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carbon-lang/toolchain/lower/testdata/var/global.carbon
T
josh11bandJosh L 832d46f01b Update LLVM (#7221) 
Assisted-by: Google Antigravity

---------

Co-authored-by: Josh L <josh11b@users.noreply.github.com>
2026-05-18 17:06:58 +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/var/global.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/var/global.carbon
// TODO: We should initialize all of these variables statically rather than on startup.
// --- simple.carbon
library "[[@TEST_NAME]]";
var a: i32 = 1;
fn GetA() -> i32* { return &a; }
// --- var_in_tuple.carbon
library "[[@TEST_NAME]]";
let (var b: i32, var c: i32) = (2, 3);
fn GetB() -> i32* { return &b; }
fn GetC() -> i32* { return &c; }
// --- tuple_in_var.carbon
library "[[@TEST_NAME]]";
var (d: i32, e: i32) = (4, 5);
fn GetD() -> i32* { return &d; }
fn GetE() -> i32* { return &e; }
// --- unnamed.carbon
library "[[@TEST_NAME]]";
var (_: i32, x: i32) = (1, 2);
var (_: i32, _: i32) = (3, 4);
// CHECK:STDOUT: ; ModuleID = 'simple.carbon'
// CHECK:STDOUT: source_filename = "simple.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @_Ca.Main = global i32 0
// CHECK:STDOUT: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 0, ptr @_C__global_init.Main, ptr null }]
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CGetA.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret ptr @_Ca.Main, !dbg !8
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define internal void @_C__global_init.Main() #0 !dbg !9 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: store i32 1, ptr @_Ca.Main, align 4, !dbg !12
// CHECK:STDOUT: ret void, !dbg !13
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "simple.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "GetA", linkageName: "_CGetA.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7}
// CHECK:STDOUT: !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !8 = !DILocation(line: 5, column: 21, scope: !4)
// CHECK:STDOUT: !9 = distinct !DISubprogram(name: "__global_init", linkageName: "_C__global_init.Main", scope: null, file: !3, type: !10, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !10 = !DISubroutineType(types: !11)
// CHECK:STDOUT: !11 = !{null}
// CHECK:STDOUT: !12 = !DILocation(line: 4, column: 1, scope: !9)
// CHECK:STDOUT: !13 = !DILocation(line: 0, scope: !9)
// CHECK:STDOUT: ; ModuleID = 'var_in_tuple.carbon'
// CHECK:STDOUT: source_filename = "var_in_tuple.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @_Cb.Main = global i32 0
// CHECK:STDOUT: @_Cc.Main = global i32 0
// CHECK:STDOUT: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 0, ptr @_C__global_init.Main, ptr null }]
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CGetB.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret ptr @_Cb.Main, !dbg !8
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CGetC.Main() #0 !dbg !9 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret ptr @_Cc.Main, !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define internal void @_C__global_init.Main() #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: store i32 2, ptr @_Cb.Main, align 4, !dbg !14
// CHECK:STDOUT: store i32 3, ptr @_Cc.Main, align 4, !dbg !15
// CHECK:STDOUT: ret void, !dbg !16
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "var_in_tuple.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "GetB", linkageName: "_CGetB.Main", scope: null, file: !3, line: 6, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7}
// CHECK:STDOUT: !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !8 = !DILocation(line: 6, column: 21, scope: !4)
// CHECK:STDOUT: !9 = distinct !DISubprogram(name: "GetC", linkageName: "_CGetC.Main", scope: null, file: !3, line: 7, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !10 = !DILocation(line: 7, column: 21, scope: !9)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "__global_init", linkageName: "_C__global_init.Main", scope: null, file: !3, type: !12, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !12 = !DISubroutineType(types: !13)
// CHECK:STDOUT: !13 = !{null}
// CHECK:STDOUT: !14 = !DILocation(line: 4, column: 6, scope: !11)
// CHECK:STDOUT: !15 = !DILocation(line: 4, column: 18, scope: !11)
// CHECK:STDOUT: !16 = !DILocation(line: 0, scope: !11)
// CHECK:STDOUT: ; ModuleID = 'tuple_in_var.carbon'
// CHECK:STDOUT: source_filename = "tuple_in_var.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @_Cd.Main = global { i32, i32 } zeroinitializer
// CHECK:STDOUT: @tuple.0a0.loc4_1 = internal constant { i32, i32 } { i32 4, i32 5 }
// CHECK:STDOUT: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 0, ptr @_C__global_init.Main, ptr null }]
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CGetD.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret ptr @_Cd.Main, !dbg !8
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define ptr @_CGetE.Main() #0 !dbg !9 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret ptr getelementptr inbounds nuw ({ i32, i32 }, ptr @_Cd.Main, i32 0, i32 1), !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define internal void @_C__global_init.Main() #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 @_Cd.Main, ptr align 4 @tuple.0a0.loc4_1, i64 8, i1 false), !dbg !14
// CHECK:STDOUT: ret void, !dbg !15
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync 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) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @_Cd.Main, { 0, 2, 1 }
// 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}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "tuple_in_var.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "GetD", linkageName: "_CGetD.Main", scope: null, file: !3, line: 6, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7}
// CHECK:STDOUT: !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !8 = !DILocation(line: 6, column: 21, scope: !4)
// CHECK:STDOUT: !9 = distinct !DISubprogram(name: "GetE", linkageName: "_CGetE.Main", scope: null, file: !3, line: 7, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !10 = !DILocation(line: 7, column: 21, scope: !9)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "__global_init", linkageName: "_C__global_init.Main", scope: null, file: !3, type: !12, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !12 = !DISubroutineType(types: !13)
// CHECK:STDOUT: !13 = !{null}
// CHECK:STDOUT: !14 = !DILocation(line: 4, column: 1, scope: !11)
// CHECK:STDOUT: !15 = !DILocation(line: 0, scope: !11)
// CHECK:STDOUT: ; ModuleID = 'unnamed.carbon'
// CHECK:STDOUT: source_filename = "unnamed.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @_Cx.Main = global { i32, i32 } zeroinitializer
// CHECK:STDOUT: @var.anon.var_patt.loc5 = internal global { i32, i32 } zeroinitializer
// CHECK:STDOUT: @tuple.21c.loc4_1 = internal constant { i32, i32 } { i32 1, i32 2 }
// CHECK:STDOUT: @tuple.ffd.loc5_1 = internal constant { i32, i32 } { i32 3, i32 4 }
// CHECK:STDOUT: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 0, ptr @_C__global_init.Main, ptr null }]
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define internal void @_C__global_init.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 @_Cx.Main, ptr align 4 @tuple.21c.loc4_1, i64 8, i1 false), !dbg !7
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 @var.anon.var_patt.loc5, ptr align 4 @tuple.ffd.loc5_1, i64 8, i1 false), !dbg !8
// CHECK:STDOUT: ret void, !dbg !9
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync 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) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.memcpy.p0.p0.i64, { 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}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "unnamed.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "__global_init", linkageName: "_C__global_init.Main", scope: null, file: !3, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 4, column: 1, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 5, column: 1, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 0, scope: !4)
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