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https://github.com/c64scene-ar/llvm-6502.git
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40a218658a
Summary: Some parsers need references back to the option they are members of. This is used for handling the argument string as well as by the various pass name parsers for making pass names into flags. Making parsers that need to refer back to the option have a reference to the option eliminates some of the members of various parsers, and enables further code cleanup. Reviewers: dexonsmith Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D7131 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226864 91177308-0d34-0410-b5e6-96231b3b80d8
158 lines
5.2 KiB
C++
158 lines
5.2 KiB
C++
//===-- llvm/CodeGen/MachinePassRegistry.h ----------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the mechanics for machine function pass registries. A
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// function pass registry (MachinePassRegistry) is auto filled by the static
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// constructors of MachinePassRegistryNode. Further there is a command line
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// parser (RegisterPassParser) which listens to each registry for additions
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// and deletions, so that the appropriate command option is updated.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_MACHINEPASSREGISTRY_H
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#define LLVM_CODEGEN_MACHINEPASSREGISTRY_H
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/Support/CommandLine.h"
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namespace llvm {
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typedef void *(*MachinePassCtor)();
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//===----------------------------------------------------------------------===//
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///
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/// MachinePassRegistryListener - Listener to adds and removals of nodes in
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/// registration list.
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///
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//===----------------------------------------------------------------------===//
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class MachinePassRegistryListener {
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virtual void anchor();
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public:
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MachinePassRegistryListener() {}
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virtual ~MachinePassRegistryListener() {}
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virtual void NotifyAdd(const char *N, MachinePassCtor C, const char *D) = 0;
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virtual void NotifyRemove(const char *N) = 0;
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};
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//===----------------------------------------------------------------------===//
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///
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/// MachinePassRegistryNode - Machine pass node stored in registration list.
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///
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//===----------------------------------------------------------------------===//
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class MachinePassRegistryNode {
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private:
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MachinePassRegistryNode *Next; // Next function pass in list.
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const char *Name; // Name of function pass.
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const char *Description; // Description string.
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MachinePassCtor Ctor; // Function pass creator.
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public:
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MachinePassRegistryNode(const char *N, const char *D, MachinePassCtor C)
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: Next(nullptr)
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, Name(N)
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, Description(D)
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, Ctor(C)
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{}
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// Accessors
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MachinePassRegistryNode *getNext() const { return Next; }
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MachinePassRegistryNode **getNextAddress() { return &Next; }
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const char *getName() const { return Name; }
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const char *getDescription() const { return Description; }
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MachinePassCtor getCtor() const { return Ctor; }
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void setNext(MachinePassRegistryNode *N) { Next = N; }
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};
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//===----------------------------------------------------------------------===//
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///
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/// MachinePassRegistry - Track the registration of machine passes.
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///
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//===----------------------------------------------------------------------===//
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class MachinePassRegistry {
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private:
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MachinePassRegistryNode *List; // List of registry nodes.
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MachinePassCtor Default; // Default function pass creator.
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MachinePassRegistryListener* Listener;// Listener for list adds are removes.
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public:
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// NO CONSTRUCTOR - we don't want static constructor ordering to mess
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// with the registry.
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// Accessors.
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//
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MachinePassRegistryNode *getList() { return List; }
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MachinePassCtor getDefault() { return Default; }
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void setDefault(MachinePassCtor C) { Default = C; }
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void setDefault(StringRef Name);
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void setListener(MachinePassRegistryListener *L) { Listener = L; }
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/// Add - Adds a function pass to the registration list.
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///
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void Add(MachinePassRegistryNode *Node);
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/// Remove - Removes a function pass from the registration list.
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///
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void Remove(MachinePassRegistryNode *Node);
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};
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//===----------------------------------------------------------------------===//
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///
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/// RegisterPassParser class - Handle the addition of new machine passes.
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///
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//===----------------------------------------------------------------------===//
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template<class RegistryClass>
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class RegisterPassParser : public MachinePassRegistryListener,
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public cl::parser<typename RegistryClass::FunctionPassCtor> {
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public:
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RegisterPassParser(cl::Option &O)
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: cl::parser<typename RegistryClass::FunctionPassCtor>(O) {}
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~RegisterPassParser() { RegistryClass::setListener(nullptr); }
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void initialize() {
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cl::parser<typename RegistryClass::FunctionPassCtor>::initialize();
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// Add existing passes to option.
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for (RegistryClass *Node = RegistryClass::getList();
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Node; Node = Node->getNext()) {
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this->addLiteralOption(Node->getName(),
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(typename RegistryClass::FunctionPassCtor)Node->getCtor(),
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Node->getDescription());
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}
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// Make sure we listen for list changes.
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RegistryClass::setListener(this);
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}
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// Implement the MachinePassRegistryListener callbacks.
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//
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void NotifyAdd(const char *N, MachinePassCtor C, const char *D) override {
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this->addLiteralOption(N, (typename RegistryClass::FunctionPassCtor)C, D);
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}
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void NotifyRemove(const char *N) override {
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this->removeLiteralOption(N);
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}
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};
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} // end namespace llvm
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#endif
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