Files
carbon-lang/toolchain/lower/testdata/struct/layout.carbon
T
Richard Smith cefa0397bb More fixes to package and library fingerprinting. (#7297)
Fix import logic to make all imported packages be children of the
`NameScopeId::Package` scope. Previously, indirectly-imported packages
would end up as children of their importing package's scope, which
resulted in them not being treated as packages at all, and in particular
not being fingerprinted as packages.

Fixing that caused a failure in the fingerprinting logic as we started
to encounter packages with no correspoding import scopes. Instead of
looking for import scopes, use a simpler mechanism to map packages to
their package names, and clean up.

Unfortunately the latter change churns all the fingerprints again :(
Hopefully this is the last time for a while.
2026-06-04 17:41:46 +00:00

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24 KiB
Plaintext

// 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/struct/layout.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/struct/layout.carbon
// --- no_padding.carbon
library "[[@TEST_NAME]]";
fn G(p: i32*);
fn F() {
// LLVM {i32, i32, i32} matches the Carbon layout, so we use it.
var no_padding: {.x: i32, .y: i32, .z: i32};
G(&no_padding.x);
G(&no_padding.y);
G(&no_padding.z);
}
// --- avoid_tail_padding.carbon
library "[[@TEST_NAME]]";
fn G(p: i32*);
fn F() {
// LLVM {ptr, i32} would have a size of 16, so we use a packed struct.
var avoid_tail_padding: {.x: ()*, .y: i32};
G(&avoid_tail_padding.y);
}
// --- use_tail_padding.carbon
library "[[@TEST_NAME]]";
fn G(p: i32*);
fn F() {
// LLVM {ptr, i32} would have a size of 16, so we use a packed struct as the
// type of `.a`. `.b` goes in the tail padding.
var use_tail_padding: {.a: {.x: ()*, .y: i32}, .b: i32};
G(&use_tail_padding.a.y);
G(&use_tail_padding.b);
}
// --- implicit_padding.carbon
library "[[@TEST_NAME]]";
fn G(p: ()**);
fn F() {
// LLVM {<{ptr, i32}>, ptr} inserts the right padding before `.b`, so we use
// it directly.
var implicit_padding: {.a: {.x: ()*, .y: i32}, .b: ()*};
G(&implicit_padding.a.x);
G(&implicit_padding.b);
}
// --- insert_padding.carbon
library "[[@TEST_NAME]]";
fn G(p: ()**);
fn F() {
// LLVM {<{i32, i32, i32}>, ptr, i32} would have extra tail padding, so we use
// a packed struct. That requires that we explicitly add padding between `.a`
// and `.b`.
var insert_padding: {.a: {.x: i32, .y: i32, .z: i32}, .b: ()*, .c: i32};
G(&insert_padding.b);
}
// CHECK:STDOUT: ; ModuleID = 'no_padding.carbon'
// CHECK:STDOUT: source_filename = "no_padding.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CG.Main(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CF.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %no_padding.var = alloca { i32, i32, i32 }, align 4, !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %no_padding.var), !dbg !7
// CHECK:STDOUT: %.loc8.x = getelementptr inbounds nuw { i32, i32, i32 }, ptr %no_padding.var, i32 0, i32 0, !dbg !8
// CHECK:STDOUT: call void @_CG.Main(ptr %.loc8.x), !dbg !9
// CHECK:STDOUT: %.loc9.y = getelementptr inbounds nuw { i32, i32, i32 }, ptr %no_padding.var, i32 0, i32 1, !dbg !10
// CHECK:STDOUT: call void @_CG.Main(ptr %.loc9.y), !dbg !11
// CHECK:STDOUT: %.loc10.z = getelementptr inbounds nuw { i32, i32, i32 }, ptr %no_padding.var, i32 0, i32 2, !dbg !12
// CHECK:STDOUT: call void @_CG.Main(ptr %.loc10.z), !dbg !13
// CHECK:STDOUT: call void @"_COp.95808ad559cb17b5:core.Destroy.Core"(ptr %no_padding.var), !dbg !7
// CHECK:STDOUT: ret void, !dbg !14
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.5e27612b9dd31a14:core.Destroy.Core"(ptr %self) #0 !dbg !15 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !21
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.95808ad559cb17b5:core.Destroy.Core"(ptr %self) #0 !dbg !22 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !28
// 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: 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: "no_padding.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 7, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 8, column: 6, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 8, column: 3, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 9, column: 6, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 9, column: 3, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 10, column: 6, scope: !4)
// CHECK:STDOUT: !13 = !DILocation(line: 10, column: 3, scope: !4)
// CHECK:STDOUT: !14 = !DILocation(line: 5, column: 1, scope: !4)
// CHECK:STDOUT: !15 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5e27612b9dd31a14:core.Destroy.Core", scope: null, file: !3, line: 7, type: !16, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !19)
// CHECK:STDOUT: !16 = !DISubroutineType(types: !17)
// CHECK:STDOUT: !17 = !{null, !18}
// CHECK:STDOUT: !18 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !19 = !{!20}
// CHECK:STDOUT: !20 = !DILocalVariable(arg: 1, scope: !15, type: !18)
// CHECK:STDOUT: !21 = !DILocation(line: 7, column: 3, scope: !15)
// CHECK:STDOUT: !22 = distinct !DISubprogram(name: "Op", linkageName: "_COp.95808ad559cb17b5:core.Destroy.Core", scope: null, file: !3, line: 7, type: !23, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !26)
// CHECK:STDOUT: !23 = !DISubroutineType(types: !24)
// CHECK:STDOUT: !24 = !{null, !25}
// CHECK:STDOUT: !25 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !26 = !{!27}
// CHECK:STDOUT: !27 = !DILocalVariable(arg: 1, scope: !22, type: !25)
// CHECK:STDOUT: !28 = !DILocation(line: 7, column: 3, scope: !22)
// CHECK:STDOUT: ; ModuleID = 'avoid_tail_padding.carbon'
// CHECK:STDOUT: source_filename = "avoid_tail_padding.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CG.Main(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CF.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %avoid_tail_padding.var = alloca <{ ptr, i32 }>, align 8, !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %avoid_tail_padding.var), !dbg !7
// CHECK:STDOUT: %.loc8.y = getelementptr inbounds nuw <{ ptr, i32 }>, ptr %avoid_tail_padding.var, i32 0, i32 1, !dbg !8
// CHECK:STDOUT: call void @_CG.Main(ptr %.loc8.y), !dbg !9
// CHECK:STDOUT: call void @"_COp.6e3a24383a9179dd:core.Destroy.Core"(ptr %avoid_tail_padding.var), !dbg !7
// CHECK:STDOUT: ret void, !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.5e27612b9dd31a14:core.Destroy.Core"(ptr %self) #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !17
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.6e3a24383a9179dd:core.Destroy.Core"(ptr %self) #0 !dbg !18 {
// CHECK:STDOUT: entry:
// 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)) #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: "avoid_tail_padding.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 7, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 8, column: 6, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 8, column: 3, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 5, column: 1, scope: !4)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5e27612b9dd31a14:core.Destroy.Core", scope: null, file: !3, line: 7, type: !12, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !15)
// CHECK:STDOUT: !12 = !DISubroutineType(types: !13)
// CHECK:STDOUT: !13 = !{null, !14}
// CHECK:STDOUT: !14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !15 = !{!16}
// CHECK:STDOUT: !16 = !DILocalVariable(arg: 1, scope: !11, type: !14)
// CHECK:STDOUT: !17 = !DILocation(line: 7, column: 3, scope: !11)
// CHECK:STDOUT: !18 = distinct !DISubprogram(name: "Op", linkageName: "_COp.6e3a24383a9179dd:core.Destroy.Core", scope: null, file: !3, line: 7, type: !19, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
// CHECK:STDOUT: !19 = !DISubroutineType(types: !20)
// CHECK:STDOUT: !20 = !{null, !21}
// CHECK:STDOUT: !21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !22 = !{!23}
// CHECK:STDOUT: !23 = !DILocalVariable(arg: 1, scope: !18, type: !21)
// CHECK:STDOUT: !24 = !DILocation(line: 7, column: 3, scope: !18)
// CHECK:STDOUT: ; ModuleID = 'use_tail_padding.carbon'
// CHECK:STDOUT: source_filename = "use_tail_padding.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CG.Main(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CF.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %use_tail_padding.var = alloca { <{ ptr, i32 }>, i32 }, align 8, !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %use_tail_padding.var), !dbg !7
// CHECK:STDOUT: %.loc9_22.a = getelementptr inbounds nuw { <{ ptr, i32 }>, i32 }, ptr %use_tail_padding.var, i32 0, i32 0, !dbg !8
// CHECK:STDOUT: %.loc9_24.y = getelementptr inbounds nuw <{ ptr, i32 }>, ptr %.loc9_22.a, i32 0, i32 1, !dbg !8
// CHECK:STDOUT: call void @_CG.Main(ptr %.loc9_24.y), !dbg !9
// CHECK:STDOUT: %.loc10.b = getelementptr inbounds nuw { <{ ptr, i32 }>, i32 }, ptr %use_tail_padding.var, i32 0, i32 1, !dbg !10
// CHECK:STDOUT: call void @_CG.Main(ptr %.loc10.b), !dbg !11
// CHECK:STDOUT: call void @"_COp.a68f8a656015afed:core.Destroy.Core"(ptr %use_tail_padding.var), !dbg !7
// CHECK:STDOUT: ret void, !dbg !12
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.5e27612b9dd31a14:core.Destroy.Core"(ptr %self) #0 !dbg !13 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !19
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.6e3a24383a9179dd:core.Destroy.Core"(ptr %self) #0 !dbg !20 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !26
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.a68f8a656015afed:core.Destroy.Core"(ptr %self) #0 !dbg !27 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !30
// 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: 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: "use_tail_padding.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 8, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 9, column: 6, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 9, column: 3, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 10, column: 6, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 10, column: 3, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 5, column: 1, scope: !4)
// CHECK:STDOUT: !13 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5e27612b9dd31a14:core.Destroy.Core", scope: null, file: !3, line: 8, type: !14, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !17)
// CHECK:STDOUT: !14 = !DISubroutineType(types: !15)
// CHECK:STDOUT: !15 = !{null, !16}
// CHECK:STDOUT: !16 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !17 = !{!18}
// CHECK:STDOUT: !18 = !DILocalVariable(arg: 1, scope: !13, type: !16)
// CHECK:STDOUT: !19 = !DILocation(line: 8, column: 3, scope: !13)
// CHECK:STDOUT: !20 = distinct !DISubprogram(name: "Op", linkageName: "_COp.6e3a24383a9179dd:core.Destroy.Core", scope: null, file: !3, line: 8, type: !21, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !24)
// CHECK:STDOUT: !21 = !DISubroutineType(types: !22)
// CHECK:STDOUT: !22 = !{null, !23}
// CHECK:STDOUT: !23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !24 = !{!25}
// CHECK:STDOUT: !25 = !DILocalVariable(arg: 1, scope: !20, type: !23)
// CHECK:STDOUT: !26 = !DILocation(line: 8, column: 3, scope: !20)
// CHECK:STDOUT: !27 = distinct !DISubprogram(name: "Op", linkageName: "_COp.a68f8a656015afed:core.Destroy.Core", scope: null, file: !3, line: 8, type: !21, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !28)
// CHECK:STDOUT: !28 = !{!29}
// CHECK:STDOUT: !29 = !DILocalVariable(arg: 1, scope: !27, type: !23)
// CHECK:STDOUT: !30 = !DILocation(line: 8, column: 3, scope: !27)
// CHECK:STDOUT: ; ModuleID = 'implicit_padding.carbon'
// CHECK:STDOUT: source_filename = "implicit_padding.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CG.Main(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CF.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %implicit_padding.var = alloca { <{ ptr, i32 }>, ptr }, align 8, !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %implicit_padding.var), !dbg !7
// CHECK:STDOUT: %.loc9_22.a = getelementptr inbounds nuw { <{ ptr, i32 }>, ptr }, ptr %implicit_padding.var, i32 0, i32 0, !dbg !8
// CHECK:STDOUT: %.loc9_24.x = getelementptr inbounds nuw <{ ptr, i32 }>, ptr %.loc9_22.a, i32 0, i32 0, !dbg !8
// CHECK:STDOUT: call void @_CG.Main(ptr %.loc9_24.x), !dbg !9
// CHECK:STDOUT: %.loc10.b = getelementptr inbounds nuw { <{ ptr, i32 }>, ptr }, ptr %implicit_padding.var, i32 0, i32 1, !dbg !10
// CHECK:STDOUT: call void @_CG.Main(ptr %.loc10.b), !dbg !11
// CHECK:STDOUT: call void @"_COp.c54455699b83e3bd:core.Destroy.Core"(ptr %implicit_padding.var), !dbg !7
// CHECK:STDOUT: ret void, !dbg !12
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.5e27612b9dd31a14:core.Destroy.Core"(ptr %self) #0 !dbg !13 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !19
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.6e3a24383a9179dd:core.Destroy.Core"(ptr %self) #0 !dbg !20 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !26
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.c54455699b83e3bd:core.Destroy.Core"(ptr %self) #0 !dbg !27 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !30
// 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: 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: "implicit_padding.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 8, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 9, column: 6, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 9, column: 3, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 10, column: 6, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 10, column: 3, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 5, column: 1, scope: !4)
// CHECK:STDOUT: !13 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5e27612b9dd31a14:core.Destroy.Core", scope: null, file: !3, line: 8, type: !14, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !17)
// CHECK:STDOUT: !14 = !DISubroutineType(types: !15)
// CHECK:STDOUT: !15 = !{null, !16}
// CHECK:STDOUT: !16 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !17 = !{!18}
// CHECK:STDOUT: !18 = !DILocalVariable(arg: 1, scope: !13, type: !16)
// CHECK:STDOUT: !19 = !DILocation(line: 8, column: 3, scope: !13)
// CHECK:STDOUT: !20 = distinct !DISubprogram(name: "Op", linkageName: "_COp.6e3a24383a9179dd:core.Destroy.Core", scope: null, file: !3, line: 8, type: !21, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !24)
// CHECK:STDOUT: !21 = !DISubroutineType(types: !22)
// CHECK:STDOUT: !22 = !{null, !23}
// CHECK:STDOUT: !23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !24 = !{!25}
// CHECK:STDOUT: !25 = !DILocalVariable(arg: 1, scope: !20, type: !23)
// CHECK:STDOUT: !26 = !DILocation(line: 8, column: 3, scope: !20)
// CHECK:STDOUT: !27 = distinct !DISubprogram(name: "Op", linkageName: "_COp.c54455699b83e3bd:core.Destroy.Core", scope: null, file: !3, line: 8, type: !21, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !28)
// CHECK:STDOUT: !28 = !{!29}
// CHECK:STDOUT: !29 = !DILocalVariable(arg: 1, scope: !27, type: !23)
// CHECK:STDOUT: !30 = !DILocation(line: 8, column: 3, scope: !27)
// CHECK:STDOUT: ; ModuleID = 'insert_padding.carbon'
// CHECK:STDOUT: source_filename = "insert_padding.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CG.Main(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CF.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %insert_padding.var = alloca <{ <{ { i32, i32, i32 }, [4 x i8] }>, ptr, i32 }>, align 8, !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %insert_padding.var), !dbg !7
// CHECK:STDOUT: %.loc10.b = getelementptr inbounds nuw <{ <{ { i32, i32, i32 }, [4 x i8] }>, ptr, i32 }>, ptr %insert_padding.var, i32 0, i32 1, !dbg !8
// CHECK:STDOUT: call void @_CG.Main(ptr %.loc10.b), !dbg !9
// CHECK:STDOUT: call void @"_COp.383dc994920f31dc:core.Destroy.Core"(ptr %insert_padding.var), !dbg !7
// CHECK:STDOUT: ret void, !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.5e27612b9dd31a14:core.Destroy.Core"(ptr %self) #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !17
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.95808ad559cb17b5:core.Destroy.Core"(ptr %self) #0 !dbg !18 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !24
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.383dc994920f31dc:core.Destroy.Core"(ptr %self) #0 !dbg !25 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !28
// 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: 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: "insert_padding.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 9, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 10, column: 6, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 10, column: 3, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 5, column: 1, scope: !4)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5e27612b9dd31a14:core.Destroy.Core", scope: null, file: !3, line: 9, type: !12, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !15)
// CHECK:STDOUT: !12 = !DISubroutineType(types: !13)
// CHECK:STDOUT: !13 = !{null, !14}
// CHECK:STDOUT: !14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !15 = !{!16}
// CHECK:STDOUT: !16 = !DILocalVariable(arg: 1, scope: !11, type: !14)
// CHECK:STDOUT: !17 = !DILocation(line: 9, column: 3, scope: !11)
// CHECK:STDOUT: !18 = distinct !DISubprogram(name: "Op", linkageName: "_COp.95808ad559cb17b5:core.Destroy.Core", scope: null, file: !3, line: 9, type: !19, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
// CHECK:STDOUT: !19 = !DISubroutineType(types: !20)
// CHECK:STDOUT: !20 = !{null, !21}
// CHECK:STDOUT: !21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !22 = !{!23}
// CHECK:STDOUT: !23 = !DILocalVariable(arg: 1, scope: !18, type: !21)
// CHECK:STDOUT: !24 = !DILocation(line: 9, column: 3, scope: !18)
// CHECK:STDOUT: !25 = distinct !DISubprogram(name: "Op", linkageName: "_COp.383dc994920f31dc:core.Destroy.Core", scope: null, file: !3, line: 9, type: !19, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !26)
// CHECK:STDOUT: !26 = !{!27}
// CHECK:STDOUT: !27 = !DILocalVariable(arg: 1, scope: !25, type: !21)
// CHECK:STDOUT: !28 = !DILocation(line: 9, column: 3, scope: !25)