clang/test/CodeGenCXX/debug-info-nodebug.cpp

   1 // RUN: %clang_cc1 -DSETNODEBUG=0 -emit-llvm -std=c++14 -debug-info-kind=limited %s -o - | FileCheck %s --check-prefix=YESINFO
   2 // RUN: %clang_cc1 -DSETNODEBUG=1 -emit-llvm -std=c++14 -debug-info-kind=limited %s -o - | FileCheck %s --check-prefix=NOINFO
   3
   4 #if SETNODEBUG
   5 #define NODEBUG __attribute__((nodebug))
   6 #else
   7 #define NODEBUG
   8 #endif
   9
  10 // Const global variable. Use it so it gets emitted.
  11 NODEBUG static const int const_global_int_def = 1;
  12 void func1(int);
  13 void func2() { func1(const_global_int_def); }
  14 // YESINFO-DAG: !DIGlobalVariable(name: "const_global_int_def"
  15 // NOINFO-NOT:  !DIGlobalVariable(name: "const_global_int_def"
  16
  17 // Global variable with a more involved type.
  18 // If the variable has no debug info, the type should not appear either.
  19 struct S1 {
  20   int a;
  21   int b;
  22 };
  23 NODEBUG S1 global_struct = { 2, 3 };
  24 // YESINFO-DAG: !DICompositeType({{.*}} name: "S1"
  25 // NOINFO-NOT:  !DICompositeType({{.*}} name: "S1"
  26 // YESINFO-DAG: !DIGlobalVariable(name: "global_struct"
  27 // NOINFO-NOT:  !DIGlobalVariable(name: "global_struct"
  28
  29 // Static data members. Const member needs a use.
  30 // Also the class as a whole needs a use, so that we produce debug info for
  31 // the entire class (iterating over the members, demonstrably skipping those
  32 // with 'nodebug').
  33 struct S2 {
  34   NODEBUG static int static_member;
  35   NODEBUG static const int static_const_member = 4;
  36 };
  37 int S2::static_member = 5;
  38 void func3() {
  39   S2 junk;
  40   func1(S2::static_const_member);
  41 }
  42 // YESINFO-DAG: !DIGlobalVariable(name: "static_member"
  43 // NOINFO-NOT:  !DIGlobalVariable(name: "static_member"
  44 // YESINFO-DAG: !DIDerivedType({{.*}} name: "static_const_member"
  45 // NOINFO-NOT:  !DIDerivedType({{.*}} name: "static_const_member"
  46
  47 // Function-local static and auto variables.
  48 void func4() {
  49   NODEBUG static int static_local = 6;
  50   NODEBUG        int normal_local = 7;
  51 }
  52 // YESINFO-DAG: !DIGlobalVariable(name: "static_local"
  53 // NOINFO-NOT:  !DIGlobalVariable(name: "static_local"
  54 // YESINFO-DAG: !DILocalVariable(name: "normal_local"
  55 // NOINFO-NOT:  !DILocalVariable(name: "normal_local"
  56
  57 template <typename T>
  58 using y NODEBUG = int;
  59 void func5() {
  60   NODEBUG typedef int x;
  61   x a;
  62   y<int> b;
  63 }
  64 // YESINFO-DAG: !DIDerivedType(tag: DW_TAG_typedef, name: "x"
  65 // NOINFO-NOT:  !DIDerivedType(tag: DW_TAG_typedef, name: "x"
  66 // YESINFO-DAG: !DIDerivedType(tag: DW_TAG_typedef, name: "y<int>"
  67 // NOINFO-NOT:  !DIDerivedType(tag: DW_TAG_typedef, name: "y<int>"