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