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aa69a484eb0774d1b00107bc145bf46c0f871256
carbon-lang/toolchain/lower/testdata/interop/cpp/reference.carbon
T
Richard SmithDana JansensChandler Carruth
 aa69a484eb Add support for running LLVM optimizer. (#6225) 
Adds a flag `--optimize=<mode>` that specifies what to optimize for:

* `--optimize=none` turns off the optimizer as much as possible, but
still respects always_inline.
* `--optimize=debug` aims to be the equivalent of `-Og` / `-O1`, and
provides optimizations that don't affect the ability to debug the
program. This is the default.
* `--optimize=size` optimizes for the size of the produced program, and
aims to be the equivalent of `-Oz`.
* `--optimize=speed` optimizes for the execution time of the produced
program, and aims to be the equivalent of `-O3`.

Following the approach taken by Clang, the optimization level feeds into
both the configuration of the LLVM pass pipeline and the attributes
added to function definitions generated by the frontend.

Optimization is performed in a new phase, `optimize`, which runs between
`lower` and `codegen`.

---------

Co-authored-by: Dana Jansens <danakj@orodu.net>
Co-authored-by: Chandler Carruth <chandlerc@gmail.com>
2025-11-05 00:15:14 +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/interop/cpp/reference.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/reference.carbon
// ============================================================================
// Reference params
// ============================================================================
// --- pass_references.carbon
library "[[@TEST_NAME]]";
import Cpp inline '''
class C {};
auto TakeCRef(C&) -> void;
auto TakeCRRef(C&&) -> void;
auto TakeConstCRef(const C&) -> void;
auto TakeIntRef(int&) -> void;
auto TakeIntRRef(int&&) -> void;
auto TakeConstIntRef(const int&) -> void;
''';
fn PassRefs() {
var c: Cpp.C;
Cpp.TakeCRef(c);
Cpp.TakeCRRef({} as Cpp.C);
Cpp.TakeConstCRef(c);
var n: i32;
Cpp.TakeIntRef(n);
Cpp.TakeIntRRef(42 as i32);
Cpp.TakeConstIntRef(n);
}
// --- pass_references_via_thunk.carbon
library "[[@TEST_NAME]]";
import Cpp inline '''
class C {};
class ForceThunk {};
auto TakeCRef(C&, ForceThunk = {}) -> void;
auto TakeCRRef(const C&, ForceThunk = {}) -> void;
auto TakeConstCRef(const C&, ForceThunk = {}) -> void;
auto TakeIntRef(int&, ForceThunk = {}) -> void;
auto TakeIntRRef(int&&, ForceThunk = {}) -> void;
auto TakeConstIntRef(const int&, ForceThunk = {}) -> void;
''';
fn PassRefs() {
var c: Cpp.C;
Cpp.TakeCRef(c);
Cpp.TakeCRRef({} as Cpp.C);
Cpp.TakeConstCRef(c);
var n: i32;
Cpp.TakeIntRef(n);
Cpp.TakeIntRRef(42 as i32);
Cpp.TakeConstIntRef(n);
}
// ============================================================================
// Reference return values
// ============================================================================
// --- return_references.carbon
library "[[@TEST_NAME]]";
import Cpp inline '''
class C {};
auto ReturnCRef() -> C&;
auto ReturnCRRef() -> C&&;
auto ReturnConstCRef() -> const C&;
auto ReturnIntRef() -> int&;
auto ReturnIntRRef() -> int&&;
auto ReturnConstIntRef() -> const int&;
''';
fn GetRefs() {
var c1: Cpp.C* = Cpp.ReturnCRef();
var c2: Cpp.C* = Cpp.ReturnCRRef();
var c3: const Cpp.C* = Cpp.ReturnConstCRef();
var n1: i32* = Cpp.ReturnIntRef();
var n2: i32* = Cpp.ReturnIntRRef();
var n3: const i32* = Cpp.ReturnConstIntRef();
}
// --- return_references_via_thunk.carbon
library "[[@TEST_NAME]]";
import Cpp inline '''
class C {};
class ForceThunk {};
auto ReturnCRef(ForceThunk = {}) -> C&;
auto ReturnCRRef(ForceThunk = {}) -> C&&;
auto ReturnConstCRef(ForceThunk = {}) -> const C&;
auto ReturnIntRef(ForceThunk = {}) -> int&;
auto ReturnIntRRef(ForceThunk = {}) -> int&&;
auto ReturnConstIntRef(ForceThunk = {}) -> const int&;
''';
fn GetRefs() {
var c1: Cpp.C* = Cpp.ReturnCRef();
var c2: Cpp.C* = Cpp.ReturnCRRef();
var c3: const Cpp.C* = Cpp.ReturnConstCRef();
var n1: i32* = Cpp.ReturnIntRef();
var n2: i32* = Cpp.ReturnIntRRef();
var n3: const i32* = Cpp.ReturnConstIntRef();
}
// CHECK:STDOUT: ; ModuleID = 'pass_references.carbon'
// CHECK:STDOUT: source_filename = "pass_references.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: @C.val.loc19_18.3 = internal constant {} zeroinitializer
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassRefs.Main() #0 !dbg !7 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %c.var = alloca {}, align 8, !dbg !10
// CHECK:STDOUT: %.loc19_18.2.temp = alloca {}, align 8, !dbg !11
// CHECK:STDOUT: %n.var = alloca i32, align 4, !dbg !12
// CHECK:STDOUT: %.loc24_22.3.temp = alloca i32, align 4, !dbg !13
// CHECK:STDOUT: %.loc25_23.2.temp = alloca i32, align 4, !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c.var), !dbg !10
// CHECK:STDOUT: call void @_Z8TakeCRefR1C(ptr %c.var), !dbg !15
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc19_18.2.temp), !dbg !11
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc19_18.2.temp, ptr align 1 @C.val.loc19_18.3, i64 0, i1 false), !dbg !11
// CHECK:STDOUT: call void @_Z9TakeCRRefO1C.carbon_thunk(ptr %.loc19_18.2.temp), !dbg !16
// CHECK:STDOUT: call void @_Z13TakeConstCRefRK1C.carbon_thunk(ptr %c.var), !dbg !17
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %n.var), !dbg !12
// CHECK:STDOUT: call void @_Z10TakeIntRefRi(ptr %n.var), !dbg !18
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc24_22.3.temp), !dbg !13
// CHECK:STDOUT: store i32 42, ptr %.loc24_22.3.temp, align 4, !dbg !13
// CHECK:STDOUT: call void @_Z11TakeIntRRefOi.carbon_thunk(ptr %.loc24_22.3.temp), !dbg !19
// CHECK:STDOUT: %.loc25_23.1 = load i32, ptr %n.var, align 4, !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc25_23.2.temp), !dbg !14
// CHECK:STDOUT: store i32 %.loc25_23.1, ptr %.loc25_23.2.temp, align 4, !dbg !14
// CHECK:STDOUT: call void @_Z15TakeConstIntRefRKi.carbon_thunk(ptr %.loc25_23.2.temp), !dbg !20
// CHECK:STDOUT: ret void, !dbg !21
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z8TakeCRefR1C(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z10TakeIntRefRi(ptr)
// 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: nocallback nofree nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias writeonly captures(none), ptr noalias readonly captures(none), i64, i1 immarg) #2
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z9TakeCRRefO1C.carbon_thunk(ptr %0) #3 {
// 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 @_Z9TakeCRRefO1C(ptr nonnull align 1 dereferenceable(1) %1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z9TakeCRRefO1C(ptr nonnull align 1 dereferenceable(1)) #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z13TakeConstCRefRK1C.carbon_thunk(ptr %0) #3 {
// 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 @_Z13TakeConstCRefRK1C(ptr nonnull align 1 dereferenceable(1) %1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z13TakeConstCRefRK1C(ptr nonnull align 1 dereferenceable(1)) #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z11TakeIntRRefOi.carbon_thunk(ptr %0) #3 {
// 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 @_Z11TakeIntRRefOi(ptr nonnull align 4 dereferenceable(4) %1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z11TakeIntRRefOi(ptr nonnull align 4 dereferenceable(4)) #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z15TakeConstIntRefRKi.carbon_thunk(ptr %0) #3 {
// 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 @_Z15TakeConstIntRefRKi(ptr nonnull align 4 dereferenceable(4) %1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z15TakeConstIntRefRKi(ptr nonnull align 4 dereferenceable(4)) #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 4, 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: attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #3 = { 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 #4 = { "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: "pass_references.carbon", directory: "")
// CHECK:STDOUT: !7 = distinct !DISubprogram(name: "PassRefs", linkageName: "_CPassRefs.Main", scope: null, file: !6, line: 16, type: !8, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !8 = !DISubroutineType(types: !9)
// CHECK:STDOUT: !9 = !{}
// CHECK:STDOUT: !10 = !DILocation(line: 17, column: 3, scope: !7)
// CHECK:STDOUT: !11 = !DILocation(line: 19, column: 17, scope: !7)
// CHECK:STDOUT: !12 = !DILocation(line: 22, column: 3, scope: !7)
// CHECK:STDOUT: !13 = !DILocation(line: 24, column: 19, scope: !7)
// CHECK:STDOUT: !14 = !DILocation(line: 25, column: 23, scope: !7)
// CHECK:STDOUT: !15 = !DILocation(line: 18, column: 3, scope: !7)
// CHECK:STDOUT: !16 = !DILocation(line: 19, column: 3, scope: !7)
// CHECK:STDOUT: !17 = !DILocation(line: 20, column: 3, scope: !7)
// CHECK:STDOUT: !18 = !DILocation(line: 23, column: 3, scope: !7)
// CHECK:STDOUT: !19 = !DILocation(line: 24, column: 3, scope: !7)
// CHECK:STDOUT: !20 = !DILocation(line: 25, column: 3, scope: !7)
// CHECK:STDOUT: !21 = !DILocation(line: 16, column: 1, scope: !7)
// CHECK:STDOUT: ; ModuleID = 'pass_references_via_thunk.carbon'
// CHECK:STDOUT: source_filename = "pass_references_via_thunk.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.ForceThunk = type { i8 }
// CHECK:STDOUT:
// CHECK:STDOUT: @C.val.loc20_18.3 = internal constant {} zeroinitializer
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassRefs.Main() #0 !dbg !7 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %c.var = alloca {}, align 8, !dbg !10
// CHECK:STDOUT: %.loc20_18.2.temp = alloca {}, align 8, !dbg !11
// CHECK:STDOUT: %n.var = alloca i32, align 4, !dbg !12
// CHECK:STDOUT: %.loc25_22.3.temp = alloca i32, align 4, !dbg !13
// CHECK:STDOUT: %.loc26_23.2.temp = alloca i32, align 4, !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c.var), !dbg !10
// CHECK:STDOUT: call void @_Z8TakeCRefR1C10ForceThunk.carbon_thunk1(ptr %c.var), !dbg !15
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc20_18.2.temp), !dbg !11
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc20_18.2.temp, ptr align 1 @C.val.loc20_18.3, i64 0, i1 false), !dbg !11
// CHECK:STDOUT: call void @_Z9TakeCRRefRK1C10ForceThunk.carbon_thunk1(ptr %.loc20_18.2.temp), !dbg !16
// CHECK:STDOUT: call void @_Z13TakeConstCRefRK1C10ForceThunk.carbon_thunk1(ptr %c.var), !dbg !17
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %n.var), !dbg !12
// CHECK:STDOUT: call void @_Z10TakeIntRefRi10ForceThunk.carbon_thunk1(ptr %n.var), !dbg !18
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc25_22.3.temp), !dbg !13
// CHECK:STDOUT: store i32 42, ptr %.loc25_22.3.temp, align 4, !dbg !13
// CHECK:STDOUT: call void @_Z11TakeIntRRefOi10ForceThunk.carbon_thunk1(ptr %.loc25_22.3.temp), !dbg !19
// CHECK:STDOUT: %.loc26_23.1 = load i32, ptr %n.var, align 4, !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc26_23.2.temp), !dbg !14
// CHECK:STDOUT: store i32 %.loc26_23.1, ptr %.loc26_23.2.temp, align 4, !dbg !14
// CHECK:STDOUT: call void @_Z15TakeConstIntRefRKi10ForceThunk.carbon_thunk1(ptr %.loc26_23.2.temp), !dbg !20
// CHECK:STDOUT: ret void, !dbg !21
// 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: nocallback nofree nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias writeonly captures(none), ptr noalias readonly captures(none), i64, i1 immarg) #2
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z8TakeCRefR1C10ForceThunk.carbon_thunk1(ptr nonnull align 1 dereferenceable(1) %0) #3 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8, !nonnull !9
// CHECK:STDOUT: call void @_Z8TakeCRefR1C10ForceThunk(ptr nonnull align 1 dereferenceable(1) %1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z8TakeCRefR1C10ForceThunk(ptr nonnull align 1 dereferenceable(1)) #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z9TakeCRRefRK1C10ForceThunk.carbon_thunk1(ptr %0) #3 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8
// CHECK:STDOUT: call void @_Z9TakeCRRefRK1C10ForceThunk(ptr nonnull align 1 dereferenceable(1) %1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z9TakeCRRefRK1C10ForceThunk(ptr nonnull align 1 dereferenceable(1)) #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z13TakeConstCRefRK1C10ForceThunk.carbon_thunk1(ptr %0) #3 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8
// CHECK:STDOUT: call void @_Z13TakeConstCRefRK1C10ForceThunk(ptr nonnull align 1 dereferenceable(1) %1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z13TakeConstCRefRK1C10ForceThunk(ptr nonnull align 1 dereferenceable(1)) #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z10TakeIntRefRi10ForceThunk.carbon_thunk1(ptr nonnull align 4 dereferenceable(4) %0) #3 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8, !nonnull !9, !align !22
// CHECK:STDOUT: call void @_Z10TakeIntRefRi10ForceThunk(ptr nonnull align 4 dereferenceable(4) %1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z10TakeIntRefRi10ForceThunk(ptr nonnull align 4 dereferenceable(4)) #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z11TakeIntRRefOi10ForceThunk.carbon_thunk1(ptr %0) #3 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8
// CHECK:STDOUT: call void @_Z11TakeIntRRefOi10ForceThunk(ptr nonnull align 4 dereferenceable(4) %1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z11TakeIntRRefOi10ForceThunk(ptr nonnull align 4 dereferenceable(4)) #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local void @_Z15TakeConstIntRefRKi10ForceThunk.carbon_thunk1(ptr %0) #3 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8
// CHECK:STDOUT: call void @_Z15TakeConstIntRefRKi10ForceThunk(ptr nonnull align 4 dereferenceable(4) %1)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z15TakeConstIntRefRKi10ForceThunk(ptr nonnull align 4 dereferenceable(4)) #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 4, 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: attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #3 = { 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 #4 = { "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: "pass_references_via_thunk.carbon", directory: "")
// CHECK:STDOUT: !7 = distinct !DISubprogram(name: "PassRefs", linkageName: "_CPassRefs.Main", scope: null, file: !6, line: 17, type: !8, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !8 = !DISubroutineType(types: !9)
// CHECK:STDOUT: !9 = !{}
// CHECK:STDOUT: !10 = !DILocation(line: 18, column: 3, scope: !7)
// CHECK:STDOUT: !11 = !DILocation(line: 20, column: 17, scope: !7)
// CHECK:STDOUT: !12 = !DILocation(line: 23, column: 3, scope: !7)
// CHECK:STDOUT: !13 = !DILocation(line: 25, column: 19, scope: !7)
// CHECK:STDOUT: !14 = !DILocation(line: 26, column: 23, scope: !7)
// CHECK:STDOUT: !15 = !DILocation(line: 19, column: 3, scope: !7)
// CHECK:STDOUT: !16 = !DILocation(line: 20, column: 3, scope: !7)
// CHECK:STDOUT: !17 = !DILocation(line: 21, column: 3, scope: !7)
// CHECK:STDOUT: !18 = !DILocation(line: 24, column: 3, scope: !7)
// CHECK:STDOUT: !19 = !DILocation(line: 25, column: 3, scope: !7)
// CHECK:STDOUT: !20 = !DILocation(line: 26, column: 3, scope: !7)
// CHECK:STDOUT: !21 = !DILocation(line: 17, column: 1, scope: !7)
// CHECK:STDOUT: !22 = !{i64 4}
// CHECK:STDOUT: ; ModuleID = 'return_references.carbon'
// CHECK:STDOUT: source_filename = "return_references.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 @_CGetRefs.Main() #0 !dbg !7 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %c1.var = alloca ptr, align 8, !dbg !10
// CHECK:STDOUT: %c2.var = alloca ptr, align 8, !dbg !11
// CHECK:STDOUT: %c3.var = alloca ptr, align 8, !dbg !12
// CHECK:STDOUT: %n1.var = alloca ptr, align 8, !dbg !13
// CHECK:STDOUT: %n2.var = alloca ptr, align 8, !dbg !14
// CHECK:STDOUT: %n3.var = alloca ptr, align 8, !dbg !15
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c1.var), !dbg !10
// CHECK:STDOUT: %ReturnCRef.call = call ptr @_Z10ReturnCRefv(), !dbg !16
// CHECK:STDOUT: store ptr %ReturnCRef.call, ptr %c1.var, align 8, !dbg !10
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c2.var), !dbg !11
// CHECK:STDOUT: %ReturnCRRef.call = call ptr @_Z11ReturnCRRefv(), !dbg !17
// CHECK:STDOUT: store ptr %ReturnCRRef.call, ptr %c2.var, align 8, !dbg !11
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c3.var), !dbg !12
// CHECK:STDOUT: %ReturnConstCRef.call = call ptr @_Z15ReturnConstCRefv(), !dbg !18
// CHECK:STDOUT: store ptr %ReturnConstCRef.call, ptr %c3.var, align 8, !dbg !12
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %n1.var), !dbg !13
// CHECK:STDOUT: %ReturnIntRef.call = call ptr @_Z12ReturnIntRefv(), !dbg !19
// CHECK:STDOUT: store ptr %ReturnIntRef.call, ptr %n1.var, align 8, !dbg !13
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %n2.var), !dbg !14
// CHECK:STDOUT: %ReturnIntRRef.call = call ptr @_Z13ReturnIntRRefv(), !dbg !20
// CHECK:STDOUT: store ptr %ReturnIntRRef.call, ptr %n2.var, align 8, !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %n3.var), !dbg !15
// CHECK:STDOUT: %ReturnConstIntRef.call = call ptr @_Z17ReturnConstIntRefv(), !dbg !21
// CHECK:STDOUT: store ptr %ReturnConstIntRef.call, ptr %n3.var, align 8, !dbg !15
// CHECK:STDOUT: ret void, !dbg !22
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_Z10ReturnCRefv()
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_Z11ReturnCRRefv()
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_Z15ReturnConstCRefv()
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_Z12ReturnIntRefv()
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_Z13ReturnIntRRefv()
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @_Z17ReturnConstIntRefv()
// 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 @llvm.lifetime.start.p0, { 5, 4, 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:
// 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: "return_references.carbon", directory: "")
// CHECK:STDOUT: !7 = distinct !DISubprogram(name: "GetRefs", linkageName: "_CGetRefs.Main", scope: null, file: !6, line: 16, type: !8, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !8 = !DISubroutineType(types: !9)
// CHECK:STDOUT: !9 = !{}
// CHECK:STDOUT: !10 = !DILocation(line: 17, column: 3, scope: !7)
// CHECK:STDOUT: !11 = !DILocation(line: 18, column: 3, scope: !7)
// CHECK:STDOUT: !12 = !DILocation(line: 19, column: 3, scope: !7)
// CHECK:STDOUT: !13 = !DILocation(line: 21, column: 3, scope: !7)
// CHECK:STDOUT: !14 = !DILocation(line: 22, column: 3, scope: !7)
// CHECK:STDOUT: !15 = !DILocation(line: 23, column: 3, scope: !7)
// CHECK:STDOUT: !16 = !DILocation(line: 17, column: 20, scope: !7)
// CHECK:STDOUT: !17 = !DILocation(line: 18, column: 20, scope: !7)
// CHECK:STDOUT: !18 = !DILocation(line: 19, column: 26, scope: !7)
// CHECK:STDOUT: !19 = !DILocation(line: 21, column: 18, scope: !7)
// CHECK:STDOUT: !20 = !DILocation(line: 22, column: 18, scope: !7)
// CHECK:STDOUT: !21 = !DILocation(line: 23, column: 24, scope: !7)
// CHECK:STDOUT: !22 = !DILocation(line: 16, column: 1, scope: !7)
// CHECK:STDOUT: ; ModuleID = 'return_references_via_thunk.carbon'
// CHECK:STDOUT: source_filename = "return_references_via_thunk.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.ForceThunk = type { i8 }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CGetRefs.Main() #0 !dbg !7 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %c1.var = alloca ptr, align 8, !dbg !10
// CHECK:STDOUT: %c2.var = alloca ptr, align 8, !dbg !11
// CHECK:STDOUT: %c3.var = alloca ptr, align 8, !dbg !12
// CHECK:STDOUT: %n1.var = alloca ptr, align 8, !dbg !13
// CHECK:STDOUT: %n2.var = alloca ptr, align 8, !dbg !14
// CHECK:STDOUT: %n3.var = alloca ptr, align 8, !dbg !15
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c1.var), !dbg !10
// CHECK:STDOUT: %ReturnCRef__carbon_thunk.call = call ptr @_Z10ReturnCRef10ForceThunk.carbon_thunk0(), !dbg !16
// CHECK:STDOUT: store ptr %ReturnCRef__carbon_thunk.call, ptr %c1.var, align 8, !dbg !10
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c2.var), !dbg !11
// CHECK:STDOUT: %ReturnCRRef__carbon_thunk.call = call ptr @_Z11ReturnCRRef10ForceThunk.carbon_thunk0(), !dbg !17
// CHECK:STDOUT: store ptr %ReturnCRRef__carbon_thunk.call, ptr %c2.var, align 8, !dbg !11
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c3.var), !dbg !12
// CHECK:STDOUT: %ReturnConstCRef__carbon_thunk.call = call ptr @_Z15ReturnConstCRef10ForceThunk.carbon_thunk0(), !dbg !18
// CHECK:STDOUT: store ptr %ReturnConstCRef__carbon_thunk.call, ptr %c3.var, align 8, !dbg !12
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %n1.var), !dbg !13
// CHECK:STDOUT: %ReturnIntRef__carbon_thunk.call = call ptr @_Z12ReturnIntRef10ForceThunk.carbon_thunk0(), !dbg !19
// CHECK:STDOUT: store ptr %ReturnIntRef__carbon_thunk.call, ptr %n1.var, align 8, !dbg !13
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %n2.var), !dbg !14
// CHECK:STDOUT: %ReturnIntRRef__carbon_thunk.call = call ptr @_Z13ReturnIntRRef10ForceThunk.carbon_thunk0(), !dbg !20
// CHECK:STDOUT: store ptr %ReturnIntRRef__carbon_thunk.call, ptr %n2.var, align 8, !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %n3.var), !dbg !15
// CHECK:STDOUT: %ReturnConstIntRef__carbon_thunk.call = call ptr @_Z17ReturnConstIntRef10ForceThunk.carbon_thunk0(), !dbg !21
// CHECK:STDOUT: store ptr %ReturnConstIntRef__carbon_thunk.call, ptr %n3.var, align 8, !dbg !15
// CHECK:STDOUT: ret void, !dbg !22
// 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: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local nonnull align 1 dereferenceable(1) ptr @_Z10ReturnCRef10ForceThunk.carbon_thunk0() #2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: %call = call nonnull align 1 dereferenceable(1) ptr @_Z10ReturnCRef10ForceThunk()
// CHECK:STDOUT: ret ptr %call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare nonnull align 1 dereferenceable(1) ptr @_Z10ReturnCRef10ForceThunk() #3
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local nonnull align 1 dereferenceable(1) ptr @_Z11ReturnCRRef10ForceThunk.carbon_thunk0() #2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: %call = call nonnull align 1 dereferenceable(1) ptr @_Z11ReturnCRRef10ForceThunk()
// CHECK:STDOUT: ret ptr %call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare nonnull align 1 dereferenceable(1) ptr @_Z11ReturnCRRef10ForceThunk() #3
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local nonnull align 1 dereferenceable(1) ptr @_Z15ReturnConstCRef10ForceThunk.carbon_thunk0() #2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: %call = call nonnull align 1 dereferenceable(1) ptr @_Z15ReturnConstCRef10ForceThunk()
// CHECK:STDOUT: ret ptr %call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare nonnull align 1 dereferenceable(1) ptr @_Z15ReturnConstCRef10ForceThunk() #3
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local nonnull align 4 dereferenceable(4) ptr @_Z12ReturnIntRef10ForceThunk.carbon_thunk0() #2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: %call = call nonnull align 4 dereferenceable(4) ptr @_Z12ReturnIntRef10ForceThunk()
// CHECK:STDOUT: ret ptr %call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare nonnull align 4 dereferenceable(4) ptr @_Z12ReturnIntRef10ForceThunk() #3
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local nonnull align 4 dereferenceable(4) ptr @_Z13ReturnIntRRef10ForceThunk.carbon_thunk0() #2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: %call = call nonnull align 4 dereferenceable(4) ptr @_Z13ReturnIntRRef10ForceThunk()
// CHECK:STDOUT: ret ptr %call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare nonnull align 4 dereferenceable(4) ptr @_Z13ReturnIntRRef10ForceThunk() #3
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress
// CHECK:STDOUT: define dso_local nonnull align 4 dereferenceable(4) ptr @_Z17ReturnConstIntRef10ForceThunk.carbon_thunk0() #2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %agg.tmp = alloca %class.ForceThunk, align 1
// CHECK:STDOUT: %call = call nonnull align 4 dereferenceable(4) ptr @_Z17ReturnConstIntRef10ForceThunk()
// CHECK:STDOUT: ret ptr %call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare nonnull align 4 dereferenceable(4) ptr @_Z17ReturnConstIntRef10ForceThunk() #3
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 5, 4, 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: 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, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !6 = !DIFile(filename: "return_references_via_thunk.carbon", directory: "")
// CHECK:STDOUT: !7 = distinct !DISubprogram(name: "GetRefs", linkageName: "_CGetRefs.Main", scope: null, file: !6, line: 17, type: !8, spFlags: DISPFlagDefinition, unit: !5)
// CHECK:STDOUT: !8 = !DISubroutineType(types: !9)
// CHECK:STDOUT: !9 = !{}
// CHECK:STDOUT: !10 = !DILocation(line: 18, column: 3, scope: !7)
// CHECK:STDOUT: !11 = !DILocation(line: 19, column: 3, scope: !7)
// CHECK:STDOUT: !12 = !DILocation(line: 20, column: 3, scope: !7)
// CHECK:STDOUT: !13 = !DILocation(line: 22, column: 3, scope: !7)
// CHECK:STDOUT: !14 = !DILocation(line: 23, column: 3, scope: !7)
// CHECK:STDOUT: !15 = !DILocation(line: 24, column: 3, scope: !7)
// CHECK:STDOUT: !16 = !DILocation(line: 18, column: 20, scope: !7)
// CHECK:STDOUT: !17 = !DILocation(line: 19, column: 20, scope: !7)
// CHECK:STDOUT: !18 = !DILocation(line: 20, column: 26, scope: !7)
// CHECK:STDOUT: !19 = !DILocation(line: 22, column: 18, scope: !7)
// CHECK:STDOUT: !20 = !DILocation(line: 23, column: 18, scope: !7)
// CHECK:STDOUT: !21 = !DILocation(line: 24, column: 24, scope: !7)
// CHECK:STDOUT: !22 = !DILocation(line: 17, column: 1, scope: !7)
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