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156 lines
7.3 KiB
C++
156 lines
7.3 KiB
C++
//===-- llvm/Instrinsics.h - LLVM Intrinsic Function Handling ---*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a set of enums which allow processing of intrinsic
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// functions. Values of these enum types are returned by
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// Function::getIntrinsicID.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_INTRINSICS_H
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#define LLVM_INTRINSICS_H
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namespace llvm {
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/// Intrinsic Namespace - This namespace contains an enum with a value for
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/// every intrinsic/builtin function known by LLVM. These enum values are
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/// returned by Function::getIntrinsicID().
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///
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namespace Intrinsic {
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enum ID {
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not_intrinsic = 0, // Must be zero
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// Varargs handling intrinsics...
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va_start, // Used to implement the va_start macro in C
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va_end, // Used to implement the va_end macro in C
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va_copy, // Used to implement the va_copy macro in C
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// Code generator intrinsics...
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returnaddress, // Yields the return address of a dynamic call frame
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frameaddress, // Yields the frame address of a dynamic call frame
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// Standard libc functions...
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memcpy, // Copy non-overlapping memory blocks
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memmove, // Copy potentially overlapping memory blocks
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memset, // Fill memory with a byte value
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// Setjmp/Longjmp intrinsics...
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setjmp, // Used to represent a setjmp call in C
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longjmp, // Used to represent a longjmp call in C
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sigsetjmp, // Used to represent a sigsetjmp call in C
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siglongjmp, // Used to represent a siglongjmp call in C
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// Debugging intrinsics...
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dbg_stoppoint, // Represents source lines and breakpointable places
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dbg_region_start, // Start of a region
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dbg_region_end, // End of a region
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dbg_func_start, // Start of a function
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dbg_declare, // Declare a local object
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// Standard libm functions...
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//===------------------------------------------------------------------===//
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// This section defines intrinsic functions used to represent Alpha
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// instructions...
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//
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alpha_ctlz, // CTLZ (count leading zero): counts the number of leading
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// zeros in the given ulong value
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alpha_cttz, // CTTZ (count trailing zero): counts the number of trailing
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// zeros in the given ulong value
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alpha_ctpop, // CTPOP (count population): counts the number of ones in
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// the given ulong value
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alpha_umulh, // UMULH (unsigned multiply quadword high): Takes two 64-bit
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// (ulong) values, and returns the upper 64 bits of their
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// 128 bit product as a ulong
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alpha_vecop, // A generic vector operation. This function is used to
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// represent various Alpha vector/multimedia instructions.
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// It takes 4 parameters:
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// - the first two are 2 ulong vectors
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// - the third (uint) is the size (in bytes) of each
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// vector element. Thus a value of 1 means that the two
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// input vectors consist of 8 bytes
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// - the fourth (uint) is the operation to be performed on
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// the vectors. Its possible values are defined in the
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// enumeration AlphaVecOps.
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alpha_pup, // A pack/unpack operation. This function is used to
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// represent Alpha pack/unpack operations.
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// It takes 3 parameters:
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// - the first is an ulong to pack/unpack
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// - the second (uint) is the size of each component
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// Valid values are 2 (word) or 4 (longword)
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// - the third (uint) is the operation to be performed.
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// Possible values defined in the enumeration
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// AlphaPupOps
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alpha_bytezap, // This intrinsic function takes two parameters: a ulong
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// (64-bit) value and a ubyte value, and returns a ulong.
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// Each bit in the ubyte corresponds to a byte in the
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// ulong. If the bit is 0, the byte in the output equals
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// the corresponding byte in the input, else the byte in
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// the output is zero.
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alpha_bytemanip,// This intrinsic function represents all Alpha byte
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// manipulation instructions. It takes 3 parameters:
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// - The first two are ulong inputs to operate on
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// - The third (uint) is the operation to perform.
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// Possible values defined in the enumeration
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// AlphaByteManipOps
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alpha_dfpbop, // This intrinsic function represents Alpha instructions
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// that operate on two doubles and return a double. The
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// first two parameters are the two double values to
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// operate on, and the third is a uint that specifies the
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// operation to perform. Its possible values are defined in
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// the enumeration AlphaFloatingBinaryOps
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alpha_dfpuop, // This intrinsic function represents operation on a single
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// double precision floating point value. The first
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// paramters is the value and the second is the operation.
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// The possible values for the operations are defined in the
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// enumeration AlphaFloatingUnaryOps
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alpha_unordered,// This intrinsic function tests if two double precision
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// floating point values are unordered. It has two
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// parameters: the two values to be tested. It return a
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// boolean true if the two are unordered, else false.
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alpha_uqtodfp, // A generic function that converts a ulong to a double.
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// How the conversion is performed is specified by the
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// second parameter, the possible values for which are
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// defined in the AlphaUqToDfpOps enumeration
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alpha_uqtosfp, // A generic function that converts a ulong to a float.
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// How the conversion is performed is specified by the
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// second parameter, the possible values for which are
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// defined in the AlphaUqToSfpOps enumeration
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alpha_dfptosq, // A generic function that converts double to a long.
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// How the conversion is performed is specified by the
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// second parameter, the possible values for which are
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// defined in the AlphaDfpToSqOps enumeration
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alpha_sfptosq, // A generic function that converts a float to a long.
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// How the conversion is performed is specified by the
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// second parameter, the possible values for which are
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// defined in the AlphaSfpToSq enumeration
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};
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} // End Intrinsic namespace
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} // End llvm namespace
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#endif
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