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add a new 'SetCurrentDebugType' API (requested by Andrew Haley for JIT

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stuff) to programmatically control the current debug flavor.  While 
I'm at it, doxygenate Debug.h and clean it up.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85395 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-10-28 15:32:19 +00:00
parent 1507cd03a6
commit 70197a3a04
2 changed files with 46 additions and 32 deletions
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67
include/llvm/Support/Debug.h
View File

@ -28,39 +28,47 @@
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.
//
/// DEBUG_TYPE macro - Files can specify a DEBUG_TYPE as a string, which causes
/// all of their DEBUG statements to be activatable with -debug-only=thatstring.
#ifndef DEBUG_TYPE
#define DEBUG_TYPE ""
#endif
#ifndef NDEBUG
/// 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.
///
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
/// 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.
///
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
/// SetCurrentDebugType - Set the current debug type, as if the -debug-only=X
/// option were specified. Note that DebugFlag also needs to be set to true for
/// debug output to be produced.
///
void SetCurrentDebugType(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".
#define DEBUG_WITH_TYPE(TYPE, X) \
do { if (DebugFlag && isCurrentDebugType(TYPE)) { X; } } while (0)
#else
#define isCurrentDebugType(X) (false)
#define SetCurrentDebugType(X)
#define DEBUG_WITH_TYPE(TYPE, X) do { } while (0)
#endif
// DEBUG macro - This macro should be used by passes to emit debug information.
@ -70,11 +78,6 @@ bool isCurrentDebugType(const char *Type);
//
// DEBUG(errs() << "Bitset contains: " << Bitset << "\n");
//
#ifndef DEBUG_TYPE
#define DEBUG_TYPE ""
#endif
#define DEBUG(X) DEBUG_WITH_TYPE(DEBUG_TYPE, X)
} // End llvm namespace

11
lib/Support/Debug.cpp
View File

@ -57,7 +57,18 @@ DebugOnly("debug-only", cl::desc("Enable a specific type of debug output"),
bool llvm::isCurrentDebugType(const char *DebugType) {
return CurrentDebugType.empty() || DebugType == CurrentDebugType;
}
/// SetCurrentDebugType - Set the current debug type, as if the -debug-only=X
/// option were specified. Note that DebugFlag also needs to be set to true for
/// debug output to be produced.
///
void SetCurrentDebugType(const char *Type) {
CurrentDebugType = Type;
}
#else
// Avoid "has no symbols" warning.
namespace llvm {
int Debug_dummy = 0;
}
#endif