[PATCH] MIR Serialization: Serialize register mask machine operands.

[Alex Lorenz]

Hi dexonsmith, bob.wilson, bogner,

This patch is based on a previous serialization patch that global address machine operands (http://reviews.llvm.org/D10671).

This patch implements serialization of register mask machine operands. This patch serializes the call preserved register masks that are defined by a target, it can't serialize arbitrary register masks.

This patch also extends the TargetRegisterInfo class and TableGen so that the users of TRI can get the list of all the call preserved register masks and a list of names that correspond to each mask.

This is what the extended tablegen would produce for the X86 TRI:

  ArrayRef<const uint32_t *> X86GenRegisterInfo::getRegMasks() const {
    static const uint32_t *Masks[] = {
      CSR_32_RegMask, 
      CSR_32EHRet_RegMask, 
      CSR_64_RegMask, 
      CSR_64EHRet_RegMask, 
      CSR_64_AllRegs_RegMask, 
      CSR_64_AllRegs_AVX_RegMask, 
      CSR_64_Intel_OCL_BI_RegMask, 
      CSR_64_Intel_OCL_BI_AVX_RegMask, 
      CSR_64_Intel_OCL_BI_AVX512_RegMask, 
      CSR_64_MostRegs_RegMask, 
      CSR_64_RT_AllRegs_RegMask, 
      CSR_64_RT_AllRegs_AVX_RegMask, 
      CSR_64_RT_MostRegs_RegMask, 
      CSR_NoRegs_RegMask, 
      CSR_Win64_RegMask, 
      CSR_Win64_Intel_OCL_BI_AVX_RegMask, 
      CSR_Win64_Intel_OCL_BI_AVX512_RegMask, 
      nullptr
    };
    return ArrayRef<const uint32_t *>(Masks, (size_t)17);
  }

  ArrayRef<const char *> X86GenRegisterInfo::getRegMaskNames() const {
    static const char *Names[] = {
      "CSR_32",
      "CSR_32EHRet",
      "CSR_64",
      "CSR_64EHRet",
      "CSR_64_AllRegs",
      "CSR_64_AllRegs_AVX",
      "CSR_64_Intel_OCL_BI",
      "CSR_64_Intel_OCL_BI_AVX",
      "CSR_64_Intel_OCL_BI_AVX512",
      "CSR_64_MostRegs",
      "CSR_64_RT_AllRegs",
      "CSR_64_RT_AllRegs_AVX",
      "CSR_64_RT_MostRegs",
      "CSR_NoRegs",
      "CSR_Win64",
      "CSR_Win64_Intel_OCL_BI_AVX",
      "CSR_Win64_Intel_OCL_BI_AVX512",
      nullptr
    };
    return ArrayRef<const char *>(Names, (size_t)17);
  }

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D10673

Files:
  include/llvm/Target/TargetRegisterInfo.h
  lib/CodeGen/MIRParser/MIParser.cpp
  lib/CodeGen/MIRPrinter.cpp
  test/CodeGen/MIR/X86/register-mask-operands.mir
  utils/TableGen/RegisterInfoEmitter.cpp

EMAIL PREFERENCES
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