X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=include%2Fllvm%2FPassSupport.h;h=449bc928108410e845694ce9887cb3b3d7c07674;hp=006fefa0b3520c9a577d02d169ba04abc0b85188;hb=96c909cc74e41dc26edcad3775b07fe317210821;hpb=2ab36d350293c77fc8941ce1023e4899df7e3a82 diff --git a/include/llvm/PassSupport.h b/include/llvm/PassSupport.h index 006fefa0b35..449bc928108 100644 --- a/include/llvm/PassSupport.h +++ b/include/llvm/PassSupport.h @@ -18,132 +18,54 @@ // //===----------------------------------------------------------------------===// -#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/Valgrind.h" #include 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 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 &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) \ - 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 ## _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); @@ -153,13 +75,20 @@ private: #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 ## _info(arg, name, cfg, analysis); + void llvm::initialize##passName##Pass(PassRegistry &Registry) { \ + CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \ + } template Pass *callDefaultCtor() { return new PassName(); } +template Pass *callTargetMachineCtor(TargetMachine *TM) { + return new PassName(TM); +} + //===--------------------------------------------------------------------------- /// RegisterPass template - This template class is used to notify the system /// that a Pass is available for use, and registers it into the internal @@ -214,7 +143,7 @@ class RegisterAGBase : public PassInfo { public: RegisterAGBase(const char *Name, const void *InterfaceID, - const void *PassID = 0, + const void *PassID = nullptr, bool isDefault = false); }; @@ -231,59 +160,64 @@ struct RegisterAnalysisGroup : public RegisterAGBase { } }; -#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##_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 ## _info(arg, name, cfg, analysis); \ - static RegisterAnalysisGroup 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 ## _info(arg, n, cfg, analysis); \ - static RegisterAnalysisGroup 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 /// 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.