clang/test/CodeGen/debug-info-enum.cpp

   1 // Test enumeration representation in debuig info metadata:
   2 // * test value representation for each possible underlying integer type
   3 // * test the integer type is as expected
   4 // * test the DW_AT_enum_class attribute is present (resp. absent) as expected.
   5
   6 // RUN: %clang -target x86_64-linux -g -S -emit-llvm -o - %s | FileCheck %s
   7
   8
   9 enum class E0 : signed char {
  10   A0 = -128,
  11   B0 = 127,
  12 } x0;
  13 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "E0"
  14 // CHECK-SAME: baseType: ![[SCHAR:[0-9]+]]
  15 // CHECK-SAME: DIFlagEnumClass
  16 // CHECK-SAME: elements: ![[ELTS0:[0-9]+]]
  17 // CHECK: ![[SCHAR]] = !DIBasicType(name: "signed char", size: 8, encoding: DW_ATE_signed_char)
  18 // CHECK: ![[ELTS0]] = !{![[A0:[0-9]+]], ![[B0:[0-9]+]]}
  19 // CHECK: ![[A0]] = !DIEnumerator(name: "A0", value: -128)
  20 // CHECK: ![[B0]] = !DIEnumerator(name: "B0", value: 127)
  21
  22 enum class E1 : unsigned char { A1 = 255 } x1;
  23 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "E1"
  24 // CHECK-SAME: baseType: ![[UCHAR:[0-9]+]]
  25 // CHECK-SAME: DIFlagEnumClass
  26 // CHECK-SAME: elements: ![[ELTS1:[0-9]+]]
  27 // CHECK: ![[UCHAR]] = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)
  28 // CHECK: ![[ELTS1]] = !{![[A1:[0-9]+]]}
  29 // CHECK: ![[A1]] = !DIEnumerator(name: "A1", value: 255, isUnsigned: true)
  30
  31 enum class E2 : signed short {
  32   A2 = -32768,
  33   B2 = 32767,
  34 } x2;
  35 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "E2"
  36 // CHECK-SAME: baseType: ![[SHORT:[0-9]+]]
  37 // CHECK-SAME: DIFlagEnumClass
  38 // CHECK-SAME: elements: ![[ELTS2:[0-9]+]]
  39 // CHECK: ![[SHORT]] = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)
  40 // CHECK: ![[ELTS2]] = !{![[A2:[0-9]+]], ![[B2:[0-9]+]]}
  41 // CHECK: ![[A2]] = !DIEnumerator(name: "A2", value: -32768)
  42 // CHECK: ![[B2]] = !DIEnumerator(name: "B2", value: 32767)
  43
  44 enum class E3 : unsigned short { A3 = 65535 } x3;
  45 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "E3"
  46 // CHECK-SAME: baseType: ![[USHORT:[0-9]+]]
  47 // CHECK-SAME: DIFlagEnumClass
  48 // CHECK-SAME: elements: ![[ELTS3:[0-9]+]]
  49 // CHECK: ![[USHORT]] = !DIBasicType(name: "unsigned short", size: 16, encoding: DW_ATE_unsigned)
  50 // CHECK: ![[ELTS3]] = !{![[A3:[0-9]+]]}
  51 // CHECK: ![[A3]] = !DIEnumerator(name: "A3", value: 65535, isUnsigned: true)
  52
  53 enum class E4 : signed int { A4 = -2147483648, B4 = 2147483647 } x4;
  54 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "E4"
  55 // CHECK-SAME: baseType: ![[INT:[0-9]+]]
  56 // CHECK-SAME: DIFlagEnumClass
  57 // CHECK-SAME: elements: ![[ELTS4:[0-9]+]]
  58 // CHECK: ![[INT]] = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
  59 // CHECK: ![[ELTS4]] = !{![[A4:[0-9]+]], ![[B4:[0-9]+]]}
  60 // CHECK: ![[A4]] = !DIEnumerator(name: "A4", value: -2147483648)
  61 // CHECK: ![[B4]] = !DIEnumerator(name: "B4", value: 2147483647)
  62
  63 enum class E5 : unsigned int { A5 = 4294967295 } x5;
  64 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "E5"
  65 // CHECK-SAME: baseType: ![[UINT:[0-9]+]]
  66 // CHECK-SAME: DIFlagEnumClass
  67 // CHECK-SAME: elements: ![[ELTS5:[0-9]+]]
  68 // CHECK: ![[UINT]] = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
  69 // CHECK: ![[ELTS5]] = !{![[A5:[0-9]+]]}
  70 // CHECK: ![[A5]] = !DIEnumerator(name: "A5", value: 4294967295, isUnsigned: true)
  71
  72 enum class E6 : signed long long {
  73   A6 = -9223372036854775807LL - 1,
  74   B6 = 9223372036854775807LL
  75 } x6;
  76 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "E6"
  77 // CHECK-SAME: baseType: ![[LONG:[0-9]+]]
  78 // CHECK-SAME: DIFlagEnumClass
  79 // CHECK-SAME: elements: ![[ELTS6:[0-9]+]]
  80 // CHECK: ![[LONG]] = !DIBasicType(name: "long long", size: 64, encoding: DW_ATE_signed)
  81 // CHECK: ![[ELTS6]] = !{![[A6:[0-9]+]], ![[B6:[0-9]+]]}
  82 // CHECK: ![[A6]] = !DIEnumerator(name: "A6", value: -9223372036854775808)
  83 // CHECK: ![[B6]] = !DIEnumerator(name: "B6", value: 9223372036854775807)
  84
  85 enum class E7 : unsigned long long { A7 = 18446744073709551615ULL } x7;
  86 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "E7"
  87 // CHECK-SAME: baseType: ![[ULONG:[0-9]+]]
  88 // CHECK-SAME: DIFlagEnumClass
  89 // CHECK-SAME: elements: ![[ELTS7:[0-9]+]]
  90 // CHECK: ![[ULONG]] = !DIBasicType(name: "unsigned long long", size: 64, encoding: DW_ATE_unsigned)
  91 // CHECK: ![[ELTS7]] = !{![[A7:[0-9]+]]}
  92 // CHECK: ![[A7]] = !DIEnumerator(name: "A7", value: 18446744073709551615, isUnsigned: true)
  93
  94 // Also test the FixedEnum flag is not present for old-style enumerations.
  95 enum E8 { A8 = -128, B8 = 127 } x8;
  96 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "E8"
  97 // CHECK-SAME: baseType: ![[INT]]
  98 // CHECK-NOT: DIFlagEnumClass
  99 // CHECK: !DIEnumerator(name: "A8", value: -128)
 100