X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FCodeGen%2FValueTypes.h;h=f2b8dfcccaddaccd0c23a9c5b233b3a8e9ebda0b;hb=1612faae3cf7ecfaddba64f7064f0ce4b32dd471;hp=4ddacba3191d4e296af9a6ae4081af50d3a8be40;hpb=6994040a952e5fb27605eb3cf29ed86c4e59cf62;p=oota-llvm.git diff --git a/include/llvm/CodeGen/ValueTypes.h b/include/llvm/CodeGen/ValueTypes.h index 4ddacba3191..f2b8dfcccad 100644 --- a/include/llvm/CodeGen/ValueTypes.h +++ b/include/llvm/CodeGen/ValueTypes.h @@ -2,8 +2,8 @@ // // 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. // //===----------------------------------------------------------------------===// // @@ -19,6 +19,7 @@ #include #include #include "llvm/Support/DataTypes.h" +#include "llvm/Support/MathExtras.h" namespace llvm { class Type; @@ -38,6 +39,9 @@ namespace MVT { // MVT = Machine Value Types 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 @@ -46,31 +50,36 @@ namespace MVT { // MVT = Machine Value Types 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 + 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 + 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, + iAny = 254, // iPTR - An int value the size of the pointer of the current // target. This should only be used internal to tblgen! @@ -88,17 +97,38 @@ namespace MVT { // MVT = Machine Value Types /// value types that are not legal. /// /// @internal - /// Currently extended types are always vector types. Extended types are - /// encoded by having the first SimpleTypeBits bits encode the vector - /// element type (which must be a scalar type) and the remaining upper - /// bits encode the vector length, offset by one. + /// 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) { @@ -109,33 +139,34 @@ namespace MVT { // MVT = Machine Value Types /// type. static inline bool isInteger(ValueType VT) { ValueType SVT = VT & SimpleTypeMask; - return (SVT >= i1 && SVT <= i128) || (SVT >= v8i8 && SVT <= v2i64); + 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) || - isExtendedVT(VT); + (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: - if (isExtendedVT(VT)) - return VT & SimpleTypeMask; - assert(0 && "Invalid vector type!"); + assert(isExtendedVT(VT) && "Unknown simple vector type!"); + return VT & ElementMask; case v8i8 : case v16i8: return i8; case v4i16: - case v8i16: return i16; + case v8i16: return i16; case v2i32: case v3i32: case v4i32: return i32; @@ -147,20 +178,20 @@ namespace MVT { // MVT = Machine Value Types 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: - if (isExtendedVT(VT)) - return ((VT & ~SimpleTypeMask) >> SimpleTypeBits) - 1; - assert(0 && "Invalid vector type!"); + 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 v4i32: case v4f32: return 4; case v3i32: case v3f32: return 3; @@ -171,17 +202,20 @@ namespace MVT { // MVT = Machine Value Types 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: - if (isExtendedVT(VT)) + assert(isExtendedVT(VT) && "ValueType has no known size!"); + if (isVector(VT)) return getSizeInBits(getVectorElementType(VT)) * getVectorNumElements(VT); - assert(0 && "ValueType has no known size!"); + 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; @@ -191,7 +225,7 @@ namespace MVT { // MVT = Machine Value Types case MVT::i64 : case MVT::v8i8: case MVT::v4i16: - case MVT::v2i32: + case MVT::v2i32: case MVT::v1i64: case MVT::v2f32: return 64; case MVT::f80 : return 80; @@ -199,7 +233,7 @@ namespace MVT { // MVT = Machine Value Types case MVT::v3f32: return 96; case MVT::f128: case MVT::ppcf128: - case MVT::i128: + case MVT::i128: case MVT::v16i8: case MVT::v8i16: case MVT::v4i32: @@ -208,7 +242,53 @@ namespace MVT { // MVT = Machine Value Types 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. /// @@ -242,7 +322,8 @@ namespace MVT { // MVT = Machine Value Types if (NumElements == 2) return MVT::v2f64; break; } - ValueType Result = VT | ((NumElements + 1) << SimpleTypeBits); + // 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 && @@ -263,8 +344,8 @@ namespace MVT { // MVT = Machine Value Types 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) { @@ -286,7 +367,7 @@ namespace MVT { // MVT = Machine Value Types /// 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.