X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FCodeGen%2FValueTypes.h;h=f2b8dfcccaddaccd0c23a9c5b233b3a8e9ebda0b;hb=1612faae3cf7ecfaddba64f7064f0ce4b32dd471;hp=b523b71a14be030a01167bbf8ae8d35d311dda8a;hpb=d0fde30ce850b78371fd1386338350591f9ff494;p=oota-llvm.git diff --git a/include/llvm/CodeGen/ValueTypes.h b/include/llvm/CodeGen/ValueTypes.h index b523b71a14b..f2b8dfcccad 100644 --- a/include/llvm/CodeGen/ValueTypes.h +++ b/include/llvm/CodeGen/ValueTypes.h @@ -1,10 +1,10 @@ //===- CodeGen/ValueTypes.h - Low-Level Target independ. types --*- C++ -*-===// -// +// // 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. +// //===----------------------------------------------------------------------===// // // This file defines the set of low-level target independent types which various @@ -16,14 +16,20 @@ #ifndef LLVM_CODEGEN_VALUETYPES_H #define LLVM_CODEGEN_VALUETYPES_H +#include +#include +#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 @@ -33,14 +39,340 @@ namespace MVT { // MVT = Machine Value Types 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 + 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. - isVoid = 11, // This has no value + // 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::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) { + 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) { + 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(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::f64 : + 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::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::getStoreSizeInBits - Return the number of bits overwritten by a + /// store of the specified value type. + /// + static inline unsigned getStoreSizeInBits(ValueType VT) { + return (getSizeInBits(VT) + 7)/8*8; + } + + /// 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". + 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