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
24 /// MVT namespace - This namespace defines the ValueType enum, which contains
25 /// the various low-level value types.
27 namespace MVT { // MVT = Machine Value Types
29 // If you change this numbering, you must change the values in Target.td as
31 Other = 0, // This is a non-standard value
32 i1 = 1, // This is a 1 bit integer value
33 i8 = 2, // This is an 8 bit integer value
34 i16 = 3, // This is a 16 bit integer value
35 i32 = 4, // This is a 32 bit integer value
36 i64 = 5, // This is a 64 bit integer value
37 i128 = 6, // This is a 128 bit integer value
39 f32 = 7, // This is a 32 bit floating point value
40 f64 = 8, // This is a 64 bit floating point value
41 f80 = 9, // This is a 80 bit floating point value
42 f128 = 10, // This is a 128 bit floating point value
43 Flag = 11, // This is a condition code or machine flag.
45 isVoid = 12, // This has no value
47 Vector = 13, // This is an abstract vector type, which will
48 // be expanded into a target vector type, or scalars
49 // if no matching vector type is available.
50 v16i8 = 14, // 16 x i8
51 v8i16 = 15, // 8 x i16
52 v4i32 = 16, // 4 x i32
53 v2i64 = 17, // 2 x i64
55 v4f32 = 18, // 4 x f32
56 v2f64 = 19, // 2 x f64
58 LAST_VALUETYPE, // This always remains at the end of the list.
61 static inline bool isInteger(ValueType VT) {
62 return (VT >= i1 && VT <= i128) || (VT >= v16i8 && VT <= v2i64);
64 static inline bool isFloatingPoint(ValueType VT) {
65 return (VT >= f32 && VT <= f128) || (VT >= v4f32 && VT <= v2f64);
67 static inline bool isVector(ValueType VT) {
68 return (VT >= v16i8 && VT <= v2f64);
71 /// getVectorType - Returns the ValueType that represents a vector NumElements
72 /// in length, where each element is of type VT. If there is no ValueType
73 /// that represents this vector, a ValueType of Other is returned.
75 static inline ValueType getVectorType(ValueType VT, unsigned NumElements) {
80 if (NumElements == 4) return MVT::v4i32;
83 if (NumElements == 4) return MVT::v4f32;
89 static inline unsigned getSizeInBits(ValueType VT) {
91 default: assert(0 && "ValueType has no known size!");
92 case MVT::i1 : return 1;
93 case MVT::i8 : return 8;
94 case MVT::i16 : return 16;
96 case MVT::i32 : return 32;
98 case MVT::i64 : return 64;
99 case MVT::f80 : return 80;
107 case MVT::v2f64: return 128;
111 /// MVT::getValueTypeString - This function returns value type as a string,
113 const char *getValueTypeString(ValueType VT);
115 /// MVT::getTypeForValueType - This method returns an LLVM type corresponding
116 /// to the specified ValueType. For integer types, this returns an unsigned
117 /// type. Note that this will abort for types that cannot be represented.
118 const Type *getTypeForValueType(ValueType VT);
121 } // End llvm namespace