//===--- Builtins.def - Builtin function info database ----------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file was developed by Chris Lattner and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the standard builtin function database.  Users of this file
// must define the BUILTIN macro to make use of this information.
//
//===----------------------------------------------------------------------===//

// FIXME: this needs to be the full list supported by GCC.  Right now, I'm just
// adding stuff on demand.
//
// FIXME: This should really be a .td file, but that requires modifying tblgen.
// Perhaps tblgen should have plugins.

// The first value provided to the macro specifies the function name of the
// builtin, and results in a clang::builtin::BIXX enum value for XX.

// The second value provided to the macro specifies the type of the function
// (result value, then each argument) as follows:
//  v -> void
//  c -> char
//  s -> short
//  i -> int
//  f -> float
//  d -> double
//  z -> size_t
//  F -> constant CFString
//  a -> __builtin_va_list
//  V -> Vector, following num elements and a base type.
//  . -> "...".  This may only occur at the end of the function list.
//
// Types maybe prefixed with the following modifiers:
//  L  -> long (e.g. Li for 'long int')
//  LL -> long long
//  S  -> signed
//  U  -> unsigned
//
// Types may be postfixed with the following modifiers:
// * -> pointer
// & -> reference
// C -> const

// The third value provided to the macro specifies information about attributes
// of the function.  These must be kept in sync with the predicates in the
// Builtin::Context class.  Currently we have:
//  n -> nothrow
//  c -> const
//  F -> this is a libc/libm function with a '__builtin_' prefix added.

// Standard libc/libm functions:
BUILTIN(__builtin_inf  , "d"   , "nc")
BUILTIN(__builtin_inff , "f"   , "nc")
BUILTIN(__builtin_infl , "Ld"  , "nc")
BUILTIN(__builtin_abs  , "ii"  , "ncF")
BUILTIN(__builtin_fabs , "dd"  , "ncF")
BUILTIN(__builtin_fabsf, "ff"  , "ncF")
BUILTIN(__builtin_fabsl, "LdLd", "ncF")

// FP Comparisons.
BUILTIN(__builtin_isgreater     , "i.", "nc")
BUILTIN(__builtin_isgreaterequal, "i.", "nc")
BUILTIN(__builtin_isless        , "i.", "nc")
BUILTIN(__builtin_islessequal   , "i.", "nc")
BUILTIN(__builtin_islessgreater , "i.", "nc")
BUILTIN(__builtin_isunordered   , "i.", "nc")

// Builtins for arithmetic.
BUILTIN(__builtin_clz  , "iUi"  , "nc")
BUILTIN(__builtin_clzl , "iULi" , "nc")
BUILTIN(__builtin_clzll, "iULLi", "nc")
// TODO: int clzimax(uintmax_t)
BUILTIN(__builtin_ctz  , "iUi"  , "nc")
BUILTIN(__builtin_ctzl , "iULi" , "nc")
BUILTIN(__builtin_ctzll, "iULLi", "nc")
// TODO: int ctzimax(uintmax_t)

// FIXME: These type signatures are not correct for targets with int != 32-bits
// or with ULL != 64-bits.
BUILTIN(__builtin_bswap32, "UiUi", "nc")
BUILTIN(__builtin_bswap64, "ULLiULLi", "nc")

// Random GCC builtins
BUILTIN(__builtin_constant_p, "UsUs", "nc")
BUILTIN(__builtin_classify_type, "i.", "nc")
BUILTIN(__builtin___CFStringMakeConstantString, "FC*cC*", "nc")
BUILTIN(__builtin_va_start, "va&.", "n")
BUILTIN(__builtin_va_end, "va&", "n")
BUILTIN(__builtin_va_copy, "va&a", "n")
BUILTIN(__builtin_memcpy, "v*v*vC*z", "n")
BUILTIN(__builtin_expect, "iii"   , "nc")

BUILTIN(__builtin_alloca, "v*z"   , "n")

#undef BUILTIN
