Refactor X86 target to separate MC code from Target code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135930 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 501 deletions

diff --git a/lib/Target/X86/X86InstrInfo.h b/lib/Target/X86/X86InstrInfo.h
index 5f2eba34ac..931d6cad1d 100644
--- a/lib/Target/X86/X86InstrInfo.h
+++ b/lib/Target/X86/X86InstrInfo.h
@@ -27,24 +27,6 @@ namespace llvm {
   class X86TargetMachine;
 
 namespace X86 {
-  // Enums for memory operand decoding.  Each memory operand is represented with
-  // a 5 operand sequence in the form:
-  //   [BaseReg, ScaleAmt, IndexReg, Disp, Segment]
-  // These enums help decode this.
-  enum {
-    AddrBaseReg = 0,
-    AddrScaleAmt = 1,
-    AddrIndexReg = 2,
-    AddrDisp = 3,
-
-    /// AddrSegmentReg - The operand # of the segment in the memory operand.
-    AddrSegmentReg = 4,
-
-    /// AddrNumOperands - Total number of operands in a memory reference.
-    AddrNumOperands = 5
-  };
-
-
   // X86 specific condition code. These correspond to X86_*_COND in
   // X86InstrInfo.td. They must be kept in synch.
   enum CondCode {
@@ -82,133 +64,8 @@ namespace X86 {
   /// GetOppositeBranchCondition - Return the inverse of the specified cond,
   /// e.g. turning COND_E to COND_NE.
   CondCode GetOppositeBranchCondition(X86::CondCode CC);
+}  // end namespace X86;
 
-}
-
-/// X86II - This namespace holds all of the target specific flags that
-/// instruction info tracks.
-///
-namespace X86II {
-  /// Target Operand Flag enum.
-  enum TOF {
-    //===------------------------------------------------------------------===//
-    // X86 Specific MachineOperand flags.
-
-    MO_NO_FLAG,
-
-    /// MO_GOT_ABSOLUTE_ADDRESS - On a symbol operand, this represents a
-    /// relocation of:
-    ///    SYMBOL_LABEL + [. - PICBASELABEL]
-    MO_GOT_ABSOLUTE_ADDRESS,
-
-    /// MO_PIC_BASE_OFFSET - On a symbol operand this indicates that the
-    /// immediate should get the value of the symbol minus the PIC base label:
-    ///    SYMBOL_LABEL - PICBASELABEL
-    MO_PIC_BASE_OFFSET,
-
-    /// MO_GOT - On a symbol operand this indicates that the immediate is the
-    /// offset to the GOT entry for the symbol name from the base of the GOT.
-    ///
-    /// See the X86-64 ELF ABI supplement for more details.
-    ///    SYMBOL_LABEL @GOT
-    MO_GOT,
-
-    /// MO_GOTOFF - On a symbol operand this indicates that the immediate is
-    /// the offset to the location of the symbol name from the base of the GOT.
-    ///
-    /// See the X86-64 ELF ABI supplement for more details.
-    ///    SYMBOL_LABEL @GOTOFF
-    MO_GOTOFF,
-
-    /// MO_GOTPCREL - On a symbol operand this indicates that the immediate is
-    /// offset to the GOT entry for the symbol name from the current code
-    /// location.
-    ///
-    /// See the X86-64 ELF ABI supplement for more details.
-    ///    SYMBOL_LABEL @GOTPCREL
-    MO_GOTPCREL,
-
-    /// MO_PLT - On a symbol operand this indicates that the immediate is
-    /// offset to the PLT entry of symbol name from the current code location.
-    ///
-    /// See the X86-64 ELF ABI supplement for more details.
-    ///    SYMBOL_LABEL @PLT
-    MO_PLT,
-
-    /// MO_TLSGD - On a symbol operand this indicates that the immediate is
-    /// some TLS offset.
-    ///
-    /// See 'ELF Handling for Thread-Local Storage' for more details.
-    ///    SYMBOL_LABEL @TLSGD
-    MO_TLSGD,
-
-    /// MO_GOTTPOFF - On a symbol operand this indicates that the immediate is
-    /// some TLS offset.
-    ///
-    /// See 'ELF Handling for Thread-Local Storage' for more details.
-    ///    SYMBOL_LABEL @GOTTPOFF
-    MO_GOTTPOFF,
-
-    /// MO_INDNTPOFF - On a symbol operand this indicates that the immediate is
-    /// some TLS offset.
-    ///
-    /// See 'ELF Handling for Thread-Local Storage' for more details.
-    ///    SYMBOL_LABEL @INDNTPOFF
-    MO_INDNTPOFF,
-
-    /// MO_TPOFF - On a symbol operand this indicates that the immediate is
-    /// some TLS offset.
-    ///
-    /// See 'ELF Handling for Thread-Local Storage' for more details.
-    ///    SYMBOL_LABEL @TPOFF
-    MO_TPOFF,
-
-    /// MO_NTPOFF - On a symbol operand this indicates that the immediate is
-    /// some TLS offset.
-    ///
-    /// See 'ELF Handling for Thread-Local Storage' for more details.
-    ///    SYMBOL_LABEL @NTPOFF
-    MO_NTPOFF,
-
-    /// MO_DLLIMPORT - On a symbol operand "FOO", this indicates that the
-    /// reference is actually to the "__imp_FOO" symbol.  This is used for
-    /// dllimport linkage on windows.
-    MO_DLLIMPORT,
-
-    /// MO_DARWIN_STUB - On a symbol operand "FOO", this indicates that the
-    /// reference is actually to the "FOO$stub" symbol.  This is used for calls
-    /// and jumps to external functions on Tiger and earlier.
-    MO_DARWIN_STUB,
-
-    /// MO_DARWIN_NONLAZY - On a symbol operand "FOO", this indicates that the
-    /// reference is actually to the "FOO$non_lazy_ptr" symbol, which is a
-    /// non-PIC-base-relative reference to a non-hidden dyld lazy pointer stub.
-    MO_DARWIN_NONLAZY,
-
-    /// MO_DARWIN_NONLAZY_PIC_BASE - On a symbol operand "FOO", this indicates
-    /// that the reference is actually to "FOO$non_lazy_ptr - PICBASE", which is
-    /// a PIC-base-relative reference to a non-hidden dyld lazy pointer stub.
-    MO_DARWIN_NONLAZY_PIC_BASE,
-
-    /// MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE - On a symbol operand "FOO", this
-    /// indicates that the reference is actually to "FOO$non_lazy_ptr -PICBASE",
-    /// which is a PIC-base-relative reference to a hidden dyld lazy pointer
-    /// stub.
-    MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE,
-
-    /// MO_TLVP - On a symbol operand this indicates that the immediate is
-    /// some TLS offset.
-    ///
-    /// This is the TLS offset for the Darwin TLS mechanism.
-    MO_TLVP,
-
-    /// MO_TLVP_PIC_BASE - On a symbol operand this indicates that the immediate
-    /// is some TLS offset from the picbase.
-    ///
-    /// This is the 32-bit TLS offset for Darwin TLS in PIC mode.
-    MO_TLVP_PIC_BASE
-  };
-}
 
 /// isGlobalStubReference - Return true if the specified TargetFlag operand is
 /// a reference to a stub for a global, not the global itself.
@@ -243,353 +100,6 @@ inline static bool isGlobalRelativeToPICBase(unsigned char TargetFlag) {
   }
 }
 
-/// X86II - This namespace holds all of the target specific flags that
-/// instruction info tracks.
-///
-namespace X86II {
-  enum {
-    //===------------------------------------------------------------------===//
-    // Instruction encodings.  These are the standard/most common forms for X86
-    // instructions.
-    //
-
-    // PseudoFrm - This represents an instruction that is a pseudo instruction
-    // or one that has not been implemented yet.  It is illegal to code generate
-    // it, but tolerated for intermediate implementation stages.
-    Pseudo         = 0,
-
-    /// Raw - This form is for instructions that don't have any operands, so
-    /// they are just a fixed opcode value, like 'leave'.
-    RawFrm         = 1,
-
-    /// AddRegFrm - This form is used for instructions like 'push r32' that have
-    /// their one register operand added to their opcode.
-    AddRegFrm      = 2,
-
-    /// MRMDestReg - This form is used for instructions that use the Mod/RM byte
-    /// to specify a destination, which in this case is a register.
-    ///
-    MRMDestReg     = 3,
-
-    /// MRMDestMem - This form is used for instructions that use the Mod/RM byte
-    /// to specify a destination, which in this case is memory.
-    ///
-    MRMDestMem     = 4,
-
-    /// MRMSrcReg - This form is used for instructions that use the Mod/RM byte
-    /// to specify a source, which in this case is a register.
-    ///
-    MRMSrcReg      = 5,
-
-    /// MRMSrcMem - This form is used for instructions that use the Mod/RM byte
-    /// to specify a source, which in this case is memory.
-    ///
-    MRMSrcMem      = 6,
-
-    /// MRM[0-7][rm] - These forms are used to represent instructions that use
-    /// a Mod/RM byte, and use the middle field to hold extended opcode
-    /// information.  In the intel manual these are represented as /0, /1, ...
-    ///
-
-    // First, instructions that operate on a register r/m operand...
-    MRM0r = 16,  MRM1r = 17,  MRM2r = 18,  MRM3r = 19, // Format /0 /1 /2 /3
-    MRM4r = 20,  MRM5r = 21,  MRM6r = 22,  MRM7r = 23, // Format /4 /5 /6 /7
-
-    // Next, instructions that operate on a memory r/m operand...
-    MRM0m = 24,  MRM1m = 25,  MRM2m = 26,  MRM3m = 27, // Format /0 /1 /2 /3
-    MRM4m = 28,  MRM5m = 29,  MRM6m = 30,  MRM7m = 31, // Format /4 /5 /6 /7
-
-    // MRMInitReg - This form is used for instructions whose source and
-    // destinations are the same register.
-    MRMInitReg = 32,
-
-    //// MRM_C1 - A mod/rm byte of exactly 0xC1.
-    MRM_C1 = 33,
-    MRM_C2 = 34,
-    MRM_C3 = 35,
-    MRM_C4 = 36,
-    MRM_C8 = 37,
-    MRM_C9 = 38,
-    MRM_E8 = 39,
-    MRM_F0 = 40,
-    MRM_F8 = 41,
-    MRM_F9 = 42,
-    MRM_D0 = 45,
-    MRM_D1 = 46,
-
-    /// RawFrmImm8 - This is used for the ENTER instruction, which has two
-    /// immediates, the first of which is a 16-bit immediate (specified by
-    /// the imm encoding) and the second is a 8-bit fixed value.
-    RawFrmImm8 = 43,
-
-    /// RawFrmImm16 - This is used for CALL FAR instructions, which have two
-    /// immediates, the first of which is a 16 or 32-bit immediate (specified by
-    /// the imm encoding) and the second is a 16-bit fixed value.  In the AMD
-    /// manual, this operand is described as pntr16:32 and pntr16:16
-    RawFrmImm16 = 44,
-
-    FormMask       = 63,
-
-    //===------------------------------------------------------------------===//
-    // Actual flags...
-
-    // OpSize - Set if this instruction requires an operand size prefix (0x66),
-    // which most often indicates that the instruction operates on 16 bit data
-    // instead of 32 bit data.
-    OpSize      = 1 << 6,
-
-    // AsSize - Set if this instruction requires an operand size prefix (0x67),
-    // which most often indicates that the instruction address 16 bit address
-    // instead of 32 bit address (or 32 bit address in 64 bit mode).
-    AdSize      = 1 << 7,
-
-    //===------------------------------------------------------------------===//
-    // Op0Mask - There are several prefix bytes that are used to form two byte
-    // opcodes.  These are currently 0x0F, 0xF3, and 0xD8-0xDF.  This mask is
-    // used to obtain the setting of this field.  If no bits in this field is
-    // set, there is no prefix byte for obtaining a multibyte opcode.
-    //
-    Op0Shift    = 8,
-    Op0Mask     = 0x1F << Op0Shift,
-
-    // TB - TwoByte - Set if this instruction has a two byte opcode, which
-    // starts with a 0x0F byte before the real opcode.
-    TB          = 1 << Op0Shift,
-
-    // REP - The 0xF3 prefix byte indicating repetition of the following
-    // instruction.
-    REP         = 2 << Op0Shift,
-
-    // D8-DF - These escape opcodes are used by the floating point unit.  These
-    // values must remain sequential.
-    D8 = 3 << Op0Shift,   D9 = 4 << Op0Shift,
-    DA = 5 << Op0Shift,   DB = 6 << Op0Shift,
-    DC = 7 << Op0Shift,   DD = 8 << Op0Shift,
-    DE = 9 << Op0Shift,   DF = 10 << Op0Shift,
-
-    // XS, XD - These prefix codes are for single and double precision scalar
-    // floating point operations performed in the SSE registers.
-    XD = 11 << Op0Shift,  XS = 12 << Op0Shift,
-
-    // T8, TA, A6, A7 - Prefix after the 0x0F prefix.
-    T8 = 13 << Op0Shift,  TA = 14 << Op0Shift,
-    A6 = 15 << Op0Shift,  A7 = 16 << Op0Shift,
-
-    // TF - Prefix before and after 0x0F
-    TF = 17 << Op0Shift,
-
-    //===------------------------------------------------------------------===//
-    // REX_W - REX prefixes are instruction prefixes used in 64-bit mode.
-    // They are used to specify GPRs and SSE registers, 64-bit operand size,
-    // etc. We only cares about REX.W and REX.R bits and only the former is
-    // statically determined.
-    //
-    REXShift    = Op0Shift + 5,
-    REX_W       = 1 << REXShift,
-
-    //===------------------------------------------------------------------===//
-    // This three-bit field describes the size of an immediate operand.  Zero is
-    // unused so that we can tell if we forgot to set a value.
-    ImmShift = REXShift + 1,
-    ImmMask    = 7 << ImmShift,
-    Imm8       = 1 << ImmShift,
-    Imm8PCRel  = 2 << ImmShift,
-    Imm16      = 3 << ImmShift,
-    Imm16PCRel = 4 << ImmShift,
-    Imm32      = 5 << ImmShift,
-    Imm32PCRel = 6 << ImmShift,
-    Imm64      = 7 << ImmShift,
-
-    //===------------------------------------------------------------------===//
-    // FP Instruction Classification...  Zero is non-fp instruction.
-
-    // FPTypeMask - Mask for all of the FP types...
-    FPTypeShift = ImmShift + 3,
-    FPTypeMask  = 7 << FPTypeShift,
-
-    // NotFP - The default, set for instructions that do not use FP registers.
-    NotFP      = 0 << FPTypeShift,
-
-    // ZeroArgFP - 0 arg FP instruction which implicitly pushes ST(0), f.e. fld0
-    ZeroArgFP  = 1 << FPTypeShift,
-
-    // OneArgFP - 1 arg FP instructions which implicitly read ST(0), such as fst
-    OneArgFP   = 2 << FPTypeShift,
-
-    // OneArgFPRW - 1 arg FP instruction which implicitly read ST(0) and write a
-    // result back to ST(0).  For example, fcos, fsqrt, etc.
-    //
-    OneArgFPRW = 3 << FPTypeShift,
-
-    // TwoArgFP - 2 arg FP instructions which implicitly read ST(0), and an
-    // explicit argument, storing the result to either ST(0) or the implicit
-    // argument.  For example: fadd, fsub, fmul, etc...
-    TwoArgFP   = 4 << FPTypeShift,
-
-    // CompareFP - 2 arg FP instructions which implicitly read ST(0) and an
-    // explicit argument, but have no destination.  Example: fucom, fucomi, ...
-    CompareFP  = 5 << FPTypeShift,
-
-    // CondMovFP - "2 operand" floating point conditional move instructions.
-    CondMovFP  = 6 << FPTypeShift,
-
-    // SpecialFP - Special instruction forms.  Dispatch by opcode explicitly.
-    SpecialFP  = 7 << FPTypeShift,
-
-    // Lock prefix
-    LOCKShift = FPTypeShift + 3,
-    LOCK = 1 << LOCKShift,
-
-    // Segment override prefixes. Currently we just need ability to address
-    // stuff in gs and fs segments.
-    SegOvrShift = LOCKShift + 1,
-    SegOvrMask  = 3 << SegOvrShift,
-    FS          = 1 << SegOvrShift,
-    GS          = 2 << SegOvrShift,
-
-    // Execution domain for SSE instructions in bits 23, 24.
-    // 0 in bits 23-24 means normal, non-SSE instruction.
-    SSEDomainShift = SegOvrShift + 2,
-
-    OpcodeShift   = SSEDomainShift + 2,
-
-    //===------------------------------------------------------------------===//
-    /// VEX - The opcode prefix used by AVX instructions
-    VEXShift = OpcodeShift + 8,
-    VEX         = 1U << 0,
-
-    /// VEX_W - Has a opcode specific functionality, but is used in the same
-    /// way as REX_W is for regular SSE instructions.
-    VEX_W       = 1U << 1,
-
-    /// VEX_4V - Used to specify an additional AVX/SSE register. Several 2
-    /// address instructions in SSE are represented as 3 address ones in AVX
-    /// and the additional register is encoded in VEX_VVVV prefix.
-    VEX_4V      = 1U << 2,
-
-    /// VEX_I8IMM - Specifies that the last register used in a AVX instruction,
-    /// must be encoded in the i8 immediate field. This usually happens in
-    /// instructions with 4 operands.
-    VEX_I8IMM   = 1U << 3,
-
-    /// VEX_L - Stands for a bit in the VEX opcode prefix meaning the current
-    /// instruction uses 256-bit wide registers. This is usually auto detected
-    /// if a VR256 register is used, but some AVX instructions also have this
-    /// field marked when using a f256 memory references.
-    VEX_L       = 1U << 4,
-
-    /// Has3DNow0F0FOpcode - This flag indicates that the instruction uses the
-    /// wacky 0x0F 0x0F prefix for 3DNow! instructions.  The manual documents
-    /// this as having a 0x0F prefix with a 0x0F opcode, and each instruction
-    /// storing a classifier in the imm8 field.  To simplify our implementation,
-    /// we handle this by storeing the classifier in the opcode field and using
-    /// this flag to indicate that the encoder should do the wacky 3DNow! thing.
-    Has3DNow0F0FOpcode = 1U << 5
-  };
-
-  // getBaseOpcodeFor - This function returns the "base" X86 opcode for the
-  // specified machine instruction.
-  //
-  static inline unsigned char getBaseOpcodeFor(uint64_t TSFlags) {
-    return TSFlags >> X86II::OpcodeShift;
-  }
-
-  static inline bool hasImm(uint64_t TSFlags) {
-    return (TSFlags & X86II::ImmMask) != 0;
-  }
-
-  /// getSizeOfImm - Decode the "size of immediate" field from the TSFlags field
-  /// of the specified instruction.
-  static inline unsigned getSizeOfImm(uint64_t TSFlags) {
-    switch (TSFlags & X86II::ImmMask) {
-    default: assert(0 && "Unknown immediate size");
-    case X86II::Imm8:
-    case X86II::Imm8PCRel:  return 1;
-    case X86II::Imm16:
-    case X86II::Imm16PCRel: return 2;
-    case X86II::Imm32:
-    case X86II::Imm32PCRel: return 4;
-    case X86II::Imm64:      return 8;
-    }
-  }
-
-  /// isImmPCRel - Return true if the immediate of the specified instruction's
-  /// TSFlags indicates that it is pc relative.
-  static inline unsigned isImmPCRel(uint64_t TSFlags) {
-    switch (TSFlags & X86II::ImmMask) {
-    default: assert(0 && "Unknown immediate size");
-    case X86II::Imm8PCRel:
-    case X86II::Imm16PCRel:
-    case X86II::Imm32PCRel:
-      return true;
-    case X86II::Imm8:
-    case X86II::Imm16:
-    case X86II::Imm32:
-    case X86II::Imm64:
-      return false;
-    }
-  }
-
-  /// getMemoryOperandNo - The function returns the MCInst operand # for the
-  /// first field of the memory operand.  If the instruction doesn't have a
-  /// memory operand, this returns -1.
-  ///
-  /// Note that this ignores tied operands.  If there is a tied register which
-  /// is duplicated in the MCInst (e.g. "EAX = addl EAX, [mem]") it is only
-  /// counted as one operand.
-  ///
-  static inline int getMemoryOperandNo(uint64_t TSFlags) {
-    switch (TSFlags & X86II::FormMask) {
-    case X86II::MRMInitReg:  assert(0 && "FIXME: Remove this form");
-    default: assert(0 && "Unknown FormMask value in getMemoryOperandNo!");
-    case X86II::Pseudo:
-    case X86II::RawFrm:
-    case X86II::AddRegFrm:
-    case X86II::MRMDestReg:
-    case X86II::MRMSrcReg:
-    case X86II::RawFrmImm8:
-    case X86II::RawFrmImm16:
-       return -1;
-    case X86II::MRMDestMem:
-      return 0;
-    case X86II::MRMSrcMem: {
-      bool HasVEX_4V = (TSFlags >> X86II::VEXShift) & X86II::VEX_4V;
-      unsigned FirstMemOp = 1;
-      if (HasVEX_4V)
-        ++FirstMemOp;// Skip the register source (which is encoded in VEX_VVVV).
-
-      // FIXME: Maybe lea should have its own form?  This is a horrible hack.
-      //if (Opcode == X86::LEA64r || Opcode == X86::LEA64_32r ||
-      //    Opcode == X86::LEA16r || Opcode == X86::LEA32r)
-      return FirstMemOp;
-    }
-    case X86II::MRM0r: case X86II::MRM1r:
-    case X86II::MRM2r: case X86II::MRM3r:
-    case X86II::MRM4r: case X86II::MRM5r:
-    case X86II::MRM6r: case X86II::MRM7r:
-      return -1;
-    case X86II::MRM0m: case X86II::MRM1m:
-    case X86II::MRM2m: case X86II::MRM3m:
-    case X86II::MRM4m: case X86II::MRM5m:
-    case X86II::MRM6m: case X86II::MRM7m:
-      return 0;
-    case X86II::MRM_C1:
-    case X86II::MRM_C2:
-    case X86II::MRM_C3:
-    case X86II::MRM_C4:
-    case X86II::MRM_C8:
-    case X86II::MRM_C9:
-    case X86II::MRM_E8:
-    case X86II::MRM_F0:
-    case X86II::MRM_F8:
-    case X86II::MRM_F9:
-    case X86II::MRM_D0:
-    case X86II::MRM_D1:
-      return -1;
-    }
-  }
-}
-
 inline static bool isScale(const MachineOperand &MO) {
   return MO.isImm() &&
     (MO.getImm() == 1 || MO.getImm() == 2 ||
@@ -829,20 +339,11 @@ public:
   /// instruction that defines the specified register class.
   bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const;
 
-  static bool isX86_64NonExtLowByteReg(unsigned reg) {
-    return (reg == X86::SPL || reg == X86::BPL ||
-          reg == X86::SIL || reg == X86::DIL);
-  }
-
   static bool isX86_64ExtendedReg(const MachineOperand &MO) {
     if (!MO.isReg()) return false;
-    return isX86_64ExtendedReg(MO.getReg());
+    return X86II::isX86_64ExtendedReg(MO.getReg());
   }
 
-  /// isX86_64ExtendedReg - Is the MachineOperand a x86-64 extended (r8 or
-  /// higher) register?  e.g. r8, xmm8, xmm13, etc.
-  static bool isX86_64ExtendedReg(unsigned RegNo);
-
   /// getGlobalBaseReg - Return a virtual register initialized with the
   /// the global base register value. Output instructions required to
   /// initialize the register in the function entry block, if necessary.