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 //===------------------------------------------------------------------===//
48 // This section defines intrinsic functions used to represent Alpha
51 alpha_ctlz, // CTLZ (count leading zero): counts the number of leading
52 // zeros in the given ulong value
54 alpha_cttz, // CTTZ (count trailing zero): counts the number of trailing
55 // zeros in the given ulong value
57 alpha_ctpop, // CTPOP (count population): counts the number of ones in
58 // the given ulong value
60 alpha_umulh, // UMULH (unsigned multiply quadword high): Takes two 64-bit
61 // (ulong) values, and returns the upper 64 bits of their
62 // 128 bit product as a ulong
64 alpha_vecop, // A generic vector operation. This function is used to
65 // represent various Alpha vector/multimedia instructions.
66 // It takes 4 parameters:
67 // - the first two are 2 ulong vectors
68 // - the third (uint) is the size (in bytes) of each
69 // vector element. Thus a value of 1 means that the two
70 // input vectors consist of 8 bytes
71 // - the fourth (uint) is the operation to be performed on
72 // the vectors. Its possible values are defined in the
73 // enumeration AlphaVecOps.
75 alpha_pup, // A pack/unpack operation. This function is used to
76 // represent Alpha pack/unpack operations.
77 // It takes 3 parameters:
78 // - the first is an ulong to pack/unpack
79 // - the second (uint) is the size of each component
80 // Valid values are 2 (word) or 4 (longword)
81 // - the third (uint) is the operation to be performed.
82 // Possible values defined in the enumeration
85 alpha_bytezap, // This intrinsic function takes two parameters: a ulong
86 // (64-bit) value and a ubyte value, and returns a ulong.
87 // Each bit in the ubyte corresponds to a byte in the
88 // ulong. If the bit is 0, the byte in the output equals
89 // the corresponding byte in the input, else the byte in
90 // the output is zero.
92 alpha_bytemanip,// This intrinsic function represents all Alpha byte
93 // manipulation instructions. It takes 3 parameters:
94 // - The first two are ulong inputs to operate on
95 // - The third (uint) is the operation to perform.
96 // Possible values defined in the enumeration
99 alpha_dfpbop, // This intrinsic function represents Alpha instructions
100 // that operate on two doubles and return a double. The
101 // first two parameters are the two double values to
102 // operate on, and the third is a uint that specifies the
103 // operation to perform. Its possible values are defined in
104 // the enumeration AlphaFloatingBinaryOps
106 alpha_dfpuop, // This intrinsic function represents operation on a single
107 // double precision floating point value. The first
108 // paramters is the value and the second is the operation.
109 // The possible values for the operations are defined in the
110 // enumeration AlphaFloatingUnaryOps
112 alpha_unordered,// This intrinsic function tests if two double precision
113 // floating point values are unordered. It has two
114 // parameters: the two values to be tested. It return a
115 // boolean true if the two are unordered, else false.
117 alpha_uqtodfp, // A generic function that converts a ulong to a double.
118 // How the conversion is performed is specified by the
119 // second parameter, the possible values for which are
120 // defined in the AlphaUqToDfpOps enumeration
122 alpha_uqtosfp, // A generic function that converts a ulong to a float.
123 // How the conversion is performed is specified by the
124 // second parameter, the possible values for which are
125 // defined in the AlphaUqToSfpOps enumeration
127 alpha_dfptosq, // A generic function that converts double to a long.
128 // How the conversion is performed is specified by the
129 // second parameter, the possible values for which are
130 // defined in the AlphaDfpToSqOps enumeration
132 alpha_sfptosq, // A generic function that converts a float to a long.
133 // How the conversion is performed is specified by the
134 // second parameter, the possible values for which are
135 // defined in the AlphaSfpToSq enumeration
138 } // End Intrinsic namespace
140 } // End llvm namespace