[PATCH] [RFC]TILE-Gx: updated patch for final review

[Jiong WANG]

  Hi Sean, Joerg,

    thanks for your time to review.

    I found some of these problems are widely existed on other targets like ARM, Mips etc. For example:

  unsigned TileRegisterInfo::getEHExceptionRegister() const {
    llvm_unreachable("What is the exception register");
  }

  it think it's actually dead code.

  different backend always borrow code from each other, so those glitches are propagating. TILE-Gx's calling convention implementaion borrowed Mips code, fixed most of these problems on TILE-Gx.

    1. rename variable name according to coding style as more as possible.

    2. fixed all glitches in regression tests.

    3. tried to factor/simplify those code if possible.

    please review, thanks.

  ---
  Regards,
  Jiong
  Tilera Corporation.

http://llvm-reviews.chandlerc.com/D573

CHANGE SINCE LAST DIFF
  http://llvm-reviews.chandlerc.com/D573?vs=1396&id=1411#toc

Files:
  include/clang/Basic/TargetInfo.h
  lib/AST/ASTContext.cpp
  lib/Basic/Targets.cpp
  lib/CodeGen/TargetInfo.cpp
  lib/Driver/ToolChains.cpp
  lib/Driver/Tools.cpp
  lib/Driver/Tools.h
  autoconf/configure.ac
  configure
  include/llvm/ADT/Triple.h
  include/llvm/MC/MCExpr.h
  include/llvm/Object/ELF.h
  include/llvm/Object/RelocVisitor.h
  include/llvm/Support/ELF.h
  lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
  lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
  lib/MC/MCExpr.cpp
  lib/Support/Triple.cpp
  lib/Target/LLVMBuild.txt
  lib/Target/Tile/AsmParser/CMakeLists.txt
  lib/Target/Tile/AsmParser/LLVMBuild.txt
  lib/Target/Tile/AsmParser/Makefile
  lib/Target/Tile/AsmParser/TileAsmParser.cpp
  lib/Target/Tile/CMakeLists.txt
  lib/Target/Tile/InstPrinter/CMakeLists.txt
  lib/Target/Tile/InstPrinter/LLVMBuild.txt
  lib/Target/Tile/InstPrinter/Makefile
  lib/Target/Tile/InstPrinter/TileInstPrinter.cpp
  lib/Target/Tile/InstPrinter/TileInstPrinter.h
  lib/Target/Tile/LLVMBuild.txt
  lib/Target/Tile/MCTargetDesc/CMakeLists.txt
  lib/Target/Tile/MCTargetDesc/LLVMBuild.txt
  lib/Target/Tile/MCTargetDesc/Makefile
  lib/Target/Tile/MCTargetDesc/TileAsmBackend.cpp
  lib/Target/Tile/MCTargetDesc/TileBaseInfo.h
  lib/Target/Tile/MCTargetDesc/TileELFObjectWriter.cpp
  lib/Target/Tile/MCTargetDesc/TileFixupKinds.h
  lib/Target/Tile/MCTargetDesc/TileMCAsmInfo.cpp
  lib/Target/Tile/MCTargetDesc/TileMCAsmInfo.h
  lib/Target/Tile/MCTargetDesc/TileMCCodeEmitter.cpp
  lib/Target/Tile/MCTargetDesc/TileMCTargetDesc.cpp
  lib/Target/Tile/MCTargetDesc/TileMCTargetDesc.h
  lib/Target/Tile/Makefile
  lib/Target/Tile/TargetInfo/CMakeLists.txt
  lib/Target/Tile/TargetInfo/LLVMBuild.txt
  lib/Target/Tile/TargetInfo/Makefile
  lib/Target/Tile/TargetInfo/TileTargetInfo.cpp
  lib/Target/Tile/Tile.h
  lib/Target/Tile/Tile.td
  lib/Target/Tile/TileAsmPrinter.cpp
  lib/Target/Tile/TileAsmPrinter.h
  lib/Target/Tile/TileCallingConv.h
  lib/Target/Tile/TileCallingConv.td
  lib/Target/Tile/TileExpandPseudo.cpp
  lib/Target/Tile/TileFrameLowering.cpp
  lib/Target/Tile/TileFrameLowering.h
  lib/Target/Tile/TileISelDAGToDAG.cpp
  lib/Target/Tile/TileISelLowering.cpp
  lib/Target/Tile/TileISelLowering.h
  lib/Target/Tile/TileInstrFormats.td
  lib/Target/Tile/TileInstrInfo.cpp
  lib/Target/Tile/TileInstrInfo.h
  lib/Target/Tile/TileInstrInfo.td
  lib/Target/Tile/TileMCInst.h
  lib/Target/Tile/TileMCInstLower.cpp
  lib/Target/Tile/TileMCInstLower.h
  lib/Target/Tile/TileMachineFunction.cpp
  lib/Target/Tile/TileMachineFunction.h
  lib/Target/Tile/TileRegisterInfo.cpp
  lib/Target/Tile/TileRegisterInfo.h
  lib/Target/Tile/TileRegisterInfo.td
  lib/Target/Tile/TileRelocations.h
  lib/Target/Tile/TileSchedule.td
  lib/Target/Tile/TileSelectionDAGInfo.cpp
  lib/Target/Tile/TileSelectionDAGInfo.h
  lib/Target/Tile/TileSubtarget.cpp
  lib/Target/Tile/TileSubtarget.h
  lib/Target/Tile/TileTargetMachine.cpp
  lib/Target/Tile/TileTargetMachine.h
  lib/Target/Tile/TileVLIWPacketizer.cpp
  projects/sample/autoconf/configure.ac
  projects/sample/configure
  test/CodeGen/Tile/alloca.ll
  test/CodeGen/Tile/args.ll
  test/CodeGen/Tile/atomic.ll
  test/CodeGen/Tile/bswap.ll
  test/CodeGen/Tile/ctlz.ll
  test/CodeGen/Tile/ctpop.ll
  test/CodeGen/Tile/cttz.ll
  test/CodeGen/Tile/divrem.ll
  test/CodeGen/Tile/fcmp.ll
  test/CodeGen/Tile/fdiv.ll
  test/CodeGen/Tile/fmul.ll
  test/CodeGen/Tile/frame-address.ll
  test/CodeGen/Tile/global-address.ll
  test/CodeGen/Tile/imm.ll
  test/CodeGen/Tile/lit.local.cfg
  test/CodeGen/Tile/mul.ll
  test/CodeGen/Tile/return-address.ll
  test/CodeGen/Tile/select.ll
  test/CodeGen/Tile/struct_args.ll
  test/CodeGen/Tile/switch-table.ll
  test/CodeGen/Tile/tls-models.ll
  test/CodeGen/Tile/tls.ll
  test/ExecutionEngine/MCJIT/lit.local.cfg
  test/MC/Tile/basic-tilegx-instructions.s
  test/MC/Tile/lit.local.cfg
  test/MC/Tile/pic-symbol.ll
  test/MC/Tile/tilegx-bundle.s
  test/lit.cfg
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