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https://github.com/c64scene-ar/llvm-6502.git
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discussion of this change. Boy are my fingers tired. ;-) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45411 91177308-0d34-0410-b5e6-96231b3b80d8
157 lines
5.1 KiB
C++
157 lines
5.1 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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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(NULL)
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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 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() {}
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~RegisterPassParser() { RegistryClass::setListener(NULL); }
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void initialize(cl::Option &O) {
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cl::parser<typename RegistryClass::FunctionPassCtor>::initialize(O);
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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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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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virtual void NotifyAdd(const char *N,
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MachinePassCtor C,
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const char *D) {
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this->addLiteralOption(N, (typename RegistryClass::FunctionPassCtor)C, D);
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}
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virtual void NotifyRemove(const char *N) {
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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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