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carbon-lang/toolchain/lower/testdata/interop/cpp/parameters.carbon
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David Blaikie 773b7136ef Use a single llvm::Module for C++ interop and Carbon IRGen (#6595) 
Some module metadata changed - because rather than linking one module
with one module metadata value (eg: PIC Level 0, or unspecified) and one
module with a different one (PIC level 2, in clang) - we use Clang's
Module as-is, no merging required, so Clang's module metadata sticks
rather than being merged with default values from Carbon.

Also tweaked the name we use for Clang's module name so it matches the
carbon file name.

Otherwise the IR changes seem to be just reorderings - C++ interop goes
first, then Carbon, rather than the other way around.
2026-01-17 00:15:53 +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/primitives.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/parameters.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/parameters.carbon
// ============================================================================
// Parameter requires a thunk to be generated
// ============================================================================
// --- ints.h
// TODO: Also test `long long` once it's supported.
void pass_signed(signed char, short, int, long);
void pass_unsigned(unsigned char, unsigned short, unsigned int, unsigned long);
void pass_short(short);
// --- import_ints.carbon
library "[[@TEST_NAME]]";
import Cpp library "ints.h";
fn MyF() {
Cpp.pass_signed(1, 2, 3, 4);
Cpp.pass_unsigned(1, 2, 3, 4);
}
fn MakeShort() -> i16;
var c: i16;
fn PassShort(a: i16, b: i16*) {
Cpp.pass_short(a);
Cpp.pass_short(*b);
Cpp.pass_short(c);
Cpp.pass_short(MakeShort());
}
// --- struct.h
struct X {
int a;
int b;
int c;
};
void pass_struct(X);
// --- import_struct.carbon
library "[[@TEST_NAME]]";
import Cpp library "struct.h";
fn Test() {
var x: Cpp.X;
x.a = 1;
x.b = 2;
x.c = 3;
Cpp.pass_struct(x);
}
// --- class_with_nontrivial_copy.h
class Y {
public:
Y(const Y&);
int a;
int b;
int c;
};
void pass_struct(Y);
// --- import_class_with_nontrivial_copy.carbon
library "[[@TEST_NAME]]";
import Cpp library "class_with_nontrivial_copy.h";
fn PassRefExpr() {
var y: Cpp.Y;
y.a = 1;
y.b = 2;
y.c = 3;
Cpp.pass_struct(y);
}
fn Make() -> Cpp.Y;
fn PassInitExpr() {
Cpp.pass_struct(Make());
}
fn PassValueExpr(y: Cpp.Y) {
Cpp.pass_struct(y);
}
// CHECK:STDOUT: ; ModuleID = 'import_ints.carbon'
// CHECK:STDOUT: source_filename = "import_ints.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: @_Cc.Main = global i16 0
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress uwtable
// CHECK:STDOUT: define dso_local void @_Z11pass_signedasil.carbon_thunk(ptr noundef %0, ptr noundef %1, i32 noundef %2, i64 noundef %3) #0 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: %.addr1 = alloca ptr, align 8
// CHECK:STDOUT: %.addr2 = alloca i32, align 4
// CHECK:STDOUT: %.addr3 = alloca i64, align 8
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8, !tbaa !12
// CHECK:STDOUT: store ptr %1, ptr %.addr1, align 8, !tbaa !15
// CHECK:STDOUT: store i32 %2, ptr %.addr2, align 4, !tbaa !8
// CHECK:STDOUT: store i64 %3, ptr %.addr3, align 8, !tbaa !17
// CHECK:STDOUT: %4 = load ptr, ptr %.addr, align 8, !tbaa !12
// CHECK:STDOUT: %5 = load i8, ptr %4, align 1, !tbaa !19
// CHECK:STDOUT: %6 = load ptr, ptr %.addr1, align 8, !tbaa !15
// CHECK:STDOUT: %7 = load i16, ptr %6, align 2, !tbaa !20
// CHECK:STDOUT: %8 = load i32, ptr %.addr2, align 4, !tbaa !8
// CHECK:STDOUT: %9 = load i64, ptr %.addr3, align 8, !tbaa !17
// CHECK:STDOUT: call void @_Z11pass_signedasil(i8 noundef signext %5, i16 noundef signext %7, i32 noundef %8, i64 noundef %9)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z11pass_signedasil(i8 noundef signext, i16 noundef signext, i32 noundef, i64 noundef) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress uwtable
// CHECK:STDOUT: define dso_local void @_Z13pass_unsignedhtjm.carbon_thunk(ptr noundef %0, ptr noundef %1, i32 noundef %2, i64 noundef %3) #0 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: %.addr1 = alloca ptr, align 8
// CHECK:STDOUT: %.addr2 = alloca i32, align 4
// CHECK:STDOUT: %.addr3 = alloca i64, align 8
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8, !tbaa !12
// CHECK:STDOUT: store ptr %1, ptr %.addr1, align 8, !tbaa !15
// CHECK:STDOUT: store i32 %2, ptr %.addr2, align 4, !tbaa !8
// CHECK:STDOUT: store i64 %3, ptr %.addr3, align 8, !tbaa !17
// CHECK:STDOUT: %4 = load ptr, ptr %.addr, align 8, !tbaa !12
// CHECK:STDOUT: %5 = load i8, ptr %4, align 1, !tbaa !19
// CHECK:STDOUT: %6 = load ptr, ptr %.addr1, align 8, !tbaa !15
// CHECK:STDOUT: %7 = load i16, ptr %6, align 2, !tbaa !20
// CHECK:STDOUT: %8 = load i32, ptr %.addr2, align 4, !tbaa !8
// CHECK:STDOUT: %9 = load i64, ptr %.addr3, align 8, !tbaa !17
// CHECK:STDOUT: call void @_Z13pass_unsignedhtjm(i8 noundef zeroext %5, i16 noundef zeroext %7, i32 noundef %8, i64 noundef %9)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z13pass_unsignedhtjm(i8 noundef zeroext, i16 noundef zeroext, i32 noundef, i64 noundef) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress uwtable
// CHECK:STDOUT: define dso_local void @_Z10pass_shorts.carbon_thunk(ptr noundef %0) #0 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8, !tbaa !15
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8, !tbaa !15
// CHECK:STDOUT: %2 = load i16, ptr %1, align 2, !tbaa !20
// CHECK:STDOUT: call void @_Z10pass_shorts(i16 noundef signext %2)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z10pass_shorts(i16 noundef signext) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CMyF.Main() #2 !dbg !22 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc7_19.3.temp = alloca i8, align 1, !dbg !25
// CHECK:STDOUT: %.loc7_22.3.temp = alloca i16, align 2, !dbg !26
// CHECK:STDOUT: %.loc9_21.3.temp = alloca i8, align 1, !dbg !27
// CHECK:STDOUT: %.loc9_24.3.temp = alloca i16, align 2, !dbg !28
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc7_19.3.temp), !dbg !25
// CHECK:STDOUT: store i8 1, ptr %.loc7_19.3.temp, align 1, !dbg !25
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc7_22.3.temp), !dbg !26
// CHECK:STDOUT: store i16 2, ptr %.loc7_22.3.temp, align 2, !dbg !26
// CHECK:STDOUT: call void @_Z11pass_signedasil.carbon_thunk(ptr %.loc7_19.3.temp, ptr %.loc7_22.3.temp, i32 3, i64 4), !dbg !29
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc9_21.3.temp), !dbg !27
// CHECK:STDOUT: store i8 1, ptr %.loc9_21.3.temp, align 1, !dbg !27
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc9_24.3.temp), !dbg !28
// CHECK:STDOUT: store i16 2, ptr %.loc9_24.3.temp, align 2, !dbg !28
// CHECK:STDOUT: call void @_Z13pass_unsignedhtjm.carbon_thunk(ptr %.loc9_21.3.temp, ptr %.loc9_24.3.temp, i32 3, i64 4), !dbg !30
// CHECK:STDOUT: ret void, !dbg !31
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare i16 @_CMakeShort.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassShort.Main(i16 %a, ptr %b) #2 !dbg !32 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc17_18.1.temp = alloca i16, align 2, !dbg !40
// CHECK:STDOUT: %.loc18_18.3.temp = alloca i16, align 2, !dbg !41
// CHECK:STDOUT: %.loc19_18.2.temp = alloca i16, align 2, !dbg !42
// CHECK:STDOUT: %.loc20_28.3.temp = alloca i16, align 2, !dbg !43
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc17_18.1.temp), !dbg !40
// CHECK:STDOUT: store i16 %a, ptr %.loc17_18.1.temp, align 2, !dbg !40
// CHECK:STDOUT: call void @_Z10pass_shorts.carbon_thunk(ptr %.loc17_18.1.temp), !dbg !44
// CHECK:STDOUT: %.loc18_18.2 = load i16, ptr %b, align 2, !dbg !41
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc18_18.3.temp), !dbg !41
// CHECK:STDOUT: store i16 %.loc18_18.2, ptr %.loc18_18.3.temp, align 2, !dbg !41
// CHECK:STDOUT: call void @_Z10pass_shorts.carbon_thunk(ptr %.loc18_18.3.temp), !dbg !45
// CHECK:STDOUT: %.loc19_18.1 = load i16, ptr @_Cc.Main, align 2, !dbg !42
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc19_18.2.temp), !dbg !42
// CHECK:STDOUT: store i16 %.loc19_18.1, ptr %.loc19_18.2.temp, align 2, !dbg !42
// CHECK:STDOUT: call void @_Z10pass_shorts.carbon_thunk(ptr %.loc19_18.2.temp), !dbg !46
// CHECK:STDOUT: %MakeShort.call = call i16 @_CMakeShort.Main(), !dbg !43
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc20_28.3.temp), !dbg !43
// CHECK:STDOUT: store i16 %MakeShort.call, ptr %.loc20_28.3.temp, align 2, !dbg !43
// CHECK:STDOUT: call void @_Z10pass_shorts.carbon_thunk(ptr %.loc20_28.3.temp), !dbg !47
// CHECK:STDOUT: ret void, !dbg !48
// 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)) #3
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 7, 6, 5, 4, 3, 2, 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { alwaysinline mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #2 = { nounwind }
// CHECK:STDOUT: attributes #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4, !5}
// CHECK:STDOUT: !llvm.dbg.cu = !{!6}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!8}
// 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 2}
// CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !5 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !6 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !7, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !7 = !DIFile(filename: "import_ints.carbon", directory: "")
// CHECK:STDOUT: !8 = !{!9, !9, i64 0}
// CHECK:STDOUT: !9 = !{!"int", !10, i64 0}
// CHECK:STDOUT: !10 = !{!"omnipotent char", !11, i64 0}
// CHECK:STDOUT: !11 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !12 = !{!13, !13, i64 0}
// CHECK:STDOUT: !13 = !{!"p1 omnipotent char", !14, i64 0}
// CHECK:STDOUT: !14 = !{!"any pointer", !10, i64 0}
// CHECK:STDOUT: !15 = !{!16, !16, i64 0}
// CHECK:STDOUT: !16 = !{!"p1 short", !14, i64 0}
// CHECK:STDOUT: !17 = !{!18, !18, i64 0}
// CHECK:STDOUT: !18 = !{!"long", !10, i64 0}
// CHECK:STDOUT: !19 = !{!10, !10, i64 0}
// CHECK:STDOUT: !20 = !{!21, !21, i64 0}
// CHECK:STDOUT: !21 = !{!"short", !10, i64 0}
// CHECK:STDOUT: !22 = distinct !DISubprogram(name: "MyF", linkageName: "_CMyF.Main", scope: null, file: !7, line: 6, type: !23, spFlags: DISPFlagDefinition, unit: !6)
// CHECK:STDOUT: !23 = !DISubroutineType(types: !24)
// CHECK:STDOUT: !24 = !{null}
// CHECK:STDOUT: !25 = !DILocation(line: 7, column: 19, scope: !22)
// CHECK:STDOUT: !26 = !DILocation(line: 7, column: 22, scope: !22)
// CHECK:STDOUT: !27 = !DILocation(line: 9, column: 21, scope: !22)
// CHECK:STDOUT: !28 = !DILocation(line: 9, column: 24, scope: !22)
// CHECK:STDOUT: !29 = !DILocation(line: 7, column: 3, scope: !22)
// CHECK:STDOUT: !30 = !DILocation(line: 9, column: 3, scope: !22)
// CHECK:STDOUT: !31 = !DILocation(line: 6, column: 1, scope: !22)
// CHECK:STDOUT: !32 = distinct !DISubprogram(name: "PassShort", linkageName: "_CPassShort.Main", scope: null, file: !7, line: 16, type: !33, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !37)
// CHECK:STDOUT: !33 = !DISubroutineType(types: !34)
// CHECK:STDOUT: !34 = !{null, !35, !36}
// CHECK:STDOUT: !35 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)
// CHECK:STDOUT: !36 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
// CHECK:STDOUT: !37 = !{!38, !39}
// CHECK:STDOUT: !38 = !DILocalVariable(arg: 1, scope: !32, type: !35)
// CHECK:STDOUT: !39 = !DILocalVariable(arg: 2, scope: !32, type: !36)
// CHECK:STDOUT: !40 = !DILocation(line: 17, column: 18, scope: !32)
// CHECK:STDOUT: !41 = !DILocation(line: 18, column: 18, scope: !32)
// CHECK:STDOUT: !42 = !DILocation(line: 19, column: 18, scope: !32)
// CHECK:STDOUT: !43 = !DILocation(line: 20, column: 18, scope: !32)
// CHECK:STDOUT: !44 = !DILocation(line: 17, column: 3, scope: !32)
// CHECK:STDOUT: !45 = !DILocation(line: 18, column: 3, scope: !32)
// CHECK:STDOUT: !46 = !DILocation(line: 19, column: 3, scope: !32)
// CHECK:STDOUT: !47 = !DILocation(line: 20, column: 3, scope: !32)
// CHECK:STDOUT: !48 = !DILocation(line: 16, column: 1, scope: !32)
// CHECK:STDOUT: ; ModuleID = 'import_struct.carbon'
// CHECK:STDOUT: source_filename = "import_struct.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: %struct.X = type { i32, i32, i32 }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress uwtable
// CHECK:STDOUT: define dso_local void @_Z11pass_struct1X.carbon_thunk(ptr noundef %0) #0 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: %agg.tmp = alloca %struct.X, align 4
// CHECK:STDOUT: %agg.tmp.coerce = alloca { i64, i32 }, align 4
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8, !tbaa !12
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8, !tbaa !12
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %agg.tmp, ptr align 4 %1, i64 12, i1 false), !tbaa.struct !15
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %agg.tmp.coerce, ptr align 4 %agg.tmp, i64 12, i1 false)
// CHECK:STDOUT: %2 = getelementptr inbounds nuw { i64, i32 }, ptr %agg.tmp.coerce, i32 0, i32 0
// CHECK:STDOUT: %3 = load i64, ptr %2, align 4
// CHECK:STDOUT: %4 = getelementptr inbounds nuw { i64, i32 }, ptr %agg.tmp.coerce, i32 0, i32 1
// CHECK:STDOUT: %5 = load i32, ptr %4, align 4
// CHECK:STDOUT: call void @_Z11pass_struct1X(i64 %3, i32 %5)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z11pass_struct1X(i64, i32) #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: nounwind
// CHECK:STDOUT: define void @_CTest.Main() #3 !dbg !16 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %x.var = alloca [12 x i8], align 1, !dbg !19
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %x.var), !dbg !19
// CHECK:STDOUT: %.loc8_4.a = getelementptr inbounds nuw [12 x i8], ptr %x.var, i32 0, i32 0, !dbg !20
// CHECK:STDOUT: store i32 1, ptr %.loc8_4.a, align 4, !dbg !20
// CHECK:STDOUT: %.loc9_4.b = getelementptr inbounds nuw [12 x i8], ptr %x.var, i32 0, i32 4, !dbg !21
// CHECK:STDOUT: store i32 2, ptr %.loc9_4.b, align 4, !dbg !21
// CHECK:STDOUT: %.loc10_4.c = getelementptr inbounds nuw [12 x i8], ptr %x.var, i32 0, i32 8, !dbg !22
// CHECK:STDOUT: store i32 3, ptr %.loc10_4.c, align 4, !dbg !22
// CHECK:STDOUT: call void @_Z11pass_struct1X.carbon_thunk(ptr %x.var), !dbg !23
// CHECK:STDOUT: ret void, !dbg !24
// 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)) #4
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.memcpy.p0.p0.i64, { 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { alwaysinline mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #3 = { nounwind }
// CHECK:STDOUT: attributes #4 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4, !5}
// CHECK:STDOUT: !llvm.dbg.cu = !{!6}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!8}
// 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 2}
// CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !5 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !6 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !7, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !7 = !DIFile(filename: "import_struct.carbon", directory: "")
// CHECK:STDOUT: !8 = !{!9, !9, i64 0}
// CHECK:STDOUT: !9 = !{!"int", !10, i64 0}
// CHECK:STDOUT: !10 = !{!"omnipotent char", !11, i64 0}
// CHECK:STDOUT: !11 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !12 = !{!13, !13, i64 0}
// CHECK:STDOUT: !13 = !{!"p1 _ZTS1X", !14, i64 0}
// CHECK:STDOUT: !14 = !{!"any pointer", !10, i64 0}
// CHECK:STDOUT: !15 = !{i64 0, i64 4, !8, i64 4, i64 4, !8, i64 8, i64 4, !8}
// CHECK:STDOUT: !16 = distinct !DISubprogram(name: "Test", linkageName: "_CTest.Main", scope: null, file: !7, line: 6, type: !17, spFlags: DISPFlagDefinition, unit: !6)
// CHECK:STDOUT: !17 = !DISubroutineType(types: !18)
// CHECK:STDOUT: !18 = !{null}
// CHECK:STDOUT: !19 = !DILocation(line: 7, column: 3, scope: !16)
// CHECK:STDOUT: !20 = !DILocation(line: 8, column: 3, scope: !16)
// CHECK:STDOUT: !21 = !DILocation(line: 9, column: 3, scope: !16)
// CHECK:STDOUT: !22 = !DILocation(line: 10, column: 3, scope: !16)
// CHECK:STDOUT: !23 = !DILocation(line: 11, column: 3, scope: !16)
// CHECK:STDOUT: !24 = !DILocation(line: 6, column: 1, scope: !16)
// CHECK:STDOUT: ; ModuleID = 'import_class_with_nontrivial_copy.carbon'
// CHECK:STDOUT: source_filename = "import_class_with_nontrivial_copy.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.Y = type { i32, i32, i32 }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress uwtable
// CHECK:STDOUT: define dso_local void @_Z11pass_struct1Y.carbon_thunk(ptr noundef %0) #0 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: %agg.tmp = alloca %class.Y, align 4
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8, !tbaa !12
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8, !tbaa !12
// CHECK:STDOUT: call void @_ZN1YC1ERKS_(ptr noundef nonnull align 4 dereferenceable(12) %agg.tmp, ptr noundef nonnull align 4 dereferenceable(12) %1)
// CHECK:STDOUT: call void @_Z11pass_struct1Y(ptr dead_on_return noundef %agg.tmp)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z11pass_struct1Y(ptr dead_on_return noundef) #1
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_ZN1YC1ERKS_(ptr noundef nonnull align 4 dereferenceable(12), ptr noundef nonnull align 4 dereferenceable(12)) unnamed_addr #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassRefExpr.Main() #2 !dbg !15 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %y.var = alloca [12 x i8], align 1, !dbg !18
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %y.var), !dbg !18
// CHECK:STDOUT: %.loc8_4.a = getelementptr inbounds nuw [12 x i8], ptr %y.var, i32 0, i32 0, !dbg !19
// CHECK:STDOUT: store i32 1, ptr %.loc8_4.a, align 4, !dbg !19
// CHECK:STDOUT: %.loc9_4.b = getelementptr inbounds nuw [12 x i8], ptr %y.var, i32 0, i32 4, !dbg !20
// CHECK:STDOUT: store i32 2, ptr %.loc9_4.b, align 4, !dbg !20
// CHECK:STDOUT: %.loc10_4.c = getelementptr inbounds nuw [12 x i8], ptr %y.var, i32 0, i32 8, !dbg !21
// CHECK:STDOUT: store i32 3, ptr %.loc10_4.c, align 4, !dbg !21
// CHECK:STDOUT: call void @_Z11pass_struct1Y.carbon_thunk(ptr %y.var), !dbg !22
// CHECK:STDOUT: ret void, !dbg !23
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CMake.Main(ptr sret([12 x i8]))
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassInitExpr.Main() #2 !dbg !24 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc17_24.1.temp = alloca [12 x i8], align 1, !dbg !25
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc17_24.1.temp), !dbg !25
// CHECK:STDOUT: call void @_CMake.Main(ptr %.loc17_24.1.temp), !dbg !25
// CHECK:STDOUT: call void @_Z11pass_struct1Y.carbon_thunk(ptr %.loc17_24.1.temp), !dbg !26
// CHECK:STDOUT: ret void, !dbg !27
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CPassValueExpr.Main(ptr %y) #2 !dbg !28 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_Z11pass_struct1Y.carbon_thunk(ptr %y), !dbg !34
// CHECK:STDOUT: ret void, !dbg !35
// 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)) #3
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { alwaysinline mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #2 = { nounwind }
// CHECK:STDOUT: attributes #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4, !5}
// CHECK:STDOUT: !llvm.dbg.cu = !{!6}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!8}
// 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 2}
// CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !5 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !6 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !7, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !7 = !DIFile(filename: "import_class_with_nontrivial_copy.carbon", directory: "")
// CHECK:STDOUT: !8 = !{!9, !9, i64 0}
// CHECK:STDOUT: !9 = !{!"int", !10, i64 0}
// CHECK:STDOUT: !10 = !{!"omnipotent char", !11, i64 0}
// CHECK:STDOUT: !11 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !12 = !{!13, !13, i64 0}
// CHECK:STDOUT: !13 = !{!"p1 _ZTS1Y", !14, i64 0}
// CHECK:STDOUT: !14 = !{!"any pointer", !10, i64 0}
// CHECK:STDOUT: !15 = distinct !DISubprogram(name: "PassRefExpr", linkageName: "_CPassRefExpr.Main", scope: null, file: !7, line: 6, type: !16, spFlags: DISPFlagDefinition, unit: !6)
// CHECK:STDOUT: !16 = !DISubroutineType(types: !17)
// CHECK:STDOUT: !17 = !{null}
// CHECK:STDOUT: !18 = !DILocation(line: 7, column: 3, scope: !15)
// CHECK:STDOUT: !19 = !DILocation(line: 8, column: 3, scope: !15)
// CHECK:STDOUT: !20 = !DILocation(line: 9, column: 3, scope: !15)
// CHECK:STDOUT: !21 = !DILocation(line: 10, column: 3, scope: !15)
// CHECK:STDOUT: !22 = !DILocation(line: 11, column: 3, scope: !15)
// CHECK:STDOUT: !23 = !DILocation(line: 6, column: 1, scope: !15)
// CHECK:STDOUT: !24 = distinct !DISubprogram(name: "PassInitExpr", linkageName: "_CPassInitExpr.Main", scope: null, file: !7, line: 16, type: !16, spFlags: DISPFlagDefinition, unit: !6)
// CHECK:STDOUT: !25 = !DILocation(line: 17, column: 19, scope: !24)
// CHECK:STDOUT: !26 = !DILocation(line: 17, column: 3, scope: !24)
// CHECK:STDOUT: !27 = !DILocation(line: 16, column: 1, scope: !24)
// CHECK:STDOUT: !28 = distinct !DISubprogram(name: "PassValueExpr", linkageName: "_CPassValueExpr.Main", scope: null, file: !7, line: 20, type: !29, spFlags: DISPFlagDefinition, unit: !6, 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: 8)
// CHECK:STDOUT: !32 = !{!33}
// CHECK:STDOUT: !33 = !DILocalVariable(arg: 1, scope: !28, type: !31)
// CHECK:STDOUT: !34 = !DILocation(line: 21, column: 3, scope: !28)
// CHECK:STDOUT: !35 = !DILocation(line: 20, column: 1, scope: !28)
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