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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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array
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layout.carbon

layout.carbon 8.8 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/array/layout.carbon
    10. 

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

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

  12. 

  13. // --- element_tail_padding.carbon
    14. 

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

  15. 

  16. fn Check(p: i32*);
    17. 

  17. 

  18. fn Test() {
    19. 

  19.   // We insert tail padding after each element (including the last) to keep the
    20. 

  20.   // array elements properly aligned and to ensure that a past-the-end address
    21. 

  21.   // points within the overall object.
    22. 

  22.   var v: array({.a: ()*, .b: i32}, 3);
    23. 

  23.   Check(&v[0].b);
    24. 

  24.   Check(&v[1].b);
    25. 

  25.   Check(&v[2].b);
    26. 

  26. }
    27. 

  27. 

  28. // --- constant_with_padding.carbon
    29. 

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

  30. 

  31. var c: array(Core.Int(257), 5) = (1, 2, 3, 4, 5);
    32. 

  32. 

  33. // CHECK:STDOUT: ; ModuleID = 'element_tail_padding.carbon'
    34. 

  34. // CHECK:STDOUT: source_filename = "element_tail_padding.carbon"
    35. 

  35. // CHECK:STDOUT:
    36. 

  36. // CHECK:STDOUT: declare void @_CCheck.Main(ptr)
    37. 

  37. // CHECK:STDOUT:
    38. 

  38. // CHECK:STDOUT: ; Function Attrs: nounwind
    39. 

  39. // CHECK:STDOUT: define void @_CTest.Main() #0 !dbg !4 {
    40. 

  40. // CHECK:STDOUT: entry:
    41. 

  41. // CHECK:STDOUT:   %v.var = alloca [3 x <{ <{ ptr, i32 }>, [4 x i8] }>], align 8, !dbg !7
    42. 

  42. // CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %v.var), !dbg !7
    43. 

  43. // CHECK:STDOUT:   %.loc10_13.array.index = getelementptr inbounds [3 x <{ <{ ptr, i32 }>, [4 x i8] }>], ptr %v.var, i32 0, i32 0, !dbg !8
    44. 

  44. // CHECK:STDOUT:   %.loc10_14.b = getelementptr inbounds nuw <{ ptr, i32 }>, ptr %.loc10_13.array.index, i32 0, i32 1, !dbg !8
    45. 

  45. // CHECK:STDOUT:   call void @_CCheck.Main(ptr %.loc10_14.b), !dbg !9
    46. 

  46. // CHECK:STDOUT:   %.loc11_13.array.index = getelementptr inbounds [3 x <{ <{ ptr, i32 }>, [4 x i8] }>], ptr %v.var, i32 0, i32 1, !dbg !10
    47. 

  47. // CHECK:STDOUT:   %.loc11_14.b = getelementptr inbounds nuw <{ ptr, i32 }>, ptr %.loc11_13.array.index, i32 0, i32 1, !dbg !10
    48. 

  48. // CHECK:STDOUT:   call void @_CCheck.Main(ptr %.loc11_14.b), !dbg !11
    49. 

  49. // CHECK:STDOUT:   %.loc12_13.array.index = getelementptr inbounds [3 x <{ <{ ptr, i32 }>, [4 x i8] }>], ptr %v.var, i32 0, i32 2, !dbg !12
    50. 

  50. // CHECK:STDOUT:   %.loc12_14.b = getelementptr inbounds nuw <{ ptr, i32 }>, ptr %.loc12_13.array.index, i32 0, i32 1, !dbg !12
    51. 

  51. // CHECK:STDOUT:   call void @_CCheck.Main(ptr %.loc12_14.b), !dbg !13
    52. 

  52. // CHECK:STDOUT:   call void @"_COp.876098026a9fba08:core.Destroy.Core"(ptr %v.var), !dbg !7
    53. 

  53. // CHECK:STDOUT:   ret void, !dbg !14
    54. 

  54. // CHECK:STDOUT: }
    55. 

  55. // CHECK:STDOUT:
    56. 

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

  57. // CHECK:STDOUT: define weak_odr void @"_COp.7e389eab4a7e5487:core.Destroy.Core"(ptr %self) #0 !dbg !15 {
    58. 

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

  59. // CHECK:STDOUT:   ret void, !dbg !21
    60. 

  60. // CHECK:STDOUT: }
    61. 

  61. // CHECK:STDOUT:
    62. 

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

  63. // CHECK:STDOUT: define weak_odr void @"_COp.5e9a928496027250:core.Destroy.Core"(ptr %self) #0 !dbg !22 {
    64. 

  64. // CHECK:STDOUT: entry:
    65. 

  65. // CHECK:STDOUT:   ret void, !dbg !28
    66. 

  66. // CHECK:STDOUT: }
    67. 

  67. // CHECK:STDOUT:
    68. 

  68. // CHECK:STDOUT: ; Function Attrs: nounwind
    69. 

  69. // CHECK:STDOUT: define weak_odr void @"_COp.876098026a9fba08:core.Destroy.Core"(ptr %self) #0 !dbg !29 {
    70. 

  70. // CHECK:STDOUT: entry:
    71. 

  71. // CHECK:STDOUT:   ret void, !dbg !32
    72. 

  72. // CHECK:STDOUT: }
    73. 

  73. // CHECK:STDOUT:
    74. 

  74. // CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
    75. 

  75. // CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #1
    76. 

  76. // CHECK:STDOUT:
    77. 

  77. // CHECK:STDOUT: attributes #0 = { nounwind }
    78. 

  78. // CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
    79. 

  79. // CHECK:STDOUT:
    80. 

  80. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
    81. 

  81. // CHECK:STDOUT: !llvm.dbg.cu = !{!2}
    82. 

  82. // CHECK:STDOUT:
    83. 

  83. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    84. 

  84. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    85. 

  85. // CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    86. 

  86. // CHECK:STDOUT: !3 = !DIFile(filename: "element_tail_padding.carbon", directory: "")
    87. 

  87. // CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Test", linkageName: "_CTest.Main", scope: null, file: !3, line: 5, type: !5, spFlags: DISPFlagDefinition, unit: !2)
    88. 

  88. // CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
    89. 

  89. // CHECK:STDOUT: !6 = !{null}
    90. 

  90. // CHECK:STDOUT: !7 = !DILocation(line: 9, column: 3, scope: !4)
    91. 

  91. // CHECK:STDOUT: !8 = !DILocation(line: 10, column: 10, scope: !4)
    92. 

  92. // CHECK:STDOUT: !9 = !DILocation(line: 10, column: 3, scope: !4)
    93. 

  93. // CHECK:STDOUT: !10 = !DILocation(line: 11, column: 10, scope: !4)
    94. 

  94. // CHECK:STDOUT: !11 = !DILocation(line: 11, column: 3, scope: !4)
    95. 

  95. // CHECK:STDOUT: !12 = !DILocation(line: 12, column: 10, scope: !4)
    96. 

  96. // CHECK:STDOUT: !13 = !DILocation(line: 12, column: 3, scope: !4)
    97. 

  97. // CHECK:STDOUT: !14 = !DILocation(line: 5, column: 1, scope: !4)
    98. 

  98. // CHECK:STDOUT: !15 = distinct !DISubprogram(name: "Op", linkageName: "_COp.7e389eab4a7e5487:core.Destroy.Core", scope: null, file: !3, line: 9, type: !16, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !19)
    99. 

  99. // CHECK:STDOUT: !16 = !DISubroutineType(types: !17)
    100. 

  100. // CHECK:STDOUT: !17 = !{null, !18}
    101. 

  101. // CHECK:STDOUT: !18 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
    102. 

  102. // CHECK:STDOUT: !19 = !{!20}
    103. 

  103. // CHECK:STDOUT: !20 = !DILocalVariable(arg: 1, scope: !15, type: !18)
    104. 

  104. // CHECK:STDOUT: !21 = !DILocation(line: 9, column: 3, scope: !15)
    105. 

  105. // CHECK:STDOUT: !22 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5e9a928496027250:core.Destroy.Core", scope: null, file: !3, line: 9, type: !23, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !26)
    106. 

  106. // CHECK:STDOUT: !23 = !DISubroutineType(types: !24)
    107. 

  107. // CHECK:STDOUT: !24 = !{null, !25}
    108. 

  108. // CHECK:STDOUT: !25 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
    109. 

  109. // CHECK:STDOUT: !26 = !{!27}
    110. 

  110. // CHECK:STDOUT: !27 = !DILocalVariable(arg: 1, scope: !22, type: !25)
    111. 

  111. // CHECK:STDOUT: !28 = !DILocation(line: 9, column: 3, scope: !22)
    112. 

  112. // CHECK:STDOUT: !29 = distinct !DISubprogram(name: "Op", linkageName: "_COp.876098026a9fba08:core.Destroy.Core", scope: null, file: !3, line: 9, type: !23, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !30)
    113. 

  113. // CHECK:STDOUT: !30 = !{!31}
    114. 

  114. // CHECK:STDOUT: !31 = !DILocalVariable(arg: 1, scope: !29, type: !25)
    115. 

  115. // CHECK:STDOUT: !32 = !DILocation(line: 9, column: 3, scope: !29)
    116. 

  116. // CHECK:STDOUT: ; ModuleID = 'constant_with_padding.carbon'
    117. 

  117. // CHECK:STDOUT: source_filename = "constant_with_padding.carbon"
    118. 

  118. // CHECK:STDOUT:
    119. 

  119. // CHECK:STDOUT: @_Cc.Main = global [5 x <{ i257, [28 x i8] }>] zeroinitializer
    120. 

  120. // CHECK:STDOUT: @array.loc3_1 = internal constant [5 x <{ i257, [28 x i8] }>] [<{ i257, [28 x i8] }> <{ i257 1, [28 x i8] poison }>, <{ i257, [28 x i8] }> <{ i257 2, [28 x i8] poison }>, <{ i257, [28 x i8] }> <{ i257 3, [28 x i8] poison }>, <{ i257, [28 x i8] }> <{ i257 4, [28 x i8] poison }>, <{ i257, [28 x i8] }> <{ i257 5, [28 x i8] poison }>]
    121. 

  121. // CHECK:STDOUT: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 0, ptr @_C__global_init.Main, ptr null }]
    122. 

  122. // CHECK:STDOUT:
    123. 

  123. // CHECK:STDOUT: ; Function Attrs: nounwind
    124. 

  124. // CHECK:STDOUT: define internal void @_C__global_init.Main() #0 !dbg !4 {
    125. 

  125. // CHECK:STDOUT: entry:
    126. 

  126. // CHECK:STDOUT:   call void @llvm.memcpy.p0.p0.i64(ptr align 1 @_Cc.Main, ptr align 1 @array.loc3_1, i64 320, i1 false), !dbg !7
    127. 

  127. // CHECK:STDOUT:   ret void, !dbg !8
    128. 

  128. // CHECK:STDOUT: }
    129. 

  129. // CHECK:STDOUT:
    130. 

  130. // CHECK:STDOUT: ; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
    131. 

  131. // CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias writeonly captures(none), ptr noalias readonly captures(none), i64, i1 immarg) #1
    132. 

  132. // CHECK:STDOUT:
    133. 

  133. // CHECK:STDOUT: attributes #0 = { nounwind }
    134. 

  134. // CHECK:STDOUT: attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
    135. 

  135. // CHECK:STDOUT:
    136. 

  136. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
    137. 

  137. // CHECK:STDOUT: !llvm.dbg.cu = !{!2}
    138. 

  138. // CHECK:STDOUT:
    139. 

  139. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    140. 

  140. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    141. 

  141. // CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    142. 

  142. // CHECK:STDOUT: !3 = !DIFile(filename: "constant_with_padding.carbon", directory: "")
    143. 

  143. // CHECK:STDOUT: !4 = distinct !DISubprogram(name: "__global_init", linkageName: "_C__global_init.Main", scope: null, file: !3, type: !5, spFlags: DISPFlagDefinition, unit: !2)
    144. 

  144. // CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
    145. 

  145. // CHECK:STDOUT: !6 = !{null}
    146. 

  146. // CHECK:STDOUT: !7 = !DILocation(line: 3, column: 1, scope: !4)
    147. 

  147. // CHECK:STDOUT: !8 = !DILocation(line: 0, scope: !4)
    148.