98 lines
3.7 KiB
C
98 lines
3.7 KiB
C
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//===- LegacyPassNameParser.h -----------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the PassNameParser and FilteredPassNameParser<> classes,
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// which are used to add command line arguments to a utility for all of the
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// passes that 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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// Note that this is part of the legacy pass manager infrastructure and will be
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// (eventually) going away.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_LEGACYPASSNAMEPARSER_H
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#define LLVM_IR_LEGACYPASSNAMEPARSER_H
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Pass.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstring>
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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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public:
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PassNameParser(cl::Option &O);
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~PassNameParser() override;
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void initialize() {
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cl::parser<const PassInfo*>::initialize();
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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().empty() || P->getNormalCtor() == nullptr ||
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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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void passRegistered(const PassInfo *P) override {
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if (ignorablePass(P)) return;
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if (findOption(P->getPassArgument().data()) != getNumOptions()) {
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errs() << "Two passes with the same argument (-"
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<< P->getPassArgument() << ") attempted to be registered!\n";
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llvm_unreachable(nullptr);
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}
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addLiteralOption(P->getPassArgument().data(), P, P->getPassName().data());
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}
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void passEnumerate(const PassInfo *P) override { passRegistered(P); }
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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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void printOptionInfo(const cl::Option &O, size_t GlobalWidth) const override {
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PassNameParser *PNP = const_cast<PassNameParser*>(this);
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array_pod_sort(PNP->Values.begin(), PNP->Values.end(), ValCompare);
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cl::parser<const PassInfo*>::printOptionInfo(O, GlobalWidth);
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}
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private:
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// ValCompare - Provide a sorting comparator for Values elements...
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static int ValCompare(const PassNameParser::OptionInfo *VT1,
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const PassNameParser::OptionInfo *VT2) {
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return VT1->Name.compare(VT2->Name);
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}
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};
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} // End llvm namespace
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#endif
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