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carbon-lang/toolchain/lower/testdata/function/generic/import.carbon
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Christopher Di Bella 6abcfa24b2 Classify decorated built-in types as trivially destructible (#7847) 
Types like constant pointers and `MaybeUnformed(i32)` should have
trivial destruction, but were classified as non-trivially destructible.
2026-09-28 23:16:19 +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/int.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/function/generic/import.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/function/generic/import.carbon
// Test that we can import and call generic functions across libraries, both
// when the generic is defined in a directly imported library and when it's
// defined in an indirectly imported library.
// --- indirectly_imported.carbon
library "[[@TEST_NAME]]";
fn IndirectDeclared();
fn IndirectDefined() {}
fn IndirectGeneric(generic T: type, x: T*) -> T* {
IndirectDeclared();
IndirectDefined();
return x;
}
// --- directly_imported.carbon
library "[[@TEST_NAME]]";
import library "indirectly_imported";
fn DirectDeclared();
fn DirectDefined() {}
fn DirectGeneric(generic T: type, y: T*) -> T* {
DirectDeclared();
DirectDefined();
return IndirectGeneric(T, y);
}
// --- use.carbon
library "[[@TEST_NAME]]";
import library "directly_imported";
fn Call() -> i32 {
var n: i32 = 0;
var p: i32* = DirectGeneric(i32, &n);
return *p;
}
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'indirectly_imported.carbon'
// CHECK:STDOUT: source_filename = "indirectly_imported.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CIndirectDeclared.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CIndirectDefined.Main() #0 !dbg !22 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !23
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!19}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
// CHECK:STDOUT:
// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !18 = !DIFile(filename: "indirectly_imported.carbon", directory: "")
// CHECK:STDOUT: !19 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !18, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !20 = !{null}
// CHECK:STDOUT: !21 = !DISubroutineType(types: !20)
// CHECK:STDOUT: !22 = distinct !DISubprogram(name: "IndirectDefined", linkageName: "_CIndirectDefined.Main", scope: null, file: !18, line: 6, type: !21, spFlags: DISPFlagDefinition, unit: !19)
// CHECK:STDOUT: !23 = !DILocation(line: 6, column: 1, scope: !22)
// CHECK:STDOUT:
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'directly_imported.carbon'
// CHECK:STDOUT: source_filename = "directly_imported.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CDirectDeclared.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CDirectDefined.Main() #0 !dbg !26 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !27
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!25}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
// CHECK:STDOUT:
// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !20 = !{null}
// CHECK:STDOUT: !21 = !DISubroutineType(types: !20)
// CHECK:STDOUT: !24 = !DIFile(filename: "directly_imported.carbon", directory: "")
// CHECK:STDOUT: !25 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !24, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !26 = distinct !DISubprogram(name: "DirectDefined", linkageName: "_CDirectDefined.Main", scope: null, file: !24, line: 8, type: !21, spFlags: DISPFlagDefinition, unit: !25)
// CHECK:STDOUT: !27 = !DILocation(line: 8, column: 1, scope: !26)
// CHECK:STDOUT:
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'use.carbon'
// CHECK:STDOUT: source_filename = "use.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CCall.Main() #0 !dbg !38 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %n.var = alloca i32, align 4, !dbg !41
// CHECK:STDOUT: %p.var = alloca ptr, align 8, !dbg !43
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %n.var), !dbg !41
// CHECK:STDOUT: store i32 0, ptr %n.var, align 4, !dbg !41
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %p.var), !dbg !43
// CHECK:STDOUT: %DirectGeneric.call = call ptr @_CDirectGeneric.Main.84588f41d61dafba(ptr %n.var), !dbg !46
// CHECK:STDOUT: store ptr %DirectGeneric.call, ptr %p.var, align 8, !dbg !43
// CHECK:STDOUT: %.loc9_11 = load ptr, ptr %p.var, align 8, !dbg !50
// CHECK:STDOUT: %.loc9_10.2 = load i32, ptr %.loc9_11, align 4, !dbg !51
// CHECK:STDOUT: call void @"_CSelfDestruct.d088c7eb746488be:core.Destroy.Core"(ptr %p.var), !dbg !43
// CHECK:STDOUT: call void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %n.var), !dbg !41
// CHECK:STDOUT: ret i32 %.loc9_10.2, !dbg !52
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.d088c7eb746488be:core.Destroy.Core"(ptr %self) #0 !dbg !53 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !55
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %self) #0 !dbg !57 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !59
// 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: nounwind
// CHECK:STDOUT: define linkonce_odr ptr @_CDirectGeneric.Main.84588f41d61dafba(ptr %y) #0 !dbg !61 {
// CHECK:STDOUT: call void @_CDirectDeclared.Main(), !dbg !66
// CHECK:STDOUT: call void @_CDirectDefined.Main(), !dbg !67
// CHECK:STDOUT: %1 = call ptr @_CIndirectGeneric.Main.84588f41d61dafba(ptr %y), !dbg !69
// CHECK:STDOUT: ret ptr %1, !dbg !70
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CDirectDeclared.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CDirectDefined.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr ptr @_CIndirectGeneric.Main.84588f41d61dafba(ptr %x) #0 !dbg !72 {
// CHECK:STDOUT: call void @_CIndirectDeclared.Main(), !dbg !77
// CHECK:STDOUT: call void @_CIndirectDefined.Main(), !dbg !78
// CHECK:STDOUT: ret ptr %x, !dbg !80
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CIndirectDeclared.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CIndirectDefined.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 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.dbg.cu = !{!29}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
// CHECK:STDOUT:
// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !18 = !DIFile(filename: "indirectly_imported.carbon", directory: "")
// CHECK:STDOUT: !24 = !DIFile(filename: "directly_imported.carbon", directory: "")
// CHECK:STDOUT: !28 = !DIFile(filename: "use.carbon", directory: "")
// CHECK:STDOUT: !29 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !28, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !30 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !31 = !{!30}
// CHECK:STDOUT: !32 = !DISubroutineType(types: !31)
// CHECK:STDOUT: !33 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !34 = !{null, !33}
// CHECK:STDOUT: !35 = !DISubroutineType(types: !34)
// CHECK:STDOUT: !36 = !{null, !30}
// CHECK:STDOUT: !37 = !DISubroutineType(types: !36)
// CHECK:STDOUT: !38 = distinct !DISubprogram(name: "Call", linkageName: "_CCall.Main", scope: null, file: !28, line: 6, type: !32, spFlags: DISPFlagDefinition, unit: !29)
// CHECK:STDOUT: !41 = !DILocation(line: 7, column: 3, scope: !38)
// CHECK:STDOUT: !43 = !DILocation(line: 8, column: 3, scope: !38)
// CHECK:STDOUT: !46 = !DILocation(line: 8, column: 17, scope: !38)
// CHECK:STDOUT: !47 = !{!33, !33}
// CHECK:STDOUT: !48 = !DISubroutineType(types: !47)
// CHECK:STDOUT: !50 = !DILocation(line: 9, column: 11, scope: !38)
// CHECK:STDOUT: !51 = !DILocation(line: 9, column: 10, scope: !38)
// CHECK:STDOUT: !52 = !DILocation(line: 9, column: 3, scope: !38)
// CHECK:STDOUT: !53 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.d088c7eb746488be:core.Destroy.Core", scope: null, file: !28, line: 8, type: !35, spFlags: DISPFlagDefinition, unit: !29, retainedNodes: !56)
// CHECK:STDOUT: !54 = !DILocalVariable(arg: 1, scope: !53, type: !33)
// CHECK:STDOUT: !55 = !DILocation(line: 8, column: 3, scope: !53)
// CHECK:STDOUT: !56 = !{!54}
// CHECK:STDOUT: !57 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.f58524831c37807e:core.Destroy.Core", scope: null, file: !28, line: 7, type: !37, spFlags: DISPFlagDefinition, unit: !29, retainedNodes: !60)
// CHECK:STDOUT: !58 = !DILocalVariable(arg: 1, scope: !57, type: !30)
// CHECK:STDOUT: !59 = !DILocation(line: 7, column: 3, scope: !57)
// CHECK:STDOUT: !60 = !{!58}
// CHECK:STDOUT: !61 = distinct !DISubprogram(name: "DirectGeneric", linkageName: "_CDirectGeneric.Main.84588f41d61dafba", scope: null, file: !24, line: 10, type: !48, spFlags: DISPFlagDefinition, unit: !29, retainedNodes: !71)
// CHECK:STDOUT: !62 = !DILocalVariable(arg: 1, scope: !61, type: !33)
// CHECK:STDOUT: !66 = !DILocation(line: 11, column: 3, scope: !61)
// CHECK:STDOUT: !67 = !DILocation(line: 12, column: 3, scope: !61)
// CHECK:STDOUT: !69 = !DILocation(line: 13, column: 10, scope: !61)
// CHECK:STDOUT: !70 = !DILocation(line: 13, column: 3, scope: !61)
// CHECK:STDOUT: !71 = !{!62}
// CHECK:STDOUT: !72 = distinct !DISubprogram(name: "IndirectGeneric", linkageName: "_CIndirectGeneric.Main.84588f41d61dafba", scope: null, file: !18, line: 8, type: !48, spFlags: DISPFlagDefinition, unit: !29, retainedNodes: !81)
// CHECK:STDOUT: !73 = !DILocalVariable(arg: 1, scope: !72, type: !33)
// CHECK:STDOUT: !77 = !DILocation(line: 9, column: 3, scope: !72)
// CHECK:STDOUT: !78 = !DILocation(line: 10, column: 3, scope: !72)
// CHECK:STDOUT: !80 = !DILocation(line: 11, column: 3, scope: !72)
// CHECK:STDOUT: !81 = !{!73}
// CHECK:STDOUT:
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