include/llvm/CodeGen/ValueTypes.h - llvm - Git at Google

 //===- CodeGen/ValueTypes.h - Low-Level Target independ. types --*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file defines the set of low-level target independent types which various
 // values in the code generator are.  This allows the target specific behavior
 // of instructions to be described to target independent passes.
 //
 //===----------------------------------------------------------------------===//

 #ifndef LLVM_CODEGEN_VALUETYPES_H
 #define LLVM_CODEGEN_VALUETYPES_H

 #include <cassert>
 #include <string>
 #include "llvm/Support/DataTypes.h"
 #include "llvm/Support/MathExtras.h"

 namespace llvm {
   class Type;

   struct MVT { // MVT = Machine Value Type
   public:

     enum SimpleValueType {
       // If you change this numbering, you must change the values in
       // ValueTypes.td as well!
       Other          =   0,   // This is a non-standard value
       i1             =   1,   // This is a 1 bit integer value
       i8             =   2,   // This is an 8 bit integer value
       i16            =   3,   // This is a 16 bit integer value
       i32            =   4,   // This is a 32 bit integer value
       i64            =   5,   // This is a 64 bit integer value
       i128           =   6,   // This is a 128 bit integer value

       FIRST_INTEGER_VALUETYPE = i1,
       LAST_INTEGER_VALUETYPE  = i128,

       f32            =   7,   // This is a 32 bit floating point value
       f64            =   8,   // This is a 64 bit floating point value
       f80            =   9,   // This is a 80 bit floating point value
       f128           =  10,   // This is a 128 bit floating point value
       ppcf128        =  11,   // This is a PPC 128-bit floating point value
       Flag           =  12,   // This is a condition code or machine flag.

       isVoid         =  13,   // This has no value

       v8i8           =  14,   //  8 x i8
       v4i16          =  15,   //  4 x i16
       v2i32          =  16,   //  2 x i32
       v1i64          =  17,   //  1 x i64
       v16i8          =  18,   // 16 x i8
       v8i16          =  19,   //  8 x i16
       v3i32          =  20,   //  3 x i32
       v4i32          =  21,   //  4 x i32
       v2i64          =  22,   //  2 x i64

       v2f32          =  23,   //  2 x f32
       v3f32          =  24,   //  3 x f32
       v4f32          =  25,   //  4 x f32
       v2f64          =  26,   //  2 x f64

       FIRST_VECTOR_VALUETYPE = v8i8,
       LAST_VECTOR_VALUETYPE  = v2f64,

       LAST_VALUETYPE =  27,   // This always remains at the end of the list.

       // iPTRAny - An int value the size of the pointer of the current
       // target to any address space. This must only be used internal to
       // tblgen. Other than for overloading, we treat iPTRAny the same as iPTR.
       iPTRAny        =  252,

       // fAny - Any floating-point or vector floating-point value. This is used
       // for intrinsics that have overloadings based on floating-point types.
       // This is only for tblgen's consumption!
       fAny           =  253,

       // iAny - An integer or vector integer value of any bit width. This is
       // used for intrinsics that have overloadings based on integer bit widths.
       // This is only for tblgen's consumption!
       iAny           =  254,

       // iPTR - An int value the size of the pointer of the current
       // target.  This should only be used internal to tblgen!
       iPTR           =  255
     };

     /// MVT - This type holds low-level value types. Valid values include any of
     /// the values in the SimpleValueType enum, or any value returned from one
     /// of the MVT methods.  Any value type equal to one of the SimpleValueType
     /// enum values is a "simple" value type.  All others are "extended".
     ///
     /// Note that simple doesn't necessary mean legal for the target machine.
     /// All legal value types must be simple, but often there are some simple
     /// value types that are not legal.
     ///
     /// @internal
     /// Extended types are either vector types or arbitrary precision integers.
     /// Arbitrary precision integers have iAny in the first SimpleTypeBits bits,
     /// and the bit-width in the next PrecisionBits bits, offset by minus one.
     /// Vector types are encoded by having the first
     /// SimpleTypeBits+PrecisionBits bits encode the vector element type
     /// (which must be a scalar type, possibly an arbitrary precision integer)
     /// and the remaining VectorBits upper bits encode the vector length, offset
     /// by one.
     ///
     /// 32--------------16-----------8-------------0
     ///  | Vector length | Precision | Simple type |
     ///  |               |      Vector element     |
     ///

   private:

     static const int SimpleTypeBits = 8;
     static const int PrecisionBits  = 8;
     static const int VectorBits     = 32 - SimpleTypeBits - PrecisionBits;

     static const uint32_t SimpleTypeMask =
       (~uint32_t(0) << (32 - SimpleTypeBits)) >> (32 - SimpleTypeBits);

     static const uint32_t PrecisionMask =
       ((~uint32_t(0) << VectorBits) >> (32 - PrecisionBits)) << SimpleTypeBits;

     static const uint32_t VectorMask =
       (~uint32_t(0) >> (32 - VectorBits)) << (32 - VectorBits);

     static const uint32_t ElementMask =
       (~uint32_t(0) << VectorBits) >> VectorBits;

     uint32_t V;

   public:

     MVT() {}
     MVT(SimpleValueType S) : V(S) {}

     inline bool operator== (const MVT VT) const { return V == VT.V; }
     inline bool operator!= (const MVT VT) const { return V != VT.V; }

     /// getIntegerVT - Returns the MVT that represents an integer with the given
     /// number of bits.
     static inline MVT getIntegerVT(unsigned BitWidth) {
       switch (BitWidth) {
       default:
         break;
       case 1:
         return i1;
       case 8:
         return i8;
       case 16:
         return i16;
       case 32:
         return i32;
       case 64:
         return i64;
       case 128:
         return i128;
       }
       MVT VT;
       VT.V = iAny | (((BitWidth - 1) << SimpleTypeBits) & PrecisionMask);
       assert(VT.getSizeInBits() == BitWidth && "Bad bit width!");
       return VT;
     }

     /// getVectorVT - Returns the MVT that represents a vector NumElements in
     /// length, where each element is of type VT.
     static inline MVT getVectorVT(MVT VT, unsigned NumElements) {
       switch (VT.V) {
       default:
         break;
       case i8:
         if (NumElements == 8)  return v8i8;
         if (NumElements == 16) return v16i8;
         break;
       case i16:
         if (NumElements == 4)  return v4i16;
         if (NumElements == 8)  return v8i16;
         break;
       case i32:
         if (NumElements == 2)  return v2i32;
         if (NumElements == 3)  return v3i32;
         if (NumElements == 4)  return v4i32;
         break;
       case i64:
         if (NumElements == 1)  return v1i64;
         if (NumElements == 2)  return v2i64;
         break;
       case f32:
         if (NumElements == 2)  return v2f32;
         if (NumElements == 3)  return v3f32;
         if (NumElements == 4)  return v4f32;
         break;
       case f64:
         if (NumElements == 2)  return v2f64;
         break;
       }
       MVT Result;
       Result.V = VT.V | ((NumElements + 1) << (32 - VectorBits));
       assert(Result.getVectorElementType() == VT &&
              "Bad vector element type!");
       assert(Result.getVectorNumElements() == NumElements &&
              "Bad vector length!");
       return Result;
     }

     /// getIntVectorWithNumElements - Return any integer vector type that has
     /// the specified number of elements.
     static inline MVT getIntVectorWithNumElements(unsigned NumElts) {
       switch (NumElts) {
       default: return getVectorVT(i8, NumElts);
       case  1: return v1i64;
       case  2: return v2i32;
       case  3: return v3i32;
       case  4: return v4i16;
       case  8: return v8i8;
       case 16: return v16i8;
       }
     }


     /// isSimple - Test if the given MVT is simple (as opposed to being
     /// extended).
     inline bool isSimple() const {
       return V <= SimpleTypeMask;
     }

     /// isExtended - Test if the given MVT is extended (as opposed to
     /// being simple).
     inline bool isExtended() const {
       return !isSimple();
     }

     /// isFloatingPoint - Return true if this is a FP, or a vector FP type.
     inline bool isFloatingPoint() const {
       uint32_t SVT = V & SimpleTypeMask;
       return (SVT >= f32 && SVT <= ppcf128) || (SVT >= v2f32 && SVT <= v2f64);
     }

     /// isInteger - Return true if this is an integer, or a vector integer type.
     inline bool isInteger() const {
       uint32_t SVT = V & SimpleTypeMask;
       return (SVT >= FIRST_INTEGER_VALUETYPE && SVT <= LAST_INTEGER_VALUETYPE) ||
         (SVT >= v8i8 && SVT <= v2i64) || (SVT == iAny && (V & PrecisionMask));
     }

     /// isVector - Return true if this is a vector value type.
     inline bool isVector() const {
       return (V >= FIRST_VECTOR_VALUETYPE && V <= LAST_VECTOR_VALUETYPE) ||
              (V & VectorMask);
     }

     /// is64BitVector - Return true if this is a 64-bit vector type.
     inline bool is64BitVector() const {
       return (V==v8i8 || V==v4i16 || V==v2i32 || V==v1i64 || V==v2f32 ||
               (isExtended() && isVector() && getSizeInBits()==64));
     }

     /// is128BitVector - Return true if this is a 128-bit vector type.
     inline bool is128BitVector() const {
       return (V==v16i8 || V==v8i16 || V==v4i32 || V==v2i64 ||
               V==v4f32 || V==v2f64 ||
               (isExtended() && isVector() && getSizeInBits()==128));
     }

     /// isByteSized - Return true if the bit size is a multiple of 8.
     inline bool isByteSized() const {
       return (getSizeInBits() & 7) == 0;
     }

     /// isRound - Return true if the size is a power-of-two number of bytes.
     inline bool isRound() const {
       unsigned BitSize = getSizeInBits();
       return BitSize >= 8 && !(BitSize & (BitSize - 1));
     }

     /// bitsGT - Return true if this has more bits than VT.
     inline bool bitsGT(MVT VT) const {
       return getSizeInBits() > VT.getSizeInBits();
     }

     /// bitsGE - Return true if this has no less bits than VT.
     inline bool bitsGE(MVT VT) const {
       return getSizeInBits() >= VT.getSizeInBits();
     }

     /// bitsLT - Return true if this has less bits than VT.
     inline bool bitsLT(MVT VT) const {
       return getSizeInBits() < VT.getSizeInBits();
     }

     /// bitsLE - Return true if this has no more bits than VT.
     inline bool bitsLE(MVT VT) const {
       return getSizeInBits() <= VT.getSizeInBits();
     }


     /// getSimpleVT - Return the SimpleValueType held in the specified
     /// simple MVT.
     inline SimpleValueType getSimpleVT() const {
       assert(isSimple() && "Expected a SimpleValueType!");
       return (SimpleValueType)V;
     }

     /// getVectorElementType - Given a vector type, return the type of
     /// each element.
     inline MVT getVectorElementType() const {
       assert(isVector() && "Invalid vector type!");
       switch (V) {
       default: {
         assert(isExtended() && "Unknown simple vector type!");
         MVT VT;
         VT.V = V & ElementMask;
         return VT;
       }
       case v8i8 :
       case v16i8: return i8;
       case v4i16:
       case v8i16: return i16;
       case v2i32:
       case v3i32:
       case v4i32: return i32;
       case v1i64:
       case v2i64: return i64;
       case v2f32:
       case v3f32:
       case v4f32: return f32;
       case v2f64: return f64;
       }
     }

     /// getVectorNumElements - Given a vector type, return the number of
     /// elements it contains.
     inline unsigned getVectorNumElements() const {
       assert(isVector() && "Invalid vector type!");
       switch (V) {
       default:
         assert(isExtended() && "Unknown simple vector type!");
         return ((V & VectorMask) >> (32 - VectorBits)) - 1;
       case v16i8: return 16;
       case v8i8 :
       case v8i16: return 8;
       case v4i16:
       case v4i32:
       case v4f32: return 4;
       case v3i32:
       case v3f32: return 3;
       case v2i32:
       case v2i64:
       case v2f32:
       case v2f64: return 2;
       case v1i64: return 1;
       }
     }

     /// getSizeInBits - Return the size of the specified value type in bits.
     inline unsigned getSizeInBits() const {
       switch (V) {
       default:
         assert(isExtended() && "MVT has no known size!");
         if (isVector())
           return getVectorElementType().getSizeInBits()*getVectorNumElements();
         if (isInteger())
           return ((V & PrecisionMask) >> SimpleTypeBits) + 1;
         assert(false && "Unknown value type!");
         return 0;
       case i1  :  return 1;
       case i8  :  return 8;
       case i16 :  return 16;
       case f32 :
       case i32 :  return 32;
       case f64 :
       case i64 :
       case v8i8:
       case v4i16:
       case v2i32:
       case v1i64:
       case v2f32: return 64;
       case f80 :  return 80;
       case v3i32:
       case v3f32: return 96;
       case f128:
       case ppcf128:
       case i128:
       case v16i8:
       case v8i16:
       case v4i32:
       case v2i64:
       case v4f32:
       case v2f64: return 128;
       }
     }

     /// getStoreSizeInBits - Return the number of bits overwritten by a store
     /// of the specified value type.
     inline unsigned getStoreSizeInBits() const {
       return (getSizeInBits() + 7)/8*8;
     }

     /// getRoundIntegerType - Rounds the bit-width of the given integer MVT up
     /// to the nearest power of two (and at least to eight), and returns the
     /// integer MVT with that number of bits.
     inline MVT getRoundIntegerType() const {
       assert(isInteger() && !isVector() && "Invalid integer type!");
       unsigned BitWidth = getSizeInBits();
       if (BitWidth <= 8)
         return i8;
       else
         return getIntegerVT(1 << Log2_32_Ceil(BitWidth));
     }

     /// getIntegerVTBitMask - Return an integer with 1's every place there are
     /// bits in the specified integer value type. FIXME: Should return an apint.
     inline uint64_t getIntegerVTBitMask() const {
       assert(isInteger() && !isVector() && "Only applies to int scalars!");
       return ~uint64_t(0UL) >> (64-getSizeInBits());
     }

     /// getIntegerVTSignBit - Return an integer with a 1 in the position of the
     /// sign bit for the specified integer value type. FIXME: Should return an
     /// apint.
     inline uint64_t getIntegerVTSignBit() const {
       assert(isInteger() && !isVector() && "Only applies to int scalars!");
       return uint64_t(1UL) << (getSizeInBits()-1);
     }

     /// getMVTString - This function returns value type as a string,
     /// e.g. "i32".
     std::string getMVTString() const;

     /// getTypeForMVT - This method returns an LLVM type corresponding to the
     /// specified MVT.  For integer types, this returns an unsigned type.  Note
     /// that this will abort for types that cannot be represented.
     const Type *getTypeForMVT() const;

     /// getMVT - Return the value type corresponding to the specified type.
     /// This returns all pointers as iPTR.  If HandleUnknown is true, unknown
     /// types are returned as Other, otherwise they are invalid.
     static MVT getMVT(const Type *Ty, bool HandleUnknown = false);

     /// getRawBits - Represent the type as a bunch of bits.
     uint32_t getRawBits() const { return V; }

     /// compareRawBits - A meaningless but well-behaved order, useful for
     /// constructing containers.
     struct compareRawBits {
       bool operator()(MVT L, MVT R) const {
         return L.getRawBits() < R.getRawBits();
       }
     };
   };

 } // End llvm namespace

 #endif
	//===- CodeGen/ValueTypes.h - Low-Level Target independ. types --- C++ --===//
	//
	// The LLVM Compiler Infrastructure
	//
	// This file is distributed under the University of Illinois Open Source
	// License. See LICENSE.TXT for details.
	//
	//===----------------------------------------------------------------------===//
	//
	// This file defines the set of low-level target independent types which various
	// values in the code generator are. This allows the target specific behavior
	// of instructions to be described to target independent passes.
	//
	//===----------------------------------------------------------------------===//

	#ifndef LLVM_CODEGEN_VALUETYPES_H
	#define LLVM_CODEGEN_VALUETYPES_H

	#include <cassert>
	#include <string>
	#include "llvm/Support/DataTypes.h"
	#include "llvm/Support/MathExtras.h"

	namespace llvm {
	class Type;

	struct MVT { // MVT = Machine Value Type
	public:

	enum SimpleValueType {
	// If you change this numbering, you must change the values in
	// ValueTypes.td as well!
	Other = 0, // This is a non-standard value
	i1 = 1, // This is a 1 bit integer value
	i8 = 2, // This is an 8 bit integer value
	i16 = 3, // This is a 16 bit integer value
	i32 = 4, // This is a 32 bit integer value
	i64 = 5, // This is a 64 bit integer value
	i128 = 6, // This is a 128 bit integer value

	FIRST_INTEGER_VALUETYPE = i1,
	LAST_INTEGER_VALUETYPE = i128,

	f32 = 7, // This is a 32 bit floating point value
	f64 = 8, // This is a 64 bit floating point value
	f80 = 9, // This is a 80 bit floating point value
	f128 = 10, // This is a 128 bit floating point value
	ppcf128 = 11, // This is a PPC 128-bit floating point value
	Flag = 12, // This is a condition code or machine flag.

	isVoid = 13, // This has no value

	v8i8 = 14, // 8 x i8
	v4i16 = 15, // 4 x i16
	v2i32 = 16, // 2 x i32
	v1i64 = 17, // 1 x i64
	v16i8 = 18, // 16 x i8
	v8i16 = 19, // 8 x i16
	v3i32 = 20, // 3 x i32
	v4i32 = 21, // 4 x i32
	v2i64 = 22, // 2 x i64

	v2f32 = 23, // 2 x f32
	v3f32 = 24, // 3 x f32
	v4f32 = 25, // 4 x f32
	v2f64 = 26, // 2 x f64

	FIRST_VECTOR_VALUETYPE = v8i8,
	LAST_VECTOR_VALUETYPE = v2f64,

	LAST_VALUETYPE = 27, // This always remains at the end of the list.

	// iPTRAny - An int value the size of the pointer of the current
	// target to any address space. This must only be used internal to
	// tblgen. Other than for overloading, we treat iPTRAny the same as iPTR.
	iPTRAny = 252,

	// fAny - Any floating-point or vector floating-point value. This is used
	// for intrinsics that have overloadings based on floating-point types.
	// This is only for tblgen's consumption!
	fAny = 253,

	// iAny - An integer or vector integer value of any bit width. This is
	// used for intrinsics that have overloadings based on integer bit widths.
	// This is only for tblgen's consumption!
	iAny = 254,

	// iPTR - An int value the size of the pointer of the current
	// target. This should only be used internal to tblgen!
	iPTR = 255
	};

	/// MVT - This type holds low-level value types. Valid values include any of
	/// the values in the SimpleValueType enum, or any value returned from one
	/// of the MVT methods. Any value type equal to one of the SimpleValueType
	/// enum values is a "simple" value type. All others are "extended".
	///
	/// Note that simple doesn't necessary mean legal for the target machine.
	/// All legal value types must be simple, but often there are some simple
	/// value types that are not legal.
	///
	/// @internal
	/// Extended types are either vector types or arbitrary precision integers.
	/// Arbitrary precision integers have iAny in the first SimpleTypeBits bits,
	/// and the bit-width in the next PrecisionBits bits, offset by minus one.
	/// Vector types are encoded by having the first
	/// SimpleTypeBits+PrecisionBits bits encode the vector element type
	/// (which must be a scalar type, possibly an arbitrary precision integer)
	/// and the remaining VectorBits upper bits encode the vector length, offset
	/// by one.
	///
	/// 32--------------16-----------8-------------0
	/// \| Vector length \| Precision \| Simple type \|
	/// \| \| Vector element \|
	///

	private:

	static const int SimpleTypeBits = 8;
	static const int PrecisionBits = 8;
	static const int VectorBits = 32 - SimpleTypeBits - PrecisionBits;

	static const uint32_t SimpleTypeMask =
	(~uint32_t(0) << (32 - SimpleTypeBits)) >> (32 - SimpleTypeBits);

	static const uint32_t PrecisionMask =
	((~uint32_t(0) << VectorBits) >> (32 - PrecisionBits)) << SimpleTypeBits;

	static const uint32_t VectorMask =
	(~uint32_t(0) >> (32 - VectorBits)) << (32 - VectorBits);

	static const uint32_t ElementMask =
	(~uint32_t(0) << VectorBits) >> VectorBits;

	uint32_t V;

	public:

	MVT() {}
	MVT(SimpleValueType S) : V(S) {}

	inline bool operator== (const MVT VT) const { return V == VT.V; }
	inline bool operator!= (const MVT VT) const { return V != VT.V; }

	/// getIntegerVT - Returns the MVT that represents an integer with the given
	/// number of bits.
	static inline MVT getIntegerVT(unsigned BitWidth) {
	switch (BitWidth) {
	default:
	break;
	case 1:
	return i1;
	case 8:
	return i8;
	case 16:
	return i16;
	case 32:
	return i32;
	case 64:
	return i64;
	case 128:
	return i128;
	}
	MVT VT;
	VT.V = iAny \| (((BitWidth - 1) << SimpleTypeBits) & PrecisionMask);
	assert(VT.getSizeInBits() == BitWidth && "Bad bit width!");
	return VT;
	}

	/// getVectorVT - Returns the MVT that represents a vector NumElements in
	/// length, where each element is of type VT.
	static inline MVT getVectorVT(MVT VT, unsigned NumElements) {
	switch (VT.V) {
	default:
	break;
	case i8:
	if (NumElements == 8) return v8i8;
	if (NumElements == 16) return v16i8;
	break;
	case i16:
	if (NumElements == 4) return v4i16;
	if (NumElements == 8) return v8i16;
	break;
	case i32:
	if (NumElements == 2) return v2i32;
	if (NumElements == 3) return v3i32;
	if (NumElements == 4) return v4i32;
	break;
	case i64:
	if (NumElements == 1) return v1i64;
	if (NumElements == 2) return v2i64;
	break;
	case f32:
	if (NumElements == 2) return v2f32;
	if (NumElements == 3) return v3f32;
	if (NumElements == 4) return v4f32;
	break;
	case f64:
	if (NumElements == 2) return v2f64;
	break;
	}
	MVT Result;
	Result.V = VT.V \| ((NumElements + 1) << (32 - VectorBits));
	assert(Result.getVectorElementType() == VT &&
	"Bad vector element type!");
	assert(Result.getVectorNumElements() == NumElements &&
	"Bad vector length!");
	return Result;
	}

	/// getIntVectorWithNumElements - Return any integer vector type that has
	/// the specified number of elements.
	static inline MVT getIntVectorWithNumElements(unsigned NumElts) {
	switch (NumElts) {
	default: return getVectorVT(i8, NumElts);
	case 1: return v1i64;
	case 2: return v2i32;
	case 3: return v3i32;
	case 4: return v4i16;
	case 8: return v8i8;
	case 16: return v16i8;
	}
	}


	/// isSimple - Test if the given MVT is simple (as opposed to being
	/// extended).
	inline bool isSimple() const {
	return V <= SimpleTypeMask;
	}

	/// isExtended - Test if the given MVT is extended (as opposed to
	/// being simple).
	inline bool isExtended() const {
	return !isSimple();
	}

	/// isFloatingPoint - Return true if this is a FP, or a vector FP type.
	inline bool isFloatingPoint() const {
	uint32_t SVT = V & SimpleTypeMask;
	return (SVT >= f32 && SVT <= ppcf128) \|\| (SVT >= v2f32 && SVT <= v2f64);
	}

	/// isInteger - Return true if this is an integer, or a vector integer type.
	inline bool isInteger() const {
	uint32_t SVT = V & SimpleTypeMask;
	return (SVT >= FIRST_INTEGER_VALUETYPE && SVT <= LAST_INTEGER_VALUETYPE) \|\|
	(SVT >= v8i8 && SVT <= v2i64) \|\| (SVT == iAny && (V & PrecisionMask));
	}

	/// isVector - Return true if this is a vector value type.
	inline bool isVector() const {
	return (V >= FIRST_VECTOR_VALUETYPE && V <= LAST_VECTOR_VALUETYPE) \|\|
	(V & VectorMask);
	}

	/// is64BitVector - Return true if this is a 64-bit vector type.
	inline bool is64BitVector() const {
	return (V==v8i8 \|\| V==v4i16 \|\| V==v2i32 \|\| V==v1i64 \|\| V==v2f32 \|\|
	(isExtended() && isVector() && getSizeInBits()==64));
	}

	/// is128BitVector - Return true if this is a 128-bit vector type.
	inline bool is128BitVector() const {
	return (V==v16i8 \|\| V==v8i16 \|\| V==v4i32 \|\| V==v2i64 \|\|
	V==v4f32 \|\| V==v2f64 \|\|
	(isExtended() && isVector() && getSizeInBits()==128));
	}

	/// isByteSized - Return true if the bit size is a multiple of 8.
	inline bool isByteSized() const {
	return (getSizeInBits() & 7) == 0;
	}

	/// isRound - Return true if the size is a power-of-two number of bytes.
	inline bool isRound() const {
	unsigned BitSize = getSizeInBits();
	return BitSize >= 8 && !(BitSize & (BitSize - 1));
	}

	/// bitsGT - Return true if this has more bits than VT.
	inline bool bitsGT(MVT VT) const {
	return getSizeInBits() > VT.getSizeInBits();
	}

	/// bitsGE - Return true if this has no less bits than VT.
	inline bool bitsGE(MVT VT) const {
	return getSizeInBits() >= VT.getSizeInBits();
	}

	/// bitsLT - Return true if this has less bits than VT.
	inline bool bitsLT(MVT VT) const {
	return getSizeInBits() < VT.getSizeInBits();
	}

	/// bitsLE - Return true if this has no more bits than VT.
	inline bool bitsLE(MVT VT) const {
	return getSizeInBits() <= VT.getSizeInBits();
	}


	/// getSimpleVT - Return the SimpleValueType held in the specified
	/// simple MVT.
	inline SimpleValueType getSimpleVT() const {
	assert(isSimple() && "Expected a SimpleValueType!");
	return (SimpleValueType)V;
	}

	/// getVectorElementType - Given a vector type, return the type of
	/// each element.
	inline MVT getVectorElementType() const {
	assert(isVector() && "Invalid vector type!");
	switch (V) {
	default: {
	assert(isExtended() && "Unknown simple vector type!");
	MVT VT;
	VT.V = V & ElementMask;
	return VT;
	}
	case v8i8 :
	case v16i8: return i8;
	case v4i16:
	case v8i16: return i16;
	case v2i32:
	case v3i32:
	case v4i32: return i32;
	case v1i64:
	case v2i64: return i64;
	case v2f32:
	case v3f32:
	case v4f32: return f32;
	case v2f64: return f64;
	}
	}

	/// getVectorNumElements - Given a vector type, return the number of
	/// elements it contains.
	inline unsigned getVectorNumElements() const {
	assert(isVector() && "Invalid vector type!");
	switch (V) {
	default:
	assert(isExtended() && "Unknown simple vector type!");
	return ((V & VectorMask) >> (32 - VectorBits)) - 1;
	case v16i8: return 16;
	case v8i8 :
	case v8i16: return 8;
	case v4i16:
	case v4i32:
	case v4f32: return 4;
	case v3i32:
	case v3f32: return 3;
	case v2i32:
	case v2i64:
	case v2f32:
	case v2f64: return 2;
	case v1i64: return 1;
	}
	}

	/// getSizeInBits - Return the size of the specified value type in bits.
	inline unsigned getSizeInBits() const {
	switch (V) {
	default:
	assert(isExtended() && "MVT has no known size!");
	if (isVector())
	return getVectorElementType().getSizeInBits()*getVectorNumElements();
	if (isInteger())
	return ((V & PrecisionMask) >> SimpleTypeBits) + 1;
	assert(false && "Unknown value type!");
	return 0;
	case i1 : return 1;
	case i8 : return 8;
	case i16 : return 16;
	case f32 :
	case i32 : return 32;
	case f64 :
	case i64 :
	case v8i8:
	case v4i16:
	case v2i32:
	case v1i64:
	case v2f32: return 64;
	case f80 : return 80;
	case v3i32:
	case v3f32: return 96;
	case f128:
	case ppcf128:
	case i128:
	case v16i8:
	case v8i16:
	case v4i32:
	case v2i64:
	case v4f32:
	case v2f64: return 128;
	}
	}

	/// getStoreSizeInBits - Return the number of bits overwritten by a store
	/// of the specified value type.
	inline unsigned getStoreSizeInBits() const {
	return (getSizeInBits() + 7)/8*8;
	}

	/// getRoundIntegerType - Rounds the bit-width of the given integer MVT up
	/// to the nearest power of two (and at least to eight), and returns the
	/// integer MVT with that number of bits.
	inline MVT getRoundIntegerType() const {
	assert(isInteger() && !isVector() && "Invalid integer type!");
	unsigned BitWidth = getSizeInBits();
	if (BitWidth <= 8)
	return i8;
	else
	return getIntegerVT(1 << Log2_32_Ceil(BitWidth));
	}

	/// getIntegerVTBitMask - Return an integer with 1's every place there are
	/// bits in the specified integer value type. FIXME: Should return an apint.
	inline uint64_t getIntegerVTBitMask() const {
	assert(isInteger() && !isVector() && "Only applies to int scalars!");
	return ~uint64_t(0UL) >> (64-getSizeInBits());
	}

	/// getIntegerVTSignBit - Return an integer with a 1 in the position of the
	/// sign bit for the specified integer value type. FIXME: Should return an
	/// apint.
	inline uint64_t getIntegerVTSignBit() const {
	assert(isInteger() && !isVector() && "Only applies to int scalars!");
	return uint64_t(1UL) << (getSizeInBits()-1);
	}

	/// getMVTString - This function returns value type as a string,
	/// e.g. "i32".
	std::string getMVTString() const;

	/// getTypeForMVT - This method returns an LLVM type corresponding to the
	/// specified MVT. For integer types, this returns an unsigned type. Note
	/// that this will abort for types that cannot be represented.
	const Type *getTypeForMVT() const;

	/// getMVT - Return the value type corresponding to the specified type.
	/// This returns all pointers as iPTR. If HandleUnknown is true, unknown
	/// types are returned as Other, otherwise they are invalid.
	static MVT getMVT(const Type *Ty, bool HandleUnknown = false);

	/// getRawBits - Represent the type as a bunch of bits.
	uint32_t getRawBits() const { return V; }

	/// compareRawBits - A meaningless but well-behaved order, useful for
	/// constructing containers.
	struct compareRawBits {
	bool operator()(MVT L, MVT R) const {
	return L.getRawBits() < R.getRawBits();
	}
	};
	};

	} // End llvm namespace

	#endif