This is doc/gcc.info, produced by makeinfo version 4.5 from doc/gcc.texi. INFO-DIR-SECTION Programming START-INFO-DIR-ENTRY * gcc: (gcc). The GNU Compiler Collection. END-INFO-DIR-ENTRY This file documents the use of the GNU compilers. Published by the Free Software Foundation 59 Temple Place - Suite 330 Boston, MA 02111-1307 USA Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with the Invariant Sections being "GNU General Public License" and "Funding Free Software", the Front-Cover texts being (a) (see below), and with the Back-Cover Texts being (b) (see below). A copy of the license is included in the section entitled "GNU Free Documentation License". (a) The FSF's Front-Cover Text is: A GNU Manual (b) The FSF's Back-Cover Text is: You have freedom to copy and modify this GNU Manual, like GNU software. Copies published by the Free Software Foundation raise funds for GNU development.  File: gcc.info, Node: X86 Built-in Functions, Next: PowerPC AltiVec Built-in Functions, Up: Target Builtins X86 Built-in Functions ---------------------- These built-in functions are available for the i386 and x86-64 family of computers, depending on the command-line switches used. The following machine modes are available for use with MMX built-in functions (*note Vector Extensions::): `V2SI' for a vector of two 32-bit integers, `V4HI' for a vector of four 16-bit integers, and `V8QI' for a vector of eight 8-bit integers. Some of the built-in functions operate on MMX registers as a whole 64-bit entity, these use `DI' as their mode. If 3Dnow extensions are enabled, `V2SF' is used as a mode for a vector of two 32-bit floating point values. If SSE extensions are enabled, `V4SF' is used for a vector of four 32-bit floating point values. Some instructions use a vector of four 32-bit integers, these use `V4SI'. Finally, some instructions operate on an entire vector register, interpreting it as a 128-bit integer, these use mode `TI'. The following built-in functions are made available by `-mmmx'. All of them generate the machine instruction that is part of the name. v8qi __builtin_ia32_paddb (v8qi, v8qi) v4hi __builtin_ia32_paddw (v4hi, v4hi) v2si __builtin_ia32_paddd (v2si, v2si) v8qi __builtin_ia32_psubb (v8qi, v8qi) v4hi __builtin_ia32_psubw (v4hi, v4hi) v2si __builtin_ia32_psubd (v2si, v2si) v8qi __builtin_ia32_paddsb (v8qi, v8qi) v4hi __builtin_ia32_paddsw (v4hi, v4hi) v8qi __builtin_ia32_psubsb (v8qi, v8qi) v4hi __builtin_ia32_psubsw (v4hi, v4hi) v8qi __builtin_ia32_paddusb (v8qi, v8qi) v4hi __builtin_ia32_paddusw (v4hi, v4hi) v8qi __builtin_ia32_psubusb (v8qi, v8qi) v4hi __builtin_ia32_psubusw (v4hi, v4hi) v4hi __builtin_ia32_pmullw (v4hi, v4hi) v4hi __builtin_ia32_pmulhw (v4hi, v4hi) di __builtin_ia32_pand (di, di) di __builtin_ia32_pandn (di,di) di __builtin_ia32_por (di, di) di __builtin_ia32_pxor (di, di) v8qi __builtin_ia32_pcmpeqb (v8qi, v8qi) v4hi __builtin_ia32_pcmpeqw (v4hi, v4hi) v2si __builtin_ia32_pcmpeqd (v2si, v2si) v8qi __builtin_ia32_pcmpgtb (v8qi, v8qi) v4hi __builtin_ia32_pcmpgtw (v4hi, v4hi) v2si __builtin_ia32_pcmpgtd (v2si, v2si) v8qi __builtin_ia32_punpckhbw (v8qi, v8qi) v4hi __builtin_ia32_punpckhwd (v4hi, v4hi) v2si __builtin_ia32_punpckhdq (v2si, v2si) v8qi __builtin_ia32_punpcklbw (v8qi, v8qi) v4hi __builtin_ia32_punpcklwd (v4hi, v4hi) v2si __builtin_ia32_punpckldq (v2si, v2si) v8qi __builtin_ia32_packsswb (v4hi, v4hi) v4hi __builtin_ia32_packssdw (v2si, v2si) v8qi __builtin_ia32_packuswb (v4hi, v4hi) The following built-in functions are made available either with `-msse', or with a combination of `-m3dnow' and `-march=athlon'. All of them generate the machine instruction that is part of the name. v4hi __builtin_ia32_pmulhuw (v4hi, v4hi) v8qi __builtin_ia32_pavgb (v8qi, v8qi) v4hi __builtin_ia32_pavgw (v4hi, v4hi) v4hi __builtin_ia32_psadbw (v8qi, v8qi) v8qi __builtin_ia32_pmaxub (v8qi, v8qi) v4hi __builtin_ia32_pmaxsw (v4hi, v4hi) v8qi __builtin_ia32_pminub (v8qi, v8qi) v4hi __builtin_ia32_pminsw (v4hi, v4hi) int __builtin_ia32_pextrw (v4hi, int) v4hi __builtin_ia32_pinsrw (v4hi, int, int) int __builtin_ia32_pmovmskb (v8qi) void __builtin_ia32_maskmovq (v8qi, v8qi, char *) void __builtin_ia32_movntq (di *, di) void __builtin_ia32_sfence (void) The following built-in functions are available when `-msse' is used. All of them generate the machine instruction that is part of the name. int __builtin_ia32_comieq (v4sf, v4sf) int __builtin_ia32_comineq (v4sf, v4sf) int __builtin_ia32_comilt (v4sf, v4sf) int __builtin_ia32_comile (v4sf, v4sf) int __builtin_ia32_comigt (v4sf, v4sf) int __builtin_ia32_comige (v4sf, v4sf) int __builtin_ia32_ucomieq (v4sf, v4sf) int __builtin_ia32_ucomineq (v4sf, v4sf) int __builtin_ia32_ucomilt (v4sf, v4sf) int __builtin_ia32_ucomile (v4sf, v4sf) int __builtin_ia32_ucomigt (v4sf, v4sf) int __builtin_ia32_ucomige (v4sf, v4sf) v4sf __builtin_ia32_addps (v4sf, v4sf) v4sf __builtin_ia32_subps (v4sf, v4sf) v4sf __builtin_ia32_mulps (v4sf, v4sf) v4sf __builtin_ia32_divps (v4sf, v4sf) v4sf __builtin_ia32_addss (v4sf, v4sf) v4sf __builtin_ia32_subss (v4sf, v4sf) v4sf __builtin_ia32_mulss (v4sf, v4sf) v4sf __builtin_ia32_divss (v4sf, v4sf) v4si __builtin_ia32_cmpeqps (v4sf, v4sf) v4si __builtin_ia32_cmpltps (v4sf, v4sf) v4si __builtin_ia32_cmpleps (v4sf, v4sf) v4si __builtin_ia32_cmpgtps (v4sf, v4sf) v4si __builtin_ia32_cmpgeps (v4sf, v4sf) v4si __builtin_ia32_cmpunordps (v4sf, v4sf) v4si __builtin_ia32_cmpneqps (v4sf, v4sf) v4si __builtin_ia32_cmpnltps (v4sf, v4sf) v4si __builtin_ia32_cmpnleps (v4sf, v4sf) v4si __builtin_ia32_cmpngtps (v4sf, v4sf) v4si __builtin_ia32_cmpngeps (v4sf, v4sf) v4si __builtin_ia32_cmpordps (v4sf, v4sf) v4si __builtin_ia32_cmpeqss (v4sf, v4sf) v4si __builtin_ia32_cmpltss (v4sf, v4sf) v4si __builtin_ia32_cmpless (v4sf, v4sf) v4si __builtin_ia32_cmpgtss (v4sf, v4sf) v4si __builtin_ia32_cmpgess (v4sf, v4sf) v4si __builtin_ia32_cmpunordss (v4sf, v4sf) v4si __builtin_ia32_cmpneqss (v4sf, v4sf) v4si __builtin_ia32_cmpnlts (v4sf, v4sf) v4si __builtin_ia32_cmpnless (v4sf, v4sf) v4si __builtin_ia32_cmpngtss (v4sf, v4sf) v4si __builtin_ia32_cmpngess (v4sf, v4sf) v4si __builtin_ia32_cmpordss (v4sf, v4sf) v4sf __builtin_ia32_maxps (v4sf, v4sf) v4sf __builtin_ia32_maxss (v4sf, v4sf) v4sf __builtin_ia32_minps (v4sf, v4sf) v4sf __builtin_ia32_minss (v4sf, v4sf) v4sf __builtin_ia32_andps (v4sf, v4sf) v4sf __builtin_ia32_andnps (v4sf, v4sf) v4sf __builtin_ia32_orps (v4sf, v4sf) v4sf __builtin_ia32_xorps (v4sf, v4sf) v4sf __builtin_ia32_movss (v4sf, v4sf) v4sf __builtin_ia32_movhlps (v4sf, v4sf) v4sf __builtin_ia32_movlhps (v4sf, v4sf) v4sf __builtin_ia32_unpckhps (v4sf, v4sf) v4sf __builtin_ia32_unpcklps (v4sf, v4sf) v4sf __builtin_ia32_cvtpi2ps (v4sf, v2si) v4sf __builtin_ia32_cvtsi2ss (v4sf, int) v2si __builtin_ia32_cvtps2pi (v4sf) int __builtin_ia32_cvtss2si (v4sf) v2si __builtin_ia32_cvttps2pi (v4sf) int __builtin_ia32_cvttss2si (v4sf) v4sf __builtin_ia32_rcpps (v4sf) v4sf __builtin_ia32_rsqrtps (v4sf) v4sf __builtin_ia32_sqrtps (v4sf) v4sf __builtin_ia32_rcpss (v4sf) v4sf __builtin_ia32_rsqrtss (v4sf) v4sf __builtin_ia32_sqrtss (v4sf) v4sf __builtin_ia32_shufps (v4sf, v4sf, int) void __builtin_ia32_movntps (float *, v4sf) int __builtin_ia32_movmskps (v4sf) The following built-in functions are available when `-msse' is used. `v4sf __builtin_ia32_loadaps (float *)' Generates the `movaps' machine instruction as a load from memory. `void __builtin_ia32_storeaps (float *, v4sf)' Generates the `movaps' machine instruction as a store to memory. `v4sf __builtin_ia32_loadups (float *)' Generates the `movups' machine instruction as a load from memory. `void __builtin_ia32_storeups (float *, v4sf)' Generates the `movups' machine instruction as a store to memory. `v4sf __builtin_ia32_loadsss (float *)' Generates the `movss' machine instruction as a load from memory. `void __builtin_ia32_storess (float *, v4sf)' Generates the `movss' machine instruction as a store to memory. `v4sf __builtin_ia32_loadhps (v4sf, v2si *)' Generates the `movhps' machine instruction as a load from memory. `v4sf __builtin_ia32_loadlps (v4sf, v2si *)' Generates the `movlps' machine instruction as a load from memory `void __builtin_ia32_storehps (v4sf, v2si *)' Generates the `movhps' machine instruction as a store to memory. `void __builtin_ia32_storelps (v4sf, v2si *)' Generates the `movlps' machine instruction as a store to memory. The following built-in functions are available when `-m3dnow' is used. All of them generate the machine instruction that is part of the name. void __builtin_ia32_femms (void) v8qi __builtin_ia32_pavgusb (v8qi, v8qi) v2si __builtin_ia32_pf2id (v2sf) v2sf __builtin_ia32_pfacc (v2sf, v2sf) v2sf __builtin_ia32_pfadd (v2sf, v2sf) v2si __builtin_ia32_pfcmpeq (v2sf, v2sf) v2si __builtin_ia32_pfcmpge (v2sf, v2sf) v2si __builtin_ia32_pfcmpgt (v2sf, v2sf) v2sf __builtin_ia32_pfmax (v2sf, v2sf) v2sf __builtin_ia32_pfmin (v2sf, v2sf) v2sf __builtin_ia32_pfmul (v2sf, v2sf) v2sf __builtin_ia32_pfrcp (v2sf) v2sf __builtin_ia32_pfrcpit1 (v2sf, v2sf) v2sf __builtin_ia32_pfrcpit2 (v2sf, v2sf) v2sf __builtin_ia32_pfrsqrt (v2sf) v2sf __builtin_ia32_pfrsqrtit1 (v2sf, v2sf) v2sf __builtin_ia32_pfsub (v2sf, v2sf) v2sf __builtin_ia32_pfsubr (v2sf, v2sf) v2sf __builtin_ia32_pi2fd (v2si) v4hi __builtin_ia32_pmulhrw (v4hi, v4hi) The following built-in functions are available when both `-m3dnow' and `-march=athlon' are used. All of them generate the machine instruction that is part of the name. v2si __builtin_ia32_pf2iw (v2sf) v2sf __builtin_ia32_pfnacc (v2sf, v2sf) v2sf __builtin_ia32_pfpnacc (v2sf, v2sf) v2sf __builtin_ia32_pi2fw (v2si) v2sf __builtin_ia32_pswapdsf (v2sf) v2si __builtin_ia32_pswapdsi (v2si)