OpenXM_contrib/gmp/mpn/x86/copyd.asm - diff

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version 1.1.1.1, 2000/09/09 14:12:42

version 1.1.1.2, 2003/08/25 16:06:27

Line 1

dnl x86 mpn_copyd -- copy limb vector, decrementing.

dnl

dnl Future: On P6 an MMX loop should be able to go faster than this code.

dnl

dnl This file is part of the GNU MP Library.

dnl

Line 22 dnl License along with the GNU MP Library; see the fi

Line 19 dnl License along with the GNU MP Library; see the fi

dnl not, write to the Free Software Foundation, Inc., 59 Temple Place -

dnl Suite 330, Boston, MA 02111-1307, USA.

include(`../config.m4')

C cycles/limb startup (approx)

C P5: 1.0 40

C P6 2.4 70

C K6 1.0 55

C K7: 1.3 75

C P4: 2.6 175

C (Startup time includes some function call overheads.)

C void mpn_copyd (mp_ptr dst, mp_srcptr src, mp_size_t size);

C Copy src,size to dst,size, working from high to low addresses.

C The code here is very generic and can be expected to be reasonable on all

C the x86 family.

C P5 - 1.0 cycles/limb.

C P6 - 2.4 cycles/limb, approx 40 cycles startup.

defframe(PARAM_SIZE,12)

defframe(PARAM_SRC, 8)

defframe(PARAM_DST, 4)

deflit(`FRAME',0)

.text

TEXT

ALIGN(32)

PROLOGUE(mpn_copyd)