| //===- 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 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 "llvm/Support/DataTypes.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 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 |
| |
| 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 |
| v1i64 = 17, // 1 x i64 |
| v16i8 = 18, // 16 x i8 |
| v8i16 = 19, // 8 x i16 |
| v4i32 = 20, // 4 x i32 |
| v2i64 = 21, // 2 x i64 |
| |
| v2f32 = 22, // 2 x f32 |
| v4f32 = 23, // 4 x f32 |
| v2f64 = 24, // 2 x f64 |
| FIRST_VECTOR_VALUETYPE = v8i8, |
| LAST_VECTOR_VALUETYPE = v2f64, |
| |
| LAST_VALUETYPE = 25, // This always remains at the end of the list. |
| |
| // iAny - An 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::isInteger - Return true if this is a simple integer, or a packed |
| /// vector integer type. |
| static inline bool isInteger(ValueType VT) { |
| return (VT >= i1 && VT <= i128) || (VT >= v8i8 && VT <= v2i64); |
| } |
| |
| /// MVT::isFloatingPoint - Return true if this is a simple FP, or a packed |
| /// vector FP type. |
| static inline bool isFloatingPoint(ValueType VT) { |
| return (VT >= f32 && VT <= f128) || (VT >= v2f32 && VT <= v2f64); |
| } |
| |
| /// MVT::isVector - Return true if this is a packed vector type (i.e. not |
| /// MVT::Vector). |
| static inline bool isVector(ValueType VT) { |
| return VT >= FIRST_VECTOR_VALUETYPE && VT <= LAST_VECTOR_VALUETYPE; |
| } |
| |
| /// 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; |
| 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::f128: |
| case MVT::i128: |
| case MVT::v16i8: |
| case MVT::v8i16: |
| case MVT::v4i32: |
| case MVT::v2i64: |
| case MVT::v4f32: |
| case MVT::v2f64: return 128; |
| } |
| } |
| |
| /// MVT::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. |
| /// |
| ValueType getVectorType(ValueType VT, unsigned NumElements); |
| |
| /// MVT::getVectorBaseType - Given a packed vector type, return the type of |
| /// each element. |
| static inline ValueType getVectorBaseType(ValueType VT) { |
| switch (VT) { |
| default: assert(0 && "Invalid vector type!"); |
| case v8i8 : |
| case v16i8: return i8; |
| case v4i16: |
| case v8i16: return i16; |
| case v2i32: |
| case v4i32: return i32; |
| case v1i64: |
| case v2i64: return i64; |
| case v2f32: |
| case v4f32: return f32; |
| case v2f64: return f64; |
| } |
| } |
| |
| /// MVT::getVectorNumElements - Given a packed vector type, return the number |
| /// of elements it contains. |
| static inline unsigned getVectorNumElements(ValueType VT) { |
| switch (VT) { |
| default: assert(0 && "Invalid vector type!"); |
| case v16i8: return 16; |
| case v8i8 : |
| case v8i16: return 8; |
| case v4i16: |
| case v4i32: |
| case v4f32: return 4; |
| case v2i32: |
| case v2i64: |
| case v2f32: |
| case v2f64: return 2; |
| case v1i64: return 1; |
| } |
| } |
| |
| /// MVT::getIntVectorWithNumElements - Return any integer vector type that has |
| /// the specified number of elements. |
| static inline ValueType getIntVectorWithNumElements(unsigned NumElts) { |
| switch (NumElts) { |
| default: assert(0 && "Invalid vector type!"); |
| case 1: return v1i64; |
| case 2: return v2i32; |
| 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); |
| |
| /// 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 vectors as MVT::Vector and 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 |
| |
| #endif |
