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03f4bc5d6c
from. - This commit is almost entirely propogating the reference through the TargetMachine subclasses' constructor calls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75778 91177308-0d34-0410-b5e6-96231b3b80d8
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
//===-- Target/TargetMachineRegistry.h - Target Registration ----*- 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 exposes two classes: the TargetMachineRegistry class, which allows
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// tools to inspect all of registered targets, and the RegisterTarget class,
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// which TargetMachine implementations should use to register themselves with
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// the system.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TARGET_TARGETMACHINEREGISTRY_H
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#define LLVM_TARGET_TARGETMACHINEREGISTRY_H
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#include "llvm/Module.h"
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#include "llvm/Support/Registry.h"
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#include "llvm/Target/TargetRegistry.h"
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namespace llvm {
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class Module;
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class Target;
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class TargetMachine;
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struct TargetMachineRegistryEntry {
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const Target &TheTarget;
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const char *Name;
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const char *ShortDesc;
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public:
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TargetMachineRegistryEntry(const Target &T, const char *N, const char *SD)
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: TheTarget(T), Name(N), ShortDesc(SD) {}
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};
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template<>
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class RegistryTraits<TargetMachine> {
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public:
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typedef TargetMachineRegistryEntry entry;
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static const char *nameof(const entry &Entry) { return Entry.Name; }
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static const char *descof(const entry &Entry) { return Entry.ShortDesc; }
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};
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struct TargetMachineRegistry : public Registry<TargetMachine> {
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};
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//===--------------------------------------------------------------------===//
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/// RegisterTarget - This class is used to make targets automatically register
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/// themselves with the tools they are linked with. Targets should define an
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/// single global Target instance and register it using the TargetRegistry
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/// interfaces. Targets must also include a static instance of this class.
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///
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/// The type 'TargetMachineImpl' should provide a constructor with two
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/// parameters:
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/// - const Module& M: the module that is being compiled:
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/// - const std::string& FS: target-specific string describing target
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/// flavour.
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template<class TargetMachineImpl>
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struct RegisterTarget {
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RegisterTarget(Target &T, const char *Name, const char *ShortDesc)
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: Entry(T, Name, ShortDesc),
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Node(Entry) {
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TargetRegistry::RegisterTargetMachine(T, &Allocator);
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}
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private:
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TargetMachineRegistry::entry Entry;
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TargetMachineRegistry::node Node;
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static TargetMachine *Allocator(const Target &T, const Module &M,
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const std::string &FS) {
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return new TargetMachineImpl(T, M, FS);
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}
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};
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}
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#endif
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