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//===- llvm/Support/PassNameParser.h ----------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file the PassNameParser and FilteredPassNameParser<> classes, which are
// used to add command line arguments to a utility for all of the passes that
// have been registered into the system.
//
// The PassNameParser class adds ALL passes linked into the system (that are
// creatable) as command line arguments to the tool (when instantiated with the
// appropriate command line option template). The FilteredPassNameParser<>
// template is used for the same purposes as PassNameParser, except that it only
// includes passes that have a PassType that are compatible with the filter
// (which is the template argument).
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_PASS_NAME_PARSER_H
#define LLVM_SUPPORT_PASS_NAME_PARSER_H
#include "llvm/Support/CommandLine.h"
#include "llvm/Pass.h"
#include <algorithm>
#include <iostream>
namespace llvm {
//===----------------------------------------------------------------------===//
// PassNameParser class - Make use of the pass registration mechanism to
// automatically add a command line argument to opt for each pass.
//
class PassNameParser : public PassRegistrationListener,
public cl::parser<const PassInfo*> {
cl::Option *Opt;
public:
PassNameParser() : Opt(0) {}
void initialize(cl::Option &O) {
Opt = &O;
cl::parser<const PassInfo*>::initialize(O);
// Add all of the passes to the map that got initialized before 'this' did.
enumeratePasses();
}
// ignorablePassImpl - Can be overriden in subclasses to refine the list of
// which passes we want to include.
//
virtual bool ignorablePassImpl(const PassInfo *P) const { return false; }
inline bool ignorablePass(const PassInfo *P) const {
// Ignore non-selectable and non-constructible passes! Ignore
// non-optimizations.
return P->getPassArgument() == 0 || *P->getPassArgument() == 0 ||
(P->getNormalCtor() == 0 && P->getTargetCtor() == 0) ||
ignorablePassImpl(P);
}
// Implement the PassRegistrationListener callbacks used to populate our map
//
virtual void passRegistered(const PassInfo *P) {
if (ignorablePass(P) || !Opt) return;
if (findOption(P->getPassArgument()) != getNumOptions()) {
std::cerr << "Two passes with the same argument (-"
<< P->getPassArgument() << ") attempted to be registered!\n";
abort();
}
addLiteralOption(P->getPassArgument(), P, P->getPassName());
Opt->addArgument(P->getPassArgument());
}
virtual void passEnumerate(const PassInfo *P) { passRegistered(P); }
virtual void passUnregistered(const PassInfo *P) {
if (ignorablePass(P) || !Opt) return;
assert(findOption(P->getPassArgument()) != getNumOptions() &&
"Registered Pass not in the pass map!");
removeLiteralOption(P->getPassArgument());
Opt->removeArgument(P->getPassArgument());
}
// ValLessThan - Provide a sorting comparator for Values elements...
typedef std::pair<const char*,
std::pair<const PassInfo*, const char*> > ValType;
static bool ValLessThan(const ValType &VT1, const ValType &VT2) {
return std::string(VT1.first) < std::string(VT2.first);
}
// printOptionInfo - Print out information about this option. Override the
// default implementation to sort the table before we print...
virtual void printOptionInfo(const cl::Option &O, unsigned GlobalWidth) const{
PassNameParser *PNP = const_cast<PassNameParser*>(this);
std::sort(PNP->Values.begin(), PNP->Values.end(), ValLessThan);
cl::parser<const PassInfo*>::printOptionInfo(O, GlobalWidth);
}
};
//===----------------------------------------------------------------------===//
// FilteredPassNameParser class - Just like PassNameParser, but filter out
// passes that do not have a PassType that includes the flags specified as the
// template argument.
//
template<unsigned Flags>
struct FilteredPassNameParser : public PassNameParser {
// ignorablePassImpl - Can be overriden in subclasses to refine the list of
// which passes we want to include.
//
virtual bool ignorablePassImpl(const PassInfo *P) const {
return (P->getPassType() & Flags) == 0;
}
};
} // End llvm namespace
#endif
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