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1911fd4f85
This pass: 1. Splits TargetMachine into TargetMachine (generic targets, can be implemented any way, like the CBE) and LLVMTargetMachine (subclass of TM that is used by things using libcodegen and other support). 2. Instead of having each target fully populate the passmgr for file or JIT output, move all this to common code, and give targets hooks they can implement. 3. Commonalize the target population stuff between file emission and JIT emission. 4. All (native code) codegen stuff now happens in a FunctionPassManager, which paves the way for "fast -O0" stuff in the CFE later, and now LLC could lazily stream .bc files from disk to use less memory. 5. There are now many fewer #includes and the targets don't depend on the scalar xforms or libanalysis anymore (but codegen does). 6. Changing common code generator pass ordering stuff no longer requires touching all targets. 7. The JIT now has the option of "-fast" codegen or normal optimized codegen, which is now orthogonal to the fact that JIT'ing is being done. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30081 91177308-0d34-0410-b5e6-96231b3b80d8
50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
//===- AlphaJITInfo.h - Alpha impl. of the JIT interface ----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source 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 Alpha implementation of the TargetJITInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef ALPHA_JITINFO_H
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#define ALPHA_JITINFO_H
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#include "llvm/Target/TargetJITInfo.h"
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#include "llvm/GlobalValue.h"
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#include <string>
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#include <map>
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namespace llvm {
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class TargetMachine;
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class AlphaJITInfo : public TargetJITInfo {
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protected:
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TargetMachine &TM;
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public:
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AlphaJITInfo(TargetMachine &tm) : TM(tm)
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{ useGOT = true; }
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virtual void *emitFunctionStub(void *Fn, MachineCodeEmitter &MCE);
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virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
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virtual void relocate(void *Function, MachineRelocation *MR,
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unsigned NumRelocs, unsigned char* GOTBase);
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/// replaceMachineCodeForFunction - Make it so that calling the function
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/// whose machine code is at OLD turns into a call to NEW, perhaps by
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/// overwriting OLD with a branch to NEW. This is used for self-modifying
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/// code.
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///
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virtual void replaceMachineCodeForFunction(void *Old, void *New);
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private:
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static const unsigned GOToffset = 4096;
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};
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}
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#endif
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