1 //===- CodeGen/ValueTypes.h - Low-Level Target independ. types --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // 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
21 #include "llvm/Support/DataTypes.h"
22 #include "llvm/Support/MathExtras.h"
27 struct MVT { // MVT = Machine Value Type
29 enum SimpleValueType {
30 // If you change this numbering, you must change the values in
31 // ValueTypes.td as well!
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 FIRST_INTEGER_VALUETYPE = i1,
41 LAST_INTEGER_VALUETYPE = i128,
43 f32 = 7, // This is a 32 bit floating point value
44 f64 = 8, // This is a 64 bit floating point value
45 f80 = 9, // This is a 80 bit floating point value
46 f128 = 10, // This is a 128 bit floating point value
47 ppcf128 = 11, // This is a PPC 128-bit floating point value
48 Flag = 12, // This is a condition code or machine flag.
50 isVoid = 13, // This has no value
55 v16i8 = 17, // 16 x i8
56 v32i8 = 18, // 32 x i8
57 v2i16 = 19, // 2 x i16
58 v4i16 = 20, // 4 x i16
59 v8i16 = 21, // 8 x i16
60 v16i16 = 22, // 16 x i16
61 v2i32 = 23, // 2 x i32
62 v3i32 = 24, // 3 x i32
63 v4i32 = 25, // 4 x i32
64 v8i32 = 26, // 8 x i32
65 v1i64 = 27, // 1 x i64
66 v2i64 = 28, // 2 x i64
67 v4i64 = 29, // 4 x i64
69 v2f32 = 30, // 2 x f32
70 v3f32 = 31, // 3 x f32
71 v4f32 = 32, // 4 x f32
72 v8f32 = 33, // 8 x f32
73 v2f64 = 34, // 2 x f64
74 v4f64 = 35, // 4 x f64
76 FIRST_VECTOR_VALUETYPE = v2i8,
77 LAST_VECTOR_VALUETYPE = v4f64,
79 LAST_VALUETYPE = 36, // This always remains at the end of the list.
81 // This is the current maximum for LAST_VALUETYPE.
82 // MVT::MAX_ALLOWED_VALUETYPE is used for asserts and to size bit vectors
83 // This value must be a multiple of 32.
84 MAX_ALLOWED_VALUETYPE = 64,
86 // iPTRAny - An int value the size of the pointer of the current
87 // target to any address space. This must only be used internal to
88 // tblgen. Other than for overloading, we treat iPTRAny the same as iPTR.
91 // fAny - Any floating-point or vector floating-point value. This is used
92 // for intrinsics that have overloadings based on floating-point types.
93 // This is only for tblgen's consumption!
96 // iAny - An integer or vector integer value of any bit width. This is
97 // used for intrinsics that have overloadings based on integer bit widths.
98 // This is only for tblgen's consumption!
101 // iPTR - An int value the size of the pointer of the current
102 // target. This should only be used internal to tblgen!
105 // LastSimpleValueType - The greatest valid SimpleValueType value.
106 LastSimpleValueType = 255
110 /// This union holds low-level value types. Valid values include any of
111 /// the values in the SimpleValueType enum, or any value returned from one
112 /// of the MVT methods. Any value type equal to one of the SimpleValueType
113 /// enum values is a "simple" value type. All others are "extended".
115 /// Note that simple doesn't necessary mean legal for the target machine.
116 /// All legal value types must be simple, but often there are some simple
117 /// value types that are not legal.
126 MVT(SimpleValueType S) : V(S) {}
128 bool operator==(const MVT VT) const {
129 return getRawBits() == VT.getRawBits();
131 bool operator!=(const MVT VT) const {
132 return getRawBits() != VT.getRawBits();
135 /// getFloatingPointVT - Returns the MVT that represents a floating point
136 /// type with the given number of bits. There are two floating point types
137 /// with 128 bits - this returns f128 rather than ppcf128.
138 static MVT getFloatingPointVT(unsigned BitWidth) {
141 assert(false && "Bad bit width!");
153 /// getIntegerVT - Returns the MVT that represents an integer with the given
155 static MVT getIntegerVT(unsigned BitWidth) {
172 return getExtendedIntegerVT(BitWidth);
175 /// getVectorVT - Returns the MVT that represents a vector NumElements in
176 /// length, where each element is of type VT.
177 static MVT getVectorVT(MVT VT, unsigned NumElements) {
182 if (NumElements == 2) return v2i8;
183 if (NumElements == 4) return v4i8;
184 if (NumElements == 8) return v8i8;
185 if (NumElements == 16) return v16i8;
186 if (NumElements == 32) return v32i8;
189 if (NumElements == 2) return v2i16;
190 if (NumElements == 4) return v4i16;
191 if (NumElements == 8) return v8i16;
192 if (NumElements == 16) return v16i16;
195 if (NumElements == 2) return v2i32;
196 if (NumElements == 3) return v3i32;
197 if (NumElements == 4) return v4i32;
198 if (NumElements == 8) return v8i32;
201 if (NumElements == 1) return v1i64;
202 if (NumElements == 2) return v2i64;
203 if (NumElements == 4) return v4i64;
206 if (NumElements == 2) return v2f32;
207 if (NumElements == 3) return v3f32;
208 if (NumElements == 4) return v4f32;
209 if (NumElements == 8) return v8f32;
212 if (NumElements == 2) return v2f64;
213 if (NumElements == 4) return v4f64;
216 return getExtendedVectorVT(VT, NumElements);
219 /// getIntVectorWithNumElements - Return any integer vector type that has
220 /// the specified number of elements.
221 static MVT getIntVectorWithNumElements(unsigned NumElts) {
223 default: return getVectorVT(i8, NumElts);
224 case 1: return v1i64;
225 case 2: return v2i32;
226 case 3: return v3i32;
227 case 4: return v4i16;
229 case 16: return v16i8;
233 /// isSimple - Test if the given MVT is simple (as opposed to being
235 bool isSimple() const {
236 return V <= LastSimpleValueType;
239 /// isExtended - Test if the given MVT is extended (as opposed to
241 bool isExtended() const {
245 /// isFloatingPoint - Return true if this is a FP, or a vector FP type.
246 bool isFloatingPoint() const {
248 ((V >= f32 && V <= ppcf128) ||
249 (V >= v2f32 && V <= v4f64)) : isExtendedFloatingPoint();
252 /// isInteger - Return true if this is an integer, or a vector integer type.
253 bool isInteger() const {
255 ((V >= FIRST_INTEGER_VALUETYPE && V <= LAST_INTEGER_VALUETYPE) ||
256 (V >= v2i8 && V <= v4i64)) : isExtendedInteger();
259 /// isVector - Return true if this is a vector value type.
260 bool isVector() const {
262 (V >= FIRST_VECTOR_VALUETYPE && V <= LAST_VECTOR_VALUETYPE) :
266 /// is64BitVector - Return true if this is a 64-bit vector type.
267 bool is64BitVector() const {
269 (V==v8i8 || V==v4i16 || V==v2i32 || V==v1i64 || V==v2f32) :
270 isExtended64BitVector();
273 /// is128BitVector - Return true if this is a 128-bit vector type.
274 bool is128BitVector() const {
276 (V==v16i8 || V==v8i16 || V==v4i32 ||
277 V==v2i64 || V==v4f32 || V==v2f64) :
278 isExtended128BitVector();
281 /// is256BitVector - Return true if this is a 256-bit vector type.
282 inline bool is256BitVector() const {
284 (V==v8f32 || V==v4f64 || V==v32i8 || V==v16i16 || V==v8i32 ||
285 V==v4i64) : isExtended256BitVector();
288 /// isByteSized - Return true if the bit size is a multiple of 8.
289 bool isByteSized() const {
290 return (getSizeInBits() & 7) == 0;
293 /// isRound - Return true if the size is a power-of-two number of bytes.
294 bool isRound() const {
295 unsigned BitSize = getSizeInBits();
296 return BitSize >= 8 && !(BitSize & (BitSize - 1));
299 /// bitsEq - Return true if this has the same number of bits as VT.
300 bool bitsEq(MVT VT) const {
301 return getSizeInBits() == VT.getSizeInBits();
304 /// bitsGT - Return true if this has more bits than VT.
305 bool bitsGT(MVT VT) const {
306 return getSizeInBits() > VT.getSizeInBits();
309 /// bitsGE - Return true if this has no less bits than VT.
310 bool bitsGE(MVT VT) const {
311 return getSizeInBits() >= VT.getSizeInBits();
314 /// bitsLT - Return true if this has less bits than VT.
315 bool bitsLT(MVT VT) const {
316 return getSizeInBits() < VT.getSizeInBits();
319 /// bitsLE - Return true if this has no more bits than VT.
320 bool bitsLE(MVT VT) const {
321 return getSizeInBits() <= VT.getSizeInBits();
325 /// getSimpleVT - Return the SimpleValueType held in the specified
327 SimpleValueType getSimpleVT() const {
328 assert(isSimple() && "Expected a SimpleValueType!");
329 return SimpleValueType(V);
332 /// getVectorElementType - Given a vector type, return the type of
334 MVT getVectorElementType() const {
335 assert(isVector() && "Invalid vector type!");
338 return getExtendedVectorElementType();
343 case v32i8: return i8;
347 case v16i16: return i16;
351 case v8i32: return i32;
354 case v4i64: return i64;
358 case v8f32: return f32;
360 case v4f64: return f64;
364 /// getVectorNumElements - Given a vector type, return the number of
365 /// elements it contains.
366 unsigned getVectorNumElements() const {
367 assert(isVector() && "Invalid vector type!");
370 return getExtendedVectorNumElements();
371 case v32i8: return 32;
373 case v16i16: return 16;
377 case v8f32: return 8;
383 case v4f64: return 4;
385 case v3f32: return 3;
391 case v2f64: return 2;
392 case v1i64: return 1;
396 /// getSizeInBits - Return the size of the specified value type in bits.
397 unsigned getSizeInBits() const {
400 assert(0 && "Value type size is target-dependent. Ask TLI.");
404 assert(0 && "Value type is overloaded.");
406 return getExtendedSizeInBits();
410 case v2i8: return 16;
414 case v2i16: return 32;
421 case v2f32: return 64;
422 case f80 : return 80;
424 case v3f32: return 96;
433 case v2f64: return 128;
439 case v4f64: return 256;
443 /// getStoreSizeInBits - Return the number of bits overwritten by a store
444 /// of the specified value type.
445 unsigned getStoreSizeInBits() const {
446 return (getSizeInBits() + 7)/8*8;
449 /// getRoundIntegerType - Rounds the bit-width of the given integer MVT up
450 /// to the nearest power of two (and at least to eight), and returns the
451 /// integer MVT with that number of bits.
452 MVT getRoundIntegerType() const {
453 assert(isInteger() && !isVector() && "Invalid integer type!");
454 unsigned BitWidth = getSizeInBits();
458 return getIntegerVT(1 << Log2_32_Ceil(BitWidth));
461 /// isPow2VectorType - Retuns true if the given vector is a power of 2.
462 bool isPow2VectorType() const {
463 unsigned NElts = getVectorNumElements();
464 return !(NElts & (NElts - 1));
467 /// getPow2VectorType - Widens the length of the given vector MVT up to
468 /// the nearest power of 2 and returns that type.
469 MVT getPow2VectorType() const {
470 if (!isPow2VectorType()) {
471 unsigned NElts = getVectorNumElements();
472 unsigned Pow2NElts = 1 << Log2_32_Ceil(NElts);
473 return MVT::getVectorVT(getVectorElementType(), Pow2NElts);
480 /// getMVTString - This function returns value type as a string,
482 std::string getMVTString() const;
484 /// getTypeForMVT - This method returns an LLVM type corresponding to the
485 /// specified MVT. For integer types, this returns an unsigned type. Note
486 /// that this will abort for types that cannot be represented.
487 const Type *getTypeForMVT() const;
489 /// getMVT - Return the value type corresponding to the specified type.
490 /// This returns all pointers as iPTR. If HandleUnknown is true, unknown
491 /// types are returned as Other, otherwise they are invalid.
492 static MVT getMVT(const Type *Ty, bool HandleUnknown = false);
494 /// getRawBits - Represent the type as a bunch of bits.
495 uintptr_t getRawBits() const { return V; }
497 /// compareRawBits - A meaningless but well-behaved order, useful for
498 /// constructing containers.
499 struct compareRawBits {
500 bool operator()(MVT L, MVT R) const {
501 return L.getRawBits() < R.getRawBits();
506 // Methods for handling the Extended-type case in functions above.
507 // These are all out-of-line to prevent users of this header file
508 // from having a dependency on Type.h.
509 static MVT getExtendedIntegerVT(unsigned BitWidth);
510 static MVT getExtendedVectorVT(MVT VT, unsigned NumElements);
511 bool isExtendedFloatingPoint() const;
512 bool isExtendedInteger() const;
513 bool isExtendedVector() const;
514 bool isExtended64BitVector() const;
515 bool isExtended128BitVector() const;
516 bool isExtended256BitVector() const;
517 MVT getExtendedVectorElementType() const;
518 unsigned getExtendedVectorNumElements() const;
519 unsigned getExtendedSizeInBits() const;
522 } // End llvm namespace