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carbon-lang
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toolchain
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lower
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testdata
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impl
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import_thunk.carbon

import_thunk.carbon 18 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/int.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/impl/import_thunk.carbon
    10. 

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

  11. // TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/impl/import_thunk.carbon
    12. 

  12. 

  13. // --- thunk.carbon
    14. 

  14. 

  15. library "[[@TEST_NAME]]";
    16. 

  16. 

  17. class A { var a: i32; }
    18. 

  18. class B { var b: i32; }
    19. 

  19. class C { var c: i32; }
    20. 

  20. 

  21. impl A as Core.ImplicitAs(B) {
    22. 

  22.   fn Convert[self: A]() -> B { return {.b = self.a}; }
    23. 

  23. }
    24. 

  24. impl B as Core.ImplicitAs(C) {
    25. 

  25.   fn Convert[self: B]() -> C { return {.c = self.b}; }
    26. 

  26. }
    27. 

  27. 

  28. interface I {
    29. 

  29.   fn F(a: A) -> C;
    30. 

  30. }
    31. 

  31. 

  32. impl () as I {
    33. 

  33.   fn F(b: B) -> B { return {.b = b.b}; }
    34. 

  34. }
    35. 

  35. 

  36. // --- call_thunk.carbon
    37. 

  37. 

  38. library "[[@TEST_NAME]]";
    39. 

  39. 

  40. import library "thunk";
    41. 

  41. 

  42. fn Test(a: A) -> C {
    43. 

  43.   return ().(I.F)(a);
    44. 

  44. }
    45. 

  45. 

  46. // --- thunk_for_imported_interface.carbon
    47. 

  47. 

  48. library "[[@TEST_NAME]]";
    49. 

  49. 

  50. import library "thunk";
    51. 

  51. 

  52. class X {}
    53. 

  53. 

  54. impl X as I {
    55. 

  55.   fn F(b: B) -> B { return {.b = b.b}; }
    56. 

  56. }
    57. 

  57. 

  58. // --- call_thunk_for_imported_interface.carbon
    59. 

  59. 

  60. library "[[@TEST_NAME]]";
    61. 

  61. 

  62. import library "thunk";
    63. 

  63. import library "thunk_for_imported_interface";
    64. 

  64. 

  65. fn Test(a: A) -> C {
    66. 

  66.   return X.(I.F)(a);
    67. 

  67. }
    68. 

  68. 

  69. // CHECK:STDOUT: ; ModuleID = 'thunk.carbon'
    70. 

  70. // CHECK:STDOUT: source_filename = "thunk.carbon"
    71. 

  71. // CHECK:STDOUT:
    72. 

  72. // CHECK:STDOUT: ; Function Attrs: nounwind
    73. 

  73. // CHECK:STDOUT: define void @"_CConvert.A.Main:ImplicitAs.707dbe5ae2414d29.Core"(ptr sret({ i32 }) %return, ptr %self) #0 !dbg !4 {
    74. 

  74. // CHECK:STDOUT: entry:
    75. 

  75. // CHECK:STDOUT:   %.loc9_49.1.a = getelementptr inbounds nuw { i32 }, ptr %self, i32 0, i32 0, !dbg !10
    76. 

  76. // CHECK:STDOUT:   %.loc9_49.2 = load i32, ptr %.loc9_49.1.a, align 4, !dbg !10
    77. 

  77. // CHECK:STDOUT:   %.loc9_51.2.b = getelementptr inbounds nuw { i32 }, ptr %return, i32 0, i32 0, !dbg !11
    78. 

  78. // CHECK:STDOUT:   store i32 %.loc9_49.2, ptr %.loc9_51.2.b, align 4, !dbg !11
    79. 

  79. // CHECK:STDOUT:   ret void, !dbg !12
    80. 

  80. // CHECK:STDOUT: }
    81. 

  81. // CHECK:STDOUT:
    82. 

  82. // CHECK:STDOUT: ; Function Attrs: nounwind
    83. 

  83. // CHECK:STDOUT: define void @"_CConvert.B.Main:ImplicitAs.0c4ab795cec6cb27.Core"(ptr sret({ i32 }) %return, ptr %self) #0 !dbg !13 {
    84. 

  84. // CHECK:STDOUT: entry:
    85. 

  85. // CHECK:STDOUT:   %.loc12_49.1.b = getelementptr inbounds nuw { i32 }, ptr %self, i32 0, i32 0, !dbg !16
    86. 

  86. // CHECK:STDOUT:   %.loc12_49.2 = load i32, ptr %.loc12_49.1.b, align 4, !dbg !16
    87. 

  87. // CHECK:STDOUT:   %.loc12_51.2.c = getelementptr inbounds nuw { i32 }, ptr %return, i32 0, i32 0, !dbg !17
    88. 

  88. // CHECK:STDOUT:   store i32 %.loc12_49.2, ptr %.loc12_51.2.c, align 4, !dbg !17
    89. 

  89. // CHECK:STDOUT:   ret void, !dbg !18
    90. 

  90. // CHECK:STDOUT: }
    91. 

  91. // CHECK:STDOUT:
    92. 

  92. // CHECK:STDOUT: ; Function Attrs: nounwind
    93. 

  93. // CHECK:STDOUT: define void @"_CF.61ea2aba74ab3bf1:I.Main"(ptr sret({ i32 }) %return, ptr %b) #0 !dbg !19 {
    94. 

  94. // CHECK:STDOUT: entry:
    95. 

  95. // CHECK:STDOUT:   %.loc20_35.1.b = getelementptr inbounds nuw { i32 }, ptr %b, i32 0, i32 0, !dbg !22
    96. 

  96. // CHECK:STDOUT:   %.loc20_35.2 = load i32, ptr %.loc20_35.1.b, align 4, !dbg !22
    97. 

  97. // CHECK:STDOUT:   %.loc20_37.2.b = getelementptr inbounds nuw { i32 }, ptr %return, i32 0, i32 0, !dbg !23
    98. 

  98. // CHECK:STDOUT:   store i32 %.loc20_35.2, ptr %.loc20_37.2.b, align 4, !dbg !23
    99. 

  99. // CHECK:STDOUT:   ret void, !dbg !24
    100. 

  100. // CHECK:STDOUT: }
    101. 

  101. // CHECK:STDOUT:
    102. 

  102. // CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind
    103. 

  103. // CHECK:STDOUT: define void @"_CF:thunk.61ea2aba74ab3bf1:I.Main"(ptr sret({ i32 }) %return, ptr %a) #1 !dbg !25 {
    104. 

  104. // CHECK:STDOUT: entry:
    105. 

  105. // CHECK:STDOUT:   %.loc20_19.1.temp = alloca { i32 }, align 8, !dbg !28
    106. 

  106. // CHECK:STDOUT:   %.loc16_9.1.temp = alloca { i32 }, align 8, !dbg !29
    107. 

  107. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc20_19.1.temp), !dbg !28
    108. 

  108. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc16_9.1.temp), !dbg !29
    109. 

  109. // CHECK:STDOUT:   call void @"_CConvert.A.Main:ImplicitAs.707dbe5ae2414d29.Core"(ptr %.loc16_9.1.temp, ptr %a), !dbg !29
    110. 

  110. // CHECK:STDOUT:   call void @"_CF.61ea2aba74ab3bf1:I.Main"(ptr %.loc20_19.1.temp, ptr %.loc16_9.1.temp), !dbg !28
    111. 

  111. // CHECK:STDOUT:   call void @"_CConvert.B.Main:ImplicitAs.0c4ab795cec6cb27.Core"(ptr %return, ptr %.loc20_19.1.temp), !dbg !28
    112. 

  112. // CHECK:STDOUT:   ret void, !dbg !28
    113. 

  113. // CHECK:STDOUT: }
    114. 

  114. // CHECK:STDOUT:
    115. 

  115. // CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
    116. 

  116. // CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #2
    117. 

  117. // CHECK:STDOUT:
    118. 

  118. // CHECK:STDOUT: ; uselistorder directives
    119. 

  119. // CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 1, 0 }
    120. 

  120. // CHECK:STDOUT:
    121. 

  121. // CHECK:STDOUT: attributes #0 = { nounwind }
    122. 

  122. // CHECK:STDOUT: attributes #1 = { alwaysinline nounwind }
    123. 

  123. // CHECK:STDOUT: attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
    124. 

  124. // CHECK:STDOUT:
    125. 

  125. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
    126. 

  126. // CHECK:STDOUT: !llvm.dbg.cu = !{!2}
    127. 

  127. // CHECK:STDOUT:
    128. 

  128. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    129. 

  129. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    130. 

  130. // CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    131. 

  131. // CHECK:STDOUT: !3 = !DIFile(filename: "thunk.carbon", directory: "")
    132. 

  132. // CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.A.Main:ImplicitAs.707dbe5ae2414d29.Core", scope: null, file: !3, line: 9, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !8)
    133. 

  133. // CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
    134. 

  134. // CHECK:STDOUT: !6 = !{!7, !7}
    135. 

  135. // CHECK:STDOUT: !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
    136. 

  136. // CHECK:STDOUT: !8 = !{!9}
    137. 

  137. // CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
    138. 

  138. // CHECK:STDOUT: !10 = !DILocation(line: 9, column: 45, scope: !4)
    139. 

  139. // CHECK:STDOUT: !11 = !DILocation(line: 9, column: 39, scope: !4)
    140. 

  140. // CHECK:STDOUT: !12 = !DILocation(line: 9, column: 32, scope: !4)
    141. 

  141. // CHECK:STDOUT: !13 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.B.Main:ImplicitAs.0c4ab795cec6cb27.Core", scope: null, file: !3, line: 12, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !14)
    142. 

  142. // CHECK:STDOUT: !14 = !{!15}
    143. 

  143. // CHECK:STDOUT: !15 = !DILocalVariable(arg: 1, scope: !13, type: !7)
    144. 

  144. // CHECK:STDOUT: !16 = !DILocation(line: 12, column: 45, scope: !13)
    145. 

  145. // CHECK:STDOUT: !17 = !DILocation(line: 12, column: 39, scope: !13)
    146. 

  146. // CHECK:STDOUT: !18 = !DILocation(line: 12, column: 32, scope: !13)
    147. 

  147. // CHECK:STDOUT: !19 = distinct !DISubprogram(name: "F", linkageName: "_CF.61ea2aba74ab3bf1:I.Main", scope: null, file: !3, line: 20, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !20)
    148. 

  148. // CHECK:STDOUT: !20 = !{!21}
    149. 

  149. // CHECK:STDOUT: !21 = !DILocalVariable(arg: 1, scope: !19, type: !7)
    150. 

  150. // CHECK:STDOUT: !22 = !DILocation(line: 20, column: 34, scope: !19)
    151. 

  151. // CHECK:STDOUT: !23 = !DILocation(line: 20, column: 28, scope: !19)
    152. 

  152. // CHECK:STDOUT: !24 = !DILocation(line: 20, column: 21, scope: !19)
    153. 

  153. // CHECK:STDOUT: !25 = distinct !DISubprogram(name: "F", linkageName: "_CF:thunk.61ea2aba74ab3bf1:I.Main", scope: null, file: !3, line: 20, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !26)
    154. 

  154. // CHECK:STDOUT: !26 = !{!27}
    155. 

  155. // CHECK:STDOUT: !27 = !DILocalVariable(arg: 1, scope: !25, type: !7)
    156. 

  156. // CHECK:STDOUT: !28 = !DILocation(line: 20, column: 3, scope: !25)
    157. 

  157. // CHECK:STDOUT: !29 = !DILocation(line: 16, column: 8, scope: !25)
    158. 

  158. // CHECK:STDOUT: ; ModuleID = 'call_thunk.carbon'
    159. 

  159. // CHECK:STDOUT: source_filename = "call_thunk.carbon"
    160. 

  160. // CHECK:STDOUT:
    161. 

  161. // CHECK:STDOUT: ; Function Attrs: nounwind
    162. 

  162. // CHECK:STDOUT: define void @_CTest.Main(ptr sret({ i32 }) %return, ptr %a) #0 !dbg !4 {
    163. 

  163. // CHECK:STDOUT: entry:
    164. 

  164. // CHECK:STDOUT:   %.loc7_20.1.temp = alloca { i32 }, align 8, !dbg !10
    165. 

  165. // CHECK:STDOUT:   %.loc7_20.2.temp = alloca { i32 }, align 8, !dbg !10
    166. 

  166. // CHECK:STDOUT:   %.loc7_19.1.temp = alloca { i32 }, align 8, !dbg !11
    167. 

  167. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc7_20.1.temp), !dbg !10
    168. 

  168. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc7_20.2.temp), !dbg !10
    169. 

  169. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc7_19.1.temp), !dbg !11
    170. 

  170. // CHECK:STDOUT:   call void @"_CConvert.A.Main:ImplicitAs.707dbe5ae2414d29.Core"(ptr %.loc7_19.1.temp, ptr %a), !dbg !11
    171. 

  171. // CHECK:STDOUT:   call void @"_CF.61ea2aba74ab3bf1:I.Main"(ptr %.loc7_20.2.temp, ptr %.loc7_19.1.temp), !dbg !10
    172. 

  172. // CHECK:STDOUT:   call void @"_CConvert.B.Main:ImplicitAs.0c4ab795cec6cb27.Core"(ptr %return, ptr %.loc7_20.2.temp), !dbg !12
    173. 

  173. // CHECK:STDOUT:   ret void, !dbg !12
    174. 

  174. // CHECK:STDOUT: }
    175. 

  175. // CHECK:STDOUT:
    176. 

  176. // CHECK:STDOUT: declare void @"_CF:thunk.61ea2aba74ab3bf1:I.Main"(ptr sret({ i32 }), ptr)
    177. 

  177. // CHECK:STDOUT:
    178. 

  178. // CHECK:STDOUT: declare void @"_CF.61ea2aba74ab3bf1:I.Main"(ptr sret({ i32 }), ptr)
    179. 

  179. // CHECK:STDOUT:
    180. 

  180. // CHECK:STDOUT: declare void @"_CConvert.A.Main:ImplicitAs.707dbe5ae2414d29.Core"(ptr sret({ i32 }), ptr)
    181. 

  181. // CHECK:STDOUT:
    182. 

  182. // CHECK:STDOUT: declare void @"_CConvert.B.Main:ImplicitAs.0c4ab795cec6cb27.Core"(ptr sret({ i32 }), ptr)
    183. 

  183. // CHECK:STDOUT:
    184. 

  184. // CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
    185. 

  185. // CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #1
    186. 

  186. // CHECK:STDOUT:
    187. 

  187. // CHECK:STDOUT: ; uselistorder directives
    188. 

  188. // CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 2, 1, 0 }
    189. 

  189. // CHECK:STDOUT:
    190. 

  190. // CHECK:STDOUT: attributes #0 = { nounwind }
    191. 

  191. // CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
    192. 

  192. // CHECK:STDOUT:
    193. 

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

  194. // CHECK:STDOUT: !llvm.dbg.cu = !{!2}
    195. 

  195. // CHECK:STDOUT:
    196. 

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

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

  198. // CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    199. 

  199. // CHECK:STDOUT: !3 = !DIFile(filename: "call_thunk.carbon", directory: "")
    200. 

  200. // CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Test", linkageName: "_CTest.Main", scope: null, file: !3, line: 6, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !8)
    201. 

  201. // CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
    202. 

  202. // CHECK:STDOUT: !6 = !{!7, !7}
    203. 

  203. // CHECK:STDOUT: !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
    204. 

  204. // CHECK:STDOUT: !8 = !{!9}
    205. 

  205. // CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
    206. 

  206. // CHECK:STDOUT: !10 = !DILocation(line: 7, column: 10, scope: !4)
    207. 

  207. // CHECK:STDOUT: !11 = !DILocation(line: 7, column: 19, scope: !4)
    208. 

  208. // CHECK:STDOUT: !12 = !DILocation(line: 7, column: 3, scope: !4)
    209. 

  209. // CHECK:STDOUT: ; ModuleID = 'thunk_for_imported_interface.carbon'
    210. 

  210. // CHECK:STDOUT: source_filename = "thunk_for_imported_interface.carbon"
    211. 

  211. // CHECK:STDOUT:
    212. 

  212. // CHECK:STDOUT: ; Function Attrs: nounwind
    213. 

  213. // CHECK:STDOUT: define void @"_CF.X.Main:I.Main"(ptr sret({ i32 }) %return, ptr %b) #0 !dbg !4 {
    214. 

  214. // CHECK:STDOUT: entry:
    215. 

  215. // CHECK:STDOUT:   %.loc9_35.1.b = getelementptr inbounds nuw { i32 }, ptr %b, i32 0, i32 0, !dbg !10
    216. 

  216. // CHECK:STDOUT:   %.loc9_35.2 = load i32, ptr %.loc9_35.1.b, align 4, !dbg !10
    217. 

  217. // CHECK:STDOUT:   %.loc9_37.2.b = getelementptr inbounds nuw { i32 }, ptr %return, i32 0, i32 0, !dbg !11
    218. 

  218. // CHECK:STDOUT:   store i32 %.loc9_35.2, ptr %.loc9_37.2.b, align 4, !dbg !11
    219. 

  219. // CHECK:STDOUT:   ret void, !dbg !12
    220. 

  220. // CHECK:STDOUT: }
    221. 

  221. // CHECK:STDOUT:
    222. 

  222. // CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind
    223. 

  223. // CHECK:STDOUT: define void @"_CF:thunk.X.Main:I.Main"(ptr sret({ i32 }) %return, ptr %a) #1 !dbg !13 {
    224. 

  224. // CHECK:STDOUT: entry:
    225. 

  225. // CHECK:STDOUT:   %.loc9_19.1.temp = alloca { i32 }, align 8, !dbg !16
    226. 

  226. // CHECK:STDOUT:   %.2.temp = alloca { i32 }, align 8
    227. 

  227. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc9_19.1.temp), !dbg !16
    228. 

  228. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.2.temp)
    229. 

  229. // CHECK:STDOUT:   call void @"_CConvert.A.Main:ImplicitAs.707dbe5ae2414d29.Core"(ptr %.2.temp, ptr %a), !dbg !17
    230. 

  230. // CHECK:STDOUT:   call void @"_CF.X.Main:I.Main"(ptr %.loc9_19.1.temp, ptr %.2.temp), !dbg !16
    231. 

  231. // CHECK:STDOUT:   call void @"_CConvert.B.Main:ImplicitAs.0c4ab795cec6cb27.Core"(ptr %return, ptr %.loc9_19.1.temp), !dbg !16
    232. 

  232. // CHECK:STDOUT:   ret void, !dbg !16
    233. 

  233. // CHECK:STDOUT: }
    234. 

  234. // CHECK:STDOUT:
    235. 

  235. // CHECK:STDOUT: declare void @"_CConvert.A.Main:ImplicitAs.707dbe5ae2414d29.Core"(ptr sret({ i32 }), ptr)
    236. 

  236. // CHECK:STDOUT:
    237. 

  237. // CHECK:STDOUT: declare void @"_CConvert.B.Main:ImplicitAs.0c4ab795cec6cb27.Core"(ptr sret({ i32 }), ptr)
    238. 

  238. // CHECK:STDOUT:
    239. 

  239. // CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
    240. 

  240. // CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #2
    241. 

  241. // CHECK:STDOUT:
    242. 

  242. // CHECK:STDOUT: ; uselistorder directives
    243. 

  243. // CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 1, 0 }
    244. 

  244. // CHECK:STDOUT:
    245. 

  245. // CHECK:STDOUT: attributes #0 = { nounwind }
    246. 

  246. // CHECK:STDOUT: attributes #1 = { alwaysinline nounwind }
    247. 

  247. // CHECK:STDOUT: attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
    248. 

  248. // CHECK:STDOUT:
    249. 

  249. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
    250. 

  250. // CHECK:STDOUT: !llvm.dbg.cu = !{!2}
    251. 

  251. // CHECK:STDOUT:
    252. 

  252. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    253. 

  253. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    254. 

  254. // CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    255. 

  255. // CHECK:STDOUT: !3 = !DIFile(filename: "thunk_for_imported_interface.carbon", directory: "")
    256. 

  256. // CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.X.Main:I.Main", scope: null, file: !3, line: 9, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !8)
    257. 

  257. // CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
    258. 

  258. // CHECK:STDOUT: !6 = !{!7, !7}
    259. 

  259. // CHECK:STDOUT: !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
    260. 

  260. // CHECK:STDOUT: !8 = !{!9}
    261. 

  261. // CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
    262. 

  262. // CHECK:STDOUT: !10 = !DILocation(line: 9, column: 34, scope: !4)
    263. 

  263. // CHECK:STDOUT: !11 = !DILocation(line: 9, column: 28, scope: !4)
    264. 

  264. // CHECK:STDOUT: !12 = !DILocation(line: 9, column: 21, scope: !4)
    265. 

  265. // CHECK:STDOUT: !13 = distinct !DISubprogram(name: "F", linkageName: "_CF:thunk.X.Main:I.Main", scope: null, file: !3, line: 9, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !14)
    266. 

  266. // CHECK:STDOUT: !14 = !{!15}
    267. 

  267. // CHECK:STDOUT: !15 = !DILocalVariable(arg: 1, scope: !13, type: !7)
    268. 

  268. // CHECK:STDOUT: !16 = !DILocation(line: 9, column: 3, scope: !13)
    269. 

  269. // CHECK:STDOUT: !17 = !DILocation(line: 4294967295, scope: !13)
    270. 

  270. // CHECK:STDOUT: ; ModuleID = 'call_thunk_for_imported_interface.carbon'
    271. 

  271. // CHECK:STDOUT: source_filename = "call_thunk_for_imported_interface.carbon"
    272. 

  272. // CHECK:STDOUT:
    273. 

  273. // CHECK:STDOUT: ; Function Attrs: nounwind
    274. 

  274. // CHECK:STDOUT: define void @_CTest.Main(ptr sret({ i32 }) %return, ptr %a) #0 !dbg !4 {
    275. 

  275. // CHECK:STDOUT: entry:
    276. 

  276. // CHECK:STDOUT:   %.loc8_19.1.temp = alloca { i32 }, align 8, !dbg !10
    277. 

  277. // CHECK:STDOUT:   %.loc8_19.2.temp = alloca { i32 }, align 8, !dbg !10
    278. 

  278. // CHECK:STDOUT:   %.loc8_18.1.temp = alloca { i32 }, align 8, !dbg !11
    279. 

  279. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc8_19.1.temp), !dbg !10
    280. 

  280. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc8_19.2.temp), !dbg !10
    281. 

  281. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc8_18.1.temp), !dbg !11
    282. 

  282. // CHECK:STDOUT:   call void @"_CConvert.A.Main:ImplicitAs.707dbe5ae2414d29.Core"(ptr %.loc8_18.1.temp, ptr %a), !dbg !11
    283. 

  283. // CHECK:STDOUT:   call void @"_CF.X.Main:I.Main"(ptr %.loc8_19.2.temp, ptr %.loc8_18.1.temp), !dbg !10
    284. 

  284. // CHECK:STDOUT:   call void @"_CConvert.B.Main:ImplicitAs.0c4ab795cec6cb27.Core"(ptr %return, ptr %.loc8_19.2.temp), !dbg !12
    285. 

  285. // CHECK:STDOUT:   ret void, !dbg !12
    286. 

  286. // CHECK:STDOUT: }
    287. 

  287. // CHECK:STDOUT:
    288. 

  288. // CHECK:STDOUT: declare void @"_CF:thunk.X.Main:I.Main"(ptr sret({ i32 }), ptr)
    289. 

  289. // CHECK:STDOUT:
    290. 

  290. // CHECK:STDOUT: declare void @"_CF.X.Main:I.Main"(ptr sret({ i32 }), ptr)
    291. 

  291. // CHECK:STDOUT:
    292. 

  292. // CHECK:STDOUT: declare void @"_CConvert.A.Main:ImplicitAs.707dbe5ae2414d29.Core"(ptr sret({ i32 }), ptr)
    293. 

  293. // CHECK:STDOUT:
    294. 

  294. // CHECK:STDOUT: declare void @"_CConvert.B.Main:ImplicitAs.0c4ab795cec6cb27.Core"(ptr sret({ i32 }), ptr)
    295. 

  295. // CHECK:STDOUT:
    296. 

  296. // CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
    297. 

  297. // CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #1
    298. 

  298. // CHECK:STDOUT:
    299. 

  299. // CHECK:STDOUT: ; uselistorder directives
    300. 

  300. // CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 2, 1, 0 }
    301. 

  301. // CHECK:STDOUT:
    302. 

  302. // CHECK:STDOUT: attributes #0 = { nounwind }
    303. 

  303. // CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
    304. 

  304. // CHECK:STDOUT:
    305. 

  305. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
    306. 

  306. // CHECK:STDOUT: !llvm.dbg.cu = !{!2}
    307. 

  307. // CHECK:STDOUT:
    308. 

  308. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    309. 

  309. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    310. 

  310. // CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    311. 

  311. // CHECK:STDOUT: !3 = !DIFile(filename: "call_thunk_for_imported_interface.carbon", directory: "")
    312. 

  312. // CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Test", linkageName: "_CTest.Main", scope: null, file: !3, line: 7, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !8)
    313. 

  313. // CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
    314. 

  314. // CHECK:STDOUT: !6 = !{!7, !7}
    315. 

  315. // CHECK:STDOUT: !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
    316. 

  316. // CHECK:STDOUT: !8 = !{!9}
    317. 

  317. // CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
    318. 

  318. // CHECK:STDOUT: !10 = !DILocation(line: 8, column: 10, scope: !4)
    319. 

  319. // CHECK:STDOUT: !11 = !DILocation(line: 8, column: 18, scope: !4)
    320. 

  320. // CHECK:STDOUT: !12 = !DILocation(line: 8, column: 3, scope: !4)
    321.