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 //===--- OperationKinds.def - Operations Database ---------------*- C++ -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 // This file enumerates the different kinds of operations that can be
 // performed by various expressions.
 //
 //===----------------------------------------------------------------------===//
 //
 /// @file OperationKinds.def
 ///
 /// In this file, each of the C/C++ operations is enumerated CAST_OPERATION,
 /// BINARY_OPERATION or UNARY_OPERATION macro, each of which can be specified by
 /// the code including this file.
 ///
 /// Macros had one or two arguments:
 ///
 /// Name: The name of the operation. Name (prefixed with CK_, UO_ or BO_) will
 /// be the name of the corresponding enumerator (see OperationsKinds.h).
 ///
 /// Spelling: A string that provides a canonical spelling for the operation.
 
 #ifndef CAST_OPERATION
 #  define CAST_OPERATION(Name)
 #endif
 
 #ifndef BINARY_OPERATION
 #  define BINARY_OPERATION(Name, Spelling)
 #endif
 
 #ifndef UNARY_OPERATION
 #  define UNARY_OPERATION(Name, Spelling)
 #endif
 
 //===- Cast Operations  ---------------------------------------------------===//
 
 /// CK_Dependent - A conversion which cannot yet be analyzed because
 /// either the expression or target type is dependent.  These are
 /// created only for explicit casts; dependent ASTs aren't required
 /// to even approximately type-check.
 ///   (T*) malloc(sizeof(T))
 ///   reinterpret_cast<intptr_t>(A<T>::alloc());
 CAST_OPERATION(Dependent)
 
 /// CK_BitCast - A conversion which causes a bit pattern of one type
 /// to be reinterpreted as a bit pattern of another type.  Generally
 /// the operands must have equivalent size and unrelated types.
 ///
 /// The pointer conversion char* -> int* is a bitcast.  A conversion
 /// from any pointer type to a C pointer type is a bitcast unless
 /// it's actually BaseToDerived or DerivedToBase.  A conversion to a
 /// block pointer or ObjC pointer type is a bitcast only if the
 /// operand has the same type kind; otherwise, it's one of the
 /// specialized casts below.
 ///
 /// Vector coercions are bitcasts.
 CAST_OPERATION(BitCast)
 
 /// CK_LValueBitCast - A conversion which reinterprets the address of
 /// an l-value as an l-value of a different kind.  Used for
 /// reinterpret_casts of l-value expressions to reference types.
 ///    bool b; reinterpret_cast<char&>(b) = 'a';
 CAST_OPERATION(LValueBitCast)
 
 /// CK_LValueToRValueBitCast - A conversion that causes us to reinterpret the
 /// object representation of an lvalue as an rvalue. Created by
 /// __builtin_bit_cast.
 CAST_OPERATION(LValueToRValueBitCast)
 
 /// CK_LValueToRValue - A conversion which causes the extraction of
 /// an r-value from the operand gl-value.  The result of an r-value
 /// conversion is always unqualified.
 CAST_OPERATION(LValueToRValue)
 
 /// CK_NoOp - A conversion which does not affect the type other than
 /// (possibly) adding qualifiers or removing noexcept.
 ///   int    -> int
 ///   char** -> const char * const *
 ///   int[1] -> int[]
 ///   void () noexcept -> void ()
 CAST_OPERATION(NoOp)
 
 /// CK_BaseToDerived - A conversion from a C++ class pointer/reference
 /// to a derived class pointer/reference.
 ///   B *b = static_cast<B*>(a);
 CAST_OPERATION(BaseToDerived)
 
 /// CK_DerivedToBase - A conversion from a C++ class pointer
 /// to a base class pointer.
 ///   A *a = new B();
 CAST_OPERATION(DerivedToBase)
 
 /// CK_UncheckedDerivedToBase - A conversion from a C++ class
 /// pointer/reference to a base class that can assume that the
 /// derived pointer is not null.
 ///   const A &a = B();
 ///   b->method_from_a();
 CAST_OPERATION(UncheckedDerivedToBase)
 
 /// CK_Dynamic - A C++ dynamic_cast.
 CAST_OPERATION(Dynamic)
 
 /// CK_ToUnion - The GCC cast-to-union extension.
 ///   int   -> union { int x; float y; }
 ///   float -> union { int x; float y; }
 CAST_OPERATION(ToUnion)
 
 /// CK_ArrayToPointerDecay - Array to pointer decay.
 ///   int[10] -> int*
 ///   char[5][6] -> char(*)[6]
 CAST_OPERATION(ArrayToPointerDecay)
 
 /// CK_FunctionToPointerDecay - Function to pointer decay.
 ///   void(int) -> void(*)(int)
 CAST_OPERATION(FunctionToPointerDecay)
 
 /// CK_NullToPointer - Null pointer constant to pointer, ObjC
 /// pointer, or block pointer.
 ///   (void*) 0
 ///   void (^block)() = 0;
 CAST_OPERATION(NullToPointer)
 
 /// CK_NullToMemberPointer - Null pointer constant to member pointer.
 ///   int A::*mptr = 0;
 ///   int (A::*fptr)(int) = nullptr;
 CAST_OPERATION(NullToMemberPointer)
 
 /// CK_BaseToDerivedMemberPointer - Member pointer in base class to
 /// member pointer in derived class.
 ///   int B::*mptr = &A::member;
 CAST_OPERATION(BaseToDerivedMemberPointer)
 
 /// CK_DerivedToBaseMemberPointer - Member pointer in derived class to
 /// member pointer in base class.
 ///   int A::*mptr = static_cast<int A::*>(&B::member);
 CAST_OPERATION(DerivedToBaseMemberPointer)
 
 /// CK_MemberPointerToBoolean - Member pointer to boolean.  A check
 /// against the null member pointer.
 CAST_OPERATION(MemberPointerToBoolean)
 
 /// CK_ReinterpretMemberPointer - Reinterpret a member pointer as a
 /// different kind of member pointer.  C++ forbids this from
 /// crossing between function and object types, but otherwise does
 /// not restrict it.  However, the only operation that is permitted
 /// on a "punned" member pointer is casting it back to the original
 /// type, which is required to be a lossless operation (although
 /// many ABIs do not guarantee this on all possible intermediate types).
 CAST_OPERATION(ReinterpretMemberPointer)
 
 /// CK_UserDefinedConversion - Conversion using a user defined type
 /// conversion function.
 ///    struct A { operator int(); }; int i = int(A());
 CAST_OPERATION(UserDefinedConversion)
 
 /// CK_ConstructorConversion - Conversion by constructor.
 ///    struct A { A(int); }; A a = A(10);
 CAST_OPERATION(ConstructorConversion)
 
 /// CK_IntegralToPointer - Integral to pointer.  A special kind of
 /// reinterpreting conversion.  Applies to normal, ObjC, and block
 /// pointers.
 ///    (char*) 0x1001aab0
 ///    reinterpret_cast<int*>(0)
 CAST_OPERATION(IntegralToPointer)
 
 /// CK_PointerToIntegral - Pointer to integral.  A special kind of
 /// reinterpreting conversion.  Applies to normal, ObjC, and block
 /// pointers.
 ///    (intptr_t) "help!"
 CAST_OPERATION(PointerToIntegral)
 
 /// CK_PointerToBoolean - Pointer to boolean conversion.  A check
 /// against null.  Applies to normal, ObjC, and block pointers.
 CAST_OPERATION(PointerToBoolean)
 
 /// CK_ToVoid - Cast to void, discarding the computed value.
 ///    (void) malloc(2048)
 CAST_OPERATION(ToVoid)
 
 /// CK_MatrixCast - A cast between matrix types of the same dimensions.
 CAST_OPERATION(MatrixCast)
 
 /// CK_VectorSplat - A conversion from an arithmetic type to a
 /// vector of that element type.  Fills all elements ("splats") with
 /// the source value.
 ///    __attribute__((ext_vector_type(4))) int v = 5;
 CAST_OPERATION(VectorSplat)
 
 /// CK_IntegralCast - A cast between integral types (other than to
 /// boolean).  Variously a bitcast, a truncation, a sign-extension,
 /// or a zero-extension.
 ///    long l = 5;
 ///    (unsigned) i
 CAST_OPERATION(IntegralCast)
 
 /// CK_IntegralToBoolean - Integral to boolean.  A check against zero.
 ///    (bool) i
 CAST_OPERATION(IntegralToBoolean)
 
 /// CK_IntegralToFloating - Integral to floating point.
 ///    float f = i;
 CAST_OPERATION(IntegralToFloating)
 
 /// CK_FloatingToFixedPoint - Floating to fixed point.
 ///    _Accum a = f;
 CAST_OPERATION(FloatingToFixedPoint)
 
 /// CK_FixedPointToFloating - Fixed point to floating.
 ///    (float) 2.5k
 CAST_OPERATION(FixedPointToFloating)
 
 /// CK_FixedPointCast - Fixed point to fixed point.
 ///    (_Accum) 0.5r
 CAST_OPERATION(FixedPointCast)
 
 /// CK_FixedPointToIntegral - Fixed point to integral.
 ///    (int) 2.0k
 CAST_OPERATION(FixedPointToIntegral)
 
 /// CK_IntegralToFixedPoint - Integral to a fixed point.
 ///    (_Accum) 2
 CAST_OPERATION(IntegralToFixedPoint)
 
 /// CK_FixedPointToBoolean - Fixed point to boolean.
 ///    (bool) 0.5r
 CAST_OPERATION(FixedPointToBoolean)
 
 /// CK_FloatingToIntegral - Floating point to integral.  Rounds
 /// towards zero, discarding any fractional component.
 ///    (int) f
 CAST_OPERATION(FloatingToIntegral)
 
 /// CK_FloatingToBoolean - Floating point to boolean.
 ///    (bool) f
 CAST_OPERATION(FloatingToBoolean)
 
 // CK_BooleanToSignedIntegral - Convert a boolean to -1 or 0 for true and
 // false, respectively.
 CAST_OPERATION(BooleanToSignedIntegral)
 
 /// CK_FloatingCast - Casting between floating types of different size.
 ///    (double) f
 ///    (float) ld
 CAST_OPERATION(FloatingCast)
 
 /// CK_CPointerToObjCPointerCast - Casting a C pointer kind to an
 /// Objective-C pointer.
 CAST_OPERATION(CPointerToObjCPointerCast)
 
 /// CK_BlockPointerToObjCPointerCast - Casting a block pointer to an
 /// ObjC pointer.
 CAST_OPERATION(BlockPointerToObjCPointerCast)
 
 /// CK_AnyPointerToBlockPointerCast - Casting any non-block pointer
 /// to a block pointer.  Block-to-block casts are bitcasts.
 CAST_OPERATION(AnyPointerToBlockPointerCast)
 
 /// Converting between two Objective-C object types, which
 /// can occur when performing reference binding to an Objective-C
 /// object.
 CAST_OPERATION(ObjCObjectLValueCast)
 
 /// A conversion of a floating point real to a floating point
 /// complex of the original type.  Injects the value as the real
 /// component with a zero imaginary component.
 ///   float -> _Complex float
 CAST_OPERATION(FloatingRealToComplex)
 
 /// Converts a floating point complex to floating point real
 /// of the source's element type.  Just discards the imaginary
 /// component.
 ///   _Complex long double -> long double
 CAST_OPERATION(FloatingComplexToReal)
 
 /// Converts a floating point complex to bool by comparing
 /// against 0+0i.
 CAST_OPERATION(FloatingComplexToBoolean)
 
 /// Converts between different floating point complex types.
 ///   _Complex float -> _Complex double
 CAST_OPERATION(FloatingComplexCast)
 
 /// Converts from a floating complex to an integral complex.
 ///   _Complex float -> _Complex int
 CAST_OPERATION(FloatingComplexToIntegralComplex)
 
 /// Converts from an integral real to an integral complex
 /// whose element type matches the source.  Injects the value as
 /// the real component with a zero imaginary component.
 ///   long -> _Complex long
 CAST_OPERATION(IntegralRealToComplex)
 
 /// Converts an integral complex to an integral real of the
 /// source's element type by discarding the imaginary component.
 ///   _Complex short -> short
 CAST_OPERATION(IntegralComplexToReal)
 
 /// Converts an integral complex to bool by comparing against
 /// 0+0i.
 CAST_OPERATION(IntegralComplexToBoolean)
 
 /// Converts between different integral complex types.
 ///   _Complex char -> _Complex long long
 ///   _Complex unsigned int -> _Complex signed int
 CAST_OPERATION(IntegralComplexCast)
 
 /// Converts from an integral complex to a floating complex.
 ///   _Complex unsigned -> _Complex float
 CAST_OPERATION(IntegralComplexToFloatingComplex)
 
 /// [ARC] Produces a retainable object pointer so that it may
 /// be consumed, e.g. by being passed to a consuming parameter.
 /// Calls objc_retain.
 CAST_OPERATION(ARCProduceObject)
 
 /// [ARC] Consumes a retainable object pointer that has just
 /// been produced, e.g. as the return value of a retaining call.
 /// Enters a cleanup to call objc_release at some indefinite time.
 CAST_OPERATION(ARCConsumeObject)
 
 /// [ARC] Reclaim a retainable object pointer object that may
 /// have been produced and autoreleased as part of a function return
 /// sequence.
 CAST_OPERATION(ARCReclaimReturnedObject)
 
 /// [ARC] Causes a value of block type to be copied to the
 /// heap, if it is not already there.  A number of other operations
 /// in ARC cause blocks to be copied; this is for cases where that
 /// would not otherwise be guaranteed, such as when casting to a
 /// non-block pointer type.
 CAST_OPERATION(ARCExtendBlockObject)
 
 /// Converts from _Atomic(T) to T.
 CAST_OPERATION(AtomicToNonAtomic)
 /// Converts from T to _Atomic(T).
 CAST_OPERATION(NonAtomicToAtomic)
 
 /// Causes a block literal to by copied to the heap and then
 /// autoreleased.
 ///
 /// This particular cast kind is used for the conversion from a C++11
 /// lambda expression to a block pointer.
 CAST_OPERATION(CopyAndAutoreleaseBlockObject)
 
 // Convert a builtin function to a function pointer; only allowed in the
 // callee of a call expression.
 CAST_OPERATION(BuiltinFnToFnPtr)
 
 // Convert a zero value for OpenCL opaque types initialization (event_t,
 // queue_t, etc.)
 CAST_OPERATION(ZeroToOCLOpaqueType)
 
 // Convert a pointer to a different address space.
 CAST_OPERATION(AddressSpaceConversion)
 
 // Convert an integer initializer to an OpenCL sampler.
 CAST_OPERATION(IntToOCLSampler)
 
 // Truncate a vector type by dropping elements from the end (HLSL only).
 CAST_OPERATION(HLSLVectorTruncation)
 
 // Non-decaying array RValue cast (HLSL only).
 CAST_OPERATION(HLSLArrayRValue)
 
 //===- Binary Operations  -------------------------------------------------===//
 // Operators listed in order of precedence.
 // Note that additions to this should also update the StmtVisitor class,
 // BinaryOperator::getOverloadedOperator and CXBinaryOperatorKind enum.
 
 // [C++ 5.5] Pointer-to-member operators.
 BINARY_OPERATION(PtrMemD, ".*")
 BINARY_OPERATION(PtrMemI, "->*")
 // [C99 6.5.5] Multiplicative operators.
 BINARY_OPERATION(Mul, "*")
 BINARY_OPERATION(Div, "/")
 BINARY_OPERATION(Rem, "%")
 // [C99 6.5.6] Additive operators.
 BINARY_OPERATION(Add, "+")
 BINARY_OPERATION(Sub, "-")
 // [C99 6.5.7] Bitwise shift operators.
 BINARY_OPERATION(Shl, "<<")
 BINARY_OPERATION(Shr, ">>")
 // C++20 [expr.spaceship] Three-way comparison operator.
 BINARY_OPERATION(Cmp, "<=>")
 // [C99 6.5.8] Relational operators.
 BINARY_OPERATION(LT, "<")
 BINARY_OPERATION(GT, ">")
 BINARY_OPERATION(LE, "<=")
 BINARY_OPERATION(GE, ">=")
 // [C99 6.5.9] Equality operators.
 BINARY_OPERATION(EQ, "==")
 BINARY_OPERATION(NE, "!=")
 // [C99 6.5.10] Bitwise AND operator.
 BINARY_OPERATION(And, "&")
 // [C99 6.5.11] Bitwise XOR operator.
 BINARY_OPERATION(Xor, "^")
 // [C99 6.5.12] Bitwise OR operator.
 BINARY_OPERATION(Or, "|")
 // [C99 6.5.13] Logical AND operator.
 BINARY_OPERATION(LAnd, "&&")
 // [C99 6.5.14] Logical OR operator.
 BINARY_OPERATION(LOr, "||")
 // [C99 6.5.16] Assignment operators.
 BINARY_OPERATION(Assign, "=")
 BINARY_OPERATION(MulAssign, "*=")
 BINARY_OPERATION(DivAssign, "/=")
 BINARY_OPERATION(RemAssign, "%=")
 BINARY_OPERATION(AddAssign, "+=")
 BINARY_OPERATION(SubAssign, "-=")
 BINARY_OPERATION(ShlAssign, "<<=")
 BINARY_OPERATION(ShrAssign, ">>=")
 BINARY_OPERATION(AndAssign, "&=")
 BINARY_OPERATION(XorAssign, "^=")
 BINARY_OPERATION(OrAssign, "|=")
 // [C99 6.5.17] Comma operator.
 BINARY_OPERATION(Comma, ",")
 
 
 //===- Unary Operations ---------------------------------------------------===//
 // Note that additions to this should also update the StmtVisitor class,
 // UnaryOperator::getOverloadedOperator and CXUnaryOperatorKind enum.
 
 // [C99 6.5.2.4] Postfix increment and decrement
 UNARY_OPERATION(PostInc, "++")
 UNARY_OPERATION(PostDec, "--")
 // [C99 6.5.3.1] Prefix increment and decrement
 UNARY_OPERATION(PreInc, "++")
 UNARY_OPERATION(PreDec, "--")
 // [C99 6.5.3.2] Address and indirection
 UNARY_OPERATION(AddrOf, "&")
 UNARY_OPERATION(Deref, "*")
 // [C99 6.5.3.3] Unary arithmetic
 UNARY_OPERATION(Plus, "+")
 UNARY_OPERATION(Minus, "-")
 UNARY_OPERATION(Not, "~")
 UNARY_OPERATION(LNot, "!")
 // "__real expr"/"__imag expr" Extension.
 UNARY_OPERATION(Real, "__real")
 UNARY_OPERATION(Imag, "__imag")
 // __extension__ marker.
 UNARY_OPERATION(Extension, "__extension__")
 // [C++ Coroutines] co_await operator
 UNARY_OPERATION(Coawait, "co_await")
 
 #undef CAST_OPERATION
 #undef BINARY_OPERATION
 #undef UNARY_OPERATION

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