#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.
+/// MVT namespace - This namespace defines the SimpleValueType enum, which
+/// contains the various low-level value types, and the ValueType typedef.
///
namespace MVT { // MVT = Machine Value Types
- enum ValueType {
- // If you change this numbering, you must change the values in Target.td as
+ 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
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
- Flag = 11, // This is a condition code or machine flag.
+ 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.
- isVoid = 12, // This has no value
-
- Vector = 13, // This is an abstract vector type, which will
- // be refined into a target vector type, or
- // scalarized.
+ // 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,
- LAST_VALUETYPE, // This always remains at the end of the list.
+ // 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::ValueType - This type holds low-level value types. Valid values
+ /// include any of the values in the SimpleValueType enum, or any value
+ /// returned from a function in the MVT namespace that has a ValueType
+ /// return type. Any value type equal to one of the SimpleValueType enum
+ /// values is a "simple" value type. All other value types 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.
+ ///
+ /// 31--------------16-----------8-------------0
+ /// | Vector length | Precision | Simple type |
+ /// | | Vector element |
+ ///
+ /// Note that the verifier currently requires the top bit to be zero.
+
+ typedef uint32_t ValueType;
+
+ 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;
+
+ /// MVT::isExtendedVT - Test if the given ValueType is extended
+ /// (as opposed to being simple).
+ static inline bool isExtendedVT(ValueType VT) {
+ return VT > SimpleTypeMask;
+ }
+
+ /// MVT::isInteger - Return true if this is an integer, or a vector integer
+ /// type.
static inline bool isInteger(ValueType VT) {
- return VT >= i1 && VT <= i128;
+ ValueType SVT = VT & SimpleTypeMask;
+ return (SVT >= FIRST_INTEGER_VALUETYPE && SVT <= LAST_INTEGER_VALUETYPE) ||
+ (SVT >= v8i8 && SVT <= v2i64) || (SVT == iAny && (VT & PrecisionMask));
}
+
+ /// MVT::isFloatingPoint - Return true if this is an FP, or a vector FP type.
static inline bool isFloatingPoint(ValueType VT) {
- return VT >= f32 && VT <= f128;
+ ValueType SVT = VT & SimpleTypeMask;
+ return (SVT >= f32 && SVT <= ppcf128) || (SVT >= v2f32 && SVT <= v2f64);
+ }
+
+ /// MVT::isVector - Return true if this is a vector value type.
+ static inline bool isVector(ValueType VT) {
+ return (VT >= FIRST_VECTOR_VALUETYPE && VT <= LAST_VECTOR_VALUETYPE) ||
+ (VT & VectorMask);
+ }
+
+ /// MVT::getVectorElementType - Given a vector type, return the type of
+ /// each element.
+ static inline ValueType getVectorElementType(ValueType VT) {
+ assert(isVector(VT) && "Invalid vector type!");
+ switch (VT) {
+ default:
+ assert(isExtendedVT(VT) && "Unknown simple vector type!");
+ return VT & ElementMask;
+ 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;
+ }
+ }
+
+ /// MVT::getVectorNumElements - Given a vector type, return the
+ /// number of elements it contains.
+ static inline unsigned getVectorNumElements(ValueType VT) {
+ assert(isVector(VT) && "Invalid vector type!");
+ switch (VT) {
+ default:
+ assert(isExtendedVT(VT) && "Unknown simple vector type!");
+ return ((VT & 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;
+ }
}
+ /// MVT::getSizeInBits - Return the size of the specified value type
+ /// in bits.
+ ///
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;
+ default:
+ assert(isExtendedVT(VT) && "ValueType has no known size!");
+ if (isVector(VT))
+ return getSizeInBits(getVectorElementType(VT)) *
+ getVectorNumElements(VT);
+ if (isInteger(VT))
+ return ((VT & PrecisionMask) >> SimpleTypeBits) + 1;
+ assert(0 && "Unknown value type!");
+ 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::i32 : return 32;
case MVT::f64 :
- case MVT::i64 : return 64;
- case MVT::f80 : return 80;
+ case MVT::i64 :
+ case MVT::v8i8:
+ case MVT::v4i16:
+ case MVT::v2i32:
+ case MVT::v1i64:
+ case MVT::v2f32: return 64;
+ case MVT::f80 : return 80;
+ case MVT::v3i32:
+ case MVT::v3f32: return 96;
case MVT::f128:
- case MVT::i128: return 128;
+ case MVT::ppcf128:
+ case MVT::i128:
+ case MVT::v16i8:
+ case MVT::v8i16:
+ case MVT::v4i32:
+ case MVT::v2i64:
+ case MVT::v4f32:
+ case MVT::v2f64: return 128;
+ }
+ }
+
+ /// MVT::getIntegerType - Returns the ValueType that represents an integer
+ /// with the given number of bits.
+ ///
+ static inline ValueType getIntegerType(unsigned BitWidth) {
+ switch (BitWidth) {
+ default:
+ break;
+ case 1:
+ return MVT::i1;
+ case 8:
+ return MVT::i8;
+ case 16:
+ return MVT::i16;
+ case 32:
+ return MVT::i32;
+ case 64:
+ return MVT::i64;
+ case 128:
+ return MVT::i128;
+ }
+ ValueType Result = iAny |
+ (((BitWidth - 1) << SimpleTypeBits) & PrecisionMask);
+ assert(getSizeInBits(Result) == BitWidth && "Bad bit width!");
+ return Result;
+ }
+
+ /// MVT::RoundIntegerType - Rounds the bit-width of the given integer
+ /// ValueType up to the nearest power of two (and at least to eight),
+ /// and returns the integer ValueType with that number of bits.
+ ///
+ static inline ValueType RoundIntegerType(ValueType VT) {
+ assert(isInteger(VT) && !isVector(VT) && "Invalid integer type!");
+ unsigned BitWidth = getSizeInBits(VT);
+ if (BitWidth <= 8)
+ return MVT::i8;
+ else
+ return getIntegerType(1 << Log2_32_Ceil(BitWidth));
+ }
+
+ /// MVT::getVectorType - Returns the ValueType that represents a vector
+ /// NumElements in length, where each element is of type VT.
+ ///
+ 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 == 3) return MVT::v3i32;
+ if (NumElements == 4) return MVT::v4i32;
+ break;
+ case MVT::i64:
+ if (NumElements == 1) return MVT::v1i64;
+ if (NumElements == 2) return MVT::v2i64;
+ break;
+ case MVT::f32:
+ if (NumElements == 2) return MVT::v2f32;
+ if (NumElements == 3) return MVT::v3f32;
+ if (NumElements == 4) return MVT::v4f32;
+ break;
+ case MVT::f64:
+ if (NumElements == 2) return MVT::v2f64;
+ break;
+ }
+ // Set the length with the top bit forced to zero (needed by the verifier).
+ ValueType Result = VT | (((NumElements + 1) << (33 - VectorBits)) >> 1);
+ assert(getVectorElementType(Result) == VT &&
+ "Bad vector element type!");
+ assert(getVectorNumElements(Result) == NumElements &&
+ "Bad vector length!");
+ return Result;
+ }
+
+ /// MVT::getIntVectorWithNumElements - Return any integer vector type that has
+ /// the specified number of elements.
+ static inline ValueType getIntVectorWithNumElements(unsigned NumElts) {
+ switch (NumElts) {
+ default: return getVectorType(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;
}
}
+
+ /// MVT::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 ~uint64_t(0UL) >> (64-getSizeInBits(VT));
+ }
+ /// MVT::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 uint64_t(1UL) << (getSizeInBits(VT)-1);
+ }
+
/// MVT::getValueTypeString - This function returns value type as a string,
/// e.g. "i32".
- const char *getValueTypeString(ValueType VT);
+ std::string 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);
-};
+
+ /// MVT::getValueType - Return the value type corresponding to the specified
+ /// type. This returns all pointers as MVT::iPTR. If HandleUnknown is true,
+ /// unknown types are returned as Other, otherwise they are invalid.
+ ValueType getValueType(const Type *Ty, bool HandleUnknown = false);
+}
} // End llvm namespace
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