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 // Debugging intrinsics...
41 dbg_stoppoint, // Represents source lines and breakpointable places
42 dbg_region_start, // Start of a region
43 dbg_region_end, // End of a region
44 dbg_func_start, // Start of a function
45 dbg_declare, // Declare a local object
47 // Standard libc functions...
50 // Standard libm functions...
53 //===------------------------------------------------------------------===//
54 // This section defines intrinsic functions used to represent Alpha
57 alpha_ctlz, // CTLZ (count leading zero): counts the number of leading
58 // zeros in the given ulong value
60 alpha_cttz, // CTTZ (count trailing zero): counts the number of trailing
61 // zeros in the given ulong value
63 alpha_ctpop, // CTPOP (count population): counts the number of ones in
64 // the given ulong value
66 alpha_umulh, // UMULH (unsigned multiply quadword high): Takes two 64-bit
67 // (ulong) values, and returns the upper 64 bits of their
68 // 128 bit product as a ulong
70 alpha_vecop, // A generic vector operation. This function is used to
71 // represent various Alpha vector/multimedia instructions.
72 // It takes 4 parameters:
73 // - the first two are 2 ulong vectors
74 // - the third (uint) is the size (in bytes) of each
75 // vector element. Thus a value of 1 means that the two
76 // input vectors consist of 8 bytes
77 // - the fourth (uint) is the operation to be performed on
78 // the vectors. Its possible values are defined in the
79 // enumeration AlphaVecOps.
81 alpha_pup, // A pack/unpack operation. This function is used to
82 // represent Alpha pack/unpack operations.
83 // It takes 3 parameters:
84 // - the first is an ulong to pack/unpack
85 // - the second (uint) is the size of each component
86 // Valid values are 2 (word) or 4 (longword)
87 // - the third (uint) is the operation to be performed.
88 // Possible values defined in the enumeration
91 alpha_bytezap, // This intrinsic function takes two parameters: a ulong
92 // (64-bit) value and a ubyte value, and returns a ulong.
93 // Each bit in the ubyte corresponds to a byte in the
94 // ulong. If the bit is 0, the byte in the output equals
95 // the corresponding byte in the input, else the byte in
96 // the output is zero.
98 alpha_bytemanip,// This intrinsic function represents all Alpha byte
99 // manipulation instructions. It takes 3 parameters:
100 // - The first two are ulong inputs to operate on
101 // - The third (uint) is the operation to perform.
102 // Possible values defined in the enumeration
105 alpha_dfpbop, // This intrinsic function represents Alpha instructions
106 // that operate on two doubles and return a double. The
107 // first two parameters are the two double values to
108 // operate on, and the third is a uint that specifies the
109 // operation to perform. Its possible values are defined in
110 // the enumeration AlphaFloatingBinaryOps
112 alpha_dfpuop, // This intrinsic function represents operation on a single
113 // double precision floating point value. The first
114 // paramters is the value and the second is the operation.
115 // The possible values for the operations are defined in the
116 // enumeration AlphaFloatingUnaryOps
118 alpha_unordered,// This intrinsic function tests if two double precision
119 // floating point values are unordered. It has two
120 // parameters: the two values to be tested. It return a
121 // boolean true if the two are unordered, else false.
123 alpha_uqtodfp, // A generic function that converts a ulong to a double.
124 // How the conversion is performed is specified by the
125 // second parameter, the possible values for which are
126 // defined in the AlphaUqToDfpOps enumeration
128 alpha_uqtosfp, // A generic function that converts a ulong to a float.
129 // How the conversion is performed is specified by the
130 // second parameter, the possible values for which are
131 // defined in the AlphaUqToSfpOps enumeration
133 alpha_dfptosq, // A generic function that converts double to a long.
134 // How the conversion is performed is specified by the
135 // second parameter, the possible values for which are
136 // defined in the AlphaDfpToSqOps enumeration
138 alpha_sfptosq, // A generic function that converts a float to a long.
139 // How the conversion is performed is specified by the
140 // second parameter, the possible values for which are
141 // defined in the AlphaSfpToSq enumeration
144 } // End Intrinsic namespace
146 } // End llvm namespace