//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#define LLVM_CODEGEN_VALUETYPES_H
#include <cassert>
+#include <string>
#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/MathExtras.h"
namespace llvm {
class Type;
-/// MVT namespace - This namespace defines the ValueType enum, which contains
-/// the various low-level value types.
-///
-namespace MVT { // MVT = Machine Value Types
- enum ValueType {
- // If you change this numbering, you must change the values in Target.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
-
- 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
- Flag = 11, // This is a condition code or machine flag.
-
- isVoid = 12, // This has no value
-
- Vector = 13, // This is an abstract vector type, which will
- // be expanded into a target vector type, or scalars
- // if no matching vector type is available.
- v8i8 = 14, // 8 x i8
- v4i16 = 15, // 4 x i16
- v2i32 = 16, // 2 x i32
- v16i8 = 17, // 16 x i8
- v8i16 = 18, // 8 x i16
- v4i32 = 19, // 4 x i32
- v2i64 = 20, // 2 x i64
-
- v2f32 = 21, // 2 x f32
- v4f32 = 22, // 4 x f32
- v2f64 = 23, // 2 x f64
-
- LAST_VALUETYPE // This always remains at the end of the list.
- };
+ struct MVT { // MVT = Machine Value Type
+ public:
+
+ enum SimpleValueType {
+ // If you change this numbering, you must change the values in
+ // ValueTypes.td 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.
+
+ // 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;
+ }
- static inline bool isInteger(ValueType VT) {
- return (VT >= i1 && VT <= i128) || (VT >= v8i8 && VT <= v2i64);
- }
- static inline bool isFloatingPoint(ValueType VT) {
- return (VT >= f32 && VT <= f128) || (VT >= v4f32 && VT <= v2f64);
- }
- static inline bool isVector(ValueType VT) {
- return (VT >= v8i8 && VT <= v2f64);
- }
-
- /// getVectorType - Returns the ValueType that represents a vector NumElements
- /// in length, where each element is of type VT. If there is no ValueType
- /// that represents this vector, a ValueType of Other is returned.
- ///
- static inline ValueType getVectorType(ValueType VT, unsigned NumElements) {
- switch (VT) {
- default:
- break;
- case MVT::i8:
- if (NumElements == 8) return MVT::v8i8;
- if (NumElements == 16) return MVT::v16i8;
- break;
- case MVT::i16:
- if (NumElements == 4) return MVT::v4i16;
- if (NumElements == 8) return MVT::v8i16;
- break;
- case MVT::i32:
- if (NumElements == 2) return MVT::v2i32;
- if (NumElements == 4) return MVT::v4i32;
- break;
- case MVT::f32:
- if (NumElements == 2) return MVT::v2f32;
- if (NumElements == 4) return MVT::v4f32;
- break;
- case MVT::f64:
- if (NumElements == 2) return MVT::v2f64;
- break;
- }
- return MVT::Other;
- }
-
- static inline unsigned getSizeInBits(ValueType VT) {
- switch (VT) {
- default: assert(0 && "ValueType has no known size!");
- case MVT::i1 : return 1;
- case MVT::i8 : return 8;
- case MVT::i16 : return 16;
- case MVT::f32 :
- case MVT::i32 : return 32;
- case MVT::f64 :
- case MVT::i64 :
- case MVT::v8i8:
- case MVT::v4i16:
- case MVT::v2i32:
- case MVT::v2f32: return 64;
- case MVT::f80 : return 80;
- case MVT::f128:
- case MVT::i128:
- case MVT::v16i8:
- case MVT::v8i16:
- case MVT::v4i32:
- case MVT::v2i64:
- case MVT::v4f32:
- case MVT::v2f64: return 128;
- }
- }
-
- /// getIntVTBitMask - Return an integer with 1's every place there are bits
- /// in the specified integer value type.
- static inline uint64_t getIntVTBitMask(ValueType VT) {
- assert(isInteger(VT) && !isVector(VT) && "Only applies to int scalars!");
- return ~0ULL >> (64-getSizeInBits(VT));
- }
- /// getIntVTSignBit - Return an integer with a 1 in the position of the sign
- /// bit for the specified integer value type.
- static inline uint64_t getIntVTSignBit(ValueType VT) {
- assert(isInteger(VT) && !isVector(VT) && "Only applies to int scalars!");
- return 1ULL << (getSizeInBits(VT)-1);
- }
-
- /// MVT::getValueTypeString - This function returns value type as a string,
- /// e.g. "i32".
- const char *getValueTypeString(ValueType VT);
-
- /// MVT::getTypeForValueType - This method returns an LLVM type corresponding
- /// to the specified ValueType. For integer types, this returns an unsigned
- /// type. Note that this will abort for types that cannot be represented.
- const Type *getTypeForValueType(ValueType VT);
-}
+ /// 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
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