31 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !32 = !{!33}
// CHECK:STDOUT: !33 = !DILocalVariable(arg: 1, scope: !28, type: !31)
// CHECK:STDOUT: !34 = !DILocation(line: 26, column: 35, scope: !28)
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