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void.carbon

void.carbon 21 KB
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  1. // Part of the Carbon Language project, under the Apache License v2.0 with LLVM
    2. 

  2. // Exceptions. See /LICENSE for license information.
    3. 

  3. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
    4. 

  4. //
    5. 

  5. // INCLUDE-FILE: toolchain/testing/testdata/min_prelude/full.carbon
    6. 

  6. //
    7. 

  7. // AUTOUPDATE
    8. 

  8. // TIP: To test this file alone, run:
    9. 

  9. // TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/interop/cpp/void.carbon
    10. 

  10. // TIP: To dump output, run:
    11. 

  11. // TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/void.carbon
    12. 

  12. 

  13. // --- void_ptr.h
    14. 

  14. 

  15. void take_void_ptr(void *p);
    16. 

  16. void take_const_void_ptr(const void *p);
    17. 

  17. void *return_void_ptr();
    18. 

  18. 

  19. // --- pass.carbon
    20. 

  20. 

  21. library "[[@TEST_NAME]]";
    22. 

  22. 

  23. import Cpp library "void_ptr.h";
    24. 

  24. 

  25. fn PassVoidPtr(a: Cpp.void*) {
    26. 

  26.   Cpp.take_void_ptr(a);
    27. 

  27. }
    28. 

  28. 

  29. fn PassIntPtr(a: Cpp.int*) {
    30. 

  30.   Cpp.take_void_ptr(a);
    31. 

  31. }
    32. 

  32. 

  33. fn PassIntPtrToConstVoidPtr(a: Cpp.int*) {
    34. 

  34.   Cpp.take_const_void_ptr(a);
    35. 

  35. }
    36. 

  36. 

  37. fn PassConstIntPtrToConstVoidPtr(a: const Cpp.int*) {
    38. 

  38.   Cpp.take_const_void_ptr(a);
    39. 

  39. }
    40. 

  40. 

  41. // --- receive.carbon
    42. 

  42. 

  43. library "[[@TEST_NAME]]";
    44. 

  44. 

  45. import Cpp library "void_ptr.h";
    46. 

  46. 

  47. fn ReceiveVoidPtr() -> Core.Optional(Cpp.void*) {
    48. 

  48.   return Cpp.return_void_ptr();
    49. 

  49. }
    50. 

  50. 

  51. fn ConvertFromVoidPtr(p: Cpp.void*) -> i32* {
    52. 

  52.   return p unsafe as i32*;
    53. 

  53. }
    54. 

  54. 

  55. fn ConvertFromConstVoidPtr(p: const Cpp.void*) -> const i32* {
    56. 

  56.   return p unsafe as const i32*;
    57. 

  57. }
    58. 

  58. 

  59. // CHECK:STDOUT: ; ModuleID = 'pass.carbon'
    60. 

  60. // CHECK:STDOUT: source_filename = "pass.carbon"
    61. 

  61. // 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"
    62. 

  62. // CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
    63. 

  63. // CHECK:STDOUT:
    64. 

  64. // CHECK:STDOUT: ; Function Attrs: nounwind
    65. 

  65. // CHECK:STDOUT: define void @_CPassVoidPtr.Main(ptr %a) #0 !dbg !12 {
    66. 

  66. // CHECK:STDOUT: entry:
    67. 

  67. // CHECK:STDOUT:   %.loc7_21.2.temp = alloca ptr, align 8, !dbg !18
    68. 

  68. // CHECK:STDOUT:   %U.binding.as_type.as.ImplicitAs.impl.Convert.call = call ptr @"_CConvert.e5cf8fcbb4feaae2:ImplicitAs.0f95c9e18c91e00a.Core.5c62f2dbad753cd9"(ptr %a), !dbg !18
    69. 

  69. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc7_21.2.temp), !dbg !18
    70. 

  70. // CHECK:STDOUT:   store ptr %U.binding.as_type.as.ImplicitAs.impl.Convert.call, ptr %.loc7_21.2.temp, align 8, !dbg !18
    71. 

  71. // CHECK:STDOUT:   %.loc7_21.4 = load ptr, ptr %.loc7_21.2.temp, align 8, !dbg !18
    72. 

  72. // CHECK:STDOUT:   call void @_Z13take_void_ptrPv(ptr %.loc7_21.4), !dbg !19
    73. 

  73. // CHECK:STDOUT:   ret void, !dbg !20
    74. 

  74. // CHECK:STDOUT: }
    75. 

  75. // CHECK:STDOUT:
    76. 

  76. // CHECK:STDOUT: declare void @_Z13take_void_ptrPv(ptr)
    77. 

  77. // CHECK:STDOUT:
    78. 

  78. // CHECK:STDOUT: ; Function Attrs: nounwind
    79. 

  79. // CHECK:STDOUT: define void @_CPassIntPtr.Main(ptr %a) #0 !dbg !21 {
    80. 

  80. // CHECK:STDOUT: entry:
    81. 

  81. // CHECK:STDOUT:   %.loc11_21.2.temp = alloca ptr, align 8, !dbg !24
    82. 

  82. // CHECK:STDOUT:   %U.binding.as_type.as.ImplicitAs.impl.Convert.call = call ptr @"_CConvert.e5cf8fcbb4feaae2:ImplicitAs.0f95c9e18c91e00a.Core.63e244d930b21b2a"(ptr %a), !dbg !24
    83. 

  83. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc11_21.2.temp), !dbg !24
    84. 

  84. // CHECK:STDOUT:   store ptr %U.binding.as_type.as.ImplicitAs.impl.Convert.call, ptr %.loc11_21.2.temp, align 8, !dbg !24
    85. 

  85. // CHECK:STDOUT:   %.loc11_21.4 = load ptr, ptr %.loc11_21.2.temp, align 8, !dbg !24
    86. 

  86. // CHECK:STDOUT:   call void @_Z13take_void_ptrPv(ptr %.loc11_21.4), !dbg !25
    87. 

  87. // CHECK:STDOUT:   ret void, !dbg !26
    88. 

  88. // CHECK:STDOUT: }
    89. 

  89. // CHECK:STDOUT:
    90. 

  90. // CHECK:STDOUT: ; Function Attrs: nounwind
    91. 

  91. // CHECK:STDOUT: define void @_CPassIntPtrToConstVoidPtr.Main(ptr %a) #0 !dbg !27 {
    92. 

  92. // CHECK:STDOUT: entry:
    93. 

  93. // CHECK:STDOUT:   %.loc15_27.2.temp = alloca ptr, align 8, !dbg !30
    94. 

  94. // CHECK:STDOUT:   %U.binding.as_type.as.ImplicitAs.impl.Convert.call = call ptr @"_CConvert.e5cf8fcbb4feaae2:ImplicitAs.0f95c9e18c91e00a.Core.3fcbaa3d70c86d44"(ptr %a), !dbg !30
    95. 

  95. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc15_27.2.temp), !dbg !30
    96. 

  96. // CHECK:STDOUT:   store ptr %U.binding.as_type.as.ImplicitAs.impl.Convert.call, ptr %.loc15_27.2.temp, align 8, !dbg !30
    97. 

  97. // CHECK:STDOUT:   %.loc15_27.4 = load ptr, ptr %.loc15_27.2.temp, align 8, !dbg !30
    98. 

  98. // CHECK:STDOUT:   call void @_Z19take_const_void_ptrPKv(ptr %.loc15_27.4), !dbg !31
    99. 

  99. // CHECK:STDOUT:   ret void, !dbg !32
    100. 

  100. // CHECK:STDOUT: }
    101. 

  101. // CHECK:STDOUT:
    102. 

  102. // CHECK:STDOUT: declare void @_Z19take_const_void_ptrPKv(ptr)
    103. 

  103. // CHECK:STDOUT:
    104. 

  104. // CHECK:STDOUT: ; Function Attrs: nounwind
    105. 

  105. // CHECK:STDOUT: define void @_CPassConstIntPtrToConstVoidPtr.Main(ptr %a) #0 !dbg !33 {
    106. 

  106. // CHECK:STDOUT: entry:
    107. 

  107. // CHECK:STDOUT:   %.loc19_27.2.temp = alloca ptr, align 8, !dbg !36
    108. 

  108. // CHECK:STDOUT:   %U.binding.as_type.as.ImplicitAs.impl.Convert.call = call ptr @"_CConvert.e5cf8fcbb4feaae2:ImplicitAs.0f95c9e18c91e00a.Core.3fcbaa3d70c86d44"(ptr %a), !dbg !36
    109. 

  109. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc19_27.2.temp), !dbg !36
    110. 

  110. // CHECK:STDOUT:   store ptr %U.binding.as_type.as.ImplicitAs.impl.Convert.call, ptr %.loc19_27.2.temp, align 8, !dbg !36
    111. 

  111. // CHECK:STDOUT:   %.loc19_27.4 = load ptr, ptr %.loc19_27.2.temp, align 8, !dbg !36
    112. 

  112. // CHECK:STDOUT:   call void @_Z19take_const_void_ptrPKv(ptr %.loc19_27.4), !dbg !37
    113. 

  113. // CHECK:STDOUT:   ret void, !dbg !38
    114. 

  114. // CHECK:STDOUT: }
    115. 

  115. // CHECK:STDOUT:
    116. 

  116. // CHECK:STDOUT: ; Function Attrs: nounwind
    117. 

  117. // CHECK:STDOUT: define linkonce_odr ptr @"_CConvert.e5cf8fcbb4feaae2:ImplicitAs.0f95c9e18c91e00a.Core.5c62f2dbad753cd9"(ptr %self) #0 !dbg !39 {
    118. 

  118. // CHECK:STDOUT:   %1 = call ptr @"_CConvert.90961d7b1ce4f089:OptionalAs.0e326e799dad0c64.Core.d2075df181ac34c1"(ptr %self), !dbg !45
    119. 

  119. // CHECK:STDOUT:   ret ptr %1, !dbg !46
    120. 

  120. // CHECK:STDOUT: }
    121. 

  121. // CHECK:STDOUT:
    122. 

  122. // CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
    123. 

  123. // CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #1
    124. 

  124. // CHECK:STDOUT:
    125. 

  125. // CHECK:STDOUT: ; Function Attrs: nounwind
    126. 

  126. // CHECK:STDOUT: define linkonce_odr ptr @"_CConvert.e5cf8fcbb4feaae2:ImplicitAs.0f95c9e18c91e00a.Core.63e244d930b21b2a"(ptr %self) #0 !dbg !47 {
    127. 

  127. // CHECK:STDOUT:   %1 = call ptr @"_CConvert.3667eb502d1ddfa9:OptionalAs.c7a50af9bdd61b43.Core.599fcf6815ccd825"(ptr %self), !dbg !50
    128. 

  128. // CHECK:STDOUT:   ret ptr %1, !dbg !51
    129. 

  129. // CHECK:STDOUT: }
    130. 

  130. // CHECK:STDOUT:
    131. 

  131. // CHECK:STDOUT: ; Function Attrs: nounwind
    132. 

  132. // CHECK:STDOUT: define linkonce_odr ptr @"_CConvert.e5cf8fcbb4feaae2:ImplicitAs.0f95c9e18c91e00a.Core.3fcbaa3d70c86d44"(ptr %self) #0 !dbg !52 {
    133. 

  133. // CHECK:STDOUT:   %1 = call ptr @"_CConvert.3667eb502d1ddfa9:OptionalAs.c7a50af9bdd61b43.Core.40332936f52138f0"(ptr %self), !dbg !55
    134. 

  134. // CHECK:STDOUT:   ret ptr %1, !dbg !56
    135. 

  135. // CHECK:STDOUT: }
    136. 

  136. // CHECK:STDOUT:
    137. 

  137. // CHECK:STDOUT: ; Function Attrs: nounwind
    138. 

  138. // CHECK:STDOUT: define linkonce_odr ptr @"_CConvert.90961d7b1ce4f089:OptionalAs.0e326e799dad0c64.Core.d2075df181ac34c1"(ptr %self) #0 !dbg !57 {
    139. 

  139. // CHECK:STDOUT:   %1 = call ptr @_CSome.Optional.Core.d2075df181ac34c1(ptr %self), !dbg !60
    140. 

  140. // CHECK:STDOUT:   ret ptr %1, !dbg !61
    141. 

  141. // CHECK:STDOUT: }
    142. 

  142. // CHECK:STDOUT:
    143. 

  143. // CHECK:STDOUT: ; Function Attrs: nounwind
    144. 

  144. // CHECK:STDOUT: define linkonce_odr ptr @"_CConvert.3667eb502d1ddfa9:OptionalAs.c7a50af9bdd61b43.Core.599fcf6815ccd825"(ptr %self) #0 !dbg !62 {
    145. 

  145. // CHECK:STDOUT:   %temp = alloca ptr, align 8, !dbg !65
    146. 

  146. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %temp), !dbg !65
    147. 

  147. // CHECK:STDOUT:   store ptr %self, ptr %temp, align 8, !dbg !65
    148. 

  148. // CHECK:STDOUT:   %1 = load ptr, ptr %temp, align 8, !dbg !65
    149. 

  149. // CHECK:STDOUT:   %2 = call ptr @_CSome.Optional.Core.d2075df181ac34c1(ptr %1), !dbg !66
    150. 

  150. // CHECK:STDOUT:   ret ptr %2, !dbg !67
    151. 

  151. // CHECK:STDOUT: }
    152. 

  152. // CHECK:STDOUT:
    153. 

  153. // CHECK:STDOUT: ; Function Attrs: nounwind
    154. 

  154. // CHECK:STDOUT: define linkonce_odr ptr @"_CConvert.3667eb502d1ddfa9:OptionalAs.c7a50af9bdd61b43.Core.40332936f52138f0"(ptr %self) #0 !dbg !68 {
    155. 

  155. // CHECK:STDOUT:   %temp = alloca ptr, align 8, !dbg !71
    156. 

  156. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %temp), !dbg !71
    157. 

  157. // CHECK:STDOUT:   %1 = call ptr @"_CConvert:thunk.e8f8f92d3d08d149:ImplicitAs.ffd58aeb29886b72.Core.b88d1103f417c6d4"(ptr %self), !dbg !71
    158. 

  158. // CHECK:STDOUT:   store ptr %1, ptr %temp, align 8, !dbg !71
    159. 

  159. // CHECK:STDOUT:   %2 = load ptr, ptr %temp, align 8, !dbg !71
    160. 

  160. // CHECK:STDOUT:   %3 = call ptr @_CSome.Optional.Core.d2075df181ac34c1(ptr %2), !dbg !72
    161. 

  161. // CHECK:STDOUT:   ret ptr %3, !dbg !73
    162. 

  162. // CHECK:STDOUT: }
    163. 

  163. // CHECK:STDOUT:
    164. 

  164. // CHECK:STDOUT: ; Function Attrs: nounwind
    165. 

  165. // CHECK:STDOUT: define linkonce_odr ptr @_CSome.Optional.Core.d2075df181ac34c1(ptr %value) #0 !dbg !74 {
    166. 

  166. // CHECK:STDOUT:   %1 = call ptr @"_CSome.e8f8f92d3d08d149:OptionalStorage.Core.a3238f3d1f6ba299"(ptr %value), !dbg !77
    167. 

  167. // CHECK:STDOUT:   ret ptr %1, !dbg !78
    168. 

  168. // CHECK:STDOUT: }
    169. 

  169. // CHECK:STDOUT:
    170. 

  170. // CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind
    171. 

  171. // CHECK:STDOUT: define linkonce_odr ptr @"_CConvert:thunk.e8f8f92d3d08d149:ImplicitAs.ffd58aeb29886b72.Core.b88d1103f417c6d4"(ptr %self) #2 !dbg !79 {
    172. 

  172. // CHECK:STDOUT:   ret ptr %self, !dbg !83
    173. 

  173. // CHECK:STDOUT: }
    174. 

  174. // CHECK:STDOUT:
    175. 

  175. // CHECK:STDOUT: ; Function Attrs: nounwind
    176. 

  176. // CHECK:STDOUT: define linkonce_odr ptr @"_CSome.e8f8f92d3d08d149:OptionalStorage.Core.a3238f3d1f6ba299"(ptr %self) #0 !dbg !84 {
    177. 

  177. // CHECK:STDOUT:   %1 = alloca ptr, align 8, !dbg !87
    178. 

  178. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %1), !dbg !87
    179. 

  179. // CHECK:STDOUT:   store ptr %self, ptr %1, align 8, !dbg !88
    180. 

  180. // CHECK:STDOUT:   %2 = load ptr, ptr %1, align 8, !dbg !89
    181. 

  181. // CHECK:STDOUT:   ret ptr %2, !dbg !90
    182. 

  182. // CHECK:STDOUT: }
    183. 

  183. // CHECK:STDOUT:
    184. 

  184. // CHECK:STDOUT: ; uselistorder directives
    185. 

  185. // CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 0, 1, 2, 6, 5, 4, 3 }
    186. 

  186. // CHECK:STDOUT: uselistorder ptr @"_CConvert.e5cf8fcbb4feaae2:ImplicitAs.0f95c9e18c91e00a.Core.3fcbaa3d70c86d44", { 1, 0 }
    187. 

  187. // CHECK:STDOUT: uselistorder ptr @_CSome.Optional.Core.d2075df181ac34c1, { 2, 1, 0 }
    188. 

  188. // CHECK:STDOUT:
    189. 

  189. // CHECK:STDOUT: attributes #0 = { nounwind }
    190. 

  190. // CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
    191. 

  191. // CHECK:STDOUT: attributes #2 = { alwaysinline nounwind }
    192. 

  192. // CHECK:STDOUT:
    193. 

  193. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4, !5}
    194. 

  194. // CHECK:STDOUT: !llvm.dbg.cu = !{!6}
    195. 

  195. // CHECK:STDOUT: !llvm.errno.tbaa = !{!8}
    196. 

  196. // CHECK:STDOUT:
    197. 

  197. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    198. 

  198. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    199. 

  199. // CHECK:STDOUT: !2 = !{i32 1, !"wchar_size", i32 4}
    200. 

  200. // CHECK:STDOUT: !3 = !{i32 8, !"PIC Level", i32 0}
    201. 

  201. // CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
    202. 

  202. // CHECK:STDOUT: !5 = !{i32 7, !"uwtable", i32 2}
    203. 

  203. // CHECK:STDOUT: !6 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !7, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    204. 

  204. // CHECK:STDOUT: !7 = !DIFile(filename: "pass.carbon", directory: "")
    205. 

  205. // CHECK:STDOUT: !8 = !{!9, !9, i64 0}
    206. 

  206. // CHECK:STDOUT: !9 = !{!"int", !10, i64 0}
    207. 

  207. // CHECK:STDOUT: !10 = !{!"omnipotent char", !11, i64 0}
    208. 

  208. // CHECK:STDOUT: !11 = !{!"Simple C++ TBAA"}
    209. 

  209. // CHECK:STDOUT: !12 = distinct !DISubprogram(name: "PassVoidPtr", linkageName: "_CPassVoidPtr.Main", scope: null, file: !7, line: 6, type: !13, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !16)
    210. 

  210. // CHECK:STDOUT: !13 = !DISubroutineType(types: !14)
    211. 

  211. // CHECK:STDOUT: !14 = !{null, !15}
    212. 

  212. // CHECK:STDOUT: !15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
    213. 

  213. // CHECK:STDOUT: !16 = !{!17}
    214. 

  214. // CHECK:STDOUT: !17 = !DILocalVariable(arg: 1, scope: !12, type: !15)
    215. 

  215. // CHECK:STDOUT: !18 = !DILocation(line: 7, column: 21, scope: !12)
    216. 

  216. // CHECK:STDOUT: !19 = !DILocation(line: 7, column: 3, scope: !12)
    217. 

  217. // CHECK:STDOUT: !20 = !DILocation(line: 6, column: 1, scope: !12)
    218. 

  218. // CHECK:STDOUT: !21 = distinct !DISubprogram(name: "PassIntPtr", linkageName: "_CPassIntPtr.Main", scope: null, file: !7, line: 10, type: !13, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !22)
    219. 

  219. // CHECK:STDOUT: !22 = !{!23}
    220. 

  220. // CHECK:STDOUT: !23 = !DILocalVariable(arg: 1, scope: !21, type: !15)
    221. 

  221. // CHECK:STDOUT: !24 = !DILocation(line: 11, column: 21, scope: !21)
    222. 

  222. // CHECK:STDOUT: !25 = !DILocation(line: 11, column: 3, scope: !21)
    223. 

  223. // CHECK:STDOUT: !26 = !DILocation(line: 10, column: 1, scope: !21)
    224. 

  224. // CHECK:STDOUT: !27 = distinct !DISubprogram(name: "PassIntPtrToConstVoidPtr", linkageName: "_CPassIntPtrToConstVoidPtr.Main", scope: null, file: !7, line: 14, type: !13, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !28)
    225. 

  225. // CHECK:STDOUT: !28 = !{!29}
    226. 

  226. // CHECK:STDOUT: !29 = !DILocalVariable(arg: 1, scope: !27, type: !15)
    227. 

  227. // CHECK:STDOUT: !30 = !DILocation(line: 15, column: 27, scope: !27)
    228. 

  228. // CHECK:STDOUT: !31 = !DILocation(line: 15, column: 3, scope: !27)
    229. 

  229. // CHECK:STDOUT: !32 = !DILocation(line: 14, column: 1, scope: !27)
    230. 

  230. // CHECK:STDOUT: !33 = distinct !DISubprogram(name: "PassConstIntPtrToConstVoidPtr", linkageName: "_CPassConstIntPtrToConstVoidPtr.Main", scope: null, file: !7, line: 18, type: !13, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !34)
    231. 

  231. // CHECK:STDOUT: !34 = !{!35}
    232. 

  232. // CHECK:STDOUT: !35 = !DILocalVariable(arg: 1, scope: !33, type: !15)
    233. 

  233. // CHECK:STDOUT: !36 = !DILocation(line: 19, column: 27, scope: !33)
    234. 

  234. // CHECK:STDOUT: !37 = !DILocation(line: 19, column: 3, scope: !33)
    235. 

  235. // CHECK:STDOUT: !38 = !DILocation(line: 18, column: 1, scope: !33)
    236. 

  236. // CHECK:STDOUT: !39 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.e5cf8fcbb4feaae2:ImplicitAs.0f95c9e18c91e00a.Core.5c62f2dbad753cd9", scope: null, file: !40, line: 93, type: !41, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !43)
    237. 

  237. // CHECK:STDOUT: !40 = !DIFile(filename: "{{.*}}/prelude/types/optional.carbon", directory: "")
    238. 

  238. // CHECK:STDOUT: !41 = !DISubroutineType(types: !42)
    239. 

  239. // CHECK:STDOUT: !42 = !{!15, !15}
    240. 

  240. // CHECK:STDOUT: !43 = !{!44}
    241. 

  241. // CHECK:STDOUT: !44 = !DILocalVariable(arg: 1, scope: !39, type: !15)
    242. 

  242. // CHECK:STDOUT: !45 = !DILocation(line: 94, column: 12, scope: !39)
    243. 

  243. // CHECK:STDOUT: !46 = !DILocation(line: 94, column: 5, scope: !39)
    244. 

  244. // CHECK:STDOUT: !47 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.e5cf8fcbb4feaae2:ImplicitAs.0f95c9e18c91e00a.Core.63e244d930b21b2a", scope: null, file: !40, line: 93, type: !41, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !48)
    245. 

  245. // CHECK:STDOUT: !48 = !{!49}
    246. 

  246. // CHECK:STDOUT: !49 = !DILocalVariable(arg: 1, scope: !47, type: !15)
    247. 

  247. // CHECK:STDOUT: !50 = !DILocation(line: 94, column: 12, scope: !47)
    248. 

  248. // CHECK:STDOUT: !51 = !DILocation(line: 94, column: 5, scope: !47)
    249. 

  249. // CHECK:STDOUT: !52 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.e5cf8fcbb4feaae2:ImplicitAs.0f95c9e18c91e00a.Core.3fcbaa3d70c86d44", scope: null, file: !40, line: 93, type: !41, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !53)
    250. 

  250. // CHECK:STDOUT: !53 = !{!54}
    251. 

  251. // CHECK:STDOUT: !54 = !DILocalVariable(arg: 1, scope: !52, type: !15)
    252. 

  252. // CHECK:STDOUT: !55 = !DILocation(line: 94, column: 12, scope: !52)
    253. 

  253. // CHECK:STDOUT: !56 = !DILocation(line: 94, column: 5, scope: !52)
    254. 

  254. // CHECK:STDOUT: !57 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.90961d7b1ce4f089:OptionalAs.0e326e799dad0c64.Core.d2075df181ac34c1", scope: null, file: !40, line: 68, type: !41, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !58)
    255. 

  255. // CHECK:STDOUT: !58 = !{!59}
    256. 

  256. // CHECK:STDOUT: !59 = !DILocalVariable(arg: 1, scope: !57, type: !15)
    257. 

  257. // CHECK:STDOUT: !60 = !DILocation(line: 69, column: 12, scope: !57)
    258. 

  258. // CHECK:STDOUT: !61 = !DILocation(line: 69, column: 5, scope: !57)
    259. 

  259. // CHECK:STDOUT: !62 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.3667eb502d1ddfa9:OptionalAs.c7a50af9bdd61b43.Core.599fcf6815ccd825", scope: null, file: !40, line: 75, type: !41, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !63)
    260. 

  260. // CHECK:STDOUT: !63 = !{!64}
    261. 

  261. // CHECK:STDOUT: !64 = !DILocalVariable(arg: 1, scope: !62, type: !15)
    262. 

  262. // CHECK:STDOUT: !65 = !DILocation(line: 76, column: 29, scope: !62)
    263. 

  263. // CHECK:STDOUT: !66 = !DILocation(line: 76, column: 12, scope: !62)
    264. 

  264. // CHECK:STDOUT: !67 = !DILocation(line: 76, column: 5, scope: !62)
    265. 

  265. // CHECK:STDOUT: !68 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.3667eb502d1ddfa9:OptionalAs.c7a50af9bdd61b43.Core.40332936f52138f0", scope: null, file: !40, line: 75, type: !41, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !69)
    266. 

  266. // CHECK:STDOUT: !69 = !{!70}
    267. 

  267. // CHECK:STDOUT: !70 = !DILocalVariable(arg: 1, scope: !68, type: !15)
    268. 

  268. // CHECK:STDOUT: !71 = !DILocation(line: 76, column: 29, scope: !68)
    269. 

  269. // CHECK:STDOUT: !72 = !DILocation(line: 76, column: 12, scope: !68)
    270. 

  270. // CHECK:STDOUT: !73 = !DILocation(line: 76, column: 5, scope: !68)
    271. 

  271. // CHECK:STDOUT: !74 = distinct !DISubprogram(name: "Some", linkageName: "_CSome.Optional.Core.d2075df181ac34c1", scope: null, file: !40, line: 29, type: !41, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !75)
    272. 

  272. // CHECK:STDOUT: !75 = !{!76}
    273. 

  273. // CHECK:STDOUT: !76 = !DILocalVariable(arg: 1, scope: !74, type: !15)
    274. 

  274. // CHECK:STDOUT: !77 = !DILocation(line: 30, column: 12, scope: !74)
    275. 

  275. // CHECK:STDOUT: !78 = !DILocation(line: 30, column: 5, scope: !74)
    276. 

  276. // CHECK:STDOUT: !79 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert:thunk.e8f8f92d3d08d149:ImplicitAs.ffd58aeb29886b72.Core.b88d1103f417c6d4", scope: null, file: !80, line: 40, type: !41, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !81)
    277. 

  277. // CHECK:STDOUT: !80 = !DIFile(filename: "{{.*}}/prelude/types/cpp/void.carbon", directory: "")
    278. 

  278. // CHECK:STDOUT: !81 = !{!82}
    279. 

  279. // CHECK:STDOUT: !82 = !DILocalVariable(arg: 1, scope: !79, type: !15)
    280. 

  280. // CHECK:STDOUT: !83 = !DILocation(line: 40, column: 3, scope: !79)
    281. 

  281. // CHECK:STDOUT: !84 = distinct !DISubprogram(name: "Some", linkageName: "_CSome.e8f8f92d3d08d149:OptionalStorage.Core.a3238f3d1f6ba299", scope: null, file: !40, line: 138, type: !41, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !85)
    282. 

  282. // CHECK:STDOUT: !85 = !{!86}
    283. 

  283. // CHECK:STDOUT: !86 = !DILocalVariable(arg: 1, scope: !84, type: !15)
    284. 

  284. // CHECK:STDOUT: !87 = !DILocation(line: 139, column: 14, scope: !84)
    285. 

  285. // CHECK:STDOUT: !88 = !DILocation(line: 140, column: 5, scope: !84)
    286. 

  286. // CHECK:STDOUT: !89 = !DILocation(line: 139, column: 18, scope: !84)
    287. 

  287. // CHECK:STDOUT: !90 = !DILocation(line: 141, column: 5, scope: !84)
    288. 

  288. // CHECK:STDOUT: ; ModuleID = 'receive.carbon'
    289. 

  289. // CHECK:STDOUT: source_filename = "receive.carbon"
    290. 

  290. // 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"
    291. 

  291. // CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
    292. 

  292. // CHECK:STDOUT:
    293. 

  293. // CHECK:STDOUT: ; Function Attrs: nounwind
    294. 

  294. // CHECK:STDOUT: define ptr @_CReceiveVoidPtr.Main() #0 !dbg !12 {
    295. 

  295. // CHECK:STDOUT: entry:
    296. 

  296. // CHECK:STDOUT:   %return_void_ptr.call = call ptr @_Z15return_void_ptrv(), !dbg !16
    297. 

  297. // CHECK:STDOUT:   ret ptr %return_void_ptr.call, !dbg !17
    298. 

  298. // CHECK:STDOUT: }
    299. 

  299. // CHECK:STDOUT:
    300. 

  300. // CHECK:STDOUT: declare ptr @_Z15return_void_ptrv()
    301. 

  301. // CHECK:STDOUT:
    302. 

  302. // CHECK:STDOUT: ; Function Attrs: nounwind
    303. 

  303. // CHECK:STDOUT: define ptr @_CConvertFromVoidPtr.Main(ptr %p) #0 !dbg !18 {
    304. 

  304. // CHECK:STDOUT: entry:
    305. 

  305. // CHECK:STDOUT:   ret ptr %p, !dbg !23
    306. 

  306. // CHECK:STDOUT: }
    307. 

  307. // CHECK:STDOUT:
    308. 

  308. // CHECK:STDOUT: ; Function Attrs: nounwind
    309. 

  309. // CHECK:STDOUT: define ptr @_CConvertFromConstVoidPtr.Main(ptr %p) #0 !dbg !24 {
    310. 

  310. // CHECK:STDOUT: entry:
    311. 

  311. // CHECK:STDOUT:   ret ptr %p, !dbg !27
    312. 

  312. // CHECK:STDOUT: }
    313. 

  313. // CHECK:STDOUT:
    314. 

  314. // CHECK:STDOUT: attributes #0 = { nounwind }
    315. 

  315. // CHECK:STDOUT:
    316. 

  316. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4, !5}
    317. 

  317. // CHECK:STDOUT: !llvm.dbg.cu = !{!6}
    318. 

  318. // CHECK:STDOUT: !llvm.errno.tbaa = !{!8}
    319. 

  319. // CHECK:STDOUT:
    320. 

  320. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    321. 

  321. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    322. 

  322. // CHECK:STDOUT: !2 = !{i32 1, !"wchar_size", i32 4}
    323. 

  323. // CHECK:STDOUT: !3 = !{i32 8, !"PIC Level", i32 0}
    324. 

  324. // CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
    325. 

  325. // CHECK:STDOUT: !5 = !{i32 7, !"uwtable", i32 2}
    326. 

  326. // CHECK:STDOUT: !6 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !7, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    327. 

  327. // CHECK:STDOUT: !7 = !DIFile(filename: "receive.carbon", directory: "")
    328. 

  328. // CHECK:STDOUT: !8 = !{!9, !9, i64 0}
    329. 

  329. // CHECK:STDOUT: !9 = !{!"int", !10, i64 0}
    330. 

  330. // CHECK:STDOUT: !10 = !{!"omnipotent char", !11, i64 0}
    331. 

  331. // CHECK:STDOUT: !11 = !{!"Simple C++ TBAA"}
    332. 

  332. // CHECK:STDOUT: !12 = distinct !DISubprogram(name: "ReceiveVoidPtr", linkageName: "_CReceiveVoidPtr.Main", scope: null, file: !7, line: 6, type: !13, spFlags: DISPFlagDefinition, unit: !6)
    333. 

  333. // CHECK:STDOUT: !13 = !DISubroutineType(types: !14)
    334. 

  334. // CHECK:STDOUT: !14 = !{!15}
    335. 

  335. // CHECK:STDOUT: !15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
    336. 

  336. // CHECK:STDOUT: !16 = !DILocation(line: 7, column: 10, scope: !12)
    337. 

  337. // CHECK:STDOUT: !17 = !DILocation(line: 7, column: 3, scope: !12)
    338. 

  338. // CHECK:STDOUT: !18 = distinct !DISubprogram(name: "ConvertFromVoidPtr", linkageName: "_CConvertFromVoidPtr.Main", scope: null, file: !7, line: 10, type: !19, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !21)
    339. 

  339. // CHECK:STDOUT: !19 = !DISubroutineType(types: !20)
    340. 

  340. // CHECK:STDOUT: !20 = !{!15, !15}
    341. 

  341. // CHECK:STDOUT: !21 = !{!22}
    342. 

  342. // CHECK:STDOUT: !22 = !DILocalVariable(arg: 1, scope: !18, type: !15)
    343. 

  343. // CHECK:STDOUT: !23 = !DILocation(line: 11, column: 3, scope: !18)
    344. 

  344. // CHECK:STDOUT: !24 = distinct !DISubprogram(name: "ConvertFromConstVoidPtr", linkageName: "_CConvertFromConstVoidPtr.Main", scope: null, file: !7, line: 14, type: !19, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !25)
    345. 

  345. // CHECK:STDOUT: !25 = !{!26}
    346. 

  346. // CHECK:STDOUT: !26 = !DILocalVariable(arg: 1, scope: !24, type: !15)
    347. 

  347. // CHECK:STDOUT: !27 = !DILocation(line: 15, column: 3, scope: !24)
    348.