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 // Code generator intrinsics...
35 returnaddress, // Yields the return address of a dynamic call frame
36 frameaddress, // Yields the frame address of a dynamic call frame
38 // Standard libc functions...
39 memcpy, // Copy non-overlapping memory blocks
40 memmove, // Copy potentially overlapping memory blocks
41 memset, // Fill memory with a byte value
43 // Setjmp/Longjmp intrinsics...
44 setjmp, // Used to represent a setjmp call in C
45 longjmp, // Used to represent a longjmp call in C
46 sigsetjmp, // Used to represent a sigsetjmp call in C
47 siglongjmp, // Used to represent a siglongjmp call in C
49 // Debugging intrinsics...
50 dbg_stoppoint, // Represents source lines and breakpointable places
51 dbg_region_start, // Start of a region
52 dbg_region_end, // End of a region
53 dbg_func_start, // Start of a function
54 dbg_declare, // Declare a local object
57 // Standard libm functions...
60 //===------------------------------------------------------------------===//
61 // This section defines intrinsic functions used to represent Alpha
64 alpha_ctlz, // CTLZ (count leading zero): counts the number of leading
65 // zeros in the given ulong value
67 alpha_cttz, // CTTZ (count trailing zero): counts the number of trailing
68 // zeros in the given ulong value
70 alpha_ctpop, // CTPOP (count population): counts the number of ones in
71 // the given ulong value
73 alpha_umulh, // UMULH (unsigned multiply quadword high): Takes two 64-bit
74 // (ulong) values, and returns the upper 64 bits of their
75 // 128 bit product as a ulong
77 alpha_vecop, // A generic vector operation. This function is used to
78 // represent various Alpha vector/multimedia instructions.
79 // It takes 4 parameters:
80 // - the first two are 2 ulong vectors
81 // - the third (uint) is the size (in bytes) of each
82 // vector element. Thus a value of 1 means that the two
83 // input vectors consist of 8 bytes
84 // - the fourth (uint) is the operation to be performed on
85 // the vectors. Its possible values are defined in the
86 // enumeration AlphaVecOps.
88 alpha_pup, // A pack/unpack operation. This function is used to
89 // represent Alpha pack/unpack operations.
90 // It takes 3 parameters:
91 // - the first is an ulong to pack/unpack
92 // - the second (uint) is the size of each component
93 // Valid values are 2 (word) or 4 (longword)
94 // - the third (uint) is the operation to be performed.
95 // Possible values defined in the enumeration
98 alpha_bytezap, // This intrinsic function takes two parameters: a ulong
99 // (64-bit) value and a ubyte value, and returns a ulong.
100 // Each bit in the ubyte corresponds to a byte in the
101 // ulong. If the bit is 0, the byte in the output equals
102 // the corresponding byte in the input, else the byte in
103 // the output is zero.
105 alpha_bytemanip,// This intrinsic function represents all Alpha byte
106 // manipulation instructions. It takes 3 parameters:
107 // - The first two are ulong inputs to operate on
108 // - The third (uint) is the operation to perform.
109 // Possible values defined in the enumeration
112 alpha_dfpbop, // This intrinsic function represents Alpha instructions
113 // that operate on two doubles and return a double. The
114 // first two parameters are the two double values to
115 // operate on, and the third is a uint that specifies the
116 // operation to perform. Its possible values are defined in
117 // the enumeration AlphaFloatingBinaryOps
119 alpha_dfpuop, // This intrinsic function represents operation on a single
120 // double precision floating point value. The first
121 // paramters is the value and the second is the operation.
122 // The possible values for the operations are defined in the
123 // enumeration AlphaFloatingUnaryOps
125 alpha_unordered,// This intrinsic function tests if two double precision
126 // floating point values are unordered. It has two
127 // parameters: the two values to be tested. It return a
128 // boolean true if the two are unordered, else false.
130 alpha_uqtodfp, // A generic function that converts a ulong to a double.
131 // How the conversion is performed is specified by the
132 // second parameter, the possible values for which are
133 // defined in the AlphaUqToDfpOps enumeration
135 alpha_uqtosfp, // A generic function that converts a ulong to a float.
136 // How the conversion is performed is specified by the
137 // second parameter, the possible values for which are
138 // defined in the AlphaUqToSfpOps enumeration
140 alpha_dfptosq, // A generic function that converts double to a long.
141 // How the conversion is performed is specified by the
142 // second parameter, the possible values for which are
143 // defined in the AlphaDfpToSqOps enumeration
145 alpha_sfptosq, // A generic function that converts a float to a long.
146 // How the conversion is performed is specified by the
147 // second parameter, the possible values for which are
148 // defined in the AlphaSfpToSq enumeration
151 } // End Intrinsic namespace
153 } // End llvm namespace