#include "Pass.h"
#include "llvm/PassRegistry.h"
#include "llvm/InitializePasses.h"
+#include "llvm/System/Atomic.h"
#include <vector>
namespace llvm {
PassInfo(const PassInfo &); // do not implement
};
+#define CALL_ONCE_INITIALIZATION(function) \
+ static volatile sys::cas_flag initialized = 0; \
+ sys::cas_flag old_val = sys::CompareAndSwap(&initialized, 1, 0); \
+ if (old_val == 0) { \
+ function(Registry); \
+ sys::MemoryFence(); \
+ initialized = 2; \
+ } else { \
+ sys::cas_flag tmp = initialized; \
+ sys::MemoryFence(); \
+ while (tmp != 2) { \
+ tmp = initialized; \
+ sys::MemoryFence(); \
+ } \
+ }
+
#define INITIALIZE_PASS(passName, arg, name, cfg, analysis) \
- void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
- static bool initialized = false; \
- if (initialized) return; \
- initialized = true; \
+ static void* initialize##passName##PassOnce(PassRegistry &Registry) { \
PassInfo *PI = new PassInfo(name, arg, & passName ::ID, \
PassInfo::NormalCtor_t(callDefaultCtor< passName >), cfg, analysis); \
- Registry.registerPass(*PI); \
+ Registry.registerPass(*PI, true); \
+ return PI; \
} \
- static RegisterPass<passName> passName ## _info(arg, name, cfg, analysis);
+ void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
+ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
+ }
#define INITIALIZE_PASS_BEGIN(passName, arg, name, cfg, analysis) \
- void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
- static bool initialized = false; \
- if (initialized) return; \
- initialized = true;
+ static void* initialize##passName##PassOnce(PassRegistry &Registry) {
#define INITIALIZE_PASS_DEPENDENCY(depName) \
initialize##depName##Pass(Registry);
#define INITIALIZE_PASS_END(passName, arg, name, cfg, analysis) \
PassInfo *PI = new PassInfo(name, arg, & passName ::ID, \
PassInfo::NormalCtor_t(callDefaultCtor< passName >), cfg, analysis); \
- Registry.registerPass(*PI); \
+ Registry.registerPass(*PI, true); \
+ return PI; \
} \
- static RegisterPass<passName> passName ## _info(arg, name, cfg, analysis);
+ void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
+ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
+ }
template<typename PassName>
Pass *callDefaultCtor() { return new PassName(); }
}
};
-#define INITIALIZE_ANALYSIS_GROUP(agName, name) \
- void llvm::initialize##agName##AnalysisGroup(PassRegistry &Registry) { \
+#define INITIALIZE_ANALYSIS_GROUP(agName, name, defaultPass) \
+ static void* initialize##agName##AnalysisGroupOnce(PassRegistry &Registry) { \
+ initialize##defaultPass##Pass(Registry); \
PassInfo *AI = new PassInfo(name, & agName :: ID); \
- Registry.registerAnalysisGroup(& agName ::ID, 0, *AI, false); \
+ Registry.registerAnalysisGroup(& agName ::ID, 0, *AI, false, true); \
+ return AI; \
} \
- static RegisterAnalysisGroup<agName> agName##_info (name);
+ void llvm::initialize##agName##AnalysisGroup(PassRegistry &Registry) { \
+ CALL_ONCE_INITIALIZATION(initialize##agName##AnalysisGroupOnce) \
+ }
+
#define INITIALIZE_AG_PASS(passName, agName, arg, name, cfg, analysis, def) \
- void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
- initialize##agName##AnalysisGroup(Registry); \
+ static void* initialize##passName##PassOnce(PassRegistry &Registry) { \
+ if (!def) initialize##agName##AnalysisGroup(Registry); \
PassInfo *PI = new PassInfo(name, arg, & passName ::ID, \
PassInfo::NormalCtor_t(callDefaultCtor< passName >), cfg, analysis); \
- Registry.registerPass(*PI); \
+ Registry.registerPass(*PI, true); \
\
PassInfo *AI = new PassInfo(name, & agName :: ID); \
- Registry.registerAnalysisGroup(& agName ::ID, & passName ::ID, *AI, def); \
+ Registry.registerAnalysisGroup(& agName ::ID, & passName ::ID, \
+ *AI, def, true); \
+ return AI; \
} \
- static RegisterPass<passName> passName ## _info(arg, name, cfg, analysis); \
- static RegisterAnalysisGroup<agName, def> passName ## _ag(passName ## _info);
+ void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
+ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
+ }
+
#define INITIALIZE_AG_PASS_BEGIN(passName, agName, arg, n, cfg, analysis, def) \
- void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
- initialize##agName##AnalysisGroup(Registry);
+ static void* initialize##passName##PassOnce(PassRegistry &Registry) { \
+ if (!def) initialize##agName##AnalysisGroup(Registry);
#define INITIALIZE_AG_PASS_END(passName, agName, arg, n, cfg, analysis, def) \
PassInfo *PI = new PassInfo(n, arg, & passName ::ID, \
PassInfo::NormalCtor_t(callDefaultCtor< passName >), cfg, analysis); \
- Registry.registerPass(*PI); \
+ Registry.registerPass(*PI, true); \
\
PassInfo *AI = new PassInfo(n, & agName :: ID); \
- Registry.registerAnalysisGroup(& agName ::ID, & passName ::ID, *AI, def); \
+ Registry.registerAnalysisGroup(& agName ::ID, & passName ::ID, \
+ *AI, def, true); \
+ return AI; \
} \
- static RegisterPass<passName> passName ## _info(arg, n, cfg, analysis); \
- static RegisterAnalysisGroup<agName, def> passName ## _ag(passName ## _info);
+ void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
+ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
+ }
//===---------------------------------------------------------------------------
/// PassRegistrationListener class - This class is meant to be derived from by