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if_expr
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control_flow.carbon

control_flow.carbon 8.6 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. // AUTOUPDATE
    6. 

  6. // TIP: To test this file alone, run:
    7. 

  7. // TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/if_expr/control_flow.carbon
    8. 

  8. // TIP: To dump output, run:
    9. 

  9. // TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/if_expr/control_flow.carbon
    10. 

  10. 

  11. fn A() -> i32 { return 1; }
    12. 

  12. fn B() -> i32 { return 2; }
    13. 

  13. 

  14. fn F(b: bool) -> i32 {
    15. 

  15.   return if b then A() else B();
    16. 

  16. }
    17. 

  17. 

  18. // CHECK:STDOUT: --- control_flow.carbon
    19. 

  19. // CHECK:STDOUT:
    20. 

  20. // CHECK:STDOUT: constants {
    21. 

  21. // CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [template]
    22. 

  22. // CHECK:STDOUT:   %i32: type = class_type @Int, @Int(%int_32) [template]
    23. 

  23. // CHECK:STDOUT:   %A.type: type = fn_type @A [template]
    24. 

  24. // CHECK:STDOUT:   %A: %A.type = struct_value () [template]
    25. 

  25. // CHECK:STDOUT:   %int_1.1: Core.IntLiteral = int_value 1 [template]
    26. 

  26. // CHECK:STDOUT:   %Convert.type.2: type = fn_type @Convert.1, @ImplicitAs(%i32) [template]
    27. 

  27. // CHECK:STDOUT:   %Convert.type.10: type = fn_type @Convert.2, @impl.1(%int_32) [template]
    28. 

  28. // CHECK:STDOUT:   %Convert.10: %Convert.type.10 = struct_value () [template]
    29. 

  29. // CHECK:STDOUT:   %interface.19: <witness> = interface_witness (%Convert.10) [template]
    30. 

  30. // CHECK:STDOUT:   %Convert.bound.1: <bound method> = bound_method %int_1.1, %Convert.10 [template]
    31. 

  31. // CHECK:STDOUT:   %Convert.specific_fn.1: <specific function> = specific_function %Convert.bound.1, @Convert.2(%int_32) [template]
    32. 

  32. // CHECK:STDOUT:   %int_1.2: %i32 = int_value 1 [template]
    33. 

  33. // CHECK:STDOUT:   %B.type: type = fn_type @B [template]
    34. 

  34. // CHECK:STDOUT:   %B: %B.type = struct_value () [template]
    35. 

  35. // CHECK:STDOUT:   %int_2.1: Core.IntLiteral = int_value 2 [template]
    36. 

  36. // CHECK:STDOUT:   %Convert.bound.2: <bound method> = bound_method %int_2.1, %Convert.10 [template]
    37. 

  37. // CHECK:STDOUT:   %Convert.specific_fn.2: <specific function> = specific_function %Convert.bound.2, @Convert.2(%int_32) [template]
    38. 

  38. // CHECK:STDOUT:   %int_2.2: %i32 = int_value 2 [template]
    39. 

  39. // CHECK:STDOUT:   %Bool.type: type = fn_type @Bool [template]
    40. 

  40. // CHECK:STDOUT:   %Bool: %Bool.type = struct_value () [template]
    41. 

  41. // CHECK:STDOUT:   %F.type: type = fn_type @F [template]
    42. 

  42. // CHECK:STDOUT:   %F: %F.type = struct_value () [template]
    43. 

  43. // CHECK:STDOUT: }
    44. 

  44. // CHECK:STDOUT:
    45. 

  45. // CHECK:STDOUT: imports {
    46. 

  46. // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
    47. 

  47. // CHECK:STDOUT:     .Int = %import_ref.1
    48. 

  48. // CHECK:STDOUT:     .ImplicitAs = %import_ref.5
    49. 

  49. // CHECK:STDOUT:     .Bool = %import_ref.229
    50. 

  50. // CHECK:STDOUT:     import Core//prelude
    51. 

  51. // CHECK:STDOUT:     import Core//prelude/...
    52. 

  52. // CHECK:STDOUT:   }
    53. 

  53. // CHECK:STDOUT: }
    54. 

  54. // CHECK:STDOUT:
    55. 

  55. // CHECK:STDOUT: file {
    56. 

  56. // CHECK:STDOUT:   package: <namespace> = namespace [template] {
    57. 

  57. // CHECK:STDOUT:     .Core = imports.%Core
    58. 

  58. // CHECK:STDOUT:     .A = %A.decl
    59. 

  59. // CHECK:STDOUT:     .B = %B.decl
    60. 

  60. // CHECK:STDOUT:     .F = %F.decl
    61. 

  61. // CHECK:STDOUT:   }
    62. 

  62. // CHECK:STDOUT:   %Core.import = import Core
    63. 

  63. // CHECK:STDOUT:   %A.decl: %A.type = fn_decl @A [template = constants.%A] {
    64. 

  64. // CHECK:STDOUT:     %return.patt: %i32 = return_slot_pattern
    65. 

  65. // CHECK:STDOUT:     %return.param_patt: %i32 = out_param_pattern %return.patt, runtime_param0
    66. 

  66. // CHECK:STDOUT:   } {
    67. 

  67. // CHECK:STDOUT:     %int_32: Core.IntLiteral = int_value 32 [template = constants.%int_32]
    68. 

  68. // CHECK:STDOUT:     %i32: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
    69. 

  69. // CHECK:STDOUT:     %return.param: ref %i32 = out_param runtime_param0
    70. 

  70. // CHECK:STDOUT:     %return: ref %i32 = return_slot %return.param
    71. 

  71. // CHECK:STDOUT:   }
    72. 

  72. // CHECK:STDOUT:   %B.decl: %B.type = fn_decl @B [template = constants.%B] {
    73. 

  73. // CHECK:STDOUT:     %return.patt: %i32 = return_slot_pattern
    74. 

  74. // CHECK:STDOUT:     %return.param_patt: %i32 = out_param_pattern %return.patt, runtime_param0
    75. 

  75. // CHECK:STDOUT:   } {
    76. 

  76. // CHECK:STDOUT:     %int_32: Core.IntLiteral = int_value 32 [template = constants.%int_32]
    77. 

  77. // CHECK:STDOUT:     %i32: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
    78. 

  78. // CHECK:STDOUT:     %return.param: ref %i32 = out_param runtime_param0
    79. 

  79. // CHECK:STDOUT:     %return: ref %i32 = return_slot %return.param
    80. 

  80. // CHECK:STDOUT:   }
    81. 

  81. // CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [template = constants.%F] {
    82. 

  82. // CHECK:STDOUT:     %b.patt: bool = binding_pattern b
    83. 

  83. // CHECK:STDOUT:     %b.param_patt: bool = value_param_pattern %b.patt, runtime_param0
    84. 

  84. // CHECK:STDOUT:     %return.patt: %i32 = return_slot_pattern
    85. 

  85. // CHECK:STDOUT:     %return.param_patt: %i32 = out_param_pattern %return.patt, runtime_param1
    86. 

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

  87. // CHECK:STDOUT:     %int_32: Core.IntLiteral = int_value 32 [template = constants.%int_32]
    88. 

  88. // CHECK:STDOUT:     %i32: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
    89. 

  89. // CHECK:STDOUT:     %b.param: bool = value_param runtime_param0
    90. 

  90. // CHECK:STDOUT:     %.loc14_9.1: type = splice_block %.loc14_9.3 [template = bool] {
    91. 

  91. // CHECK:STDOUT:       %bool.make_type: init type = call constants.%Bool() [template = bool]
    92. 

  92. // CHECK:STDOUT:       %.loc14_9.2: type = value_of_initializer %bool.make_type [template = bool]
    93. 

  93. // CHECK:STDOUT:       %.loc14_9.3: type = converted %bool.make_type, %.loc14_9.2 [template = bool]
    94. 

  94. // CHECK:STDOUT:     }
    95. 

  95. // CHECK:STDOUT:     %b: bool = bind_name b, %b.param
    96. 

  96. // CHECK:STDOUT:     %return.param: ref %i32 = out_param runtime_param1
    97. 

  97. // CHECK:STDOUT:     %return: ref %i32 = return_slot %return.param
    98. 

  98. // CHECK:STDOUT:   }
    99. 

  99. // CHECK:STDOUT: }
    100. 

  100. // CHECK:STDOUT:
    101. 

  101. // CHECK:STDOUT: fn @A() -> %i32 {
    102. 

  102. // CHECK:STDOUT: !entry:
    103. 

  103. // CHECK:STDOUT:   %int_1: Core.IntLiteral = int_value 1 [template = constants.%int_1.1]
    104. 

  104. // CHECK:STDOUT:   %impl.elem0: %Convert.type.2 = interface_witness_access constants.%interface.19, element0 [template = constants.%Convert.10]
    105. 

  105. // CHECK:STDOUT:   %Convert.bound: <bound method> = bound_method %int_1, %impl.elem0 [template = constants.%Convert.bound.1]
    106. 

  106. // CHECK:STDOUT:   %Convert.specific_fn: <specific function> = specific_function %Convert.bound, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.1]
    107. 

  107. // CHECK:STDOUT:   %int.convert_checked: init %i32 = call %Convert.specific_fn(%int_1) [template = constants.%int_1.2]
    108. 

  108. // CHECK:STDOUT:   %.loc11_25.1: %i32 = value_of_initializer %int.convert_checked [template = constants.%int_1.2]
    109. 

  109. // CHECK:STDOUT:   %.loc11_25.2: %i32 = converted %int_1, %.loc11_25.1 [template = constants.%int_1.2]
    110. 

  110. // CHECK:STDOUT:   return %.loc11_25.2
    111. 

  111. // CHECK:STDOUT: }
    112. 

  112. // CHECK:STDOUT:
    113. 

  113. // CHECK:STDOUT: fn @B() -> %i32 {
    114. 

  114. // CHECK:STDOUT: !entry:
    115. 

  115. // CHECK:STDOUT:   %int_2: Core.IntLiteral = int_value 2 [template = constants.%int_2.1]
    116. 

  116. // CHECK:STDOUT:   %impl.elem0: %Convert.type.2 = interface_witness_access constants.%interface.19, element0 [template = constants.%Convert.10]
    117. 

  117. // CHECK:STDOUT:   %Convert.bound: <bound method> = bound_method %int_2, %impl.elem0 [template = constants.%Convert.bound.2]
    118. 

  118. // CHECK:STDOUT:   %Convert.specific_fn: <specific function> = specific_function %Convert.bound, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.2]
    119. 

  119. // CHECK:STDOUT:   %int.convert_checked: init %i32 = call %Convert.specific_fn(%int_2) [template = constants.%int_2.2]
    120. 

  120. // CHECK:STDOUT:   %.loc12_25.1: %i32 = value_of_initializer %int.convert_checked [template = constants.%int_2.2]
    121. 

  121. // CHECK:STDOUT:   %.loc12_25.2: %i32 = converted %int_2, %.loc12_25.1 [template = constants.%int_2.2]
    122. 

  122. // CHECK:STDOUT:   return %.loc12_25.2
    123. 

  123. // CHECK:STDOUT: }
    124. 

  124. // CHECK:STDOUT:
    125. 

  125. // CHECK:STDOUT: fn @F(%b.param_patt: bool) -> %i32 {
    126. 

  126. // CHECK:STDOUT: !entry:
    127. 

  127. // CHECK:STDOUT:   %b.ref: bool = name_ref b, %b
    128. 

  128. // CHECK:STDOUT:   if %b.ref br !if.expr.then else br !if.expr.else
    129. 

  129. // CHECK:STDOUT:
    130. 

  130. // CHECK:STDOUT: !if.expr.then:
    131. 

  131. // CHECK:STDOUT:   %A.ref: %A.type = name_ref A, file.%A.decl [template = constants.%A]
    132. 

  132. // CHECK:STDOUT:   %A.call: init %i32 = call %A.ref()
    133. 

  133. // CHECK:STDOUT:   %.loc15_22.1: %i32 = value_of_initializer %A.call
    134. 

  134. // CHECK:STDOUT:   %.loc15_22.2: %i32 = converted %A.call, %.loc15_22.1
    135. 

  135. // CHECK:STDOUT:   br !if.expr.result(%.loc15_22.2)
    136. 

  136. // CHECK:STDOUT:
    137. 

  137. // CHECK:STDOUT: !if.expr.else:
    138. 

  138. // CHECK:STDOUT:   %B.ref: %B.type = name_ref B, file.%B.decl [template = constants.%B]
    139. 

  139. // CHECK:STDOUT:   %B.call: init %i32 = call %B.ref()
    140. 

  140. // CHECK:STDOUT:   %.loc15_24.1: %i32 = value_of_initializer %B.call
    141. 

  141. // CHECK:STDOUT:   %.loc15_24.2: %i32 = converted %B.call, %.loc15_24.1
    142. 

  142. // CHECK:STDOUT:   br !if.expr.result(%.loc15_24.2)
    143. 

  143. // CHECK:STDOUT:
    144. 

  144. // CHECK:STDOUT: !if.expr.result:
    145. 

  145. // CHECK:STDOUT:   %.loc15_10: %i32 = block_arg !if.expr.result
    146. 

  146. // CHECK:STDOUT:   return %.loc15_10
    147. 

  147. // CHECK:STDOUT: }
    148. 

  148. // CHECK:STDOUT:
    149.