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992d435023e2d221f0c9dddaa7c1930f04b48719
carbon-lang/toolchain/lower/testdata/interop/cpp/pointer.carbon
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Burak Emir 992d435023 Replace unused bindings with anonymous binding in lower/testdata. (#6479) 
This updates lower/testdata to use _ instead of proper names, in order
to avoid the "unused binding" warnings from #2022 which are being
implemented. These changes do not depend on the implementation which
should make everything easier to review.

See #6460 with part 1 of the implementation. It was split upon request
in order to make reviewing easier, the original state of the PR was
updating hundreds of test cases.
The PR has thus been split, part 2 including test cases changes can be
viewed at
https://github.com/burakemir/carbon-lang/tree/unused_pattern_bindings_p2022_impl_part2
... many tests need to be updated, so it seems best to get those tests
out of the way that are not interesting.

These are not all tests in lower/testdata - a few of them are
interesting in the sense that they cannot use '_' because it leads to
failed redeclaration check. This is exactly the scenario described in
#3763 which requires the 'unused' marker. Those are left untouched here
but are updated in
https://github.com/burakemir/carbon-lang/tree/unused_pattern_bindings_p2022_impl_part2
2025-12-17 15:43:04 +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/interop/cpp/pointer.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/pointer.carbon
// ============================================================================
// Non-null pointers
// ============================================================================
// --- nonnull.carbon
library "[[@TEST_NAME]]";
import Cpp inline '''
class C {};
auto TakePtr(C* _Nonnull) -> void;
auto ReturnPtr() -> C* _Nonnull;
auto TakePtrWithThunk(C* _Nonnull, int = 0) -> void;
auto ReturnPtrWithThunk(int = 0) -> C* _Nonnull;
''';
fn PassPtr(p: Cpp.C*) {
Cpp.TakePtr(p);
}
fn ReturnPtr() -> Cpp.C* {
return Cpp.ReturnPtr();
}
fn PassPtrWithThunk(p: Cpp.C*) {
Cpp.TakePtrWithThunk(p);
}
fn ReturnPtrWithThunk() -> Cpp.C* {
return Cpp.ReturnPtrWithThunk();
}
// ============================================================================
// Nullable pointers
// ============================================================================
// --- nullable.carbon
library "[[@TEST_NAME]]";
import Cpp inline '''
class C {};
auto TakePtr(C*) -> void;
auto ReturnPtr() -> C*;
auto TakePtrWithThunk(C*, int = 0) -> void;
auto ReturnPtrWithThunk(int = 0) -> C*;
''';
fn PassPtr(_: Core.Optional(Cpp.C*)) {
// TODO: Add support for passing an optional here.
// Cpp.TakePtr(p);
}
fn PassNonnullPtr(p: Cpp.C*) {
// TODO: The `value_of_initializer` optimization doesn't get used here, so we
// unnecessarily round-trip this value through memory.
Cpp.TakePtr(p);
}
fn ReturnPtr() -> Core.Optional(Cpp.C*) {
return Cpp.ReturnPtr();
}
fn PassPtrWithThunk(_: Core.Optional(Cpp.C*)) {
// TODO: Add support for passing an optional here.
// Cpp.TakePtrWithThunk(p);
}
fn PassNonnullPtrWithThunk(p: Cpp.C*) {
Cpp.TakePtrWithThunk(p);
}
fn ReturnPtrWithThunk() -> Core.Optional(Cpp.C*) {
return Cpp.ReturnPtrWithThunk();
}
// CHECK:STDOUT: ; ModuleID = 'nonnull.carbon'
// CHECK:STDOUT: source_filename = "nonnull.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: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassPtr.Main(ptr %p) #0 !dbg !7 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_Z7TakePtrP1C(ptr %p), !dbg !13
// CHECK:STDOUT: ret void, !dbg !14
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z7TakePtrP1C(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CReturnPtr.Main() #0 !dbg !15 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %ReturnPtr.call = call ptr @_Z9ReturnPtrv(), !dbg !18
// CHECK:STDOUT: ret ptr %ReturnPtr.call, !dbg !19
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_Z9ReturnPtrv()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassPtrWithThunk.Main(ptr %p) #0 !dbg !20 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_Z16TakePtrWithThunkP1Ci.carbon_thunk1(ptr %p), !dbg !23
// CHECK:STDOUT: ret void, !dbg !24
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CReturnPtrWithThunk.Main() #0 !dbg !25 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %ReturnPtrWithThunk__carbon_thunk.call = call ptr @_Z18ReturnPtrWithThunki.carbon_thunk0(), !dbg !26
// CHECK:STDOUT: ret ptr %ReturnPtrWithThunk__carbon_thunk.call, !dbg !27
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z16TakePtrWithThunkP1Ci.carbon_thunk1(ptr %0) #1 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8
// CHECK:STDOUT: call void @_Z16TakePtrWithThunkP1Ci(ptr %1, i32 0)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z16TakePtrWithThunkP1Ci(ptr, i32) #2
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local ptr @_Z18ReturnPtrWithThunki.carbon_thunk0() #1 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %call = call ptr @_Z18ReturnPtrWithThunki(i32 0)
// CHECK:STDOUT: ret ptr %call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_Z18ReturnPtrWithThunki(i32) #2
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// 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 = { "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_plus_plus, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !6 = !DIFile(filename: "nonnull.carbon", directory: "")
// CHECK:STDOUT: !7 = distinct !DISubprogram(name: "PassPtr", linkageName: "_CPassPtr.Main", scope: null, file: !6, line: 14, type: !8, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !11)
// CHECK:STDOUT: !8 = !DISubroutineType(types: !9)
// CHECK:STDOUT: !9 = !{null, !10}
// CHECK:STDOUT: !10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
// CHECK:STDOUT: !11 = !{!12}
// CHECK:STDOUT: !12 = !DILocalVariable(arg: 1, scope: !7, type: !10)
// CHECK:STDOUT: !13 = !DILocation(line: 15, column: 3, scope: !7)
// CHECK:STDOUT: !14 = !DILocation(line: 14, column: 1, scope: !7)
// CHECK:STDOUT: !15 = distinct !DISubprogram(name: "ReturnPtr", linkageName: "_CReturnPtr.Main", scope: null, file: !6, line: 18, type: !16, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !16 = !DISubroutineType(types: !17)
// CHECK:STDOUT: !17 = !{!10}
// CHECK:STDOUT: !18 = !DILocation(line: 19, column: 10, scope: !15)
// CHECK:STDOUT: !19 = !DILocation(line: 19, column: 3, scope: !15)
// CHECK:STDOUT: !20 = distinct !DISubprogram(name: "PassPtrWithThunk", linkageName: "_CPassPtrWithThunk.Main", scope: null, file: !6, line: 22, type: !8, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !21)
// CHECK:STDOUT: !21 = !{!22}
// CHECK:STDOUT: !22 = !DILocalVariable(arg: 1, scope: !20, type: !10)
// CHECK:STDOUT: !23 = !DILocation(line: 23, column: 3, scope: !20)
// CHECK:STDOUT: !24 = !DILocation(line: 22, column: 1, scope: !20)
// CHECK:STDOUT: !25 = distinct !DISubprogram(name: "ReturnPtrWithThunk", linkageName: "_CReturnPtrWithThunk.Main", scope: null, file: !6, line: 26, type: !16, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !26 = !DILocation(line: 27, column: 10, scope: !25)
// CHECK:STDOUT: !27 = !DILocation(line: 27, column: 3, scope: !25)
// CHECK:STDOUT: ; ModuleID = 'nullable.carbon'
// CHECK:STDOUT: source_filename = "nullable.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: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassPtr.Main(ptr %_) #0 !dbg !7 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !13
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassNonnullPtr.Main(ptr %p) #0 !dbg !14 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc22_15.2.temp = alloca ptr, align 8, !dbg !17
// CHECK:STDOUT: %U.binding.as_type.as.ImplicitAs.impl.Convert.call = call ptr @"_CConvert.8432e4edee1e3855:ImplicitAs.Core.ea31ae30945a7b6b"(ptr %p), !dbg !17
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc22_15.2.temp), !dbg !17
// CHECK:STDOUT: store ptr %U.binding.as_type.as.ImplicitAs.impl.Convert.call, ptr %.loc22_15.2.temp, align 8, !dbg !17
// CHECK:STDOUT: %.loc22_15.4 = load ptr, ptr %.loc22_15.2.temp, align 8, !dbg !17
// CHECK:STDOUT: call void @_Z7TakePtrP1C(ptr %.loc22_15.4), !dbg !18
// CHECK:STDOUT: ret void, !dbg !19
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z7TakePtrP1C(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CReturnPtr.Main() #0 !dbg !20 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %ReturnPtr.call = call ptr @_Z9ReturnPtrv(), !dbg !23
// CHECK:STDOUT: ret ptr %ReturnPtr.call, !dbg !24
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_Z9ReturnPtrv()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassPtrWithThunk.Main(ptr %_) #0 !dbg !25 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !28
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassNonnullPtrWithThunk.Main(ptr %p) #0 !dbg !29 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc35_24.2.temp = alloca ptr, align 8, !dbg !32
// CHECK:STDOUT: %U.binding.as_type.as.ImplicitAs.impl.Convert.call = call ptr @"_CConvert.8432e4edee1e3855:ImplicitAs.Core.ea31ae30945a7b6b"(ptr %p), !dbg !32
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc35_24.2.temp), !dbg !32
// CHECK:STDOUT: store ptr %U.binding.as_type.as.ImplicitAs.impl.Convert.call, ptr %.loc35_24.2.temp, align 8, !dbg !32
// CHECK:STDOUT: %.loc35_24.4 = load ptr, ptr %.loc35_24.2.temp, align 8, !dbg !32
// CHECK:STDOUT: call void @_Z16TakePtrWithThunkP1Ci.carbon_thunk1(ptr %.loc35_24.4), !dbg !33
// CHECK:STDOUT: ret void, !dbg !34
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CReturnPtrWithThunk.Main() #0 !dbg !35 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %ReturnPtrWithThunk__carbon_thunk.call = call ptr @_Z18ReturnPtrWithThunki.carbon_thunk0(), !dbg !36
// CHECK:STDOUT: ret ptr %ReturnPtrWithThunk__carbon_thunk.call, !dbg !37
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr ptr @"_CConvert.8432e4edee1e3855:ImplicitAs.Core.ea31ae30945a7b6b"(ptr %self) #0 !dbg !38 {
// CHECK:STDOUT: %1 = call ptr @"_CConvert.f8c690e9701eb7d2:OptionalAs.Core.331396511c1c342b"(ptr %self), !dbg !44
// CHECK:STDOUT: ret ptr %1, !dbg !45
// 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 @"_CConvert.f8c690e9701eb7d2:OptionalAs.Core.331396511c1c342b"(ptr %self) #0 !dbg !46 {
// CHECK:STDOUT: %1 = call ptr @_CSome.Optional.Core.331396511c1c342b(ptr %self), !dbg !49
// CHECK:STDOUT: ret ptr %1, !dbg !50
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr ptr @_CSome.Optional.Core.331396511c1c342b(ptr %value) #0 !dbg !51 {
// CHECK:STDOUT: %1 = call ptr @"_CSome.e8f8f92d3d08d149:OptionalStorage.Core.f53db17714b9f655"(ptr %value), !dbg !54
// CHECK:STDOUT: ret ptr %1, !dbg !55
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr ptr @"_CSome.e8f8f92d3d08d149:OptionalStorage.Core.f53db17714b9f655"(ptr %self) #0 !dbg !56 {
// CHECK:STDOUT: %1 = alloca ptr, align 8, !dbg !59
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %1), !dbg !59
// CHECK:STDOUT: store ptr %self, ptr %1, align 8, !dbg !60
// CHECK:STDOUT: %2 = load ptr, ptr %1, align 8, !dbg !61
// CHECK:STDOUT: ret ptr %2, !dbg !62
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z16TakePtrWithThunkP1Ci.carbon_thunk1(ptr %0) #2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8
// CHECK:STDOUT: call void @_Z16TakePtrWithThunkP1Ci(ptr %1, i32 0)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z16TakePtrWithThunkP1Ci(ptr, i32) #3
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local ptr @_Z18ReturnPtrWithThunki.carbon_thunk0() #2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %call = call ptr @_Z18ReturnPtrWithThunki(i32 0)
// CHECK:STDOUT: ret ptr %call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_Z18ReturnPtrWithThunki(i32) #3
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @"_CConvert.8432e4edee1e3855:ImplicitAs.Core.ea31ae30945a7b6b", { 1, 0 }
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 0, 2, 1 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #2 = { 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 #3 = { "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_plus_plus, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !6 = !DIFile(filename: "nullable.carbon", directory: "")
// CHECK:STDOUT: !7 = distinct !DISubprogram(name: "PassPtr", linkageName: "_CPassPtr.Main", scope: null, file: !6, line: 14, type: !8, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !11)
// CHECK:STDOUT: !8 = !DISubroutineType(types: !9)
// CHECK:STDOUT: !9 = !{null, !10}
// CHECK:STDOUT: !10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
// CHECK:STDOUT: !11 = !{!12}
// CHECK:STDOUT: !12 = !DILocalVariable(arg: 1, scope: !7, type: !10)
// CHECK:STDOUT: !13 = !DILocation(line: 14, column: 1, scope: !7)
// CHECK:STDOUT: !14 = distinct !DISubprogram(name: "PassNonnullPtr", linkageName: "_CPassNonnullPtr.Main", scope: null, file: !6, line: 19, type: !8, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !15)
// CHECK:STDOUT: !15 = !{!16}
// CHECK:STDOUT: !16 = !DILocalVariable(arg: 1, scope: !14, type: !10)
// CHECK:STDOUT: !17 = !DILocation(line: 22, column: 15, scope: !14)
// CHECK:STDOUT: !18 = !DILocation(line: 22, column: 3, scope: !14)
// CHECK:STDOUT: !19 = !DILocation(line: 19, column: 1, scope: !14)
// CHECK:STDOUT: !20 = distinct !DISubprogram(name: "ReturnPtr", linkageName: "_CReturnPtr.Main", scope: null, file: !6, line: 25, type: !21, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !21 = !DISubroutineType(types: !22)
// CHECK:STDOUT: !22 = !{!10}
// CHECK:STDOUT: !23 = !DILocation(line: 26, column: 10, scope: !20)
// CHECK:STDOUT: !24 = !DILocation(line: 26, column: 3, scope: !20)
// CHECK:STDOUT: !25 = distinct !DISubprogram(name: "PassPtrWithThunk", linkageName: "_CPassPtrWithThunk.Main", scope: null, file: !6, line: 29, type: !8, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !26)
// CHECK:STDOUT: !26 = !{!27}
// CHECK:STDOUT: !27 = !DILocalVariable(arg: 1, scope: !25, type: !10)
// CHECK:STDOUT: !28 = !DILocation(line: 29, column: 1, scope: !25)
// CHECK:STDOUT: !29 = distinct !DISubprogram(name: "PassNonnullPtrWithThunk", linkageName: "_CPassNonnullPtrWithThunk.Main", scope: null, file: !6, line: 34, type: !8, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !30)
// CHECK:STDOUT: !30 = !{!31}
// CHECK:STDOUT: !31 = !DILocalVariable(arg: 1, scope: !29, type: !10)
// CHECK:STDOUT: !32 = !DILocation(line: 35, column: 24, scope: !29)
// CHECK:STDOUT: !33 = !DILocation(line: 35, column: 3, scope: !29)
// CHECK:STDOUT: !34 = !DILocation(line: 34, column: 1, scope: !29)
// CHECK:STDOUT: !35 = distinct !DISubprogram(name: "ReturnPtrWithThunk", linkageName: "_CReturnPtrWithThunk.Main", scope: null, file: !6, line: 38, type: !21, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !36 = !DILocation(line: 39, column: 10, scope: !35)
// CHECK:STDOUT: !37 = !DILocation(line: 39, column: 3, scope: !35)
// CHECK:STDOUT: !38 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.8432e4edee1e3855:ImplicitAs.Core.ea31ae30945a7b6b", scope: null, file: !39, line: 82, type: !40, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !42)
// CHECK:STDOUT: !39 = !DIFile(filename: "{{.*}}/prelude/types/optional.carbon", directory: "")
// CHECK:STDOUT: !40 = !DISubroutineType(types: !41)
// CHECK:STDOUT: !41 = !{!10, !10}
// CHECK:STDOUT: !42 = !{!43}
// CHECK:STDOUT: !43 = !DILocalVariable(arg: 1, scope: !38, type: !10)
// CHECK:STDOUT: !44 = !DILocation(line: 83, column: 12, scope: !38)
// CHECK:STDOUT: !45 = !DILocation(line: 83, column: 5, scope: !38)
// CHECK:STDOUT: !46 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.f8c690e9701eb7d2:OptionalAs.Core.331396511c1c342b", scope: null, file: !39, line: 68, type: !40, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !47)
// CHECK:STDOUT: !47 = !{!48}
// CHECK:STDOUT: !48 = !DILocalVariable(arg: 1, scope: !46, type: !10)
// CHECK:STDOUT: !49 = !DILocation(line: 69, column: 12, scope: !46)
// CHECK:STDOUT: !50 = !DILocation(line: 69, column: 5, scope: !46)
// CHECK:STDOUT: !51 = distinct !DISubprogram(name: "Some", linkageName: "_CSome.Optional.Core.331396511c1c342b", scope: null, file: !39, line: 29, type: !40, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !52)
// CHECK:STDOUT: !52 = !{!53}
// CHECK:STDOUT: !53 = !DILocalVariable(arg: 1, scope: !51, type: !10)
// CHECK:STDOUT: !54 = !DILocation(line: 30, column: 12, scope: !51)
// CHECK:STDOUT: !55 = !DILocation(line: 30, column: 5, scope: !51)
// CHECK:STDOUT: !56 = distinct !DISubprogram(name: "Some", linkageName: "_CSome.e8f8f92d3d08d149:OptionalStorage.Core.f53db17714b9f655", scope: null, file: !39, line: 125, type: !40, spFlags: DISPFlagDefinition, unit: !5, retainedNodes: !57)
// CHECK:STDOUT: !57 = !{!58}
// CHECK:STDOUT: !58 = !DILocalVariable(arg: 1, scope: !56, type: !10)
// CHECK:STDOUT: !59 = !DILocation(line: 126, column: 14, scope: !56)
// CHECK:STDOUT: !60 = !DILocation(line: 127, column: 5, scope: !56)
// CHECK:STDOUT: !61 = !DILocation(line: 126, column: 18, scope: !56)
// CHECK:STDOUT: !62 = !DILocation(line: 128, column: 5, scope: !56)
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