clang/test/CodeGen/debug-info-unused-types.c

   1 // RUN: %clang_cc1 -debug-info-kind=unused-types -emit-llvm -o - %s | FileCheck %s
   2 // RUN: %clang_cc1 -debug-info-kind=limited -emit-llvm -o - %s | FileCheck --check-prefix=NODBG %s
   3 typedef int my_int;
   4 struct foo {};
   5 enum bar { BAR };
   6 union baz {};
   7
   8 void quux(void) {
   9   typedef int x;
  10   struct y {};
  11   enum z { Z };
  12   union w {};
  13 }
  14
  15 // Check that debug info is emitted for the typedef, struct, enum, and union
  16 // when -fno-eliminate-unused-debug-types and -g are set.
  17
  18 // CHECK: !DICompileUnit{{.+}}retainedTypes: [[RETTYPES:![0-9]+]]
  19 // CHECK: [[TYPE0:![0-9]+]] = !DICompositeType(tag: DW_TAG_enumeration_type, name: "bar"
  20 // CHECK: [[TYPE1:![0-9]+]] = !DIEnumerator(name: "BAR"
  21 // CHECK: [[TYPE2:![0-9]+]] = !DICompositeType(tag: DW_TAG_enumeration_type, name: "z"
  22 // CHECK: [[TYPE3:![0-9]+]] = !DIEnumerator(name: "Z"
  23 // CHECK: [[RETTYPES]] = !{[[TYPE4:![0-9]+]], [[TYPE5:![0-9]+]], [[TYPE0]], [[TYPE6:![0-9]+]], {{![0-9]+}}, [[TYPE7:![0-9]+]], [[TYPE2]], [[TYPE8:![0-9]+]]}
  24 // CHECK: [[TYPE4]] = !DIDerivedType(tag: DW_TAG_typedef, name: "my_int"
  25 // CHECK: [[TYPE5]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
  26 // CHECK: [[TYPE6]] = distinct !DICompositeType(tag: DW_TAG_union_type, name: "baz"
  27 // CHECK: [[TYPE7]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "y"
  28 // CHECK: [[TYPE8]] = distinct !DICompositeType(tag: DW_TAG_union_type, name: "w"
  29
  30 // Check that debug info is not emitted for the typedef, struct, enum, and
  31 // union when -fno-eliminate-unused-debug-types and -g are not set. These are
  32 // the same checks as above with `NODBG-NOT` rather than `CHECK`.
  33
  34 // NODBG-NOT: !DI{{CompositeType|Enumerator|DerivedType}}
  35
  36 // Check that debug info is not emitted for declarations. Obnoxious
  37 // indentifiers are to avoid collisions with the SHA emittied as debug info.
  38 struct unused_struct;
  39 enum unused_enum;
  40 union unused_union;
  41 void b0(void) {
  42   struct unused_local_struct;
  43   enum unused_local_enum;
  44   union unused_local_union;
  45 }
  46
  47 // NODBG-NOT: name: "unused_