1 //===- CodeGen/ValueTypes.h - Low-Level Target independ. types --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the set of low-level target independent types which various
11 // values in the code generator are. This allows the target specific behavior
12 // of instructions to be described to target independent passes.
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_CODEGEN_VALUETYPES_H
17 #define LLVM_CODEGEN_VALUETYPES_H
20 #include "llvm/Support/DataTypes.h"
25 /// MVT namespace - This namespace defines the ValueType enum, which contains
26 /// the various low-level value types.
28 namespace MVT { // MVT = Machine Value Types
30 // If you change this numbering, you must change the values in Target.td as
32 Other = 0, // This is a non-standard value
33 i1 = 1, // This is a 1 bit integer value
34 i8 = 2, // This is an 8 bit integer value
35 i16 = 3, // This is a 16 bit integer value
36 i32 = 4, // This is a 32 bit integer value
37 i64 = 5, // This is a 64 bit integer value
38 i128 = 6, // This is a 128 bit integer value
40 f32 = 7, // This is a 32 bit floating point value
41 f64 = 8, // This is a 64 bit floating point value
42 f80 = 9, // This is a 80 bit floating point value
43 f128 = 10, // This is a 128 bit floating point value
44 Flag = 11, // This is a condition code or machine flag.
46 isVoid = 12, // This has no value
48 Vector = 13, // This is an abstract vector type, which will
49 // be expanded into a target vector type, or scalars
50 // if no matching vector type is available.
52 v4i16 = 15, // 4 x i16
53 v2i32 = 16, // 2 x i32
54 v16i8 = 17, // 16 x i8
55 v8i16 = 18, // 8 x i16
56 v4i32 = 19, // 4 x i32
57 v2i64 = 20, // 2 x i64
59 v4f32 = 21, // 4 x f32
60 v2f64 = 22, // 2 x f64
62 LAST_VALUETYPE, // This always remains at the end of the list.
65 static inline bool isInteger(ValueType VT) {
66 return (VT >= i1 && VT <= i128) || (VT >= v16i8 && VT <= v2i64);
68 static inline bool isFloatingPoint(ValueType VT) {
69 return (VT >= f32 && VT <= f128) || (VT >= v4f32 && VT <= v2f64);
71 static inline bool isVector(ValueType VT) {
72 return (VT >= v16i8 && VT <= v2f64);
75 /// getVectorType - Returns the ValueType that represents a vector NumElements
76 /// in length, where each element is of type VT. If there is no ValueType
77 /// that represents this vector, a ValueType of Other is returned.
79 static inline ValueType getVectorType(ValueType VT, unsigned NumElements) {
84 if (NumElements == 4) return MVT::v4i32;
87 if (NumElements == 4) return MVT::v4f32;
93 static inline unsigned getSizeInBits(ValueType VT) {
95 default: assert(0 && "ValueType has no known size!");
96 case MVT::i1 : return 1;
97 case MVT::i8 : return 8;
98 case MVT::i16 : return 16;
100 case MVT::i32 : return 32;
105 case MVT::v2i32:return 64;
106 case MVT::f80 : return 80;
114 case MVT::v2f64: return 128;
118 /// getIntVTBitMask - Return an integer with 1's every place there are bits
119 /// in the specified integer value type.
120 static inline uint64_t getIntVTBitMask(ValueType VT) {
121 assert(isInteger(VT) && !isVector(VT) && "Only applies to int scalars!");
122 return ~0ULL >> (64-getSizeInBits(VT));
124 /// getIntVTSignBit - Return an integer with a 1 in the position of the sign
125 /// bit for the specified integer value type.
126 static inline uint64_t getIntVTSignBit(ValueType VT) {
127 assert(isInteger(VT) && !isVector(VT) && "Only applies to int scalars!");
128 return 1ULL << (getSizeInBits(VT)-1);
131 /// MVT::getValueTypeString - This function returns value type as a string,
133 const char *getValueTypeString(ValueType VT);
135 /// MVT::getTypeForValueType - This method returns an LLVM type corresponding
136 /// to the specified ValueType. For integer types, this returns an unsigned
137 /// type. Note that this will abort for types that cannot be represented.
138 const Type *getTypeForValueType(ValueType VT);
141 } // End llvm namespace