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carbon-lang
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carbon-lang
/
toolchain
/
lower
/
testdata
/
function
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generic
/
call_recursive_diamond.carbon

call_recursive_diamond.carbon 24 KB
Vēsture Neapstrādāts

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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/function/generic/call_recursive_diamond.carbon
    10. 

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

  11. // TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/function/generic/call_recursive_diamond.carbon
    12. 

  12. 

  13. import Core library "io";
    14. 

  14. fn A[T:! Core.Copy](x: T, count: i32) -> T;
    15. 

  15. fn B[T:! Core.Copy](x: T, count: i32) -> T;
    16. 

  16. fn C[T:! Core.Copy](x: T, count: i32) -> T;
    17. 

  17. fn D[T:! Core.Copy](x: T, count: i32) -> T;
    18. 

  18. 

  19. // Builds on `call_recursive_mutual.carbon`. The two specifics for each of:
    20. 

  20. // A, B, C, D with a pointer type could be deduplicated.
    21. 

  21. fn A[T:! Core.Copy](x: T, count: i32) -> T {
    22. 

  22.   if (count > 4) {
    23. 

  23.     return x;
    24. 

  24.   }
    25. 

  25.   if (count % 2 == 0) {
    26. 

  26.     return B(x, count);
    27. 

  27.   } else {
    28. 

  28.     return C(x, count);
    29. 

  29.   }
    30. 

  30. }
    31. 

  31. 

  32. // B and C are not equivalent in the diamond: different generics and different function bodies.
    33. 

  33. fn B[T:! Core.Copy](x: T, count: i32) -> T {
    34. 

  34.   Core.Print(1);
    35. 

  35.   return D(x, count);
    36. 

  36. }
    37. 

  37. 

  38. fn C[T:! Core.Copy](x: T, count: i32) -> T {
    39. 

  39.   Core.Print(2);
    40. 

  40.   return D(x, count);
    41. 

  41. }
    42. 

  42. 

  43. fn D[T:! Core.Copy](x: T, count: i32) -> T {
    44. 

  44.   return A(x, count + 1);
    45. 

  45. }
    46. 

  46. 

  47. fn M() {
    48. 

  48.   var n: i32 = 0;
    49. 

  49.   var m: f64 = 1.0;
    50. 

  50.   var ptr_i32 : i32* = &n;
    51. 

  51.   var ptr_f64 : f64* = &m;
    52. 

  52. 

  53.   A(n, 0);
    54. 

  54.   A(m, 0);
    55. 

  55.   A(ptr_i32, 0);
    56. 

  56.   A(ptr_f64, 0);
    57. 

  57. }
    58. 

  58. 

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

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

  61. // CHECK:STDOUT:
    62. 

  62. // CHECK:STDOUT: @printf.int.format = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
    63. 

  63. // CHECK:STDOUT:
    64. 

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

  65. // CHECK:STDOUT: define void @_CM.Main() #0 !dbg !4 {
    66. 

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

  67. // CHECK:STDOUT:   %n.var = alloca i32, align 4, !dbg !7
    68. 

  68. // CHECK:STDOUT:   %m.var = alloca double, align 8, !dbg !8
    69. 

  69. // CHECK:STDOUT:   %ptr_i32.var = alloca ptr, align 8, !dbg !9
    70. 

  70. // CHECK:STDOUT:   %ptr_f64.var = alloca ptr, align 8, !dbg !10
    71. 

  71. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %n.var), !dbg !7
    72. 

  72. // CHECK:STDOUT:   store i32 0, ptr %n.var, align 4, !dbg !7
    73. 

  73. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %m.var), !dbg !8
    74. 

  74. // CHECK:STDOUT:   store double 1.000000e+00, ptr %m.var, align 8, !dbg !8
    75. 

  75. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %ptr_i32.var), !dbg !9
    76. 

  76. // CHECK:STDOUT:   store ptr %n.var, ptr %ptr_i32.var, align 8, !dbg !9
    77. 

  77. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %ptr_f64.var), !dbg !10
    78. 

  78. // CHECK:STDOUT:   store ptr %m.var, ptr %ptr_f64.var, align 8, !dbg !10
    79. 

  79. // CHECK:STDOUT:   %.loc53_5 = load i32, ptr %n.var, align 4, !dbg !11
    80. 

  80. // CHECK:STDOUT:   %A.call.loc53 = call i32 @_CA.Main.64ccbb8e5d9a0b8e(i32 %.loc53_5, i32 0), !dbg !12
    81. 

  81. // CHECK:STDOUT:   %.loc54_5 = load double, ptr %m.var, align 8, !dbg !13
    82. 

  82. // CHECK:STDOUT:   %A.call.loc54 = call double @_CA.Main.de5b400758c39a65(double %.loc54_5, i32 0), !dbg !14
    83. 

  83. // CHECK:STDOUT:   %.loc55_5 = load ptr, ptr %ptr_i32.var, align 8, !dbg !15
    84. 

  84. // CHECK:STDOUT:   %A.call.loc55 = call ptr @_CA.Main.779b9c0f3b54a7f8(ptr %.loc55_5, i32 0), !dbg !16
    85. 

  85. // CHECK:STDOUT:   %.loc56_5 = load ptr, ptr %ptr_f64.var, align 8, !dbg !17
    86. 

  86. // CHECK:STDOUT:   %A.call.loc56 = call ptr @_CA.Main.779b9c0f3b54a7f8(ptr %.loc56_5, i32 0), !dbg !18
    87. 

  87. // CHECK:STDOUT:   call void @"_COp.98006a366c2ffd6c:core.Destroy.Core"(ptr %m.var), !dbg !8
    88. 

  88. // CHECK:STDOUT:   call void @"_COp.7e389eab4a7e5487:core.Destroy.Core"(ptr %n.var), !dbg !7
    89. 

  89. // CHECK:STDOUT:   ret void, !dbg !19
    90. 

  90. // CHECK:STDOUT: }
    91. 

  91. // CHECK:STDOUT:
    92. 

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

  93. // CHECK:STDOUT: define weak_odr void @"_COp.98006a366c2ffd6c:core.Destroy.Core"(ptr %self) #0 !dbg !20 {
    94. 

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

  95. // CHECK:STDOUT:   ret void, !dbg !26
    96. 

  96. // CHECK:STDOUT: }
    97. 

  97. // CHECK:STDOUT:
    98. 

  98. // CHECK:STDOUT: ; Function Attrs: nounwind
    99. 

  99. // CHECK:STDOUT: define weak_odr void @"_COp.7e389eab4a7e5487:core.Destroy.Core"(ptr %self) #0 !dbg !27 {
    100. 

  100. // CHECK:STDOUT: entry:
    101. 

  101. // CHECK:STDOUT:   ret void, !dbg !33
    102. 

  102. // CHECK:STDOUT: }
    103. 

  103. // CHECK:STDOUT:
    104. 

  104. // CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
    105. 

  105. // CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #1
    106. 

  106. // CHECK:STDOUT:
    107. 

  107. // CHECK:STDOUT: ; Function Attrs: nounwind
    108. 

  108. // CHECK:STDOUT: define linkonce_odr i32 @_CA.Main.64ccbb8e5d9a0b8e(i32 %x, i32 %count) #0 !dbg !34 {
    109. 

  109. // CHECK:STDOUT: entry:
    110. 

  110. // CHECK:STDOUT:   %Int.as.OrderedWith.impl.Greater.call = icmp sgt i32 %count, 4, !dbg !40
    111. 

  111. // CHECK:STDOUT:   br i1 %Int.as.OrderedWith.impl.Greater.call, label %if.then.loc22, label %if.else.loc22, !dbg !41
    112. 

  112. // CHECK:STDOUT:
    113. 

  113. // CHECK:STDOUT: if.then.loc22:                                    ; preds = %entry
    114. 

  114. // CHECK:STDOUT:   ret i32 %x, !dbg !42
    115. 

  115. // CHECK:STDOUT:
    116. 

  116. // CHECK:STDOUT: if.else.loc22:                                    ; preds = %entry
    117. 

  117. // CHECK:STDOUT:   %Int.as.ModWith.impl.Op.call = srem i32 %count, 2, !dbg !43
    118. 

  118. // CHECK:STDOUT:   %Int.as.EqWith.impl.Equal.call = icmp eq i32 %Int.as.ModWith.impl.Op.call, 0, !dbg !43
    119. 

  119. // CHECK:STDOUT:   br i1 %Int.as.EqWith.impl.Equal.call, label %if.then.loc25, label %if.else.loc25, !dbg !44
    120. 

  120. // CHECK:STDOUT:
    121. 

  121. // CHECK:STDOUT: if.then.loc25:                                    ; preds = %if.else.loc22
    122. 

  122. // CHECK:STDOUT:   %B.call = call i32 @_CB.Main.64ccbb8e5d9a0b8e(i32 %x, i32 %count), !dbg !45
    123. 

  123. // CHECK:STDOUT:   ret i32 %B.call, !dbg !46
    124. 

  124. // CHECK:STDOUT:
    125. 

  125. // CHECK:STDOUT: if.else.loc25:                                    ; preds = %if.else.loc22
    126. 

  126. // CHECK:STDOUT:   %C.call = call i32 @_CC.Main.64ccbb8e5d9a0b8e(i32 %x, i32 %count), !dbg !47
    127. 

  127. // CHECK:STDOUT:   ret i32 %C.call, !dbg !48
    128. 

  128. // CHECK:STDOUT: }
    129. 

  129. // CHECK:STDOUT:
    130. 

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

  131. // CHECK:STDOUT: define linkonce_odr double @_CA.Main.de5b400758c39a65(double %x, i32 %count) #0 !dbg !49 {
    132. 

  132. // CHECK:STDOUT: entry:
    133. 

  133. // CHECK:STDOUT:   %Int.as.OrderedWith.impl.Greater.call = icmp sgt i32 %count, 4, !dbg !55
    134. 

  134. // CHECK:STDOUT:   br i1 %Int.as.OrderedWith.impl.Greater.call, label %if.then.loc22, label %if.else.loc22, !dbg !56
    135. 

  135. // CHECK:STDOUT:
    136. 

  136. // CHECK:STDOUT: if.then.loc22:                                    ; preds = %entry
    137. 

  137. // CHECK:STDOUT:   ret double %x, !dbg !57
    138. 

  138. // CHECK:STDOUT:
    139. 

  139. // CHECK:STDOUT: if.else.loc22:                                    ; preds = %entry
    140. 

  140. // CHECK:STDOUT:   %Int.as.ModWith.impl.Op.call = srem i32 %count, 2, !dbg !58
    141. 

  141. // CHECK:STDOUT:   %Int.as.EqWith.impl.Equal.call = icmp eq i32 %Int.as.ModWith.impl.Op.call, 0, !dbg !58
    142. 

  142. // CHECK:STDOUT:   br i1 %Int.as.EqWith.impl.Equal.call, label %if.then.loc25, label %if.else.loc25, !dbg !59
    143. 

  143. // CHECK:STDOUT:
    144. 

  144. // CHECK:STDOUT: if.then.loc25:                                    ; preds = %if.else.loc22
    145. 

  145. // CHECK:STDOUT:   %B.call = call double @_CB.Main.de5b400758c39a65(double %x, i32 %count), !dbg !60
    146. 

  146. // CHECK:STDOUT:   ret double %B.call, !dbg !61
    147. 

  147. // CHECK:STDOUT:
    148. 

  148. // CHECK:STDOUT: if.else.loc25:                                    ; preds = %if.else.loc22
    149. 

  149. // CHECK:STDOUT:   %C.call = call double @_CC.Main.de5b400758c39a65(double %x, i32 %count), !dbg !62
    150. 

  150. // CHECK:STDOUT:   ret double %C.call, !dbg !63
    151. 

  151. // CHECK:STDOUT: }
    152. 

  152. // CHECK:STDOUT:
    153. 

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

  154. // CHECK:STDOUT: define linkonce_odr ptr @_CA.Main.779b9c0f3b54a7f8(ptr %x, i32 %count) #0 !dbg !64 {
    155. 

  155. // CHECK:STDOUT: entry:
    156. 

  156. // CHECK:STDOUT:   %Int.as.OrderedWith.impl.Greater.call = icmp sgt i32 %count, 4, !dbg !68
    157. 

  157. // CHECK:STDOUT:   br i1 %Int.as.OrderedWith.impl.Greater.call, label %if.then.loc22, label %if.else.loc22, !dbg !69
    158. 

  158. // CHECK:STDOUT:
    159. 

  159. // CHECK:STDOUT: if.then.loc22:                                    ; preds = %entry
    160. 

  160. // CHECK:STDOUT:   ret ptr %x, !dbg !70
    161. 

  161. // CHECK:STDOUT:
    162. 

  162. // CHECK:STDOUT: if.else.loc22:                                    ; preds = %entry
    163. 

  163. // CHECK:STDOUT:   %Int.as.ModWith.impl.Op.call = srem i32 %count, 2, !dbg !71
    164. 

  164. // CHECK:STDOUT:   %Int.as.EqWith.impl.Equal.call = icmp eq i32 %Int.as.ModWith.impl.Op.call, 0, !dbg !71
    165. 

  165. // CHECK:STDOUT:   br i1 %Int.as.EqWith.impl.Equal.call, label %if.then.loc25, label %if.else.loc25, !dbg !72
    166. 

  166. // CHECK:STDOUT:
    167. 

  167. // CHECK:STDOUT: if.then.loc25:                                    ; preds = %if.else.loc22
    168. 

  168. // CHECK:STDOUT:   %B.call = call ptr @_CB.Main.779b9c0f3b54a7f8(ptr %x, i32 %count), !dbg !73
    169. 

  169. // CHECK:STDOUT:   ret ptr %B.call, !dbg !74
    170. 

  170. // CHECK:STDOUT:
    171. 

  171. // CHECK:STDOUT: if.else.loc25:                                    ; preds = %if.else.loc22
    172. 

  172. // CHECK:STDOUT:   %C.call = call ptr @_CC.Main.779b9c0f3b54a7f8(ptr %x, i32 %count), !dbg !75
    173. 

  173. // CHECK:STDOUT:   ret ptr %C.call, !dbg !76
    174. 

  174. // CHECK:STDOUT: }
    175. 

  175. // CHECK:STDOUT:
    176. 

  176. // CHECK:STDOUT: ; Function Attrs: nounwind
    177. 

  177. // CHECK:STDOUT: define linkonce_odr i32 @_CB.Main.64ccbb8e5d9a0b8e(i32 %x, i32 %count) #0 !dbg !77 {
    178. 

  178. // CHECK:STDOUT: entry:
    179. 

  179. // CHECK:STDOUT:   %Print.call = call i32 (ptr, ...) @printf(ptr @printf.int.format, i32 1), !dbg !81
    180. 

  180. // CHECK:STDOUT:   %D.call = call i32 @_CD.Main.64ccbb8e5d9a0b8e(i32 %x, i32 %count), !dbg !82
    181. 

  181. // CHECK:STDOUT:   ret i32 %D.call, !dbg !83
    182. 

  182. // CHECK:STDOUT: }
    183. 

  183. // CHECK:STDOUT:
    184. 

  184. // CHECK:STDOUT: ; Function Attrs: nounwind
    185. 

  185. // CHECK:STDOUT: define linkonce_odr i32 @_CC.Main.64ccbb8e5d9a0b8e(i32 %x, i32 %count) #0 !dbg !84 {
    186. 

  186. // CHECK:STDOUT: entry:
    187. 

  187. // CHECK:STDOUT:   %Print.call = call i32 (ptr, ...) @printf(ptr @printf.int.format, i32 2), !dbg !88
    188. 

  188. // CHECK:STDOUT:   %D.call = call i32 @_CD.Main.64ccbb8e5d9a0b8e(i32 %x, i32 %count), !dbg !89
    189. 

  189. // CHECK:STDOUT:   ret i32 %D.call, !dbg !90
    190. 

  190. // CHECK:STDOUT: }
    191. 

  191. // CHECK:STDOUT:
    192. 

  192. // CHECK:STDOUT: ; Function Attrs: nounwind
    193. 

  193. // CHECK:STDOUT: define linkonce_odr double @_CB.Main.de5b400758c39a65(double %x, i32 %count) #0 !dbg !91 {
    194. 

  194. // CHECK:STDOUT: entry:
    195. 

  195. // CHECK:STDOUT:   %Print.call = call i32 (ptr, ...) @printf(ptr @printf.int.format, i32 1), !dbg !95
    196. 

  196. // CHECK:STDOUT:   %D.call = call double @_CD.Main.de5b400758c39a65(double %x, i32 %count), !dbg !96
    197. 

  197. // CHECK:STDOUT:   ret double %D.call, !dbg !97
    198. 

  198. // CHECK:STDOUT: }
    199. 

  199. // CHECK:STDOUT:
    200. 

  200. // CHECK:STDOUT: ; Function Attrs: nounwind
    201. 

  201. // CHECK:STDOUT: define linkonce_odr double @_CC.Main.de5b400758c39a65(double %x, i32 %count) #0 !dbg !98 {
    202. 

  202. // CHECK:STDOUT: entry:
    203. 

  203. // CHECK:STDOUT:   %Print.call = call i32 (ptr, ...) @printf(ptr @printf.int.format, i32 2), !dbg !102
    204. 

  204. // CHECK:STDOUT:   %D.call = call double @_CD.Main.de5b400758c39a65(double %x, i32 %count), !dbg !103
    205. 

  205. // CHECK:STDOUT:   ret double %D.call, !dbg !104
    206. 

  206. // CHECK:STDOUT: }
    207. 

  207. // CHECK:STDOUT:
    208. 

  208. // CHECK:STDOUT: ; Function Attrs: nounwind
    209. 

  209. // CHECK:STDOUT: define linkonce_odr ptr @_CB.Main.779b9c0f3b54a7f8(ptr %x, i32 %count) #0 !dbg !105 {
    210. 

  210. // CHECK:STDOUT: entry:
    211. 

  211. // CHECK:STDOUT:   %Print.call = call i32 (ptr, ...) @printf(ptr @printf.int.format, i32 1), !dbg !109
    212. 

  212. // CHECK:STDOUT:   %D.call = call ptr @_CD.Main.779b9c0f3b54a7f8(ptr %x, i32 %count), !dbg !110
    213. 

  213. // CHECK:STDOUT:   ret ptr %D.call, !dbg !111
    214. 

  214. // CHECK:STDOUT: }
    215. 

  215. // CHECK:STDOUT:
    216. 

  216. // CHECK:STDOUT: ; Function Attrs: nounwind
    217. 

  217. // CHECK:STDOUT: define linkonce_odr ptr @_CC.Main.779b9c0f3b54a7f8(ptr %x, i32 %count) #0 !dbg !112 {
    218. 

  218. // CHECK:STDOUT: entry:
    219. 

  219. // CHECK:STDOUT:   %Print.call = call i32 (ptr, ...) @printf(ptr @printf.int.format, i32 2), !dbg !116
    220. 

  220. // CHECK:STDOUT:   %D.call = call ptr @_CD.Main.779b9c0f3b54a7f8(ptr %x, i32 %count), !dbg !117
    221. 

  221. // CHECK:STDOUT:   ret ptr %D.call, !dbg !118
    222. 

  222. // CHECK:STDOUT: }
    223. 

  223. // CHECK:STDOUT:
    224. 

  224. // CHECK:STDOUT: declare i32 @printf(ptr, ...)
    225. 

  225. // CHECK:STDOUT:
    226. 

  226. // CHECK:STDOUT: ; Function Attrs: nounwind
    227. 

  227. // CHECK:STDOUT: define linkonce_odr i32 @_CD.Main.64ccbb8e5d9a0b8e(i32 %x, i32 %count) #0 !dbg !119 {
    228. 

  228. // CHECK:STDOUT: entry:
    229. 

  229. // CHECK:STDOUT:   %Int.as.AddWith.impl.Op.call = add i32 %count, 1, !dbg !123
    230. 

  230. // CHECK:STDOUT:   %A.call = call i32 @_CA.Main.64ccbb8e5d9a0b8e(i32 %x, i32 %Int.as.AddWith.impl.Op.call), !dbg !124
    231. 

  231. // CHECK:STDOUT:   ret i32 %A.call, !dbg !125
    232. 

  232. // CHECK:STDOUT: }
    233. 

  233. // CHECK:STDOUT:
    234. 

  234. // CHECK:STDOUT: ; Function Attrs: nounwind
    235. 

  235. // CHECK:STDOUT: define linkonce_odr double @_CD.Main.de5b400758c39a65(double %x, i32 %count) #0 !dbg !126 {
    236. 

  236. // CHECK:STDOUT: entry:
    237. 

  237. // CHECK:STDOUT:   %Int.as.AddWith.impl.Op.call = add i32 %count, 1, !dbg !130
    238. 

  238. // CHECK:STDOUT:   %A.call = call double @_CA.Main.de5b400758c39a65(double %x, i32 %Int.as.AddWith.impl.Op.call), !dbg !131
    239. 

  239. // CHECK:STDOUT:   ret double %A.call, !dbg !132
    240. 

  240. // CHECK:STDOUT: }
    241. 

  241. // CHECK:STDOUT:
    242. 

  242. // CHECK:STDOUT: ; Function Attrs: nounwind
    243. 

  243. // CHECK:STDOUT: define linkonce_odr ptr @_CD.Main.779b9c0f3b54a7f8(ptr %x, i32 %count) #0 !dbg !133 {
    244. 

  244. // CHECK:STDOUT: entry:
    245. 

  245. // CHECK:STDOUT:   %Int.as.AddWith.impl.Op.call = add i32 %count, 1, !dbg !137
    246. 

  246. // CHECK:STDOUT:   %A.call = call ptr @_CA.Main.779b9c0f3b54a7f8(ptr %x, i32 %Int.as.AddWith.impl.Op.call), !dbg !138
    247. 

  247. // CHECK:STDOUT:   ret ptr %A.call, !dbg !139
    248. 

  248. // CHECK:STDOUT: }
    249. 

  249. // CHECK:STDOUT:
    250. 

  250. // CHECK:STDOUT: ; uselistorder directives
    251. 

  251. // CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 3, 2, 1, 0 }
    252. 

  252. // CHECK:STDOUT: uselistorder ptr @_CA.Main.779b9c0f3b54a7f8, { 1, 2, 0 }
    253. 

  253. // CHECK:STDOUT: uselistorder ptr @printf, { 5, 4, 3, 2, 1, 0 }
    254. 

  254. // CHECK:STDOUT: uselistorder ptr @_CD.Main.64ccbb8e5d9a0b8e, { 1, 0 }
    255. 

  255. // CHECK:STDOUT: uselistorder ptr @_CD.Main.de5b400758c39a65, { 1, 0 }
    256. 

  256. // CHECK:STDOUT: uselistorder ptr @_CD.Main.779b9c0f3b54a7f8, { 1, 0 }
    257. 

  257. // CHECK:STDOUT:
    258. 

  258. // CHECK:STDOUT: attributes #0 = { nounwind }
    259. 

  259. // CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
    260. 

  260. // CHECK:STDOUT:
    261. 

  261. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
    262. 

  262. // CHECK:STDOUT: !llvm.dbg.cu = !{!2}
    263. 

  263. // CHECK:STDOUT:
    264. 

  264. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    265. 

  265. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    266. 

  266. // CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    267. 

  267. // CHECK:STDOUT: !3 = !DIFile(filename: "call_recursive_diamond.carbon", directory: "")
    268. 

  268. // CHECK:STDOUT: !4 = distinct !DISubprogram(name: "M", linkageName: "_CM.Main", scope: null, file: !3, line: 47, type: !5, spFlags: DISPFlagDefinition, unit: !2)
    269. 

  269. // CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
    270. 

  270. // CHECK:STDOUT: !6 = !{null}
    271. 

  271. // CHECK:STDOUT: !7 = !DILocation(line: 48, column: 3, scope: !4)
    272. 

  272. // CHECK:STDOUT: !8 = !DILocation(line: 49, column: 3, scope: !4)
    273. 

  273. // CHECK:STDOUT: !9 = !DILocation(line: 50, column: 3, scope: !4)
    274. 

  274. // CHECK:STDOUT: !10 = !DILocation(line: 51, column: 3, scope: !4)
    275. 

  275. // CHECK:STDOUT: !11 = !DILocation(line: 53, column: 5, scope: !4)
    276. 

  276. // CHECK:STDOUT: !12 = !DILocation(line: 53, column: 3, scope: !4)
    277. 

  277. // CHECK:STDOUT: !13 = !DILocation(line: 54, column: 5, scope: !4)
    278. 

  278. // CHECK:STDOUT: !14 = !DILocation(line: 54, column: 3, scope: !4)
    279. 

  279. // CHECK:STDOUT: !15 = !DILocation(line: 55, column: 5, scope: !4)
    280. 

  280. // CHECK:STDOUT: !16 = !DILocation(line: 55, column: 3, scope: !4)
    281. 

  281. // CHECK:STDOUT: !17 = !DILocation(line: 56, column: 5, scope: !4)
    282. 

  282. // CHECK:STDOUT: !18 = !DILocation(line: 56, column: 3, scope: !4)
    283. 

  283. // CHECK:STDOUT: !19 = !DILocation(line: 47, column: 1, scope: !4)
    284. 

  284. // CHECK:STDOUT: !20 = distinct !DISubprogram(name: "Op", linkageName: "_COp.98006a366c2ffd6c:core.Destroy.Core", scope: null, file: !3, line: 49, type: !21, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !24)
    285. 

  285. // CHECK:STDOUT: !21 = !DISubroutineType(types: !22)
    286. 

  286. // CHECK:STDOUT: !22 = !{null, !23}
    287. 

  287. // CHECK:STDOUT: !23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
    288. 

  288. // CHECK:STDOUT: !24 = !{!25}
    289. 

  289. // CHECK:STDOUT: !25 = !DILocalVariable(arg: 1, scope: !20, type: !23)
    290. 

  290. // CHECK:STDOUT: !26 = !DILocation(line: 49, column: 3, scope: !20)
    291. 

  291. // CHECK:STDOUT: !27 = distinct !DISubprogram(name: "Op", linkageName: "_COp.7e389eab4a7e5487:core.Destroy.Core", scope: null, file: !3, line: 48, type: !28, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !31)
    292. 

  292. // CHECK:STDOUT: !28 = !DISubroutineType(types: !29)
    293. 

  293. // CHECK:STDOUT: !29 = !{null, !30}
    294. 

  294. // CHECK:STDOUT: !30 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
    295. 

  295. // CHECK:STDOUT: !31 = !{!32}
    296. 

  296. // CHECK:STDOUT: !32 = !DILocalVariable(arg: 1, scope: !27, type: !30)
    297. 

  297. // CHECK:STDOUT: !33 = !DILocation(line: 48, column: 3, scope: !27)
    298. 

  298. // CHECK:STDOUT: !34 = distinct !DISubprogram(name: "A", linkageName: "_CA.Main.64ccbb8e5d9a0b8e", scope: null, file: !3, line: 21, type: !35, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !37)
    299. 

  299. // CHECK:STDOUT: !35 = !DISubroutineType(types: !36)
    300. 

  300. // CHECK:STDOUT: !36 = !{!30, !30, !30}
    301. 

  301. // CHECK:STDOUT: !37 = !{!38, !39}
    302. 

  302. // CHECK:STDOUT: !38 = !DILocalVariable(arg: 1, scope: !34, type: !30)
    303. 

  303. // CHECK:STDOUT: !39 = !DILocalVariable(arg: 2, scope: !34, type: !30)
    304. 

  304. // CHECK:STDOUT: !40 = !DILocation(line: 22, column: 7, scope: !34)
    305. 

  305. // CHECK:STDOUT: !41 = !DILocation(line: 22, column: 6, scope: !34)
    306. 

  306. // CHECK:STDOUT: !42 = !DILocation(line: 23, column: 5, scope: !34)
    307. 

  307. // CHECK:STDOUT: !43 = !DILocation(line: 25, column: 7, scope: !34)
    308. 

  308. // CHECK:STDOUT: !44 = !DILocation(line: 25, column: 6, scope: !34)
    309. 

  309. // CHECK:STDOUT: !45 = !DILocation(line: 26, column: 12, scope: !34)
    310. 

  310. // CHECK:STDOUT: !46 = !DILocation(line: 26, column: 5, scope: !34)
    311. 

  311. // CHECK:STDOUT: !47 = !DILocation(line: 28, column: 12, scope: !34)
    312. 

  312. // CHECK:STDOUT: !48 = !DILocation(line: 28, column: 5, scope: !34)
    313. 

  313. // CHECK:STDOUT: !49 = distinct !DISubprogram(name: "A", linkageName: "_CA.Main.de5b400758c39a65", scope: null, file: !3, line: 21, type: !50, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !52)
    314. 

  314. // CHECK:STDOUT: !50 = !DISubroutineType(types: !51)
    315. 

  315. // CHECK:STDOUT: !51 = !{!23, !23, !30}
    316. 

  316. // CHECK:STDOUT: !52 = !{!53, !54}
    317. 

  317. // CHECK:STDOUT: !53 = !DILocalVariable(arg: 1, scope: !49, type: !23)
    318. 

  318. // CHECK:STDOUT: !54 = !DILocalVariable(arg: 2, scope: !49, type: !30)
    319. 

  319. // CHECK:STDOUT: !55 = !DILocation(line: 22, column: 7, scope: !49)
    320. 

  320. // CHECK:STDOUT: !56 = !DILocation(line: 22, column: 6, scope: !49)
    321. 

  321. // CHECK:STDOUT: !57 = !DILocation(line: 23, column: 5, scope: !49)
    322. 

  322. // CHECK:STDOUT: !58 = !DILocation(line: 25, column: 7, scope: !49)
    323. 

  323. // CHECK:STDOUT: !59 = !DILocation(line: 25, column: 6, scope: !49)
    324. 

  324. // CHECK:STDOUT: !60 = !DILocation(line: 26, column: 12, scope: !49)
    325. 

  325. // CHECK:STDOUT: !61 = !DILocation(line: 26, column: 5, scope: !49)
    326. 

  326. // CHECK:STDOUT: !62 = !DILocation(line: 28, column: 12, scope: !49)
    327. 

  327. // CHECK:STDOUT: !63 = !DILocation(line: 28, column: 5, scope: !49)
    328. 

  328. // CHECK:STDOUT: !64 = distinct !DISubprogram(name: "A", linkageName: "_CA.Main.779b9c0f3b54a7f8", scope: null, file: !3, line: 21, type: !50, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !65)
    329. 

  329. // CHECK:STDOUT: !65 = !{!66, !67}
    330. 

  330. // CHECK:STDOUT: !66 = !DILocalVariable(arg: 1, scope: !64, type: !23)
    331. 

  331. // CHECK:STDOUT: !67 = !DILocalVariable(arg: 2, scope: !64, type: !30)
    332. 

  332. // CHECK:STDOUT: !68 = !DILocation(line: 22, column: 7, scope: !64)
    333. 

  333. // CHECK:STDOUT: !69 = !DILocation(line: 22, column: 6, scope: !64)
    334. 

  334. // CHECK:STDOUT: !70 = !DILocation(line: 23, column: 5, scope: !64)
    335. 

  335. // CHECK:STDOUT: !71 = !DILocation(line: 25, column: 7, scope: !64)
    336. 

  336. // CHECK:STDOUT: !72 = !DILocation(line: 25, column: 6, scope: !64)
    337. 

  337. // CHECK:STDOUT: !73 = !DILocation(line: 26, column: 12, scope: !64)
    338. 

  338. // CHECK:STDOUT: !74 = !DILocation(line: 26, column: 5, scope: !64)
    339. 

  339. // CHECK:STDOUT: !75 = !DILocation(line: 28, column: 12, scope: !64)
    340. 

  340. // CHECK:STDOUT: !76 = !DILocation(line: 28, column: 5, scope: !64)
    341. 

  341. // CHECK:STDOUT: !77 = distinct !DISubprogram(name: "B", linkageName: "_CB.Main.64ccbb8e5d9a0b8e", scope: null, file: !3, line: 33, type: !35, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !78)
    342. 

  342. // CHECK:STDOUT: !78 = !{!79, !80}
    343. 

  343. // CHECK:STDOUT: !79 = !DILocalVariable(arg: 1, scope: !77, type: !30)
    344. 

  344. // CHECK:STDOUT: !80 = !DILocalVariable(arg: 2, scope: !77, type: !30)
    345. 

  345. // CHECK:STDOUT: !81 = !DILocation(line: 34, column: 3, scope: !77)
    346. 

  346. // CHECK:STDOUT: !82 = !DILocation(line: 35, column: 10, scope: !77)
    347. 

  347. // CHECK:STDOUT: !83 = !DILocation(line: 35, column: 3, scope: !77)
    348. 

  348. // CHECK:STDOUT: !84 = distinct !DISubprogram(name: "C", linkageName: "_CC.Main.64ccbb8e5d9a0b8e", scope: null, file: !3, line: 38, type: !35, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !85)
    349. 

  349. // CHECK:STDOUT: !85 = !{!86, !87}
    350. 

  350. // CHECK:STDOUT: !86 = !DILocalVariable(arg: 1, scope: !84, type: !30)
    351. 

  351. // CHECK:STDOUT: !87 = !DILocalVariable(arg: 2, scope: !84, type: !30)
    352. 

  352. // CHECK:STDOUT: !88 = !DILocation(line: 39, column: 3, scope: !84)
    353. 

  353. // CHECK:STDOUT: !89 = !DILocation(line: 40, column: 10, scope: !84)
    354. 

  354. // CHECK:STDOUT: !90 = !DILocation(line: 40, column: 3, scope: !84)
    355. 

  355. // CHECK:STDOUT: !91 = distinct !DISubprogram(name: "B", linkageName: "_CB.Main.de5b400758c39a65", scope: null, file: !3, line: 33, type: !50, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !92)
    356. 

  356. // CHECK:STDOUT: !92 = !{!93, !94}
    357. 

  357. // CHECK:STDOUT: !93 = !DILocalVariable(arg: 1, scope: !91, type: !23)
    358. 

  358. // CHECK:STDOUT: !94 = !DILocalVariable(arg: 2, scope: !91, type: !30)
    359. 

  359. // CHECK:STDOUT: !95 = !DILocation(line: 34, column: 3, scope: !91)
    360. 

  360. // CHECK:STDOUT: !96 = !DILocation(line: 35, column: 10, scope: !91)
    361. 

  361. // CHECK:STDOUT: !97 = !DILocation(line: 35, column: 3, scope: !91)
    362. 

  362. // CHECK:STDOUT: !98 = distinct !DISubprogram(name: "C", linkageName: "_CC.Main.de5b400758c39a65", scope: null, file: !3, line: 38, type: !50, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !99)
    363. 

  363. // CHECK:STDOUT: !99 = !{!100, !101}
    364. 

  364. // CHECK:STDOUT: !100 = !DILocalVariable(arg: 1, scope: !98, type: !23)
    365. 

  365. // CHECK:STDOUT: !101 = !DILocalVariable(arg: 2, scope: !98, type: !30)
    366. 

  366. // CHECK:STDOUT: !102 = !DILocation(line: 39, column: 3, scope: !98)
    367. 

  367. // CHECK:STDOUT: !103 = !DILocation(line: 40, column: 10, scope: !98)
    368. 

  368. // CHECK:STDOUT: !104 = !DILocation(line: 40, column: 3, scope: !98)
    369. 

  369. // CHECK:STDOUT: !105 = distinct !DISubprogram(name: "B", linkageName: "_CB.Main.779b9c0f3b54a7f8", scope: null, file: !3, line: 33, type: !50, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !106)
    370. 

  370. // CHECK:STDOUT: !106 = !{!107, !108}
    371. 

  371. // CHECK:STDOUT: !107 = !DILocalVariable(arg: 1, scope: !105, type: !23)
    372. 

  372. // CHECK:STDOUT: !108 = !DILocalVariable(arg: 2, scope: !105, type: !30)
    373. 

  373. // CHECK:STDOUT: !109 = !DILocation(line: 34, column: 3, scope: !105)
    374. 

  374. // CHECK:STDOUT: !110 = !DILocation(line: 35, column: 10, scope: !105)
    375. 

  375. // CHECK:STDOUT: !111 = !DILocation(line: 35, column: 3, scope: !105)
    376. 

  376. // CHECK:STDOUT: !112 = distinct !DISubprogram(name: "C", linkageName: "_CC.Main.779b9c0f3b54a7f8", scope: null, file: !3, line: 38, type: !50, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !113)
    377. 

  377. // CHECK:STDOUT: !113 = !{!114, !115}
    378. 

  378. // CHECK:STDOUT: !114 = !DILocalVariable(arg: 1, scope: !112, type: !23)
    379. 

  379. // CHECK:STDOUT: !115 = !DILocalVariable(arg: 2, scope: !112, type: !30)
    380. 

  380. // CHECK:STDOUT: !116 = !DILocation(line: 39, column: 3, scope: !112)
    381. 

  381. // CHECK:STDOUT: !117 = !DILocation(line: 40, column: 10, scope: !112)
    382. 

  382. // CHECK:STDOUT: !118 = !DILocation(line: 40, column: 3, scope: !112)
    383. 

  383. // CHECK:STDOUT: !119 = distinct !DISubprogram(name: "D", linkageName: "_CD.Main.64ccbb8e5d9a0b8e", scope: null, file: !3, line: 43, type: !35, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !120)
    384. 

  384. // CHECK:STDOUT: !120 = !{!121, !122}
    385. 

  385. // CHECK:STDOUT: !121 = !DILocalVariable(arg: 1, scope: !119, type: !30)
    386. 

  386. // CHECK:STDOUT: !122 = !DILocalVariable(arg: 2, scope: !119, type: !30)
    387. 

  387. // CHECK:STDOUT: !123 = !DILocation(line: 44, column: 15, scope: !119)
    388. 

  388. // CHECK:STDOUT: !124 = !DILocation(line: 44, column: 10, scope: !119)
    389. 

  389. // CHECK:STDOUT: !125 = !DILocation(line: 44, column: 3, scope: !119)
    390. 

  390. // CHECK:STDOUT: !126 = distinct !DISubprogram(name: "D", linkageName: "_CD.Main.de5b400758c39a65", scope: null, file: !3, line: 43, type: !50, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !127)
    391. 

  391. // CHECK:STDOUT: !127 = !{!128, !129}
    392. 

  392. // CHECK:STDOUT: !128 = !DILocalVariable(arg: 1, scope: !126, type: !23)
    393. 

  393. // CHECK:STDOUT: !129 = !DILocalVariable(arg: 2, scope: !126, type: !30)
    394. 

  394. // CHECK:STDOUT: !130 = !DILocation(line: 44, column: 15, scope: !126)
    395. 

  395. // CHECK:STDOUT: !131 = !DILocation(line: 44, column: 10, scope: !126)
    396. 

  396. // CHECK:STDOUT: !132 = !DILocation(line: 44, column: 3, scope: !126)
    397. 

  397. // CHECK:STDOUT: !133 = distinct !DISubprogram(name: "D", linkageName: "_CD.Main.779b9c0f3b54a7f8", scope: null, file: !3, line: 43, type: !50, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !134)
    398. 

  398. // CHECK:STDOUT: !134 = !{!135, !136}
    399. 

  399. // CHECK:STDOUT: !135 = !DILocalVariable(arg: 1, scope: !133, type: !23)
    400. 

  400. // CHECK:STDOUT: !136 = !DILocalVariable(arg: 2, scope: !133, type: !30)
    401. 

  401. // CHECK:STDOUT: !137 = !DILocation(line: 44, column: 15, scope: !133)
    402. 

  402. // CHECK:STDOUT: !138 = !DILocation(line: 44, column: 10, scope: !133)
    403. 

  403. // CHECK:STDOUT: !139 = !DILocation(line: 44, column: 3, scope: !133)
    404.