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call_recursive_impl.carbon

call_recursive_impl.carbon 7.6 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. // 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_impl.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_impl.carbon
    12. 

  12. 

  13. import Core library "io";
    14. 

  14. 

  15. interface I {
    16. 

  16.   fn F();
    17. 

  17. }
    18. 

  18. class X {}
    19. 

  19. impl X as I {
    20. 

  20.   fn F() { Core.Print(1); }
    21. 

  21. }
    22. 

  22. class Y {}
    23. 

  23. impl Y as I {
    24. 

  24.   fn F() { Core.Print(2); }
    25. 

  25. }
    26. 

  26. 

  27. // Builds on "call_different_impls.carbon", cannot lower a single G due to
    28. 

  28. // different calls to F. Additionally, add recursion so the function
    29. 

  29. // fingerprint is dependent on itself.
    30. 

  30. fn G(T:! I, count: i32) -> i32 {
    31. 

  31.   T.F();
    32. 

  32. 

  33.   if (count > 0) {
    34. 

  34.     return count;
    35. 

  35.   }
    36. 

  36.   return G(T, count + 1);
    37. 

  37. }
    38. 

  38. 

  39. fn Run() {
    40. 

  40.   G(X, 0);
    41. 

  41.   G(Y, 0);
    42. 

  42. }
    43. 

  43. 

  44. // CHECK:STDOUT: ; ModuleID = 'call_recursive_impl.carbon'
    45. 

  45. // CHECK:STDOUT: source_filename = "call_recursive_impl.carbon"
    46. 

  46. // CHECK:STDOUT:
    47. 

  47. // CHECK:STDOUT: @printf.int.format = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
    48. 

  48. // CHECK:STDOUT:
    49. 

  49. // CHECK:STDOUT: ; Function Attrs: nounwind
    50. 

  50. // CHECK:STDOUT: define void @"_CF.X.Main:I.Main"() #0 !dbg !4 {
    51. 

  51. // CHECK:STDOUT: entry:
    52. 

  52. // CHECK:STDOUT:   %Print.call = call i32 (ptr, ...) @printf(ptr @printf.int.format, i32 1), !dbg !7
    53. 

  53. // CHECK:STDOUT:   ret void, !dbg !8
    54. 

  54. // CHECK:STDOUT: }
    55. 

  55. // CHECK:STDOUT:
    56. 

  56. // CHECK:STDOUT: ; Function Attrs: nounwind
    57. 

  57. // CHECK:STDOUT: define void @"_CF.Y.Main:I.Main"() #0 !dbg !9 {
    58. 

  58. // CHECK:STDOUT: entry:
    59. 

  59. // CHECK:STDOUT:   %Print.call = call i32 (ptr, ...) @printf(ptr @printf.int.format, i32 2), !dbg !10
    60. 

  60. // CHECK:STDOUT:   ret void, !dbg !11
    61. 

  61. // CHECK:STDOUT: }
    62. 

  62. // CHECK:STDOUT:
    63. 

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

  64. // CHECK:STDOUT: define void @main() #0 !dbg !12 {
    65. 

  65. // CHECK:STDOUT: entry:
    66. 

  66. // CHECK:STDOUT:   %G.call.loc40 = call i32 @_CG.Main.e55c78367db83a6b(i32 0), !dbg !13
    67. 

  67. // CHECK:STDOUT:   %G.call.loc41 = call i32 @_CG.Main.95a632fb0c368a62(i32 0), !dbg !14
    68. 

  68. // CHECK:STDOUT:   ret void, !dbg !15
    69. 

  69. // CHECK:STDOUT: }
    70. 

  70. // CHECK:STDOUT:
    71. 

  71. // CHECK:STDOUT: declare i32 @printf(ptr, ...)
    72. 

  72. // CHECK:STDOUT:
    73. 

  73. // CHECK:STDOUT: ; Function Attrs: nounwind
    74. 

  74. // CHECK:STDOUT: define linkonce_odr i32 @_CG.Main.e55c78367db83a6b(i32 %count) #0 !dbg !16 {
    75. 

  75. // CHECK:STDOUT: entry:
    76. 

  76. // CHECK:STDOUT:   call void @"_CF.X.Main:I.Main"(), !dbg !22
    77. 

  77. // CHECK:STDOUT:   %Int.as.OrderedWith.impl.Greater.call = icmp sgt i32 %count, 0, !dbg !23
    78. 

  78. // CHECK:STDOUT:   br i1 %Int.as.OrderedWith.impl.Greater.call, label %if.then, label %if.else, !dbg !24
    79. 

  79. // CHECK:STDOUT:
    80. 

  80. // CHECK:STDOUT: if.then:                                          ; preds = %entry
    81. 

  81. // CHECK:STDOUT:   ret i32 %count, !dbg !25
    82. 

  82. // CHECK:STDOUT:
    83. 

  83. // CHECK:STDOUT: if.else:                                          ; preds = %entry
    84. 

  84. // CHECK:STDOUT:   %Int.as.AddWith.impl.Op.call = add i32 %count, 1, !dbg !26
    85. 

  85. // CHECK:STDOUT:   %G.call = call i32 @_CG.Main.e55c78367db83a6b(i32 %Int.as.AddWith.impl.Op.call), !dbg !27
    86. 

  86. // CHECK:STDOUT:   ret i32 %G.call, !dbg !28
    87. 

  87. // CHECK:STDOUT: }
    88. 

  88. // CHECK:STDOUT:
    89. 

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

  90. // CHECK:STDOUT: define linkonce_odr i32 @_CG.Main.95a632fb0c368a62(i32 %count) #0 !dbg !29 {
    91. 

  91. // CHECK:STDOUT: entry:
    92. 

  92. // CHECK:STDOUT:   call void @"_CF.Y.Main:I.Main"(), !dbg !32
    93. 

  93. // CHECK:STDOUT:   %Int.as.OrderedWith.impl.Greater.call = icmp sgt i32 %count, 0, !dbg !33
    94. 

  94. // CHECK:STDOUT:   br i1 %Int.as.OrderedWith.impl.Greater.call, label %if.then, label %if.else, !dbg !34
    95. 

  95. // CHECK:STDOUT:
    96. 

  96. // CHECK:STDOUT: if.then:                                          ; preds = %entry
    97. 

  97. // CHECK:STDOUT:   ret i32 %count, !dbg !35
    98. 

  98. // CHECK:STDOUT:
    99. 

  99. // CHECK:STDOUT: if.else:                                          ; preds = %entry
    100. 

  100. // CHECK:STDOUT:   %Int.as.AddWith.impl.Op.call = add i32 %count, 1, !dbg !36
    101. 

  101. // CHECK:STDOUT:   %G.call = call i32 @_CG.Main.95a632fb0c368a62(i32 %Int.as.AddWith.impl.Op.call), !dbg !37
    102. 

  102. // CHECK:STDOUT:   ret i32 %G.call, !dbg !38
    103. 

  103. // CHECK:STDOUT: }
    104. 

  104. // CHECK:STDOUT:
    105. 

  105. // CHECK:STDOUT: ; uselistorder directives
    106. 

  106. // CHECK:STDOUT: uselistorder ptr @printf, { 1, 0 }
    107. 

  107. // CHECK:STDOUT:
    108. 

  108. // CHECK:STDOUT: attributes #0 = { nounwind }
    109. 

  109. // CHECK:STDOUT:
    110. 

  110. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
    111. 

  111. // CHECK:STDOUT: !llvm.dbg.cu = !{!2}
    112. 

  112. // CHECK:STDOUT:
    113. 

  113. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    114. 

  114. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    115. 

  115. // CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    116. 

  116. // CHECK:STDOUT: !3 = !DIFile(filename: "call_recursive_impl.carbon", directory: "")
    117. 

  117. // CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.X.Main:I.Main", scope: null, file: !3, line: 20, type: !5, spFlags: DISPFlagDefinition, unit: !2)
    118. 

  118. // CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
    119. 

  119. // CHECK:STDOUT: !6 = !{null}
    120. 

  120. // CHECK:STDOUT: !7 = !DILocation(line: 20, column: 12, scope: !4)
    121. 

  121. // CHECK:STDOUT: !8 = !DILocation(line: 20, column: 3, scope: !4)
    122. 

  122. // CHECK:STDOUT: !9 = distinct !DISubprogram(name: "F", linkageName: "_CF.Y.Main:I.Main", scope: null, file: !3, line: 24, type: !5, spFlags: DISPFlagDefinition, unit: !2)
    123. 

  123. // CHECK:STDOUT: !10 = !DILocation(line: 24, column: 12, scope: !9)
    124. 

  124. // CHECK:STDOUT: !11 = !DILocation(line: 24, column: 3, scope: !9)
    125. 

  125. // CHECK:STDOUT: !12 = distinct !DISubprogram(name: "Run", linkageName: "main", scope: null, file: !3, line: 39, type: !5, spFlags: DISPFlagDefinition, unit: !2)
    126. 

  126. // CHECK:STDOUT: !13 = !DILocation(line: 40, column: 3, scope: !12)
    127. 

  127. // CHECK:STDOUT: !14 = !DILocation(line: 41, column: 3, scope: !12)
    128. 

  128. // CHECK:STDOUT: !15 = !DILocation(line: 39, column: 1, scope: !12)
    129. 

  129. // CHECK:STDOUT: !16 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main.e55c78367db83a6b", scope: null, file: !3, line: 30, type: !17, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !20)
    130. 

  130. // CHECK:STDOUT: !17 = !DISubroutineType(types: !18)
    131. 

  131. // CHECK:STDOUT: !18 = !{!19, !19}
    132. 

  132. // CHECK:STDOUT: !19 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
    133. 

  133. // CHECK:STDOUT: !20 = !{!21}
    134. 

  134. // CHECK:STDOUT: !21 = !DILocalVariable(arg: 1, scope: !16, type: !19)
    135. 

  135. // CHECK:STDOUT: !22 = !DILocation(line: 31, column: 3, scope: !16)
    136. 

  136. // CHECK:STDOUT: !23 = !DILocation(line: 33, column: 7, scope: !16)
    137. 

  137. // CHECK:STDOUT: !24 = !DILocation(line: 33, column: 6, scope: !16)
    138. 

  138. // CHECK:STDOUT: !25 = !DILocation(line: 34, column: 5, scope: !16)
    139. 

  139. // CHECK:STDOUT: !26 = !DILocation(line: 36, column: 15, scope: !16)
    140. 

  140. // CHECK:STDOUT: !27 = !DILocation(line: 36, column: 10, scope: !16)
    141. 

  141. // CHECK:STDOUT: !28 = !DILocation(line: 36, column: 3, scope: !16)
    142. 

  142. // CHECK:STDOUT: !29 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main.95a632fb0c368a62", scope: null, file: !3, line: 30, type: !17, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !30)
    143. 

  143. // CHECK:STDOUT: !30 = !{!31}
    144. 

  144. // CHECK:STDOUT: !31 = !DILocalVariable(arg: 1, scope: !29, type: !19)
    145. 

  145. // CHECK:STDOUT: !32 = !DILocation(line: 31, column: 3, scope: !29)
    146. 

  146. // CHECK:STDOUT: !33 = !DILocation(line: 33, column: 7, scope: !29)
    147. 

  147. // CHECK:STDOUT: !34 = !DILocation(line: 33, column: 6, scope: !29)
    148. 

  148. // CHECK:STDOUT: !35 = !DILocation(line: 34, column: 5, scope: !29)
    149. 

  149. // CHECK:STDOUT: !36 = !DILocation(line: 36, column: 15, scope: !29)
    150. 

  150. // CHECK:STDOUT: !37 = !DILocation(line: 36, column: 10, scope: !29)
    151. 

  151. // CHECK:STDOUT: !38 = !DILocation(line: 36, column: 3, scope: !29)
    152.