diff options
Diffstat (limited to 'include/llvm/Support/Debug.h')
| -rw-r--r-- | include/llvm/Support/Debug.h | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/include/llvm/Support/Debug.h b/include/llvm/Support/Debug.h index 69544de911..17dca21609 100644 --- a/include/llvm/Support/Debug.h +++ b/include/llvm/Support/Debug.h @@ -42,24 +42,36 @@ extern bool DebugFlag; // bool isCurrentDebugType(const char *Type); +// DEBUG_WITH_TYPE macro - This macro should be used by passes to emit debug +// information. In the '-debug' option is specified on the commandline, and if +// this is a debug build, then the code specified as the option to the macro +// will be executed. Otherwise it will not be. Example: +// +// DEBUG_WITH_TYPE("bitset", errs() << "Bitset contains: " << Bitset << "\n"); +// +// This will emit the debug information if -debug is present, and -debug-only is +// not specified, or is specified as "bitset". + +#ifdef NDEBUG +#define DEBUG_WITH_TYPE(TYPE, X) do { } while (0) +#else +#define DEBUG_WITH_TYPE(TYPE, X) \ + do { if (DebugFlag && isCurrentDebugType(TYPE)) { X; } } while (0) +#endif + // DEBUG macro - This macro should be used by passes to emit debug information. // In the '-debug' option is specified on the commandline, and if this is a // debug build, then the code specified as the option to the macro will be // executed. Otherwise it will not be. Example: // -// DEBUG(cerr << "Bitset contains: " << Bitset << "\n"); +// DEBUG(errs() << "Bitset contains: " << Bitset << "\n"); // #ifndef DEBUG_TYPE #define DEBUG_TYPE "" #endif -#ifdef NDEBUG -#define DEBUG(X) -#else -#define DEBUG(X) \ - do { if (DebugFlag && isCurrentDebugType(DEBUG_TYPE)) { X; } } while (0) -#endif +#define DEBUG(X) DEBUG_WITH_TYPE(DEBUG_TYPE, X) /// getNullOutputStream - Return a null string that does not output /// anything. This hides the static variable from other modules. |