1 //===- CodeGen/MachineValueType.h - Machine-Level types ---------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file defines the set of machine-level target independent types which
11 // legal values in the code generator use.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_CODEGEN_MACHINEVALUETYPE_H
16 #define LLVM_CODEGEN_MACHINEVALUETYPE_H
17 
18 #include "llvm/ADT/iterator_range.h"
19 #include "llvm/Support/ErrorHandling.h"
20 #include "llvm/Support/MathExtras.h"
21 
22 namespace llvm {
23 
24   class Type;
25 
26   /// MVT - Machine Value Type. Every type that is supported natively by some
27   /// processor targeted by LLVM occurs here. This means that any legal value
28   /// type can be represented by an MVT.
29 class MVT {
30   public:
31     enum SimpleValueType {
32       // INVALID_SIMPLE_VALUE_TYPE - Simple value types less than zero are
33       // considered extended value types.
34       INVALID_SIMPLE_VALUE_TYPE = -1,
35 
36       // If you change this numbering, you must change the values in
37       // ValueTypes.td as well!
38       Other          =   0,   // This is a non-standard value
39       i1             =   1,   // This is a 1 bit integer value
40       i8             =   2,   // This is an 8 bit integer value
41       i16            =   3,   // This is a 16 bit integer value
42       i32            =   4,   // This is a 32 bit integer value
43       i64            =   5,   // This is a 64 bit integer value
44       i128           =   6,   // This is a 128 bit integer value
45 
46       FIRST_INTEGER_VALUETYPE = i1,
47       LAST_INTEGER_VALUETYPE  = i128,
48 
49       f16            =   7,   // This is a 16 bit floating point value
50       f32            =   8,   // This is a 32 bit floating point value
51       f64            =   9,   // This is a 64 bit floating point value
52       f80            =  10,   // This is a 80 bit floating point value
53       f128           =  11,   // This is a 128 bit floating point value
54       ppcf128        =  12,   // This is a PPC 128-bit floating point value
55 
56       FIRST_FP_VALUETYPE = f16,
57       LAST_FP_VALUETYPE  = ppcf128,
58 
59       v2i1           =  13,   //    2 x i1
60       v4i1           =  14,   //    4 x i1
61       v8i1           =  15,   //    8 x i1
62       v16i1          =  16,   //   16 x i1
63       v32i1          =  17,   //   32 x i1
64       v64i1          =  18,   //   64 x i1
65       v512i1         =  19,   //  512 x i1
66       v1024i1        =  20,   // 1024 x i1
67 
68       v1i8           =  21,   //  1 x i8
69       v2i8           =  22,   //  2 x i8
70       v4i8           =  23,   //  4 x i8
71       v8i8           =  24,   //  8 x i8
72       v16i8          =  25,   // 16 x i8
73       v32i8          =  26,   // 32 x i8
74       v64i8          =  27,   // 64 x i8
75       v128i8         =  28,   //128 x i8
76       v256i8         =  29,   //256 x i8
77 
78       v1i16          =  30,   //  1 x i16
79       v2i16          =  31,   //  2 x i16
80       v4i16          =  32,   //  4 x i16
81       v8i16          =  33,   //  8 x i16
82       v16i16         =  34,   // 16 x i16
83       v32i16         =  35,   // 32 x i16
84       v64i16         =  36,   // 64 x i16
85       v128i16        =  37,   //128 x i16
86 
87       v1i32          =  38,   //  1 x i32
88       v2i32          =  39,   //  2 x i32
89       v4i32          =  40,   //  4 x i32
90       v8i32          =  41,   //  8 x i32
91       v16i32         =  42,   // 16 x i32
92       v32i32         =  43,   // 32 x i32
93       v64i32         =  44,   // 64 x i32
94 
95       v1i64          =  45,   //  1 x i64
96       v2i64          =  46,   //  2 x i64
97       v4i64          =  47,   //  4 x i64
98       v8i64          =  48,   //  8 x i64
99       v16i64         =  49,   // 16 x i64
100       v32i64         =  50,   // 32 x i64
101 
102       v1i128         =  51,   //  1 x i128
103 
104       FIRST_INTEGER_VECTOR_VALUETYPE = v2i1,
105       LAST_INTEGER_VECTOR_VALUETYPE = v1i128,
106 
107       v2f16          =  52,   //  2 x f16
108       v4f16          =  53,   //  4 x f16
109       v8f16          =  54,   //  8 x f16
110       v1f32          =  55,   //  1 x f32
111       v2f32          =  56,   //  2 x f32
112       v4f32          =  57,   //  4 x f32
113       v8f32          =  58,   //  8 x f32
114       v16f32         =  59,   // 16 x f32
115       v1f64          =  60,   //  1 x f64
116       v2f64          =  61,   //  2 x f64
117       v4f64          =  62,   //  4 x f64
118       v8f64          =  63,   //  8 x f64
119 
120       FIRST_FP_VECTOR_VALUETYPE = v2f16,
121       LAST_FP_VECTOR_VALUETYPE = v8f64,
122 
123       FIRST_VECTOR_VALUETYPE = v2i1,
124       LAST_VECTOR_VALUETYPE  = v8f64,
125 
126       x86mmx         =  64,   // This is an X86 MMX value
127 
128       Glue           =  65,   // This glues nodes together during pre-RA sched
129 
130       isVoid         =  66,   // This has no value
131 
132       Untyped        =  67,   // This value takes a register, but has
133                               // unspecified type.  The register class
134                               // will be determined by the opcode.
135 
136       FIRST_VALUETYPE = 0,    // This is always the beginning of the list.
137       LAST_VALUETYPE =  68,   // This always remains at the end of the list.
138 
139       // This is the current maximum for LAST_VALUETYPE.
140       // MVT::MAX_ALLOWED_VALUETYPE is used for asserts and to size bit vectors
141       // This value must be a multiple of 32.
142       MAX_ALLOWED_VALUETYPE = 96,
143 
144       // Token - A value of type llvm::TokenTy
145       token          = 249,
146 
147       // Metadata - This is MDNode or MDString.
148       Metadata       = 250,
149 
150       // iPTRAny - An int value the size of the pointer of the current
151       // target to any address space. This must only be used internal to
152       // tblgen. Other than for overloading, we treat iPTRAny the same as iPTR.
153       iPTRAny        = 251,
154 
155       // vAny - A vector with any length and element size. This is used
156       // for intrinsics that have overloadings based on vector types.
157       // This is only for tblgen's consumption!
158       vAny           = 252,
159 
160       // fAny - Any floating-point or vector floating-point value. This is used
161       // for intrinsics that have overloadings based on floating-point types.
162       // This is only for tblgen's consumption!
163       fAny           = 253,
164 
165       // iAny - An integer or vector integer value of any bit width. This is
166       // used for intrinsics that have overloadings based on integer bit widths.
167       // This is only for tblgen's consumption!
168       iAny           = 254,
169 
170       // iPTR - An int value the size of the pointer of the current
171       // target.  This should only be used internal to tblgen!
172       iPTR           = 255,
173 
174       // Any - Any type. This is used for intrinsics that have overloadings.
175       // This is only for tblgen's consumption!
176       Any            = 256
177     };
178 
179     SimpleValueType SimpleTy;
180 
MVT()181     LLVM_CONSTEXPR MVT() : SimpleTy(INVALID_SIMPLE_VALUE_TYPE) {}
MVT(SimpleValueType SVT)182     LLVM_CONSTEXPR MVT(SimpleValueType SVT) : SimpleTy(SVT) { }
183 
184     bool operator>(const MVT& S)  const { return SimpleTy >  S.SimpleTy; }
185     bool operator<(const MVT& S)  const { return SimpleTy <  S.SimpleTy; }
186     bool operator==(const MVT& S) const { return SimpleTy == S.SimpleTy; }
187     bool operator!=(const MVT& S) const { return SimpleTy != S.SimpleTy; }
188     bool operator>=(const MVT& S) const { return SimpleTy >= S.SimpleTy; }
189     bool operator<=(const MVT& S) const { return SimpleTy <= S.SimpleTy; }
190 
191     /// isValid - Return true if this is a valid simple valuetype.
isValid()192     bool isValid() const {
193       return (SimpleTy >= MVT::FIRST_VALUETYPE &&
194               SimpleTy < MVT::LAST_VALUETYPE);
195     }
196 
197     /// isFloatingPoint - Return true if this is a FP, or a vector FP type.
isFloatingPoint()198     bool isFloatingPoint() const {
199       return ((SimpleTy >= MVT::FIRST_FP_VALUETYPE &&
200                SimpleTy <= MVT::LAST_FP_VALUETYPE) ||
201               (SimpleTy >= MVT::FIRST_FP_VECTOR_VALUETYPE &&
202                SimpleTy <= MVT::LAST_FP_VECTOR_VALUETYPE));
203     }
204 
205     /// isInteger - Return true if this is an integer, or a vector integer type.
isInteger()206     bool isInteger() const {
207       return ((SimpleTy >= MVT::FIRST_INTEGER_VALUETYPE &&
208                SimpleTy <= MVT::LAST_INTEGER_VALUETYPE) ||
209               (SimpleTy >= MVT::FIRST_INTEGER_VECTOR_VALUETYPE &&
210                SimpleTy <= MVT::LAST_INTEGER_VECTOR_VALUETYPE));
211     }
212 
213     /// isVector - Return true if this is a vector value type.
isVector()214     bool isVector() const {
215       return (SimpleTy >= MVT::FIRST_VECTOR_VALUETYPE &&
216               SimpleTy <= MVT::LAST_VECTOR_VALUETYPE);
217     }
218 
219     /// is16BitVector - Return true if this is a 16-bit vector type.
is16BitVector()220     bool is16BitVector() const {
221       return (SimpleTy == MVT::v2i8  || SimpleTy == MVT::v1i16 ||
222               SimpleTy == MVT::v16i1);
223     }
224 
225     /// is32BitVector - Return true if this is a 32-bit vector type.
is32BitVector()226     bool is32BitVector() const {
227       return (SimpleTy == MVT::v4i8  || SimpleTy == MVT::v2i16 ||
228               SimpleTy == MVT::v1i32 || SimpleTy == MVT::v2f16 ||
229               SimpleTy == MVT::v1f32);
230     }
231 
232     /// is64BitVector - Return true if this is a 64-bit vector type.
is64BitVector()233     bool is64BitVector() const {
234       return (SimpleTy == MVT::v8i8  || SimpleTy == MVT::v4i16 ||
235               SimpleTy == MVT::v2i32 || SimpleTy == MVT::v1i64 ||
236               SimpleTy == MVT::v4f16 || SimpleTy == MVT::v2f32 ||
237               SimpleTy == MVT::v1f64);
238     }
239 
240     /// is128BitVector - Return true if this is a 128-bit vector type.
is128BitVector()241     bool is128BitVector() const {
242       return (SimpleTy == MVT::v16i8  || SimpleTy == MVT::v8i16 ||
243               SimpleTy == MVT::v4i32  || SimpleTy == MVT::v2i64 ||
244               SimpleTy == MVT::v1i128 || SimpleTy == MVT::v8f16 ||
245               SimpleTy == MVT::v4f32  || SimpleTy == MVT::v2f64);
246     }
247 
248     /// is256BitVector - Return true if this is a 256-bit vector type.
is256BitVector()249     bool is256BitVector() const {
250       return (SimpleTy == MVT::v8f32 || SimpleTy == MVT::v4f64  ||
251               SimpleTy == MVT::v32i8 || SimpleTy == MVT::v16i16 ||
252               SimpleTy == MVT::v8i32 || SimpleTy == MVT::v4i64);
253     }
254 
255     /// is512BitVector - Return true if this is a 512-bit vector type.
is512BitVector()256     bool is512BitVector() const {
257       return (SimpleTy == MVT::v16f32 || SimpleTy == MVT::v8f64  ||
258               SimpleTy == MVT::v512i1 || SimpleTy == MVT::v64i8  ||
259               SimpleTy == MVT::v32i16 || SimpleTy == MVT::v16i32 ||
260               SimpleTy == MVT::v8i64);
261     }
262 
263     /// is1024BitVector - Return true if this is a 1024-bit vector type.
is1024BitVector()264     bool is1024BitVector() const {
265       return (SimpleTy == MVT::v1024i1 || SimpleTy == MVT::v128i8 ||
266               SimpleTy == MVT::v64i16  || SimpleTy == MVT::v32i32 ||
267               SimpleTy == MVT::v16i64);
268     }
269 
270     /// is2048BitVector - Return true if this is a 1024-bit vector type.
is2048BitVector()271     bool is2048BitVector() const {
272       return (SimpleTy == MVT::v256i8 || SimpleTy == MVT::v128i16 ||
273               SimpleTy == MVT::v64i32 || SimpleTy == MVT::v32i64);
274     }
275 
276     /// isOverloaded - Return true if this is an overloaded type for TableGen.
isOverloaded()277     bool isOverloaded() const {
278       return (SimpleTy==MVT::Any  ||
279               SimpleTy==MVT::iAny || SimpleTy==MVT::fAny ||
280               SimpleTy==MVT::vAny || SimpleTy==MVT::iPTRAny);
281     }
282 
283     /// isPow2VectorType - Returns true if the given vector is a power of 2.
isPow2VectorType()284     bool isPow2VectorType() const {
285       unsigned NElts = getVectorNumElements();
286       return !(NElts & (NElts - 1));
287     }
288 
289     /// getPow2VectorType - Widens the length of the given vector MVT up to
290     /// the nearest power of 2 and returns that type.
getPow2VectorType()291     MVT getPow2VectorType() const {
292       if (isPow2VectorType())
293         return *this;
294 
295       unsigned NElts = getVectorNumElements();
296       unsigned Pow2NElts = 1 << Log2_32_Ceil(NElts);
297       return MVT::getVectorVT(getVectorElementType(), Pow2NElts);
298     }
299 
300     /// getScalarType - If this is a vector type, return the element type,
301     /// otherwise return this.
getScalarType()302     MVT getScalarType() const {
303       return isVector() ? getVectorElementType() : *this;
304     }
305 
getVectorElementType()306     MVT getVectorElementType() const {
307       switch (SimpleTy) {
308       default:
309         llvm_unreachable("Not a vector MVT!");
310       case v2i1:
311       case v4i1:
312       case v8i1:
313       case v16i1:
314       case v32i1:
315       case v64i1:
316       case v512i1:
317       case v1024i1: return i1;
318       case v1i8:
319       case v2i8:
320       case v4i8:
321       case v8i8:
322       case v16i8:
323       case v32i8:
324       case v64i8:
325       case v128i8:
326       case v256i8: return i8;
327       case v1i16:
328       case v2i16:
329       case v4i16:
330       case v8i16:
331       case v16i16:
332       case v32i16:
333       case v64i16:
334       case v128i16: return i16;
335       case v1i32:
336       case v2i32:
337       case v4i32:
338       case v8i32:
339       case v16i32:
340       case v32i32:
341       case v64i32: return i32;
342       case v1i64:
343       case v2i64:
344       case v4i64:
345       case v8i64:
346       case v16i64:
347       case v32i64: return i64;
348       case v1i128: return i128;
349       case v2f16:
350       case v4f16:
351       case v8f16: return f16;
352       case v1f32:
353       case v2f32:
354       case v4f32:
355       case v8f32:
356       case v16f32: return f32;
357       case v1f64:
358       case v2f64:
359       case v4f64:
360       case v8f64: return f64;
361       }
362     }
363 
getVectorNumElements()364     unsigned getVectorNumElements() const {
365       switch (SimpleTy) {
366       default:
367         llvm_unreachable("Not a vector MVT!");
368       case v1024i1: return 1024;
369       case v512i1: return 512;
370       case v256i8: return 256;
371       case v128i8:
372       case v128i16: return 128;
373       case v64i1:
374       case v64i8:
375       case v64i16:
376       case v64i32: return 64;
377       case v32i1:
378       case v32i8:
379       case v32i16:
380       case v32i32:
381       case v32i64: return 32;
382       case v16i1:
383       case v16i8:
384       case v16i16:
385       case v16i32:
386       case v16i64:
387       case v16f32: return 16;
388       case v8i1:
389       case v8i8:
390       case v8i16:
391       case v8i32:
392       case v8i64:
393       case v8f16:
394       case v8f32:
395       case v8f64: return 8;
396       case v4i1:
397       case v4i8:
398       case v4i16:
399       case v4i32:
400       case v4i64:
401       case v4f16:
402       case v4f32:
403       case v4f64: return 4;
404       case v2i1:
405       case v2i8:
406       case v2i16:
407       case v2i32:
408       case v2i64:
409       case v2f16:
410       case v2f32:
411       case v2f64: return 2;
412       case v1i8:
413       case v1i16:
414       case v1i32:
415       case v1i64:
416       case v1i128:
417       case v1f32:
418       case v1f64: return 1;
419       }
420     }
421 
getSizeInBits()422     unsigned getSizeInBits() const {
423       switch (SimpleTy) {
424       default:
425         llvm_unreachable("getSizeInBits called on extended MVT.");
426       case Other:
427         llvm_unreachable("Value type is non-standard value, Other.");
428       case iPTR:
429         llvm_unreachable("Value type size is target-dependent. Ask TLI.");
430       case iPTRAny:
431       case iAny:
432       case fAny:
433       case vAny:
434       case Any:
435         llvm_unreachable("Value type is overloaded.");
436       case token:
437         llvm_unreachable("Token type is a sentinel that cannot be used "
438                          "in codegen and has no size");
439       case Metadata:
440         llvm_unreachable("Value type is metadata.");
441       case i1  :  return 1;
442       case v2i1:  return 2;
443       case v4i1:  return 4;
444       case i8  :
445       case v1i8:
446       case v8i1: return 8;
447       case i16 :
448       case f16:
449       case v16i1:
450       case v2i8:
451       case v1i16: return 16;
452       case f32 :
453       case i32 :
454       case v32i1:
455       case v4i8:
456       case v2i16:
457       case v2f16:
458       case v1f32:
459       case v1i32: return 32;
460       case x86mmx:
461       case f64 :
462       case i64 :
463       case v64i1:
464       case v8i8:
465       case v4i16:
466       case v2i32:
467       case v1i64:
468       case v4f16:
469       case v2f32:
470       case v1f64: return 64;
471       case f80 :  return 80;
472       case f128:
473       case ppcf128:
474       case i128:
475       case v16i8:
476       case v8i16:
477       case v4i32:
478       case v2i64:
479       case v1i128:
480       case v8f16:
481       case v4f32:
482       case v2f64: return 128;
483       case v32i8:
484       case v16i16:
485       case v8i32:
486       case v4i64:
487       case v8f32:
488       case v4f64: return 256;
489       case v512i1:
490       case v64i8:
491       case v32i16:
492       case v16i32:
493       case v8i64:
494       case v16f32:
495       case v8f64: return 512;
496       case v1024i1:
497       case v128i8:
498       case v64i16:
499       case v32i32:
500       case v16i64: return 1024;
501       case v256i8:
502       case v128i16:
503       case v64i32:
504       case v32i64: return 2048;
505       }
506     }
507 
getScalarSizeInBits()508     unsigned getScalarSizeInBits() const {
509       return getScalarType().getSizeInBits();
510     }
511 
512     /// getStoreSize - Return the number of bytes overwritten by a store
513     /// of the specified value type.
getStoreSize()514     unsigned getStoreSize() const {
515       return (getSizeInBits() + 7) / 8;
516     }
517 
518     /// getStoreSizeInBits - Return the number of bits overwritten by a store
519     /// of the specified value type.
getStoreSizeInBits()520     unsigned getStoreSizeInBits() const {
521       return getStoreSize() * 8;
522     }
523 
524     /// Return true if this has more bits than VT.
bitsGT(MVT VT)525     bool bitsGT(MVT VT) const {
526       return getSizeInBits() > VT.getSizeInBits();
527     }
528 
529     /// Return true if this has no less bits than VT.
bitsGE(MVT VT)530     bool bitsGE(MVT VT) const {
531       return getSizeInBits() >= VT.getSizeInBits();
532     }
533 
534     /// Return true if this has less bits than VT.
bitsLT(MVT VT)535     bool bitsLT(MVT VT) const {
536       return getSizeInBits() < VT.getSizeInBits();
537     }
538 
539     /// Return true if this has no more bits than VT.
bitsLE(MVT VT)540     bool bitsLE(MVT VT) const {
541       return getSizeInBits() <= VT.getSizeInBits();
542     }
543 
544 
getFloatingPointVT(unsigned BitWidth)545     static MVT getFloatingPointVT(unsigned BitWidth) {
546       switch (BitWidth) {
547       default:
548         llvm_unreachable("Bad bit width!");
549       case 16:
550         return MVT::f16;
551       case 32:
552         return MVT::f32;
553       case 64:
554         return MVT::f64;
555       case 80:
556         return MVT::f80;
557       case 128:
558         return MVT::f128;
559       }
560     }
561 
getIntegerVT(unsigned BitWidth)562     static MVT getIntegerVT(unsigned BitWidth) {
563       switch (BitWidth) {
564       default:
565         return (MVT::SimpleValueType)(MVT::INVALID_SIMPLE_VALUE_TYPE);
566       case 1:
567         return MVT::i1;
568       case 8:
569         return MVT::i8;
570       case 16:
571         return MVT::i16;
572       case 32:
573         return MVT::i32;
574       case 64:
575         return MVT::i64;
576       case 128:
577         return MVT::i128;
578       }
579     }
580 
getVectorVT(MVT VT,unsigned NumElements)581     static MVT getVectorVT(MVT VT, unsigned NumElements) {
582       switch (VT.SimpleTy) {
583       default:
584         break;
585       case MVT::i1:
586         if (NumElements == 2)    return MVT::v2i1;
587         if (NumElements == 4)    return MVT::v4i1;
588         if (NumElements == 8)    return MVT::v8i1;
589         if (NumElements == 16)   return MVT::v16i1;
590         if (NumElements == 32)   return MVT::v32i1;
591         if (NumElements == 64)   return MVT::v64i1;
592         if (NumElements == 512)  return MVT::v512i1;
593         if (NumElements == 1024) return MVT::v1024i1;
594         break;
595       case MVT::i8:
596         if (NumElements == 1)   return MVT::v1i8;
597         if (NumElements == 2)   return MVT::v2i8;
598         if (NumElements == 4)   return MVT::v4i8;
599         if (NumElements == 8)   return MVT::v8i8;
600         if (NumElements == 16)  return MVT::v16i8;
601         if (NumElements == 32)  return MVT::v32i8;
602         if (NumElements == 64)  return MVT::v64i8;
603         if (NumElements == 128) return MVT::v128i8;
604         if (NumElements == 256) return MVT::v256i8;
605         break;
606       case MVT::i16:
607         if (NumElements == 1)   return MVT::v1i16;
608         if (NumElements == 2)   return MVT::v2i16;
609         if (NumElements == 4)   return MVT::v4i16;
610         if (NumElements == 8)   return MVT::v8i16;
611         if (NumElements == 16)  return MVT::v16i16;
612         if (NumElements == 32)  return MVT::v32i16;
613         if (NumElements == 64)  return MVT::v64i16;
614         if (NumElements == 128) return MVT::v128i16;
615         break;
616       case MVT::i32:
617         if (NumElements == 1)  return MVT::v1i32;
618         if (NumElements == 2)  return MVT::v2i32;
619         if (NumElements == 4)  return MVT::v4i32;
620         if (NumElements == 8)  return MVT::v8i32;
621         if (NumElements == 16) return MVT::v16i32;
622         if (NumElements == 32) return MVT::v32i32;
623         if (NumElements == 64) return MVT::v64i32;
624         break;
625       case MVT::i64:
626         if (NumElements == 1)  return MVT::v1i64;
627         if (NumElements == 2)  return MVT::v2i64;
628         if (NumElements == 4)  return MVT::v4i64;
629         if (NumElements == 8)  return MVT::v8i64;
630         if (NumElements == 16) return MVT::v16i64;
631         if (NumElements == 32) return MVT::v32i64;
632         break;
633       case MVT::i128:
634         if (NumElements == 1)  return MVT::v1i128;
635         break;
636       case MVT::f16:
637         if (NumElements == 2)  return MVT::v2f16;
638         if (NumElements == 4)  return MVT::v4f16;
639         if (NumElements == 8)  return MVT::v8f16;
640         break;
641       case MVT::f32:
642         if (NumElements == 1)  return MVT::v1f32;
643         if (NumElements == 2)  return MVT::v2f32;
644         if (NumElements == 4)  return MVT::v4f32;
645         if (NumElements == 8)  return MVT::v8f32;
646         if (NumElements == 16) return MVT::v16f32;
647         break;
648       case MVT::f64:
649         if (NumElements == 1)  return MVT::v1f64;
650         if (NumElements == 2)  return MVT::v2f64;
651         if (NumElements == 4)  return MVT::v4f64;
652         if (NumElements == 8)  return MVT::v8f64;
653         break;
654       }
655       return (MVT::SimpleValueType)(MVT::INVALID_SIMPLE_VALUE_TYPE);
656     }
657 
658     /// Return the value type corresponding to the specified type.  This returns
659     /// all pointers as iPTR.  If HandleUnknown is true, unknown types are
660     /// returned as Other, otherwise they are invalid.
661     static MVT getVT(Type *Ty, bool HandleUnknown = false);
662 
663   private:
664     /// A simple iterator over the MVT::SimpleValueType enum.
665     struct mvt_iterator {
666       SimpleValueType VT;
mvt_iteratormvt_iterator667       mvt_iterator(SimpleValueType VT) : VT(VT) {}
668       MVT operator*() const { return VT; }
669       bool operator!=(const mvt_iterator &LHS) const { return VT != LHS.VT; }
670       mvt_iterator& operator++() {
671         VT = (MVT::SimpleValueType)((int)VT + 1);
672         assert((int)VT <= MVT::MAX_ALLOWED_VALUETYPE &&
673                "MVT iterator overflowed.");
674         return *this;
675       }
676     };
677     /// A range of the MVT::SimpleValueType enum.
678     typedef iterator_range<mvt_iterator> mvt_range;
679 
680   public:
681     /// SimpleValueType Iteration
682     /// @{
all_valuetypes()683     static mvt_range all_valuetypes() {
684       return mvt_range(MVT::FIRST_VALUETYPE, MVT::LAST_VALUETYPE);
685     }
integer_valuetypes()686     static mvt_range integer_valuetypes() {
687       return mvt_range(MVT::FIRST_INTEGER_VALUETYPE,
688                        (MVT::SimpleValueType)(MVT::LAST_INTEGER_VALUETYPE + 1));
689     }
fp_valuetypes()690     static mvt_range fp_valuetypes() {
691       return mvt_range(MVT::FIRST_FP_VALUETYPE,
692                        (MVT::SimpleValueType)(MVT::LAST_FP_VALUETYPE + 1));
693     }
vector_valuetypes()694     static mvt_range vector_valuetypes() {
695       return mvt_range(MVT::FIRST_VECTOR_VALUETYPE,
696                        (MVT::SimpleValueType)(MVT::LAST_VECTOR_VALUETYPE + 1));
697     }
integer_vector_valuetypes()698     static mvt_range integer_vector_valuetypes() {
699       return mvt_range(
700           MVT::FIRST_INTEGER_VECTOR_VALUETYPE,
701           (MVT::SimpleValueType)(MVT::LAST_INTEGER_VECTOR_VALUETYPE + 1));
702     }
fp_vector_valuetypes()703     static mvt_range fp_vector_valuetypes() {
704       return mvt_range(
705           MVT::FIRST_FP_VECTOR_VALUETYPE,
706           (MVT::SimpleValueType)(MVT::LAST_FP_VECTOR_VALUETYPE + 1));
707     }
708     /// @}
709   };
710 
711 } // End llvm namespace
712 
713 #endif
714