1 //===-- llvm/Instrinsics.h - LLVM Intrinsic Function Handling ---*- 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 a set of enums which allow processing of intrinsic
11 // functions. Values of these enum types are returned by
12 // Function::getIntrinsicID.
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_INTRINSICS_H
17 #define LLVM_INTRINSICS_H
21 /// Intrinsic Namespace - This namespace contains an enum with a value for
22 /// every intrinsic/builtin function known by LLVM. These enum values are
23 /// returned by Function::getIntrinsicID().
27 not_intrinsic = 0, // Must be zero
29 // Varargs handling intrinsics...
30 va_start, // Used to implement the va_start macro in C
31 va_end, // Used to implement the va_end macro in C
32 va_copy, // Used to implement the va_copy macro in C
34 // Setjmp/Longjmp intrinsics...
35 setjmp, // Used to represent a setjmp call in C
36 longjmp, // Used to represent a longjmp call in C
37 sigsetjmp, // Used to represent a sigsetjmp call in C
38 siglongjmp, // Used to represent a siglongjmp call in C
40 //===------------------------------------------------------------------===//
41 // This section defines intrinsic functions used to represent Alpha
44 alpha_ctlz, // CTLZ (count leading zero): counts the number of leading
45 // zeros in the given ulong value
47 alpha_cttz, // CTTZ (count trailing zero): counts the number of trailing
48 // zeros in the given ulong value
50 alpha_ctpop, // CTPOP (count population): counts the number of ones in
51 // the given ulong value
53 alpha_umulh, // UMULH (unsigned multiply quadword high): Takes two 64-bit
54 // (ulong) values, and returns the upper 64 bits of their
55 // 128 bit product as a ulong
57 alpha_vecop, // A generic vector operation. This function is used to
58 // represent various Alpha vector/multimedia instructions.
59 // It takes 4 parameters:
60 // - the first two are 2 ulong vectors
61 // - the third (uint) is the size (in bytes) of each
62 // vector element. Thus a value of 1 means that the two
63 // input vectors consist of 8 bytes
64 // - the fourth (uint) is the operation to be performed on
65 // the vectors. Its possible values are defined in the
66 // enumeration AlphaVecOps.
68 alpha_pup, // A pack/unpack operation. This function is used to
69 // represent Alpha pack/unpack operations.
70 // It takes 3 parameters:
71 // - the first is an ulong to pack/unpack
72 // - the second (uint) is the size of each component
73 // Valid values are 2 (word) or 4 (longword)
74 // - the third (uint) is the operation to be performed.
75 // Possible values defined in the enumeration
78 alpha_bytezap, // This intrinsic function takes two parameters: a ulong
79 // (64-bit) value and a ubyte value, and returns a ulong.
80 // Each bit in the ubyte corresponds to a byte in the
81 // ulong. If the bit is 0, the byte in the output equals
82 // the corresponding byte in the input, else the byte in
83 // the output is zero.
85 alpha_bytemanip,// This intrinsic function represents all Alpha byte
86 // manipulation instructions. It takes 3 parameters:
87 // - The first two are ulong inputs to operate on
88 // - The third (uint) is the operation to perform.
89 // Possible values defined in the enumeration
92 alpha_dfpbop, // This intrinsic function represents Alpha instructions
93 // that operate on two doubles and return a double. The
94 // first two parameters are the two double values to
95 // operate on, and the third is a uint that specifies the
96 // operation to perform. Its possible values are defined in
97 // the enumeration AlphaFloatingBinaryOps
99 alpha_dfpuop, // This intrinsic function represents operation on a single
100 // double precision floating point value. The first
101 // paramters is the value and the second is the operation.
102 // The possible values for the operations are defined in the
103 // enumeration AlphaFloatingUnaryOps
105 alpha_unordered,// This intrinsic function tests if two double precision
106 // floating point values are unordered. It has two
107 // parameters: the two values to be tested. It return a
108 // boolean true if the two are unordered, else false.
110 alpha_uqtodfp, // A generic function that converts a ulong to a double.
111 // How the conversion is performed is specified by the
112 // second parameter, the possible values for which are
113 // defined in the AlphaUqToDfpOps enumeration
115 alpha_uqtosfp, // A generic function that converts a ulong to a float.
116 // How the conversion is performed is specified by the
117 // second parameter, the possible values for which are
118 // defined in the AlphaUqToSfpOps enumeration
120 alpha_dfptosq, // A generic function that converts double to a long.
121 // How the conversion is performed is specified by the
122 // second parameter, the possible values for which are
123 // defined in the AlphaDfpToSqOps enumeration
125 alpha_sfptosq, // A generic function that converts a float to a long.
126 // How the conversion is performed is specified by the
127 // second parameter, the possible values for which are
128 // defined in the AlphaSfpToSq enumeration
131 } // End Intrinsic namespace
133 } // End llvm namespace