1 //===- X86JITInfo.h - X86 implementation of the JIT interface --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the X86 implementation of the TargetJITInfo class.
12 //===----------------------------------------------------------------------===//
17 #include "llvm/Target/TargetJITInfo.h"
21 class IntrinsicLowering;
23 class X86JITInfo : public TargetJITInfo {
26 X86JITInfo(TargetMachine &tm) : TM(tm) {useGOT = 0;}
28 /// addPassesToJITCompile - Add passes to the specified pass manager to
29 /// implement a fast dynamic compiler for this target. Return true if this
30 /// is not supported for this target.
32 virtual void addPassesToJITCompile(FunctionPassManager &PM);
34 /// replaceMachineCodeForFunction - Make it so that calling the function
35 /// whose machine code is at OLD turns into a call to NEW, perhaps by
36 /// overwriting OLD with a branch to NEW. This is used for self-modifying
39 virtual void replaceMachineCodeForFunction(void *Old, void *New);
41 /// emitFunctionStub - Use the specified MachineCodeEmitter object to emit a
42 /// small native function that simply calls the function at the specified
44 virtual void *emitFunctionStub(void *Fn, MachineCodeEmitter &MCE);
46 /// getLazyResolverFunction - Expose the lazy resolver to the JIT.
47 virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
49 /// relocate - Before the JIT can run a block of code that has been emitted,
50 /// it must rewrite the code to contain the actual addresses of any
51 /// referenced global symbols.
52 virtual void relocate(void *Function, MachineRelocation *MR,
53 unsigned NumRelocs, unsigned char* GOTBase);