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 vastart, // Used to implement the va_start macro in C
31 vaend, // Used to implement the va_end macro in C
32 vacopy, // 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 // Input/Output intrinsics
66 //===------------------------------------------------------------------===//
67 // This section defines intrinsic functions used to represent Alpha
70 alpha_ctlz, // CTLZ (count leading zero): counts the number of leading
71 // zeros in the given ulong value
73 alpha_cttz, // CTTZ (count trailing zero): counts the number of trailing
74 // zeros in the given ulong value
76 alpha_ctpop, // CTPOP (count population): counts the number of ones in
77 // the given ulong value
79 alpha_umulh, // UMULH (unsigned multiply quadword high): Takes two 64-bit
80 // (ulong) values, and returns the upper 64 bits of their
81 // 128 bit product as a ulong
83 alpha_vecop, // A generic vector operation. This function is used to
84 // represent various Alpha vector/multimedia instructions.
85 // It takes 4 parameters:
86 // - the first two are 2 ulong vectors
87 // - the third (uint) is the size (in bytes) of each
88 // vector element. Thus a value of 1 means that the two
89 // input vectors consist of 8 bytes
90 // - the fourth (uint) is the operation to be performed on
91 // the vectors. Its possible values are defined in the
92 // enumeration AlphaVecOps.
94 alpha_pup, // A pack/unpack operation. This function is used to
95 // represent Alpha pack/unpack operations.
96 // It takes 3 parameters:
97 // - the first is an ulong to pack/unpack
98 // - the second (uint) is the size of each component
99 // Valid values are 2 (word) or 4 (longword)
100 // - the third (uint) is the operation to be performed.
101 // Possible values defined in the enumeration
104 alpha_bytezap, // This intrinsic function takes two parameters: a ulong
105 // (64-bit) value and a ubyte value, and returns a ulong.
106 // Each bit in the ubyte corresponds to a byte in the
107 // ulong. If the bit is 0, the byte in the output equals
108 // the corresponding byte in the input, else the byte in
109 // the output is zero.
111 alpha_bytemanip,// This intrinsic function represents all Alpha byte
112 // manipulation instructions. It takes 3 parameters:
113 // - The first two are ulong inputs to operate on
114 // - The third (uint) is the operation to perform.
115 // Possible values defined in the enumeration
118 alpha_dfpbop, // This intrinsic function represents Alpha instructions
119 // that operate on two doubles and return a double. The
120 // first two parameters are the two double values to
121 // operate on, and the third is a uint that specifies the
122 // operation to perform. Its possible values are defined in
123 // the enumeration AlphaFloatingBinaryOps
125 alpha_dfpuop, // This intrinsic function represents operation on a single
126 // double precision floating point value. The first
127 // paramters is the value and the second is the operation.
128 // The possible values for the operations are defined in the
129 // enumeration AlphaFloatingUnaryOps
131 alpha_unordered,// This intrinsic function tests if two double precision
132 // floating point values are unordered. It has two
133 // parameters: the two values to be tested. It return a
134 // boolean true if the two are unordered, else false.
136 alpha_uqtodfp, // A generic function that converts a ulong to a double.
137 // How the conversion is performed is specified by the
138 // second parameter, the possible values for which are
139 // defined in the AlphaUqToDfpOps enumeration
141 alpha_uqtosfp, // A generic function that converts a ulong to a float.
142 // How the conversion is performed is specified by the
143 // second parameter, the possible values for which are
144 // defined in the AlphaUqToSfpOps enumeration
146 alpha_dfptosq, // A generic function that converts double to a long.
147 // How the conversion is performed is specified by the
148 // second parameter, the possible values for which are
149 // defined in the AlphaDfpToSqOps enumeration
151 alpha_sfptosq, // A generic function that converts a float to a long.
152 // How the conversion is performed is specified by the
153 // second parameter, the possible values for which are
154 // defined in the AlphaSfpToSq enumeration
157 } // End Intrinsic namespace
159 } // End llvm namespace