mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-12-24 20:44:51 +00:00
280 lines
11 KiB
C++
280 lines
11 KiB
C++
//===- llvm/PassSupport.h - Pass Support code -------------------*- C++ -*-===//
|
|
//
|
|
// This file defines stuff that is used to define and "use" Passes. This file
|
|
// is automatically #included by Pass.h, so:
|
|
//
|
|
// NO .CPP FILES SHOULD INCLUDE THIS FILE DIRECTLY
|
|
//
|
|
// Instead, #include Pass.h.
|
|
//
|
|
// This file defines Pass registration code and classes used for it.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_PASS_SUPPORT_H
|
|
#define LLVM_PASS_SUPPORT_H
|
|
|
|
// No need to include Pass.h, we are being included by it!
|
|
|
|
#include <typeinfo>
|
|
class TargetData;
|
|
class TargetMachine;
|
|
|
|
//===---------------------------------------------------------------------------
|
|
// 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 {
|
|
const char *PassName; // Nice name for Pass
|
|
const char *PassArgument; // Command Line argument to run this pass
|
|
const std::type_info &TypeInfo; // type_info object for this Pass class
|
|
unsigned char PassType; // Set of enums values below...
|
|
|
|
Pass *(*NormalCtor)(); // No argument ctor
|
|
Pass *(*DataCtor)(const TargetData&);// Ctor taking TargetData object...
|
|
|
|
public:
|
|
// PassType - Define symbolic constants that can be used to test to see if
|
|
// this pass should be listed by analyze or opt. Passes can use none, one or
|
|
// many of these flags or'd together.
|
|
//
|
|
enum {
|
|
Analysis = 1, Optimization = 2, LLC = 4
|
|
};
|
|
|
|
// PassInfo ctor - Do not call this directly, this should only be invoked
|
|
// through RegisterPass.
|
|
PassInfo(const char *name, const char *arg, const std::type_info &ti,
|
|
unsigned pt, Pass *(*normal)(), Pass *(*data)(const TargetData &))
|
|
: PassName(name), PassArgument(arg), TypeInfo(ti), PassType(pt),
|
|
NormalCtor(normal), DataCtor(data) {
|
|
}
|
|
|
|
// 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 type_info object for the pass...
|
|
const std::type_info &getTypeInfo() const { return TypeInfo; }
|
|
|
|
// getPassType - Return the PassType of a pass. Note that this can be several
|
|
// different types or'd together. This is _strictly_ for use by opt, analyze
|
|
// and llc for deciding which passes to use as command line options.
|
|
//
|
|
unsigned getPassType() const { return PassType; }
|
|
|
|
// 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.
|
|
|
|
Pass *(*getNormalCtor() const)() {
|
|
return NormalCtor;
|
|
}
|
|
|
|
// createPass() - Use this
|
|
Pass *createPass() const {
|
|
assert(NormalCtor &&
|
|
"Cannot call createPass on PassInfo without default ctor!");
|
|
return NormalCtor();
|
|
}
|
|
|
|
// getDataCtor - Return a pointer to a function that creates an instance of
|
|
// the pass and returns it. This returns a constructor for a version of the
|
|
// pass that takes a TArgetData object as a parameter.
|
|
//
|
|
Pass *(*getDataCtor() const)(const TargetData &) {
|
|
return DataCtor;
|
|
}
|
|
};
|
|
|
|
|
|
//===---------------------------------------------------------------------------
|
|
// 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 database
|
|
// maintained by the PassManager. Unless this template is used, opt, for
|
|
// example will not be able to see the pass and attempts to create the pass will
|
|
// fail. This template is used in the follow manner (at global scope, in your
|
|
// .cpp file):
|
|
//
|
|
// static RegisterPass<YourPassClassName> tmp("passopt", "My Pass Name");
|
|
//
|
|
// This statement will cause your pass to be created by calling the default
|
|
// constructor exposed by the pass. If you have a different constructor that
|
|
// must be called, create a global constructor function (which takes the
|
|
// arguments you need and returns a Pass*) and register your pass like this:
|
|
//
|
|
// Pass *createMyPass(foo &opt) { return new MyPass(opt); }
|
|
// static RegisterPass<PassClassName> tmp("passopt", "My Name", createMyPass);
|
|
//
|
|
struct RegisterPassBase {
|
|
// getPassInfo - Get the pass info for the registered class...
|
|
const PassInfo *getPassInfo() const { return PIObj; }
|
|
|
|
~RegisterPassBase(); // Intentionally non-virtual...
|
|
|
|
inline operator PassInfo* () const { return PIObj; }
|
|
|
|
protected:
|
|
PassInfo *PIObj; // The PassInfo object for this pass
|
|
void registerPass(PassInfo *);
|
|
};
|
|
|
|
template<typename PassName>
|
|
Pass *callDefaultCtor() { return new PassName(); }
|
|
|
|
template<typename PassName>
|
|
struct RegisterPass : public RegisterPassBase {
|
|
|
|
// Register Pass using default constructor...
|
|
RegisterPass(const char *PassArg, const char *Name, unsigned PassTy = 0) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName), PassTy,
|
|
callDefaultCtor<PassName>, 0));
|
|
}
|
|
|
|
// Register Pass using default constructor explicitly...
|
|
RegisterPass(const char *PassArg, const char *Name, unsigned PassTy,
|
|
Pass *(*ctor)()) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName), PassTy, ctor,0));
|
|
}
|
|
|
|
// Register Pass using TargetData constructor...
|
|
RegisterPass(const char *PassArg, const char *Name, unsigned PassTy,
|
|
Pass *(*datactor)(const TargetData &)) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName), PassTy,
|
|
0, datactor));
|
|
}
|
|
|
|
// Generic constructor version that has an unknown ctor type...
|
|
template<typename CtorType>
|
|
RegisterPass(const char *PassArg, const char *Name, unsigned PassTy,
|
|
CtorType *Fn) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName), PassTy, 0, 0));
|
|
}
|
|
};
|
|
|
|
// RegisterOpt - Register something that is to show up in Opt, this is just a
|
|
// shortcut for specifying RegisterPass...
|
|
//
|
|
template<typename PassName>
|
|
struct RegisterOpt : public RegisterPassBase {
|
|
RegisterOpt(const char *PassArg, const char *Name) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName),
|
|
PassInfo::Optimization,
|
|
callDefaultCtor<PassName>, 0));
|
|
}
|
|
|
|
// Register Pass using default constructor explicitly...
|
|
RegisterOpt(const char *PassArg, const char *Name, Pass *(*ctor)()) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName),
|
|
PassInfo::Optimization, ctor, 0));
|
|
}
|
|
|
|
// Register Pass using TargetData constructor...
|
|
RegisterOpt(const char *PassArg, const char *Name,
|
|
Pass *(*datactor)(const TargetData &)) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName),
|
|
PassInfo::Optimization, 0, datactor));
|
|
}
|
|
};
|
|
|
|
// RegisterAnalysis - Register something that is to show up in Analysis, this is
|
|
// just a shortcut for specifying RegisterPass...
|
|
//
|
|
template<typename PassName>
|
|
struct RegisterAnalysis : public RegisterPassBase {
|
|
RegisterAnalysis(const char *PassArg, const char *Name) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName),
|
|
PassInfo::Analysis,
|
|
callDefaultCtor<PassName>, 0));
|
|
}
|
|
|
|
// Register Pass using default constructor explicitly...
|
|
RegisterAnalysis(const char *PassArg, const char *Name, Pass *(*ctor)()) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName),
|
|
PassInfo::Analys, ctor, 0));
|
|
}
|
|
|
|
// Register Pass using TargetData constructor...
|
|
RegisterAnalysis(const char *PassArg, const char *Name,
|
|
Pass *(*datactor)(const TargetData &)) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName),
|
|
PassInfo::Analysis, 0, datactor));
|
|
}
|
|
};
|
|
|
|
// RegisterLLC - Register something that is to show up in LLC, this is just a
|
|
// shortcut for specifying RegisterPass...
|
|
//
|
|
template<typename PassName>
|
|
struct RegisterLLC : public RegisterPassBase {
|
|
RegisterLLC(const char *PassArg, const char *Name) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName),
|
|
PassInfo::LLC,
|
|
callDefaultCtor<PassName>, 0));
|
|
}
|
|
|
|
// Register Pass using default constructor explicitly...
|
|
RegisterLLC(const char *PassArg, const char *Name, Pass *(*ctor)()) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName),
|
|
PassInfo::LLC, ctor, 0));
|
|
}
|
|
|
|
// Register Pass using TargetData constructor...
|
|
RegisterLLC(const char *PassArg, const char *Name,
|
|
Pass *(*datactor)(const TargetData &)) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName),
|
|
PassInfo::LLC, 0, datactor));
|
|
}
|
|
|
|
// Register Pass using TargetMachine constructor...
|
|
RegisterLLC(const char *PassArg, const char *Name,
|
|
Pass *(*datactor)(TargetMachine &)) {
|
|
registerPass(new PassInfo(Name, PassArg, typeid(PassName),
|
|
PassInfo::LLC, 0, 0));
|
|
}
|
|
};
|
|
|
|
|
|
//===---------------------------------------------------------------------------
|
|
// 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.
|
|
//
|
|
struct PassRegistrationListener {
|
|
|
|
// PassRegistrationListener ctor - Add the current object to the list of
|
|
// PassRegistrationListeners...
|
|
PassRegistrationListener();
|
|
|
|
// dtor - Remove object from list of listeners...
|
|
virtual ~PassRegistrationListener();
|
|
|
|
// Callback functions - These functions are invoked whenever a pass is loaded
|
|
// or removed from the current executable.
|
|
//
|
|
virtual void passRegistered(const PassInfo *P) {}
|
|
virtual void passUnregistered(const PassInfo *P) {}
|
|
|
|
// enumeratePasses - Iterate over the registered passes, calling the
|
|
// passEnumerate callback on each PassInfo object.
|
|
//
|
|
void enumeratePasses();
|
|
|
|
// passEnumerate - Callback function invoked when someone calls
|
|
// enumeratePasses on this PassRegistrationListener object.
|
|
//
|
|
virtual void passEnumerate(const PassInfo *P) {}
|
|
};
|
|
|
|
#endif
|