mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 19:52:54 +01:00
55 lines
2.1 KiB
C++
55 lines
2.1 KiB
C++
//===- Target/TargetJITInfo.h - Target Information for JIT ------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file exposes an abstract interface used by the Just-In-Time code
|
|
// generator to perform target-specific activities, such as emitting stubs. If
|
|
// a TargetMachine supports JIT code generation, it should provide one of these
|
|
// objects through the getJITInfo() method.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_TARGET_TARGETJITINFO_H
|
|
#define LLVM_TARGET_TARGETJITINFO_H
|
|
|
|
namespace llvm {
|
|
class Function;
|
|
class FunctionPassManager;
|
|
class MachineCodeEmitter;
|
|
|
|
/// TargetJITInfo - Target specific information required by the Just-In-Time
|
|
/// code generator.
|
|
struct TargetJITInfo {
|
|
virtual ~TargetJITInfo() {}
|
|
|
|
/// addPassesToJITCompile - Add passes to the specified pass manager to
|
|
/// implement a fast code generator for this target.
|
|
///
|
|
virtual void addPassesToJITCompile(FunctionPassManager &PM) = 0;
|
|
|
|
/// replaceMachineCodeForFunction - Make it so that calling the function
|
|
/// whose machine code is at OLD turns into a call to NEW, perhaps by
|
|
/// overwriting OLD with a branch to NEW. This is used for self-modifying
|
|
/// code.
|
|
///
|
|
virtual void replaceMachineCodeForFunction (void *Old, void *New) = 0;
|
|
|
|
/// getJITStubForFunction - Create or return a stub for the specified
|
|
/// function. This stub acts just like the specified function, except that
|
|
/// it allows the "address" of the function to be taken without having to
|
|
/// generate code for it. Targets do not need to implement this method, but
|
|
/// doing so will allow for faster startup of the JIT.
|
|
///
|
|
virtual void *getJITStubForFunction(Function *F, MachineCodeEmitter &MCE) {
|
|
return 0;
|
|
}
|
|
};
|
|
} // End llvm namespace
|
|
|
|
#endif
|