[LLVMdev] JITCodeEmitter patch - up for comments

[Aaron Gray]

This is the JITCodeEmitter patch, this is to facilitate cordening off the
JIT code from the
future direct object emission code (i) supporting the upcoming
ObjectCodeEmitter
class, on the X86, ARM, Alpha, and PowerPC platforms.  This involves generic

parameterization of backend code emitters to allow code emission to allotted

class types, JITCodeEmitter and ObjectCodeEmitter.

    include/llvm/CodeGen/MachineCodeEmitter.h

     * untouched until ObjectCodeEmitter takes over its functionality in the

       MachO backend, then it will become an abstract class.

    include/llvm/CodeGen/JITCodeEmitter.h

     * new file - JITCodeEmitter inherits from MachineCodeEmitter, this
divides
       and isolates off and takes over JIT code emission, JIT functionality,
and
       facilitates future JIT developments.

    include/llvm/Target/TargetJITInfo.h

     * Replace references to MachineCodeEmitter instead of JITCodeEmitter.

    include/llvm/Target/TargetMachine.h
    lib/CodeGen/LLVMTargetMachine.cpp

     * added suport for JITCodeEmitter

    lib/Target/X86/X86.h
    lib/Target/X86/X86TargetMachine.h
    lib/Target/X86/X86TargetMachine.cpp
    lib/Target/X86/X86CodeEmitter.cpp

     * Parameterized to support JITCodeEmitter and in future
ObjectCodeEmitter

    lib/Target/X86/X86JITInfo.h
    lib/Target/X86/X86JITInfo.cpp

     * Replaced references to MachineCodeEmitter with JITCodeEmitter.

    lib/Target/PowerPC/PPC.h
    lib/Target/PowerPC/PPCTargetMachine.h
    lib/Target/PowerPC/PPCTargetMachine.cpp
    lib/Target/PowerPC/PPCCodeEmitter.cpp

     * Parameterized to support JITCodeEmitter and in future
ObjectCodeEmitter

    lib/Target/PowerPC/PPCJITInfo.h
    lib/Target/PowerPC/PPCJITInfo.cpp

     * Replaced references to MachineCodeEmitter with JITCodeEmitter.

    lib/Target/ARM/ARM.h
    lib/Target/ARM/ARMTargetMachine.h
    lib/Target/ARM/ARMTargetMachine.cpp
    lib/Target/ARM/ARMCodeEmitter.cpp

     * Parameterized to support JITCodeEmitter and in future
ObjectCodeEmitter

    lib/Target/ARM/ARMJITInfo.h
    lib/Target/ARM/ARMJITInfo.cpp

     * Replaced references to MachineCodeEmitter with JITCodeEmitter.

    lib/Target/Alpha/Alpha.h
    lib/Target/Alpha/AlphaTargetMachine.h
    lib/Target/Alpha/AlphaTargetMachine.cpp
    lib/Target/Alpha/AlphaCodeEmitter.cpp

     * Parameterized to support JITCodeEmitter and in future
ObjectCodeEmitter

    lib/Target/Alpha/AlphaJITInfo.h
    lib/Target/Alpha/AlphaJITInfo.cpp

     * Replaced references to MachineCodeEmitter with JITCodeEmitter.

    lib/ExecutionEngine/JIT/JIT.h
    lib/ExecutionEngine/JIT/JIT.cpp
    lib/ExecutionEngine/JIT/JITEmitter.cpp
    lib/ExecutionEngine/JIT/JITDwarfEmitter.h
    lib/ExecutionEngine/JIT/JITDwarfEmitter.cpp

     * Modified to use JITCodeEmitter instead of MachineCodeEmitter

(i) http://wiki.llvm.org/Direct_Object_Code_Emission
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