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toolchain
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builtins
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pointer
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make_null.carbon

make_null.carbon 12 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/none.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/check/testdata/builtins/pointer/make_null.carbon
    10. 

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

  11. // TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/builtins/pointer/make_null.carbon
    12. 

  12. 

  13. // --- call_exact.carbon
    14. 

  14. 

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

  16. 

  17. class C {}
    18. 

  18. 

  19. fn MakeUnformed(t: type) -> type = "maybe_unformed.make_type";
    20. 

  20. fn MakeNullEmptyStruct() -> MakeUnformed({}*) = "pointer.make_null";
    21. 

  21. fn MakeNullC() -> MakeUnformed(C*) = "pointer.make_null";
    22. 

  22. 

  23. //@dump-sem-ir-begin
    24. 

  24. let s: MakeUnformed({}*) = MakeNullEmptyStruct();
    25. 

  25. let c: MakeUnformed(C*) = MakeNullC();
    26. 

  26. //@dump-sem-ir-end
    27. 

  27. 

  28. // --- call_generic.carbon
    29. 

  29. 

  30. library "[[@TEST_NAME]]";
    31. 

  31. 

  32. fn MakeUnformed(t: type) -> type = "maybe_unformed.make_type";
    33. 

  33. fn MakeNull(T:! type) -> MakeUnformed(T*) = "pointer.make_null";
    34. 

  34. 

  35. class C {}
    36. 

  36. 

  37. //@dump-sem-ir-begin
    38. 

  38. let s: MakeUnformed({}*) = MakeNull({});
    39. 

  39. let c: MakeUnformed(C*) = MakeNull(C);
    40. 

  40. //@dump-sem-ir-end
    41. 

  41. 

  42. // --- fail_bad_decl.carbon
    43. 

  43. 

  44. library "[[@TEST_NAME]]";
    45. 

  45. 

  46. fn MakeUnformed(t: type) -> type = "maybe_unformed.make_type";
    47. 

  47. 

  48. // CHECK:STDERR: fail_bad_decl.carbon:[[@LINE+4]]:1: error: invalid signature for builtin function "pointer.make_null" [InvalidBuiltinSignature]
    49. 

  49. // CHECK:STDERR: fn NoRetType() = "pointer.make_null";
    50. 

  50. // CHECK:STDERR: ^~~~~~~~~~~~~~~~
    51. 

  51. // CHECK:STDERR:
    52. 

  52. fn NoRetType() = "pointer.make_null";
    53. 

  53. 

  54. // CHECK:STDERR: fail_bad_decl.carbon:[[@LINE+4]]:1: error: invalid signature for builtin function "pointer.make_null" [InvalidBuiltinSignature]
    55. 

  55. // CHECK:STDERR: fn NoUnformed() -> {}* = "pointer.make_null";
    56. 

  56. // CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~
    57. 

  57. // CHECK:STDERR:
    58. 

  58. fn NoUnformed() -> {}* = "pointer.make_null";
    59. 

  59. 

  60. // CHECK:STDERR: fail_bad_decl.carbon:[[@LINE+4]]:1: error: invalid signature for builtin function "pointer.make_null" [InvalidBuiltinSignature]
    61. 

  61. // CHECK:STDERR: fn NotPointer() -> MakeUnformed({}) = "pointer.make_null";
    62. 

  62. // CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    63. 

  63. // CHECK:STDERR:
    64. 

  64. fn NotPointer() -> MakeUnformed({}) = "pointer.make_null";
    65. 

  65. 

  66. // CHECK:STDOUT: --- call_exact.carbon
    67. 

  67. // CHECK:STDOUT:
    68. 

  68. // CHECK:STDOUT: constants {
    69. 

  69. // CHECK:STDOUT:   %C: type = class_type @C [concrete]
    70. 

  70. // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
    71. 

  71. // CHECK:STDOUT:   %MakeUnformed.type: type = fn_type @MakeUnformed [concrete]
    72. 

  72. // CHECK:STDOUT:   %MakeUnformed: %MakeUnformed.type = struct_value () [concrete]
    73. 

  73. // CHECK:STDOUT:   %empty_struct: %empty_struct_type = struct_value () [concrete]
    74. 

  74. // CHECK:STDOUT:   %ptr.c28: type = ptr_type %empty_struct_type [concrete]
    75. 

  75. // CHECK:STDOUT:   %.b2d: type = maybe_unformed_type %ptr.c28 [concrete]
    76. 

  76. // CHECK:STDOUT:   %pattern_type.b42: type = pattern_type %.b2d [concrete]
    77. 

  77. // CHECK:STDOUT:   %MakeNullEmptyStruct.type: type = fn_type @MakeNullEmptyStruct [concrete]
    78. 

  78. // CHECK:STDOUT:   %MakeNullEmptyStruct: %MakeNullEmptyStruct.type = struct_value () [concrete]
    79. 

  79. // CHECK:STDOUT:   %ptr.31e: type = ptr_type %C [concrete]
    80. 

  80. // CHECK:STDOUT:   %.edf: type = maybe_unformed_type %ptr.31e [concrete]
    81. 

  81. // CHECK:STDOUT:   %pattern_type.b78: type = pattern_type %.edf [concrete]
    82. 

  82. // CHECK:STDOUT:   %MakeNullC.type: type = fn_type @MakeNullC [concrete]
    83. 

  83. // CHECK:STDOUT:   %MakeNullC: %MakeNullC.type = struct_value () [concrete]
    84. 

  84. // CHECK:STDOUT: }
    85. 

  85. // CHECK:STDOUT:
    86. 

  86. // CHECK:STDOUT: file {
    87. 

  87. // CHECK:STDOUT:   name_binding_decl {
    88. 

  88. // CHECK:STDOUT:     %s.patt: %pattern_type.b42 = value_binding_pattern s [concrete]
    89. 

  89. // CHECK:STDOUT:   }
    90. 

  90. // CHECK:STDOUT:   %.loc11_24.1: type = splice_block %.loc11_24.3 [concrete = constants.%.b2d] {
    91. 

  91. // CHECK:STDOUT:     %MakeUnformed.ref.loc11: %MakeUnformed.type = name_ref MakeUnformed, %MakeUnformed.decl [concrete = constants.%MakeUnformed]
    92. 

  92. // CHECK:STDOUT:     %.loc11_22: %empty_struct_type = struct_literal () [concrete = constants.%empty_struct]
    93. 

  93. // CHECK:STDOUT:     %.loc11_23: type = converted %.loc11_22, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
    94. 

  94. // CHECK:STDOUT:     %ptr.loc11: type = ptr_type %.loc11_23 [concrete = constants.%ptr.c28]
    95. 

  95. // CHECK:STDOUT:     %MakeUnformed.call.loc11: init type = call %MakeUnformed.ref.loc11(%ptr.loc11) [concrete = constants.%.b2d]
    96. 

  96. // CHECK:STDOUT:     %.loc11_24.2: type = value_of_initializer %MakeUnformed.call.loc11 [concrete = constants.%.b2d]
    97. 

  97. // CHECK:STDOUT:     %.loc11_24.3: type = converted %MakeUnformed.call.loc11, %.loc11_24.2 [concrete = constants.%.b2d]
    98. 

  98. // CHECK:STDOUT:   }
    99. 

  99. // CHECK:STDOUT:   %.loc11_48.1: %.b2d = value_of_initializer @__global_init.%MakeNullEmptyStruct.call
    100. 

  100. // CHECK:STDOUT:   %.loc11_48.2: %.b2d = converted @__global_init.%MakeNullEmptyStruct.call, %.loc11_48.1
    101. 

  101. // CHECK:STDOUT:   %s: %.b2d = value_binding s, %.loc11_48.2
    102. 

  102. // CHECK:STDOUT:   name_binding_decl {
    103. 

  103. // CHECK:STDOUT:     %c.patt: %pattern_type.b78 = value_binding_pattern c [concrete]
    104. 

  104. // CHECK:STDOUT:   }
    105. 

  105. // CHECK:STDOUT:   %.loc12_23.1: type = splice_block %.loc12_23.3 [concrete = constants.%.edf] {
    106. 

  106. // CHECK:STDOUT:     %MakeUnformed.ref.loc12: %MakeUnformed.type = name_ref MakeUnformed, %MakeUnformed.decl [concrete = constants.%MakeUnformed]
    107. 

  107. // CHECK:STDOUT:     %C.ref: type = name_ref C, %C.decl [concrete = constants.%C]
    108. 

  108. // CHECK:STDOUT:     %ptr.loc12: type = ptr_type %C.ref [concrete = constants.%ptr.31e]
    109. 

  109. // CHECK:STDOUT:     %MakeUnformed.call.loc12: init type = call %MakeUnformed.ref.loc12(%ptr.loc12) [concrete = constants.%.edf]
    110. 

  110. // CHECK:STDOUT:     %.loc12_23.2: type = value_of_initializer %MakeUnformed.call.loc12 [concrete = constants.%.edf]
    111. 

  111. // CHECK:STDOUT:     %.loc12_23.3: type = converted %MakeUnformed.call.loc12, %.loc12_23.2 [concrete = constants.%.edf]
    112. 

  112. // CHECK:STDOUT:   }
    113. 

  113. // CHECK:STDOUT:   %.loc12_37.1: %.edf = value_of_initializer @__global_init.%MakeNullC.call
    114. 

  114. // CHECK:STDOUT:   %.loc12_37.2: %.edf = converted @__global_init.%MakeNullC.call, %.loc12_37.1
    115. 

  115. // CHECK:STDOUT:   %c: %.edf = value_binding c, %.loc12_37.2
    116. 

  116. // CHECK:STDOUT: }
    117. 

  117. // CHECK:STDOUT:
    118. 

  118. // CHECK:STDOUT: fn @__global_init() {
    119. 

  119. // CHECK:STDOUT: !entry:
    120. 

  120. // CHECK:STDOUT:   %MakeNullEmptyStruct.ref: %MakeNullEmptyStruct.type = name_ref MakeNullEmptyStruct, file.%MakeNullEmptyStruct.decl [concrete = constants.%MakeNullEmptyStruct]
    121. 

  121. // CHECK:STDOUT:   %MakeNullEmptyStruct.call: init %.b2d = call %MakeNullEmptyStruct.ref()
    122. 

  122. // CHECK:STDOUT:   %MakeNullC.ref: %MakeNullC.type = name_ref MakeNullC, file.%MakeNullC.decl [concrete = constants.%MakeNullC]
    123. 

  123. // CHECK:STDOUT:   %MakeNullC.call: init %.edf = call %MakeNullC.ref()
    124. 

  124. // CHECK:STDOUT:   <elided>
    125. 

  125. // CHECK:STDOUT: }
    126. 

  126. // CHECK:STDOUT:
    127. 

  127. // CHECK:STDOUT: --- call_generic.carbon
    128. 

  128. // CHECK:STDOUT:
    129. 

  129. // CHECK:STDOUT: constants {
    130. 

  130. // CHECK:STDOUT:   %MakeUnformed.type: type = fn_type @MakeUnformed [concrete]
    131. 

  131. // CHECK:STDOUT:   %MakeUnformed: %MakeUnformed.type = struct_value () [concrete]
    132. 

  132. // CHECK:STDOUT:   %MakeNull.type: type = fn_type @MakeNull [concrete]
    133. 

  133. // CHECK:STDOUT:   %MakeNull: %MakeNull.type = struct_value () [concrete]
    134. 

  134. // CHECK:STDOUT:   %C: type = class_type @C [concrete]
    135. 

  135. // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
    136. 

  136. // CHECK:STDOUT:   %empty_struct: %empty_struct_type = struct_value () [concrete]
    137. 

  137. // CHECK:STDOUT:   %ptr.c28: type = ptr_type %empty_struct_type [concrete]
    138. 

  138. // CHECK:STDOUT:   %.b2d: type = maybe_unformed_type %ptr.c28 [concrete]
    139. 

  139. // CHECK:STDOUT:   %pattern_type.b42: type = pattern_type %.b2d [concrete]
    140. 

  140. // CHECK:STDOUT:   %MakeNull.specific_fn.4e3: <specific function> = specific_function %MakeNull, @MakeNull(%empty_struct_type) [concrete]
    141. 

  141. // CHECK:STDOUT:   %ptr.31e: type = ptr_type %C [concrete]
    142. 

  142. // CHECK:STDOUT:   %.edf: type = maybe_unformed_type %ptr.31e [concrete]
    143. 

  143. // CHECK:STDOUT:   %pattern_type.b78: type = pattern_type %.edf [concrete]
    144. 

  144. // CHECK:STDOUT:   %MakeNull.specific_fn.152: <specific function> = specific_function %MakeNull, @MakeNull(%C) [concrete]
    145. 

  145. // CHECK:STDOUT: }
    146. 

  146. // CHECK:STDOUT:
    147. 

  147. // CHECK:STDOUT: file {
    148. 

  148. // CHECK:STDOUT:   name_binding_decl {
    149. 

  149. // CHECK:STDOUT:     %s.patt: %pattern_type.b42 = value_binding_pattern s [concrete]
    150. 

  150. // CHECK:STDOUT:   }
    151. 

  151. // CHECK:STDOUT:   %.loc10_24.1: type = splice_block %.loc10_24.3 [concrete = constants.%.b2d] {
    152. 

  152. // CHECK:STDOUT:     %MakeUnformed.ref.loc10: %MakeUnformed.type = name_ref MakeUnformed, %MakeUnformed.decl [concrete = constants.%MakeUnformed]
    153. 

  153. // CHECK:STDOUT:     %.loc10_22: %empty_struct_type = struct_literal () [concrete = constants.%empty_struct]
    154. 

  154. // CHECK:STDOUT:     %.loc10_23: type = converted %.loc10_22, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
    155. 

  155. // CHECK:STDOUT:     %ptr.loc10: type = ptr_type %.loc10_23 [concrete = constants.%ptr.c28]
    156. 

  156. // CHECK:STDOUT:     %MakeUnformed.call.loc10: init type = call %MakeUnformed.ref.loc10(%ptr.loc10) [concrete = constants.%.b2d]
    157. 

  157. // CHECK:STDOUT:     %.loc10_24.2: type = value_of_initializer %MakeUnformed.call.loc10 [concrete = constants.%.b2d]
    158. 

  158. // CHECK:STDOUT:     %.loc10_24.3: type = converted %MakeUnformed.call.loc10, %.loc10_24.2 [concrete = constants.%.b2d]
    159. 

  159. // CHECK:STDOUT:   }
    160. 

  160. // CHECK:STDOUT:   %.loc10_39.1: %.b2d = value_of_initializer @__global_init.%MakeNull.call.loc10
    161. 

  161. // CHECK:STDOUT:   %.loc10_39.2: %.b2d = converted @__global_init.%MakeNull.call.loc10, %.loc10_39.1
    162. 

  162. // CHECK:STDOUT:   %s: %.b2d = value_binding s, %.loc10_39.2
    163. 

  163. // CHECK:STDOUT:   name_binding_decl {
    164. 

  164. // CHECK:STDOUT:     %c.patt: %pattern_type.b78 = value_binding_pattern c [concrete]
    165. 

  165. // CHECK:STDOUT:   }
    166. 

  166. // CHECK:STDOUT:   %.loc11_23.1: type = splice_block %.loc11_23.3 [concrete = constants.%.edf] {
    167. 

  167. // CHECK:STDOUT:     %MakeUnformed.ref.loc11: %MakeUnformed.type = name_ref MakeUnformed, %MakeUnformed.decl [concrete = constants.%MakeUnformed]
    168. 

  168. // CHECK:STDOUT:     %C.ref: type = name_ref C, %C.decl [concrete = constants.%C]
    169. 

  169. // CHECK:STDOUT:     %ptr.loc11: type = ptr_type %C.ref [concrete = constants.%ptr.31e]
    170. 

  170. // CHECK:STDOUT:     %MakeUnformed.call.loc11: init type = call %MakeUnformed.ref.loc11(%ptr.loc11) [concrete = constants.%.edf]
    171. 

  171. // CHECK:STDOUT:     %.loc11_23.2: type = value_of_initializer %MakeUnformed.call.loc11 [concrete = constants.%.edf]
    172. 

  172. // CHECK:STDOUT:     %.loc11_23.3: type = converted %MakeUnformed.call.loc11, %.loc11_23.2 [concrete = constants.%.edf]
    173. 

  173. // CHECK:STDOUT:   }
    174. 

  174. // CHECK:STDOUT:   %.loc11_37.1: %.edf = value_of_initializer @__global_init.%MakeNull.call.loc11
    175. 

  175. // CHECK:STDOUT:   %.loc11_37.2: %.edf = converted @__global_init.%MakeNull.call.loc11, %.loc11_37.1
    176. 

  176. // CHECK:STDOUT:   %c: %.edf = value_binding c, %.loc11_37.2
    177. 

  177. // CHECK:STDOUT: }
    178. 

  178. // CHECK:STDOUT:
    179. 

  179. // CHECK:STDOUT: fn @__global_init() {
    180. 

  180. // CHECK:STDOUT: !entry:
    181. 

  181. // CHECK:STDOUT:   %MakeNull.ref.loc10: %MakeNull.type = name_ref MakeNull, file.%MakeNull.decl [concrete = constants.%MakeNull]
    182. 

  182. // CHECK:STDOUT:   %.loc10_38: %empty_struct_type = struct_literal () [concrete = constants.%empty_struct]
    183. 

  183. // CHECK:STDOUT:   %.loc10_39: type = converted %.loc10_38, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
    184. 

  184. // CHECK:STDOUT:   %MakeNull.specific_fn.loc10: <specific function> = specific_function %MakeNull.ref.loc10, @MakeNull(constants.%empty_struct_type) [concrete = constants.%MakeNull.specific_fn.4e3]
    185. 

  185. // CHECK:STDOUT:   %MakeNull.call.loc10: init %.b2d = call %MakeNull.specific_fn.loc10()
    186. 

  186. // CHECK:STDOUT:   %MakeNull.ref.loc11: %MakeNull.type = name_ref MakeNull, file.%MakeNull.decl [concrete = constants.%MakeNull]
    187. 

  187. // CHECK:STDOUT:   %C.ref: type = name_ref C, file.%C.decl [concrete = constants.%C]
    188. 

  188. // CHECK:STDOUT:   %MakeNull.specific_fn.loc11: <specific function> = specific_function %MakeNull.ref.loc11, @MakeNull(constants.%C) [concrete = constants.%MakeNull.specific_fn.152]
    189. 

  189. // CHECK:STDOUT:   %MakeNull.call.loc11: init %.edf = call %MakeNull.specific_fn.loc11()
    190. 

  190. // CHECK:STDOUT:   <elided>
    191. 

  191. // CHECK:STDOUT: }
    192. 

  192. // CHECK:STDOUT:
    193.