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