diff options
Diffstat (limited to 'include/llvm/Support/Debug.h')
| -rw-r--r-- | include/llvm/Support/Debug.h | 52 |
1 files changed, 28 insertions, 24 deletions
diff --git a/include/llvm/Support/Debug.h b/include/llvm/Support/Debug.h index 52d0d3f..6f82ea7 100644 --- a/include/llvm/Support/Debug.h +++ b/include/llvm/Support/Debug.h @@ -18,61 +18,65 @@ // can specify '-debug-only=foo' to enable JUST the debug information for the // foo class. // -// When compiling in release mode, the -debug-* options and all code in DEBUG() -// statements disappears, so it does not effect the runtime of the code. +// When compiling without assertions, the -debug-* options and all code in +// DEBUG() statements disappears, so it does not effect the runtime of the code. // //===----------------------------------------------------------------------===// #ifndef LLVM_SUPPORT_DEBUG_H #define LLVM_SUPPORT_DEBUG_H -#include "llvm/Support/Streams.h" - namespace llvm { // DebugFlag - This boolean is set to true if the '-debug' command line option // is specified. This should probably not be referenced directly, instead, use // the DEBUG macro below. // +#ifndef NDEBUG extern bool DebugFlag; +#endif // isCurrentDebugType - Return true if the specified string is the debug type // specified on the command line, or if none was specified on the command line // with the -debug-only=X option. // +#ifndef NDEBUG bool isCurrentDebugType(const char *Type); +#else +#define isCurrentDebugType(X) (false) +#endif + +// 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 - -/// getErrorOutputStream - Returns the error output stream (std::cerr). This -/// places the std::c* I/O streams into one .cpp file and relieves the whole -/// program from having to have hundreds of static c'tor/d'tors for them. -/// -OStream &getErrorOutputStream(const char *DebugType); - -#ifdef NDEBUG -#define DOUT llvm::OStream(0) -#else -#define DOUT llvm::getErrorOutputStream(DEBUG_TYPE) -#endif - +#define DEBUG(X) DEBUG_WITH_TYPE(DEBUG_TYPE, X) + } // End llvm namespace #endif |
