Next: MIPS DSP Built-in Functions, Previous: FR-V Built-in Functions, Up: Target Builtins

#### 5.50.6 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.

Note that, if you specify command-line switches such as -msse, the compiler could use the extended instruction sets even if the built-ins are not used explicitly in the program. For this reason, applications which perform runtime CPU detection must compile separate files for each supported architecture, using the appropriate flags. In particular, the file containing the CPU detection code should be compiled without these options.

The following machine modes are available for use with MMX built-in functions (see 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`.

In 64-bit mode, the x86-64 family of processors uses additional built-in functions for efficient use of `TF` (`__float128`) 128-bit floating point and `TC` 128-bit complex floating point values.

The following floating point built-in functions are available in 64-bit mode. All of them implement the function that is part of the name.

         __float128 __builtin_fabsq (__float128)
         __float128 __builtin_copysignq (__float128, __float128)

The following floating point built-in functions are made available in the 64-bit mode.

`__float128 __builtin_infq (void)`
  Similar to `__builtin_inf`, except the return type is `__float128`.

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_cmpunordss (v4sf, v4sf)
         v4si __builtin_ia32_cmpneqss (v4sf, v4sf)
         v4si __builtin_ia32_cmpnlts (v4sf, v4sf)
         v4si __builtin_ia32_cmpnless (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 -msse2 is used. All of them generate the machine instruction that is part of the name.

         int __builtin_ia32_comisdeq (v2df, v2df)
         int __builtin_ia32_comisdlt (v2df, v2df)
         int __builtin_ia32_comisdle (v2df, v2df)
         int __builtin_ia32_comisdgt (v2df, v2df)
         int __builtin_ia32_comisdge (v2df, v2df)
         int __builtin_ia32_comisdneq (v2df, v2df)
         int __builtin_ia32_ucomisdeq (v2df, v2df)
         int __builtin_ia32_ucomisdlt (v2df, v2df)
         int __builtin_ia32_ucomisdle (v2df, v2df)
         int __builtin_ia32_ucomisdgt (v2df, v2df)
         int __builtin_ia32_ucomisdge (v2df, v2df)
         int __builtin_ia32_ucomisdneq (v2df, v2df)
         v2df __builtin_ia32_cmpeqpd (v2df, v2df)
         v2df __builtin_ia32_cmpltpd (v2df, v2df)
         v2df __builtin_ia32_cmplepd (v2df, v2df)
         v2df __builtin_ia32_cmpgtpd (v2df, v2df)
         v2df __builtin_ia32_cmpgepd (v2df, v2df)
         v2df __builtin_ia32_cmpunordpd (v2df, v2df)
         v2df __builtin_ia32_cmpneqpd (v2df, v2df)
         v2df __builtin_ia32_cmpnltpd (v2df, v2df)
         v2df __builtin_ia32_cmpnlepd (v2df, v2df)
         v2df __builtin_ia32_cmpngtpd (v2df, v2df)
         v2df __builtin_ia32_cmpngepd (v2df, v2df)
         v2df __builtin_ia32_cmpordpd (v2df, v2df)
         v2df __builtin_ia32_cmpeqsd (v2df, v2df)
         v2df __builtin_ia32_cmpltsd (v2df, v2df)
         v2df __builtin_ia32_cmplesd (v2df, v2df)
         v2df __builtin_ia32_cmpunordsd (v2df, v2df)
         v2df __builtin_ia32_cmpneqsd (v2df, v2df)
         v2df __builtin_ia32_cmpnltsd (v2df, v2df)
         v2df __builtin_ia32_cmpnlesd (v2df, v2df)
         v2df __builtin_ia32_cmpordsd (v2df, v2df)
         v2di __builtin_ia32_paddq (v2di, v2di)
         v2di __builtin_ia32_psubq (v2di, v2di)
         v2df __builtin_ia32_addpd (v2df, v2df)
         v2df __builtin_ia32_subpd (v2df, v2df)
         v2df __builtin_ia32_mulpd (v2df, v2df)
         v2df __builtin_ia32_divpd (v2df, v2df)
         v2df __builtin_ia32_addsd (v2df, v2df)
         v2df __builtin_ia32_subsd (v2df, v2df)
         v2df __builtin_ia32_mulsd (v2df, v2df)
         v2df __builtin_ia32_divsd (v2df, v2df)
         v2df __builtin_ia32_minpd (v2df, v2df)
         v2df __builtin_ia32_maxpd (v2df, v2df)
         v2df __builtin_ia32_minsd (v2df, v2df)
         v2df __builtin_ia32_maxsd (v2df, v2df)
         v2df __builtin_ia32_andpd (v2df, v2df)
         v2df __builtin_ia32_andnpd (v2df, v2df)
         v2df __builtin_ia32_orpd (v2df, v2df)
         v2df __builtin_ia32_xorpd (v2df, v2df)
         v2df __builtin_ia32_movsd (v2df, v2df)
         v2df __builtin_ia32_unpckhpd (v2df, v2df)
         v2df __builtin_ia32_unpcklpd (v2df, v2df)
         v16qi __builtin_ia32_paddb128 (v16qi, v16qi)
         v8hi __builtin_ia32_paddw128 (v8hi, v8hi)
         v4si __builtin_ia32_paddd128 (v4si, v4si)
         v2di __builtin_ia32_paddq128 (v2di, v2di)
         v16qi __builtin_ia32_psubb128 (v16qi, v16qi)
         v8hi __builtin_ia32_psubw128 (v8hi, v8hi)
         v4si __builtin_ia32_psubd128 (v4si, v4si)
         v2di __builtin_ia32_psubq128 (v2di, v2di)
         v8hi __builtin_ia32_pmullw128 (v8hi, v8hi)
         v8hi __builtin_ia32_pmulhw128 (v8hi, v8hi)
         v2di __builtin_ia32_pand128 (v2di, v2di)
         v2di __builtin_ia32_pandn128 (v2di, v2di)
         v2di __builtin_ia32_por128 (v2di, v2di)
         v2di __builtin_ia32_pxor128 (v2di, v2di)
         v16qi __builtin_ia32_pavgb128 (v16qi, v16qi)
         v8hi __builtin_ia32_pavgw128 (v8hi, v8hi)
         v16qi __builtin_ia32_pcmpeqb128 (v16qi, v16qi)
         v8hi __builtin_ia32_pcmpeqw128 (v8hi, v8hi)
         v4si __builtin_ia32_pcmpeqd128 (v4si, v4si)
         v16qi __builtin_ia32_pcmpgtb128 (v16qi, v16qi)
         v8hi __builtin_ia32_pcmpgtw128 (v8hi, v8hi)
         v4si __builtin_ia32_pcmpgtd128 (v4si, v4si)
         v16qi __builtin_ia32_pmaxub128 (v16qi, v16qi)
         v8hi __builtin_ia32_pmaxsw128 (v8hi, v8hi)
         v16qi __builtin_ia32_pminub128 (v16qi, v16qi)
         v8hi __builtin_ia32_pminsw128 (v8hi, v8hi)
         v16qi __builtin_ia32_punpckhbw128 (v16qi, v16qi)
         v8hi __builtin_ia32_punpckhwd128 (v8hi, v8hi)
         v4si __builtin_ia32_punpckhdq128 (v4si, v4si)
         v2di __builtin_ia32_punpckhqdq128 (v2di, v2di)
         v16qi __builtin_ia32_punpcklbw128 (v16qi, v16qi)
         v8hi __builtin_ia32_punpcklwd128 (v8hi, v8hi)
         v4si __builtin_ia32_punpckldq128 (v4si, v4si)
         v2di __builtin_ia32_punpcklqdq128 (v2di, v2di)
         v16qi __builtin_ia32_packsswb128 (v16qi, v16qi)
         v8hi __builtin_ia32_packssdw128 (v8hi, v8hi)
         v16qi __builtin_ia32_packuswb128 (v16qi, v16qi)
         v8hi __builtin_ia32_pmulhuw128 (v8hi, v8hi)
         void __builtin_ia32_maskmovdqu (v16qi, v16qi)
         v2df __builtin_ia32_loadupd (double *)
         void __builtin_ia32_storeupd (double *, v2df)
         v2df __builtin_ia32_loadhpd (v2df, double *)
         v2df __builtin_ia32_loadlpd (v2df, double *)
         int __builtin_ia32_movmskpd (v2df)
         int __builtin_ia32_pmovmskb128 (v16qi)
         void __builtin_ia32_movnti (int *, int)
         void __builtin_ia32_movntpd (double *, v2df)
         void __builtin_ia32_movntdq (v2df *, v2df)
         v4si __builtin_ia32_pshufd (v4si, int)
         v8hi __builtin_ia32_pshuflw (v8hi, int)
         v8hi __builtin_ia32_pshufhw (v8hi, int)
         v2di __builtin_ia32_psadbw128 (v16qi, v16qi)
         v2df __builtin_ia32_sqrtpd (v2df)
         v2df __builtin_ia32_sqrtsd (v2df)
         v2df __builtin_ia32_shufpd (v2df, v2df, int)
         v2df __builtin_ia32_cvtdq2pd (v4si)
         v4sf __builtin_ia32_cvtdq2ps (v4si)
         v4si __builtin_ia32_cvtpd2dq (v2df)
         v2si __builtin_ia32_cvtpd2pi (v2df)
         v4sf __builtin_ia32_cvtpd2ps (v2df)
         v4si __builtin_ia32_cvttpd2dq (v2df)
         v2si __builtin_ia32_cvttpd2pi (v2df)
         v2df __builtin_ia32_cvtpi2pd (v2si)
         int __builtin_ia32_cvtsd2si (v2df)
         int __builtin_ia32_cvttsd2si (v2df)
         long long __builtin_ia32_cvtsd2si64 (v2df)
         long long __builtin_ia32_cvttsd2si64 (v2df)
         v4si __builtin_ia32_cvtps2dq (v4sf)
         v2df __builtin_ia32_cvtps2pd (v4sf)
         v4si __builtin_ia32_cvttps2dq (v4sf)
         v2df __builtin_ia32_cvtsi2sd (v2df, int)
         v2df __builtin_ia32_cvtsi642sd (v2df, long long)
         v4sf __builtin_ia32_cvtsd2ss (v4sf, v2df)
         v2df __builtin_ia32_cvtss2sd (v2df, v4sf)
         void __builtin_ia32_clflush (const void *)
         void __builtin_ia32_lfence (void)
         void __builtin_ia32_mfence (void)
         v16qi __builtin_ia32_loaddqu (const char *)
         void __builtin_ia32_storedqu (char *, v16qi)
         unsigned long long __builtin_ia32_pmuludq (v2si, v2si)
         v2di __builtin_ia32_pmuludq128 (v4si, v4si)
         v8hi __builtin_ia32_psllw128 (v8hi, v2di)
         v4si __builtin_ia32_pslld128 (v4si, v2di)
         v2di __builtin_ia32_psllq128 (v4si, v2di)
         v8hi __builtin_ia32_psrlw128 (v8hi, v2di)
         v4si __builtin_ia32_psrld128 (v4si, v2di)
         v2di __builtin_ia32_psrlq128 (v2di, v2di)
         v8hi __builtin_ia32_psraw128 (v8hi, v2di)
         v4si __builtin_ia32_psrad128 (v4si, v2di)
         v2di __builtin_ia32_pslldqi128 (v2di, int)
         v8hi __builtin_ia32_psllwi128 (v8hi, int)
         v4si __builtin_ia32_pslldi128 (v4si, int)
         v2di __builtin_ia32_psllqi128 (v2di, int)
         v2di __builtin_ia32_psrldqi128 (v2di, int)
         v8hi __builtin_ia32_psrlwi128 (v8hi, int)
         v4si __builtin_ia32_psrldi128 (v4si, int)
         v2di __builtin_ia32_psrlqi128 (v2di, int)
         v8hi __builtin_ia32_psrawi128 (v8hi, int)
         v4si __builtin_ia32_psradi128 (v4si, int)
         v4si __builtin_ia32_pmaddwd128 (v8hi, v8hi)

The following built-in functions are available when -msse3 is used. All of them generate the machine instruction that is part of the name.

         v2df __builtin_ia32_addsubpd (v2df, v2df)
         v4sf __builtin_ia32_addsubps (v4sf, v4sf)
         v2df __builtin_ia32_haddpd (v2df, v2df)
         v4sf __builtin_ia32_haddps (v4sf, v4sf)
         v2df __builtin_ia32_hsubpd (v2df, v2df)
         v4sf __builtin_ia32_hsubps (v4sf, v4sf)
         v16qi __builtin_ia32_lddqu (char const *)
         void __builtin_ia32_monitor (void *, unsigned int, unsigned int)
         v2df __builtin_ia32_movddup (v2df)
         v4sf __builtin_ia32_movshdup (v4sf)
         v4sf __builtin_ia32_movsldup (v4sf)
         void __builtin_ia32_mwait (unsigned int, unsigned int)

The following built-in functions are available when -msse3 is used.

`v2df __builtin_ia32_loadddup (double const *)`
  Generates the `movddup` machine instruction as a load from memory.

The following built-in functions are available when -mssse3 is used. All of them generate the machine instruction that is part of the name with MMX registers.

         v2si __builtin_ia32_phaddd (v2si, v2si)
         v4hi __builtin_ia32_phaddw (v4hi, v4hi)
         v4hi __builtin_ia32_phaddsw (v4hi, v4hi)
         v2si __builtin_ia32_phsubd (v2si, v2si)
         v4hi __builtin_ia32_phsubw (v4hi, v4hi)
         v4hi __builtin_ia32_phsubsw (v4hi, v4hi)
         v8qi __builtin_ia32_pmaddubsw (v8qi, v8qi)
         v4hi __builtin_ia32_pmulhrsw (v4hi, v4hi)
         v8qi __builtin_ia32_pshufb (v8qi, v8qi)
         v8qi __builtin_ia32_psignb (v8qi, v8qi)
         v2si __builtin_ia32_psignd (v2si, v2si)
         v4hi __builtin_ia32_psignw (v4hi, v4hi)
         long long __builtin_ia32_palignr (long long, long long, int)
         v8qi __builtin_ia32_pabsb (v8qi)
         v2si __builtin_ia32_pabsd (v2si)
         v4hi __builtin_ia32_pabsw (v4hi)

The following built-in functions are available when -mssse3 is used. All of them generate the machine instruction that is part of the name with SSE registers.

         v4si __builtin_ia32_phaddd128 (v4si, v4si)
         v8hi __builtin_ia32_phaddw128 (v8hi, v8hi)
         v8hi __builtin_ia32_phaddsw128 (v8hi, v8hi)
         v4si __builtin_ia32_phsubd128 (v4si, v4si)
         v8hi __builtin_ia32_phsubw128 (v8hi, v8hi)
         v8hi __builtin_ia32_phsubsw128 (v8hi, v8hi)
         v16qi __builtin_ia32_pmaddubsw128 (v16qi, v16qi)
         v8hi __builtin_ia32_pmulhrsw128 (v8hi, v8hi)
         v16qi __builtin_ia32_pshufb128 (v16qi, v16qi)
         v16qi __builtin_ia32_psignb128 (v16qi, v16qi)
         v4si __builtin_ia32_psignd128 (v4si, v4si)
         v8hi __builtin_ia32_psignw128 (v8hi, v8hi)
         v2di __builtin_ia32_palignr (v2di, v2di, int)
         v16qi __builtin_ia32_pabsb128 (v16qi)
         v4si __builtin_ia32_pabsd128 (v4si)
         v8hi __builtin_ia32_pabsw128 (v8hi)

The following built-in functions are available when -msse4.1 is used. All of them generate the machine instruction that is part of the name.

         v2df __builtin_ia32_blendpd (v2df, v2df, const int)
         v4sf __builtin_ia32_blendps (v4sf, v4sf, const int)
         v2df __builtin_ia32_blendvpd (v2df, v2df, v2df)
         v4sf __builtin_ia32_blendvps (v4sf, v4sf, v4sf)
         v2df __builtin_ia32_dppd (v2df, v2df, const int)
         v4sf __builtin_ia32_dpps (v4sf, v4sf, const int)
         v4sf __builtin_ia32_insertps128 (v4sf, v4sf, const int)
         v2di __builtin_ia32_movntdqa (v2di *);
         v16qi __builtin_ia32_mpsadbw128 (v16qi, v16qi, const int)
         v8hi __builtin_ia32_packusdw128 (v4si, v4si)
         v16qi __builtin_ia32_pblendvb128 (v16qi, v16qi, v16qi)
         v8hi __builtin_ia32_pblendw128 (v8hi, v8hi, const int)
         v2di __builtin_ia32_pcmpeqq (v2di, v2di)
         v8hi __builtin_ia32_phminposuw128 (v8hi)
         v16qi __builtin_ia32_pmaxsb128 (v16qi, v16qi)
         v4si __builtin_ia32_pmaxsd128 (v4si, v4si)
         v4si __builtin_ia32_pmaxud128 (v4si, v4si)
         v8hi __builtin_ia32_pmaxuw128 (v8hi, v8hi)
         v16qi __builtin_ia32_pminsb128 (v16qi, v16qi)
         v4si __builtin_ia32_pminsd128 (v4si, v4si)
         v4si __builtin_ia32_pminud128 (v4si, v4si)
         v8hi __builtin_ia32_pminuw128 (v8hi, v8hi)
         v4si __builtin_ia32_pmovsxbd128 (v16qi)
         v2di __builtin_ia32_pmovsxbq128 (v16qi)
         v8hi __builtin_ia32_pmovsxbw128 (v16qi)
         v2di __builtin_ia32_pmovsxdq128 (v4si)
         v4si __builtin_ia32_pmovsxwd128 (v8hi)
         v2di __builtin_ia32_pmovsxwq128 (v8hi)
         v4si __builtin_ia32_pmovzxbd128 (v16qi)
         v2di __builtin_ia32_pmovzxbq128 (v16qi)
         v8hi __builtin_ia32_pmovzxbw128 (v16qi)
         v2di __builtin_ia32_pmovzxdq128 (v4si)
         v4si __builtin_ia32_pmovzxwd128 (v8hi)
         v2di __builtin_ia32_pmovzxwq128 (v8hi)
         v2di __builtin_ia32_pmuldq128 (v4si, v4si)
         v4si __builtin_ia32_pmulld128 (v4si, v4si)
         int __builtin_ia32_ptestc128 (v2di, v2di)
         int __builtin_ia32_ptestnzc128 (v2di, v2di)
         int __builtin_ia32_ptestz128 (v2di, v2di)
         v2df __builtin_ia32_roundpd (v2df, const int)
         v4sf __builtin_ia32_roundps (v4sf, const int)
         v2df __builtin_ia32_roundsd (v2df, v2df, const int)
         v4sf __builtin_ia32_roundss (v4sf, v4sf, const int)

The following built-in functions are available when -msse4.1 is used.

`v4sf __builtin_ia32_vec_set_v4sf (v4sf, float, const int)`
  Generates the `insertps` machine instruction.
`int __builtin_ia32_vec_ext_v16qi (v16qi, const int)`
  Generates the `pextrb` machine instruction.
`v16qi __builtin_ia32_vec_set_v16qi (v16qi, int, const int)`
  Generates the `pinsrb` machine instruction.
`v4si __builtin_ia32_vec_set_v4si (v4si, int, const int)`
  Generates the `pinsrd` machine instruction.
`v2di __builtin_ia32_vec_set_v2di (v2di, long long, const int)`
  Generates the `pinsrq` machine instruction in 64bit mode.

The following built-in functions are changed to generate new SSE4.1 instructions when -msse4.1 is used.

`float __builtin_ia32_vec_ext_v4sf (v4sf, const int)`
  Generates the `extractps` machine instruction.
`int __builtin_ia32_vec_ext_v4si (v4si, const int)`
  Generates the `pextrd` machine instruction.
`long long __builtin_ia32_vec_ext_v2di (v2di, const int)`
  Generates the `pextrq` machine instruction in 64bit mode.

The following built-in functions are available when -msse4.2 is used. All of them generate the machine instruction that is part of the name.

         v16qi __builtin_ia32_pcmpestrm128 (v16qi, int, v16qi, int, const int)
         int __builtin_ia32_pcmpestri128 (v16qi, int, v16qi, int, const int)
         int __builtin_ia32_pcmpestria128 (v16qi, int, v16qi, int, const int)
         int __builtin_ia32_pcmpestric128 (v16qi, int, v16qi, int, const int)
         int __builtin_ia32_pcmpestrio128 (v16qi, int, v16qi, int, const int)
         int __builtin_ia32_pcmpestris128 (v16qi, int, v16qi, int, const int)
         int __builtin_ia32_pcmpestriz128 (v16qi, int, v16qi, int, const int)
         v16qi __builtin_ia32_pcmpistrm128 (v16qi, v16qi, const int)
         int __builtin_ia32_pcmpistri128 (v16qi, v16qi, const int)
         int __builtin_ia32_pcmpistria128 (v16qi, v16qi, const int)
         int __builtin_ia32_pcmpistric128 (v16qi, v16qi, const int)
         int __builtin_ia32_pcmpistrio128 (v16qi, v16qi, const int)
         int __builtin_ia32_pcmpistris128 (v16qi, v16qi, const int)
         int __builtin_ia32_pcmpistriz128 (v16qi, v16qi, const int)
         v2di __builtin_ia32_pcmpgtq (v2di, v2di)

The following built-in functions are available when -msse4.2 is used.

`unsigned int __builtin_ia32_crc32qi (unsigned int, unsigned char)`
  Generates the `crc32b` machine instruction.
`unsigned int __builtin_ia32_crc32hi (unsigned int, unsigned short)`
  Generates the `crc32w` machine instruction.
`unsigned int __builtin_ia32_crc32si (unsigned int, unsigned int)`
  Generates the `crc32l` machine instruction.
`unsigned long long __builtin_ia32_crc32di (unsigned long long, unsigned long long)`

The following built-in functions are changed to generate new SSE4.2 instructions when -msse4.2 is used.

`int __builtin_popcount (unsigned int)`
  Generates the `popcntl` machine instruction.
`int __builtin_popcountl (unsigned long)`
  Generates the `popcntl` or `popcntq` machine instruction, depending on the size of `unsigned long`.
`int __builtin_popcountll (unsigned long long)`
  Generates the `popcntq` machine instruction.

The following built-in functions are available when -msse4a is used. All of them generate the machine instruction that is part of the name.

         void __builtin_ia32_movntsd (double *, v2df)
         void __builtin_ia32_movntss (float *, v4sf)
         v2di __builtin_ia32_extrq  (v2di, v16qi)
         v2di __builtin_ia32_extrqi (v2di, const unsigned int, const unsigned int)
         v2di __builtin_ia32_insertq (v2di, v2di)
         v2di __builtin_ia32_insertqi (v2di, v2di, const unsigned int, const unsigned int)

The following built-in functions are available when -msse5 is used. All of them generate the machine instruction that is part of the name with MMX registers.

         v2df __builtin_ia32_comeqpd (v2df, v2df)
         v2df __builtin_ia32_comeqps (v2df, v2df)
         v4sf __builtin_ia32_comeqsd (v4sf, v4sf)
         v4sf __builtin_ia32_comeqss (v4sf, v4sf)
         v2df __builtin_ia32_comfalsepd (v2df, v2df)
         v2df __builtin_ia32_comfalseps (v2df, v2df)
         v4sf __builtin_ia32_comfalsesd (v4sf, v4sf)
         v4sf __builtin_ia32_comfalsess (v4sf, v4sf)
         v2df __builtin_ia32_comgepd (v2df, v2df)
         v2df __builtin_ia32_comgeps (v2df, v2df)
         v4sf __builtin_ia32_comgesd (v4sf, v4sf)
         v4sf __builtin_ia32_comgess (v4sf, v4sf)
         v2df __builtin_ia32_comgtpd (v2df, v2df)
         v2df __builtin_ia32_comgtps (v2df, v2df)
         v4sf __builtin_ia32_comgtsd (v4sf, v4sf)
         v4sf __builtin_ia32_comgtss (v4sf, v4sf)
         v2df __builtin_ia32_comlepd (v2df, v2df)
         v2df __builtin_ia32_comleps (v2df, v2df)
         v4sf __builtin_ia32_comlesd (v4sf, v4sf)
         v4sf __builtin_ia32_comless (v4sf, v4sf)
         v2df __builtin_ia32_comltpd (v2df, v2df)
         v2df __builtin_ia32_comltps (v2df, v2df)
         v4sf __builtin_ia32_comltsd (v4sf, v4sf)
         v4sf __builtin_ia32_comltss (v4sf, v4sf)
         v2df __builtin_ia32_comnepd (v2df, v2df)
         v2df __builtin_ia32_comneps (v2df, v2df)
         v4sf __builtin_ia32_comnesd (v4sf, v4sf)
         v4sf __builtin_ia32_comness (v4sf, v4sf)
         v2df __builtin_ia32_comordpd (v2df, v2df)
         v2df __builtin_ia32_comordps (v2df, v2df)
         v4sf __builtin_ia32_comordsd (v4sf, v4sf)
         v4sf __builtin_ia32_comordss (v4sf, v4sf)
         v2df __builtin_ia32_comtruepd (v2df, v2df)
         v2df __builtin_ia32_comtrueps (v2df, v2df)
         v4sf __builtin_ia32_comtruesd (v4sf, v4sf)
         v4sf __builtin_ia32_comtruess (v4sf, v4sf)
         v2df __builtin_ia32_comueqpd (v2df, v2df)
         v2df __builtin_ia32_comueqps (v2df, v2df)
         v4sf __builtin_ia32_comueqsd (v4sf, v4sf)
         v4sf __builtin_ia32_comueqss (v4sf, v4sf)
         v2df __builtin_ia32_comugepd (v2df, v2df)
         v2df __builtin_ia32_comugeps (v2df, v2df)
         v4sf __builtin_ia32_comugesd (v4sf, v4sf)
         v4sf __builtin_ia32_comugess (v4sf, v4sf)
         v2df __builtin_ia32_comugtpd (v2df, v2df)
         v2df __builtin_ia32_comugtps (v2df, v2df)
         v4sf __builtin_ia32_comugtsd (v4sf, v4sf)
         v4sf __builtin_ia32_comugtss (v4sf, v4sf)
         v2df __builtin_ia32_comulepd (v2df, v2df)
         v2df __builtin_ia32_comuleps (v2df, v2df)
         v4sf __builtin_ia32_comulesd (v4sf, v4sf)
         v4sf __builtin_ia32_comuless (v4sf, v4sf)
         v2df __builtin_ia32_comultpd (v2df, v2df)
         v2df __builtin_ia32_comultps (v2df, v2df)
         v4sf __builtin_ia32_comultsd (v4sf, v4sf)
         v4sf __builtin_ia32_comultss (v4sf, v4sf)
         v2df __builtin_ia32_comunepd (v2df, v2df)
         v2df __builtin_ia32_comuneps (v2df, v2df)
         v4sf __builtin_ia32_comunesd (v4sf, v4sf)
         v4sf __builtin_ia32_comuness (v4sf, v4sf)
         v2df __builtin_ia32_comunordpd (v2df, v2df)
         v2df __builtin_ia32_comunordps (v2df, v2df)
         v4sf __builtin_ia32_comunordsd (v4sf, v4sf)
         v4sf __builtin_ia32_comunordss (v4sf, v4sf)
         v2df __builtin_ia32_fmaddpd (v2df, v2df, v2df)
         v4sf __builtin_ia32_fmaddps (v4sf, v4sf, v4sf)
         v2df __builtin_ia32_fmaddsd (v2df, v2df, v2df)
         v4sf __builtin_ia32_fmaddss (v4sf, v4sf, v4sf)
         v2df __builtin_ia32_fmsubpd (v2df, v2df, v2df)
         v4sf __builtin_ia32_fmsubps (v4sf, v4sf, v4sf)
         v2df __builtin_ia32_fmsubsd (v2df, v2df, v2df)
         v4sf __builtin_ia32_fmsubss (v4sf, v4sf, v4sf)
         v2df __builtin_ia32_fnmaddpd (v2df, v2df, v2df)
         v4sf __builtin_ia32_fnmaddps (v4sf, v4sf, v4sf)
         v2df __builtin_ia32_fnmaddsd (v2df, v2df, v2df)
         v4sf __builtin_ia32_fnmaddss (v4sf, v4sf, v4sf)
         v2df __builtin_ia32_fnmsubpd (v2df, v2df, v2df)
         v4sf __builtin_ia32_fnmsubps (v4sf, v4sf, v4sf)
         v2df __builtin_ia32_fnmsubsd (v2df, v2df, v2df)
         v4sf __builtin_ia32_fnmsubss (v4sf, v4sf, v4sf)
         v2df __builtin_ia32_frczpd (v2df)
         v4sf __builtin_ia32_frczps (v4sf)
         v2df __builtin_ia32_frczsd (v2df, v2df)
         v4sf __builtin_ia32_frczss (v4sf, v4sf)
         v2di __builtin_ia32_pcmov (v2di, v2di, v2di)
         v2di __builtin_ia32_pcmov_v2di (v2di, v2di, v2di)
         v4si __builtin_ia32_pcmov_v4si (v4si, v4si, v4si)
         v8hi __builtin_ia32_pcmov_v8hi (v8hi, v8hi, v8hi)
         v16qi __builtin_ia32_pcmov_v16qi (v16qi, v16qi, v16qi)
         v2df __builtin_ia32_pcmov_v2df (v2df, v2df, v2df)
         v4sf __builtin_ia32_pcmov_v4sf (v4sf, v4sf, v4sf)
         v16qi __builtin_ia32_pcomeqb (v16qi, v16qi)
         v8hi __builtin_ia32_pcomeqw (v8hi, v8hi)
         v4si __builtin_ia32_pcomeqd (v4si, v4si)
         v2di __builtin_ia32_pcomeqq (v2di, v2di)
         v16qi __builtin_ia32_pcomequb (v16qi, v16qi)
         v4si __builtin_ia32_pcomequd (v4si, v4si)
         v2di __builtin_ia32_pcomequq (v2di, v2di)
         v8hi __builtin_ia32_pcomequw (v8hi, v8hi)
         v8hi __builtin_ia32_pcomeqw (v8hi, v8hi)
         v16qi __builtin_ia32_pcomfalseb (v16qi, v16qi)
         v4si __builtin_ia32_pcomfalsed (v4si, v4si)
         v2di __builtin_ia32_pcomfalseq (v2di, v2di)
         v16qi __builtin_ia32_pcomfalseub (v16qi, v16qi)
         v4si __builtin_ia32_pcomfalseud (v4si, v4si)
         v2di __builtin_ia32_pcomfalseuq (v2di, v2di)
         v8hi __builtin_ia32_pcomfalseuw (v8hi, v8hi)
         v8hi __builtin_ia32_pcomfalsew (v8hi, v8hi)
         v16qi __builtin_ia32_pcomgeb (v16qi, v16qi)
         v4si __builtin_ia32_pcomged (v4si, v4si)
         v2di __builtin_ia32_pcomgeq (v2di, v2di)
         v16qi __builtin_ia32_pcomgeub (v16qi, v16qi)
         v4si __builtin_ia32_pcomgeud (v4si, v4si)
         v2di __builtin_ia32_pcomgeuq (v2di, v2di)
         v8hi __builtin_ia32_pcomgeuw (v8hi, v8hi)
         v8hi __builtin_ia32_pcomgew (v8hi, v8hi)
         v16qi __builtin_ia32_pcomgtb (v16qi, v16qi)
         v4si __builtin_ia32_pcomgtd (v4si, v4si)
         v2di __builtin_ia32_pcomgtq (v2di, v2di)
         v16qi __builtin_ia32_pcomgtub (v16qi, v16qi)
         v4si __builtin_ia32_pcomgtud (v4si, v4si)
         v2di __builtin_ia32_pcomgtuq (v2di, v2di)
         v8hi __builtin_ia32_pcomgtuw (v8hi, v8hi)
         v8hi __builtin_ia32_pcomgtw (v8hi, v8hi)
         v16qi __builtin_ia32_pcomleb (v16qi, v16qi)
         v4si __builtin_ia32_pcomled (v4si, v4si)
         v2di __builtin_ia32_pcomleq (v2di, v2di)
         v16qi __builtin_ia32_pcomleub (v16qi, v16qi)
         v4si __builtin_ia32_pcomleud (v4si, v4si)
         v2di __builtin_ia32_pcomleuq (v2di, v2di)
         v8hi __builtin_ia32_pcomleuw (v8hi, v8hi)
         v8hi __builtin_ia32_pcomlew (v8hi, v8hi)
         v16qi __builtin_ia32_pcomltb (v16qi, v16qi)
         v4si __builtin_ia32_pcomltd (v4si, v4si)
         v2di __builtin_ia32_pcomltq (v2di, v2di)
         v16qi __builtin_ia32_pcomltub (v16qi, v16qi)
         v4si __builtin_ia32_pcomltud (v4si, v4si)
         v2di __builtin_ia32_pcomltuq (v2di, v2di)
         v8hi __builtin_ia32_pcomltuw (v8hi, v8hi)
         v8hi __builtin_ia32_pcomltw (v8hi, v8hi)
         v16qi __builtin_ia32_pcomneb (v16qi, v16qi)
         v4si __builtin_ia32_pcomned (v4si, v4si)
         v2di __builtin_ia32_pcomneq (v2di, v2di)
         v16qi __builtin_ia32_pcomneub (v16qi, v16qi)
         v4si __builtin_ia32_pcomneud (v4si, v4si)
         v2di __builtin_ia32_pcomneuq (v2di, v2di)
         v8hi __builtin_ia32_pcomneuw (v8hi, v8hi)
         v8hi __builtin_ia32_pcomnew (v8hi, v8hi)
         v16qi __builtin_ia32_pcomtrueb (v16qi, v16qi)
         v4si __builtin_ia32_pcomtrued (v4si, v4si)
         v2di __builtin_ia32_pcomtrueq (v2di, v2di)
         v16qi __builtin_ia32_pcomtrueub (v16qi, v16qi)
         v4si __builtin_ia32_pcomtrueud (v4si, v4si)
         v2di __builtin_ia32_pcomtrueuq (v2di, v2di)
         v8hi __builtin_ia32_pcomtrueuw (v8hi, v8hi)
         v8hi __builtin_ia32_pcomtruew (v8hi, v8hi)
         v4df __builtin_ia32_permpd (v2df, v2df, v16qi)
         v4sf __builtin_ia32_permps (v4sf, v4sf, v16qi)
         v4si __builtin_ia32_phaddbd (v16qi)
         v2di __builtin_ia32_phaddbq (v16qi)
         v8hi __builtin_ia32_phaddbw (v16qi)
         v2di __builtin_ia32_phadddq (v4si)
         v4si __builtin_ia32_phaddubd (v16qi)
         v2di __builtin_ia32_phaddubq (v16qi)
         v8hi __builtin_ia32_phaddubw (v16qi)
         v2di __builtin_ia32_phaddudq (v4si)
         v4si __builtin_ia32_phadduwd (v8hi)
         v2di __builtin_ia32_phadduwq (v8hi)
         v4si __builtin_ia32_phaddwd (v8hi)
         v2di __builtin_ia32_phaddwq (v8hi)
         v8hi __builtin_ia32_phsubbw (v16qi)
         v2di __builtin_ia32_phsubdq (v4si)
         v4si __builtin_ia32_phsubwd (v8hi)
         v4si __builtin_ia32_pmacsdd (v4si, v4si, v4si)
         v2di __builtin_ia32_pmacsdqh (v4si, v4si, v2di)
         v2di __builtin_ia32_pmacsdql (v4si, v4si, v2di)
         v4si __builtin_ia32_pmacssdd (v4si, v4si, v4si)
         v2di __builtin_ia32_pmacssdqh (v4si, v4si, v2di)
         v2di __builtin_ia32_pmacssdql (v4si, v4si, v2di)
         v4si __builtin_ia32_pmacsswd (v8hi, v8hi, v4si)
         v8hi __builtin_ia32_pmacssww (v8hi, v8hi, v8hi)
         v4si __builtin_ia32_pmacswd (v8hi, v8hi, v4si)
         v8hi __builtin_ia32_pmacsww (v8hi, v8hi, v8hi)
         v4si __builtin_ia32_pmadcsswd (v8hi, v8hi, v4si)
         v4si __builtin_ia32_pmadcswd (v8hi, v8hi, v4si)
         v16qi __builtin_ia32_pperm (v16qi, v16qi, v16qi)
         v16qi __builtin_ia32_protb (v16qi, v16qi)
         v4si __builtin_ia32_protd (v4si, v4si)
         v2di __builtin_ia32_protq (v2di, v2di)
         v8hi __builtin_ia32_protw (v8hi, v8hi)
         v16qi __builtin_ia32_pshab (v16qi, v16qi)
         v4si __builtin_ia32_pshad (v4si, v4si)
         v2di __builtin_ia32_pshaq (v2di, v2di)
         v8hi __builtin_ia32_pshaw (v8hi, v8hi)
         v16qi __builtin_ia32_pshlb (v16qi, v16qi)
         v4si __builtin_ia32_pshld (v4si, v4si)
         v2di __builtin_ia32_pshlq (v2di, v2di)
         v8hi __builtin_ia32_pshlw (v8hi, v8hi)

The following builtin-in functions are available when -msse5 is used. The second argument must be an integer constant and generate the machine instruction that is part of the name with the _imm suffix removed.

         v16qi __builtin_ia32_protb_imm (v16qi, int)
         v4si __builtin_ia32_protd_imm (v4si, int)
         v2di __builtin_ia32_protq_imm (v2di, int)
         v8hi __builtin_ia32_protw_imm (v8hi, int)

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)