//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_PASS_SUPPORT_H
-#define LLVM_PASS_SUPPORT_H
+#ifndef LLVM_PASSSUPPORT_H
+#define LLVM_PASSSUPPORT_H
#include "Pass.h"
-#include "llvm/PassRegistry.h"
#include "llvm/InitializePasses.h"
+#include "llvm/PassInfo.h"
+#include "llvm/PassRegistry.h"
+#include "llvm/Support/Atomic.h"
#include "llvm/Support/Compiler.h"
#include <vector>
namespace llvm {
-//===---------------------------------------------------------------------------
-/// PassInfo class - An instance of this class exists for every pass known by
-/// the system, and can be obtained from a live Pass by calling its
-/// getPassInfo() method. These objects are set up by the RegisterPass<>
-/// template, defined below.
-///
-class PassInfo {
-public:
- typedef Pass* (*NormalCtor_t)();
-
-private:
- const char *const PassName; // Nice name for Pass
- const char *const PassArgument; // Command Line argument to run this pass
- const void *PassID;
- const bool IsCFGOnlyPass; // Pass only looks at the CFG.
- const bool IsAnalysis; // True if an analysis pass.
- const bool IsAnalysisGroup; // True if an analysis group.
- std::vector<const PassInfo*> ItfImpl;// Interfaces implemented by this pass
-
- NormalCtor_t NormalCtor;
-
-public:
- /// PassInfo ctor - Do not call this directly, this should only be invoked
- /// through RegisterPass.
- PassInfo(const char *name, const char *arg, const void *pi,
- NormalCtor_t normal, bool isCFGOnly, bool is_analysis)
- : PassName(name), PassArgument(arg), PassID(pi),
- IsCFGOnlyPass(isCFGOnly),
- IsAnalysis(is_analysis), IsAnalysisGroup(false), NormalCtor(normal) { }
- /// PassInfo ctor - Do not call this directly, this should only be invoked
- /// through RegisterPass. This version is for use by analysis groups; it
- /// does not auto-register the pass.
- PassInfo(const char *name, const void *pi)
- : PassName(name), PassArgument(""), PassID(pi),
- IsCFGOnlyPass(false),
- IsAnalysis(false), IsAnalysisGroup(true), NormalCtor(0) { }
-
- /// getPassName - Return the friendly name for the pass, never returns null
- ///
- const char *getPassName() const { return PassName; }
-
- /// getPassArgument - Return the command line option that may be passed to
- /// 'opt' that will cause this pass to be run. This will return null if there
- /// is no argument.
- ///
- const char *getPassArgument() const { return PassArgument; }
-
- /// getTypeInfo - Return the id object for the pass...
- /// TODO : Rename
- const void *getTypeInfo() const { return PassID; }
-
- /// Return true if this PassID implements the specified ID pointer.
- bool isPassID(const void *IDPtr) const {
- return PassID == IDPtr;
- }
-
- /// isAnalysisGroup - Return true if this is an analysis group, not a normal
- /// pass.
- ///
- bool isAnalysisGroup() const { return IsAnalysisGroup; }
- bool isAnalysis() const { return IsAnalysis; }
-
- /// isCFGOnlyPass - return true if this pass only looks at the CFG for the
- /// function.
- bool isCFGOnlyPass() const { return IsCFGOnlyPass; }
-
- /// getNormalCtor - Return a pointer to a function, that when called, creates
- /// an instance of the pass and returns it. This pointer may be null if there
- /// is no default constructor for the pass.
- ///
- NormalCtor_t getNormalCtor() const {
- return NormalCtor;
- }
- void setNormalCtor(NormalCtor_t Ctor) {
- NormalCtor = Ctor;
- }
-
- /// createPass() - Use this method to create an instance of this pass.
- Pass *createPass() const;
-
- /// addInterfaceImplemented - This method is called when this pass is
- /// registered as a member of an analysis group with the RegisterAnalysisGroup
- /// template.
- ///
- void addInterfaceImplemented(const PassInfo *ItfPI) {
- ItfImpl.push_back(ItfPI);
- }
-
- /// getInterfacesImplemented - Return a list of all of the analysis group
- /// interfaces implemented by this pass.
- ///
- const std::vector<const PassInfo*> &getInterfacesImplemented() const {
- return ItfImpl;
- }
-
-private:
- void operator=(const PassInfo &); // do not implement
- PassInfo(const PassInfo &); // do not implement
-};
+class TargetMachine;
+
+#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(); \
+ TsanIgnoreWritesBegin(); \
+ TsanHappensBefore(&initialized); \
+ initialized = 2; \
+ TsanIgnoreWritesEnd(); \
+ } else { \
+ sys::cas_flag tmp = initialized; \
+ sys::MemoryFence(); \
+ while (tmp != 2) { \
+ tmp = initialized; \
+ sys::MemoryFence(); \
+ } \
+ } \
+ TsanHappensAfter(&initialized);
#define INITIALIZE_PASS(passName, arg, name, cfg, analysis) \
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; \
} \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
- ATTRIBUTE_USED \
- static void* initialized = initialize##passName##PassOnce(Registry); \
- } \
- static RegisterPass<passName> passName ## _info(arg, name, cfg, analysis);
+ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
+ }
#define INITIALIZE_PASS_BEGIN(passName, arg, name, cfg, analysis) \
static void* initialize##passName##PassOnce(PassRegistry &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; \
} \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
- ATTRIBUTE_USED \
- static void* initialized = initialize##passName##PassOnce(Registry); \
- } \
- static RegisterPass<passName> passName ## _info(arg, name, cfg, analysis);
+ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
+ }
+
+#define INITIALIZE_PASS_WITH_OPTIONS(PassName, Arg, Name, Cfg, Analysis) \
+ INITIALIZE_PASS_BEGIN(PassName, Arg, Name, Cfg, Analysis) \
+ PassName::registerOptions(); \
+ INITIALIZE_PASS_END(PassName, Arg, Name, Cfg, Analysis)
+
+#define INITIALIZE_PASS_WITH_OPTIONS_BEGIN(PassName, Arg, Name, Cfg, Analysis) \
+ INITIALIZE_PASS_BEGIN(PassName, Arg, Name, Cfg, Analysis) \
+ PassName::registerOptions(); \
template<typename PassName>
Pass *callDefaultCtor() { return new PassName(); }
+template <typename PassName> Pass *callTargetMachineCtor(TargetMachine *TM) {
+ return new PassName(TM);
+}
+
//===---------------------------------------------------------------------------
/// RegisterPass<t> template - This template class is used to notify the system
/// that a Pass is available for use, and registers it into the internal
public:
RegisterAGBase(const char *Name,
const void *InterfaceID,
- const void *PassID = 0,
+ const void *PassID = nullptr,
bool isDefault = false);
};
}
};
-#define INITIALIZE_ANALYSIS_GROUP(agName, name) \
+#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; \
} \
void llvm::initialize##agName##AnalysisGroup(PassRegistry &Registry) { \
- ATTRIBUTE_USED static void* initialized = \
- initialize##agName##AnalysisGroupOnce(Registry); \
- } \
- static RegisterAnalysisGroup<agName> agName##_info (name);
+ CALL_ONCE_INITIALIZATION(initialize##agName##AnalysisGroupOnce) \
+ }
+
#define INITIALIZE_AG_PASS(passName, agName, arg, name, cfg, analysis, def) \
static void* initialize##passName##PassOnce(PassRegistry &Registry) { \
- initialize##agName##AnalysisGroup(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; \
} \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
- ATTRIBUTE_USED \
- static void* initialized = initialize##passName##PassOnce(Registry); \
- } \
- static RegisterPass<passName> passName ## _info(arg, name, cfg, analysis); \
- static RegisterAnalysisGroup<agName, def> passName ## _ag(passName ## _info);
+ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
+ }
+
#define INITIALIZE_AG_PASS_BEGIN(passName, agName, arg, n, cfg, analysis, def) \
static void* initialize##passName##PassOnce(PassRegistry &Registry) { \
- initialize##agName##AnalysisGroup(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; \
} \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
- ATTRIBUTE_USED \
- static void* initialized = initialize##passName##PassOnce(Registry); \
- } \
- static RegisterPass<passName> passName ## _info(arg, n, cfg, analysis); \
- static RegisterAnalysisGroup<agName, def> passName ## _ag(passName ## _info);
+ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
+ }
//===---------------------------------------------------------------------------
/// PassRegistrationListener class - This class is meant to be derived from by
/// clients that are interested in which passes get registered and unregistered
/// at runtime (which can be because of the RegisterPass constructors being run
/// as the program starts up, or may be because a shared object just got
-/// loaded). Deriving from the PassRegistationListener class automatically
-/// registers your object to receive callbacks indicating when passes are loaded
-/// and removed.
+/// loaded).
///
struct PassRegistrationListener {
- /// PassRegistrationListener ctor - Add the current object to the list of
- /// PassRegistrationListeners...
- PassRegistrationListener();
-
- /// dtor - Remove object from list of listeners...
- ///
- virtual ~PassRegistrationListener();
+ PassRegistrationListener() {}
+ virtual ~PassRegistrationListener() {}
/// Callback functions - These functions are invoked whenever a pass is loaded
/// or removed from the current executable.
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