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1 //===--- OperationKinds.def - Operations Database ---------------*- 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 enumerates the different kinds of operations that can be
11 // performed by various expressions.
12 //
13 //===----------------------------------------------------------------------===//
14 //
15 /// @file OperationKinds.def
16 ///
17 /// In this file, each of the C/C++ operations is enumerated CAST_OPERATION,
18 /// BINARY_OPERATION or UNARY_OPERATION macro, each of which can be specified by
19 /// the code including this file.
20 ///
21 /// Macros had one or two arguments:
22 ///
23 /// Name: The name of the operation. Name (prefixed with CK_, UO_ or BO_) will
24 /// be the name of the corresponding enumerator (see OperationsKinds.h).
25 ///
26 /// Spelling: A string that provides a canonical spelling for the operation.
27
28 #ifndef CAST_OPERATION
29 #  define CAST_OPERATION(Name)
30 #endif
31
32 #ifndef BINARY_OPERATION
33 #  define BINARY_OPERATION(Name, Spelling)
34 #endif
35
36 #ifndef UNARY_OPERATION
37 #  define UNARY_OPERATION(Name, Spelling)
38 #endif
39
40 //===- Cast Operations  ---------------------------------------------------===//
41
42 /// CK_Dependent - A conversion which cannot yet be analyzed because
43 /// either the expression or target type is dependent.  These are
44 /// created only for explicit casts; dependent ASTs aren't required
45 /// to even approximately type-check.
46 ///   (T*) malloc(sizeof(T))
47 ///   reinterpret_cast<intptr_t>(A<T>::alloc());
48 CAST_OPERATION(Dependent)
49
50 /// CK_BitCast - A conversion which causes a bit pattern of one type
51 /// to be reinterpreted as a bit pattern of another type.  Generally
52 /// the operands must have equivalent size and unrelated types.
53 ///
54 /// The pointer conversion char* -> int* is a bitcast.  A conversion
55 /// from any pointer type to a C pointer type is a bitcast unless
56 /// it's actually BaseToDerived or DerivedToBase.  A conversion to a
57 /// block pointer or ObjC pointer type is a bitcast only if the
58 /// operand has the same type kind; otherwise, it's one of the
59 /// specialized casts below.
60 ///
61 /// Vector coercions are bitcasts.
62 CAST_OPERATION(BitCast)
63
64 /// CK_LValueBitCast - A conversion which reinterprets the address of
65 /// an l-value as an l-value of a different kind.  Used for
66 /// reinterpret_casts of l-value expressions to reference types.
67 ///    bool b; reinterpret_cast<char&>(b) = 'a';
68 CAST_OPERATION(LValueBitCast)
69
70 /// CK_LValueToRValue - A conversion which causes the extraction of
71 /// an r-value from the operand gl-value.  The result of an r-value
72 /// conversion is always unqualified.
73 CAST_OPERATION(LValueToRValue)
74
75 /// CK_NoOp - A conversion which does not affect the type other than
76 /// (possibly) adding qualifiers.
77 ///   int    -> int
78 ///   char** -> const char * const *
79 CAST_OPERATION(NoOp)
80
81 /// CK_BaseToDerived - A conversion from a C++ class pointer/reference
82 /// to a derived class pointer/reference.
83 ///   B *b = static_cast<B*>(a);
84 CAST_OPERATION(BaseToDerived)
85
86 /// CK_DerivedToBase - A conversion from a C++ class pointer
87 /// to a base class pointer.
88 ///   A *a = new B();
89 CAST_OPERATION(DerivedToBase)
90
91 /// CK_UncheckedDerivedToBase - A conversion from a C++ class
92 /// pointer/reference to a base class that can assume that the
93 /// derived pointer is not null.
94 ///   const A &a = B();
95 ///   b->method_from_a();
96 CAST_OPERATION(UncheckedDerivedToBase)
97
98 /// CK_Dynamic - A C++ dynamic_cast.
99 CAST_OPERATION(Dynamic)
100
101 /// CK_ToUnion - The GCC cast-to-union extension.
102 ///   int   -> union { int x; float y; }
103 ///   float -> union { int x; float y; }
104 CAST_OPERATION(ToUnion)
105
106 /// CK_ArrayToPointerDecay - Array to pointer decay.
107 ///   int[10] -> int*
108 ///   char[5][6] -> char(*)[6]
109 CAST_OPERATION(ArrayToPointerDecay)
110
111 /// CK_FunctionToPointerDecay - Function to pointer decay.
112 ///   void(int) -> void(*)(int)
113 CAST_OPERATION(FunctionToPointerDecay)
114
115 /// CK_NullToPointer - Null pointer constant to pointer, ObjC
116 /// pointer, or block pointer.
117 ///   (void*) 0
118 ///   void (^block)() = 0;
119 CAST_OPERATION(NullToPointer)
120
121 /// CK_NullToMemberPointer - Null pointer constant to member pointer.
122 ///   int A::*mptr = 0;
123 ///   int (A::*fptr)(int) = nullptr;
124 CAST_OPERATION(NullToMemberPointer)
125
126 /// CK_BaseToDerivedMemberPointer - Member pointer in base class to
127 /// member pointer in derived class.
128 ///   int B::*mptr = &A::member;
129 CAST_OPERATION(BaseToDerivedMemberPointer)
130
131 /// CK_DerivedToBaseMemberPointer - Member pointer in derived class to
132 /// member pointer in base class.
133 ///   int A::*mptr = static_cast<int A::*>(&B::member);
134 CAST_OPERATION(DerivedToBaseMemberPointer)
135
136 /// CK_MemberPointerToBoolean - Member pointer to boolean.  A check
137 /// against the null member pointer.
138 CAST_OPERATION(MemberPointerToBoolean)
139
140 /// CK_ReinterpretMemberPointer - Reinterpret a member pointer as a
141 /// different kind of member pointer.  C++ forbids this from
142 /// crossing between function and object types, but otherwise does
143 /// not restrict it.  However, the only operation that is permitted
144 /// on a "punned" member pointer is casting it back to the original
145 /// type, which is required to be a lossless operation (although
146 /// many ABIs do not guarantee this on all possible intermediate types).
147 CAST_OPERATION(ReinterpretMemberPointer)
148
149 /// CK_UserDefinedConversion - Conversion using a user defined type
150 /// conversion function.
151 ///    struct A { operator int(); }; int i = int(A());
152 CAST_OPERATION(UserDefinedConversion)
153
154 /// CK_ConstructorConversion - Conversion by constructor.
155 ///    struct A { A(int); }; A a = A(10);
156 CAST_OPERATION(ConstructorConversion)
157
158 /// CK_IntegralToPointer - Integral to pointer.  A special kind of
159 /// reinterpreting conversion.  Applies to normal, ObjC, and block
160 /// pointers.
161 ///    (char*) 0x1001aab0
162 ///    reinterpret_cast<int*>(0)
163 CAST_OPERATION(IntegralToPointer)
164
165 /// CK_PointerToIntegral - Pointer to integral.  A special kind of
166 /// reinterpreting conversion.  Applies to normal, ObjC, and block
167 /// pointers.
168 ///    (intptr_t) "help!"
169 CAST_OPERATION(PointerToIntegral)
170
171 /// CK_PointerToBoolean - Pointer to boolean conversion.  A check
172 /// against null.  Applies to normal, ObjC, and block pointers.
173 CAST_OPERATION(PointerToBoolean)
174
175 /// CK_ToVoid - Cast to void, discarding the computed value.
176 ///    (void) malloc(2048)
177 CAST_OPERATION(ToVoid)
178
179 /// CK_VectorSplat - A conversion from an arithmetic type to a
180 /// vector of that element type.  Fills all elements ("splats") with
181 /// the source value.
182 ///    __attribute__((ext_vector_type(4))) int v = 5;
183 CAST_OPERATION(VectorSplat)
184
185 /// CK_IntegralCast - A cast between integral types (other than to
186 /// boolean).  Variously a bitcast, a truncation, a sign-extension,
187 /// or a zero-extension.
188 ///    long l = 5;
189 ///    (unsigned) i
190 CAST_OPERATION(IntegralCast)
191
192 /// CK_IntegralToBoolean - Integral to boolean.  A check against zero.
193 ///    (bool) i
194 CAST_OPERATION(IntegralToBoolean)
195
196 /// CK_IntegralToFloating - Integral to floating point.
197 ///    float f = i;
198 CAST_OPERATION(IntegralToFloating)
199
200 /// CK_FixedPointCast - Fixed point to fixed point.
201 ///    (_Accum) 0.5r
202 CAST_OPERATION(FixedPointCast)
203
204 /// CK_FixedPointToBoolean - Fixed point to boolean.
205 ///    (bool) 0.5r
206 CAST_OPERATION(FixedPointToBoolean)
207
208 /// CK_FloatingToIntegral - Floating point to integral.  Rounds
209 /// towards zero, discarding any fractional component.
210 ///    (int) f
211 CAST_OPERATION(FloatingToIntegral)
212
213 /// CK_FloatingToBoolean - Floating point to boolean.
214 ///    (bool) f
215 CAST_OPERATION(FloatingToBoolean)
216
217 // CK_BooleanToSignedIntegral - Convert a boolean to -1 or 0 for true and
218 // false, respectively.
219 CAST_OPERATION(BooleanToSignedIntegral)
220
221 /// CK_FloatingCast - Casting between floating types of different size.
222 ///    (double) f
223 ///    (float) ld
224 CAST_OPERATION(FloatingCast)
225
226 /// CK_CPointerToObjCPointerCast - Casting a C pointer kind to an
227 /// Objective-C pointer.
228 CAST_OPERATION(CPointerToObjCPointerCast)
229
230 /// CK_BlockPointerToObjCPointerCast - Casting a block pointer to an
231 /// ObjC pointer.
232 CAST_OPERATION(BlockPointerToObjCPointerCast)
233
234 /// CK_AnyPointerToBlockPointerCast - Casting any non-block pointer
235 /// to a block pointer.  Block-to-block casts are bitcasts.
236 CAST_OPERATION(AnyPointerToBlockPointerCast)
237
238 /// Converting between two Objective-C object types, which
239 /// can occur when performing reference binding to an Objective-C
240 /// object.
241 CAST_OPERATION(ObjCObjectLValueCast)
242
243 /// A conversion of a floating point real to a floating point
244 /// complex of the original type.  Injects the value as the real
245 /// component with a zero imaginary component.
246 ///   float -> _Complex float
247 CAST_OPERATION(FloatingRealToComplex)
248
249 /// Converts a floating point complex to floating point real
250 /// of the source's element type.  Just discards the imaginary
251 /// component.
252 ///   _Complex long double -> long double
253 CAST_OPERATION(FloatingComplexToReal)
254
255 /// Converts a floating point complex to bool by comparing
256 /// against 0+0i.
257 CAST_OPERATION(FloatingComplexToBoolean)
258
259 /// Converts between different floating point complex types.
260 ///   _Complex float -> _Complex double
261 CAST_OPERATION(FloatingComplexCast)
262
263 /// Converts from a floating complex to an integral complex.
264 ///   _Complex float -> _Complex int
265 CAST_OPERATION(FloatingComplexToIntegralComplex)
266
267 /// Converts from an integral real to an integral complex
268 /// whose element type matches the source.  Injects the value as
269 /// the real component with a zero imaginary component.
270 ///   long -> _Complex long
271 CAST_OPERATION(IntegralRealToComplex)
272
273 /// Converts an integral complex to an integral real of the
274 /// source's element type by discarding the imaginary component.
275 ///   _Complex short -> short
276 CAST_OPERATION(IntegralComplexToReal)
277
278 /// Converts an integral complex to bool by comparing against
279 /// 0+0i.
280 CAST_OPERATION(IntegralComplexToBoolean)
281
282 /// Converts between different integral complex types.
283 ///   _Complex char -> _Complex long long
284 ///   _Complex unsigned int -> _Complex signed int
285 CAST_OPERATION(IntegralComplexCast)
286
287 /// Converts from an integral complex to a floating complex.
288 ///   _Complex unsigned -> _Complex float
289 CAST_OPERATION(IntegralComplexToFloatingComplex)
290
291 /// [ARC] Produces a retainable object pointer so that it may
292 /// be consumed, e.g. by being passed to a consuming parameter.
293 /// Calls objc_retain.
294 CAST_OPERATION(ARCProduceObject)
295
296 /// [ARC] Consumes a retainable object pointer that has just
297 /// been produced, e.g. as the return value of a retaining call.
298 /// Enters a cleanup to call objc_release at some indefinite time.
299 CAST_OPERATION(ARCConsumeObject)
300
301 /// [ARC] Reclaim a retainable object pointer object that may
302 /// have been produced and autoreleased as part of a function return
303 /// sequence.
304 CAST_OPERATION(ARCReclaimReturnedObject)
305
306 /// [ARC] Causes a value of block type to be copied to the
307 /// heap, if it is not already there.  A number of other operations
308 /// in ARC cause blocks to be copied; this is for cases where that
309 /// would not otherwise be guaranteed, such as when casting to a
310 /// non-block pointer type.
311 CAST_OPERATION(ARCExtendBlockObject)
312
313 /// Converts from _Atomic(T) to T.
314 CAST_OPERATION(AtomicToNonAtomic)
315 /// Converts from T to _Atomic(T).
316 CAST_OPERATION(NonAtomicToAtomic)
317
318 /// Causes a block literal to by copied to the heap and then
319 /// autoreleased.
320 ///
321 /// This particular cast kind is used for the conversion from a C++11
322 /// lambda expression to a block pointer.
323 CAST_OPERATION(CopyAndAutoreleaseBlockObject)
324
325 // Convert a builtin function to a function pointer; only allowed in the
326 // callee of a call expression.
327 CAST_OPERATION(BuiltinFnToFnPtr)
328
329 // Convert a zero value for OpenCL opaque types initialization (event_t,
330 // queue_t, etc.)
331 CAST_OPERATION(ZeroToOCLOpaqueType)
332
333 // Convert a pointer to a different address space.
334 CAST_OPERATION(AddressSpaceConversion)
335
336 // Convert an integer initializer to an OpenCL sampler.
337 CAST_OPERATION(IntToOCLSampler)
338
339 //===- Binary Operations  -------------------------------------------------===//
340 // Operators listed in order of precedence.
341 // Note that additions to this should also update the StmtVisitor class and
342 // BinaryOperator::getOverloadedOperator.
343
344 // [C++ 5.5] Pointer-to-member operators.
345 BINARY_OPERATION(PtrMemD, ".*")
346 BINARY_OPERATION(PtrMemI, "->*")
347 // [C99 6.5.5] Multiplicative operators.
348 BINARY_OPERATION(Mul, "*")
349 BINARY_OPERATION(Div, "/")
350 BINARY_OPERATION(Rem, "%")
351 // [C99 6.5.6] Additive operators.
352 BINARY_OPERATION(Add, "+")
353 BINARY_OPERATION(Sub, "-")
354 // [C99 6.5.7] Bitwise shift operators.
355 BINARY_OPERATION(Shl, "<<")
356 BINARY_OPERATION(Shr, ">>")
357 // C++20 [expr.spaceship] Three-way comparison operator.
358 BINARY_OPERATION(Cmp, "<=>")
359 // [C99 6.5.8] Relational operators.
360 BINARY_OPERATION(LT, "<")
361 BINARY_OPERATION(GT, ">")
362 BINARY_OPERATION(LE, "<=")
363 BINARY_OPERATION(GE, ">=")
364 // [C99 6.5.9] Equality operators.
365 BINARY_OPERATION(EQ, "==")
366 BINARY_OPERATION(NE, "!=")
367 // [C99 6.5.10] Bitwise AND operator.
368 BINARY_OPERATION(And, "&")
369 // [C99 6.5.11] Bitwise XOR operator.
370 BINARY_OPERATION(Xor, "^")
371 // [C99 6.5.12] Bitwise OR operator.
372 BINARY_OPERATION(Or, "|")
373 // [C99 6.5.13] Logical AND operator.
374 BINARY_OPERATION(LAnd, "&&")
375 // [C99 6.5.14] Logical OR operator.
376 BINARY_OPERATION(LOr, "||")
377 // [C99 6.5.16] Assignment operators.
378 BINARY_OPERATION(Assign, "=")
379 BINARY_OPERATION(MulAssign, "*=")
380 BINARY_OPERATION(DivAssign, "/=")
381 BINARY_OPERATION(RemAssign, "%=")
382 BINARY_OPERATION(AddAssign, "+=")
383 BINARY_OPERATION(SubAssign, "-=")
384 BINARY_OPERATION(ShlAssign, "<<=")
385 BINARY_OPERATION(ShrAssign, ">>=")
386 BINARY_OPERATION(AndAssign, "&=")
387 BINARY_OPERATION(XorAssign, "^=")
388 BINARY_OPERATION(OrAssign, "|=")
389 // [C99 6.5.17] Comma operator.
390 BINARY_OPERATION(Comma, ",")
391
392
393 //===- Unary Operations ---------------------------------------------------===//
394 // Note that additions to this should also update the StmtVisitor class and
395 // UnaryOperator::getOverloadedOperator.
396
397 // [C99 6.5.2.4] Postfix increment and decrement
398 UNARY_OPERATION(PostInc, "++")
399 UNARY_OPERATION(PostDec, "--")
400 // [C99 6.5.3.1] Prefix increment and decrement
401 UNARY_OPERATION(PreInc, "++")
402 UNARY_OPERATION(PreDec, "--")
403 // [C99 6.5.3.2] Address and indirection
404 UNARY_OPERATION(AddrOf, "&")
405 UNARY_OPERATION(Deref, "*")
406 // [C99 6.5.3.3] Unary arithmetic
407 UNARY_OPERATION(Plus, "+")
408 UNARY_OPERATION(Minus, "-")
409 UNARY_OPERATION(Not, "~")
410 UNARY_OPERATION(LNot, "!")
411 // "__real expr"/"__imag expr" Extension.
412 UNARY_OPERATION(Real, "__real")
413 UNARY_OPERATION(Imag, "__imag")
414 // __extension__ marker.
415 UNARY_OPERATION(Extension, "__extension__")
416 // [C++ Coroutines] co_await operator
417 UNARY_OPERATION(Coawait, "co_await")
418
419 #undef CAST_OPERATION
420 #undef BINARY_OPERATION
421 #undef UNARY_OPERATION