+++ /dev/null
-dnl AMD K6-2 mpn_and_n, mpn_andn_n, mpn_nand_n, mpn_ior_n, mpn_iorn_n,
-dnl mpn_nior_n, mpn_xor_n, mpn_xnor_n -- mpn bitwise logical operations.
-dnl
-dnl alignment dst/src1/src2, A=0mod8, N=4mod8
-dnl A/A/A A/A/N A/N/A A/N/N N/A/A N/A/N N/N/A N/N/N
-dnl
-dnl K6-2 1.2 1.5 1.5 1.2 1.2 1.5 1.5 1.2 and,andn,ior,xor
-dnl K6-2 1.5 1.75 2.0 1.75 1.75 2.0 1.75 1.5 iorn,xnor
-dnl K6-2 1.75 2.0 2.0 2.0 2.0 2.0 2.0 1.75 nand,nior
-dnl
-dnl K6 1.5 1.68 1.75 1.2 1.75 1.75 1.68 1.5 and,andn,ior,xor
-dnl K6 2.0 2.0 2.25 2.25 2.25 2.25 2.0 2.0 iorn,xnor
-dnl K6 2.0 2.25 2.25 2.25 2.25 2.25 2.25 2.0 nand,nior
-
-
-dnl Copyright (C) 1999, 2000 Free Software Foundation, Inc.
-dnl
-dnl This file is part of the GNU MP Library.
-dnl
-dnl The GNU MP Library is free software; you can redistribute it and/or
-dnl modify it under the terms of the GNU Lesser General Public License as
-dnl published by the Free Software Foundation; either version 2.1 of the
-dnl License, or (at your option) any later version.
-dnl
-dnl The GNU MP Library is distributed in the hope that it will be useful,
-dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
-dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-dnl Lesser General Public License for more details.
-dnl
-dnl You should have received a copy of the GNU Lesser General Public
-dnl License along with the GNU MP Library; see the file COPYING.LIB. If
-dnl not, write to the Free Software Foundation, Inc., 59 Temple Place -
-dnl Suite 330, Boston, MA 02111-1307, USA.
-
-
-include(`../config.m4')
-
-
-dnl M4_p and M4_i are the MMX and integer instructions
-dnl M4_*_neg_dst means whether to negate the final result before writing
-dnl M4_*_neg_src2 means whether to negate the src2 values before using them
-
-define(M4_choose_op,
-m4_assert_numargs(7)
-`ifdef(`OPERATION_$1',`
-define(`M4_function', `mpn_$1')
-define(`M4_operation', `$1')
-define(`M4_p', `$2')
-define(`M4_p_neg_dst', `$3')
-define(`M4_p_neg_src2',`$4')
-define(`M4_i', `$5')
-define(`M4_i_neg_dst', `$6')
-define(`M4_i_neg_src2',`$7')
-')')
-
-dnl xnor is done in "iorn" style because it's a touch faster than "nior"
-dnl style (the two are equivalent for xor).
-
-M4_choose_op( and_n, pand,0,0, andl,0,0)
-M4_choose_op( andn_n, pandn,0,0, andl,0,1)
-M4_choose_op( nand_n, pand,1,0, andl,1,0)
-M4_choose_op( ior_n, por,0,0, orl,0,0)
-M4_choose_op( iorn_n, por,0,1, orl,0,1)
-M4_choose_op( nior_n, por,1,0, orl,1,0)
-M4_choose_op( xor_n, pxor,0,0, xorl,0,0)
-M4_choose_op( xnor_n, pxor,0,1, xorl,0,1)
-
-ifdef(`M4_function',,
-`m4_error(`Unrecognised or undefined OPERATION symbol
-')')
-
-MULFUNC_PROLOGUE(mpn_and_n mpn_andn_n mpn_nand_n mpn_ior_n mpn_iorn_n mpn_nior_n mpn_xor_n mpn_xnor_n)
-
-
-C void M4_function (mp_ptr dst, mp_srcptr src1, mp_srcptr src2,
-C mp_size_t size);
-C
-C Do src1,size M4_operation src2,size, storing the result in dst,size.
-C
-C Unaligned movq loads and stores are a bit slower than aligned ones. The
-C test at the start of the routine checks the alignment of src1 and if
-C necessary processes one limb separately at the low end to make it aligned.
-C
-C The raw speeds without this alignment switch are as follows.
-C
-C alignment dst/src1/src2, A=0mod8, N=4mod8
-C A/A/A A/A/N A/N/A A/N/N N/A/A N/A/N N/N/A N/N/N
-C
-C K6 1.5 2.0 1.5 2.0 and,andn,ior,xor
-C K6 1.75 2.2 2.0 2.28 iorn,xnor
-C K6 2.0 2.25 2.35 2.28 nand,nior
-C
-C
-C Future:
-C
-C K6 can do one 64-bit load per cycle so each of these routines should be
-C able to approach 1.0 c/l, if aligned. The basic and/andn/ior/xor might be
-C able to get 1.0 with just a 4 limb loop, being 3 instructions per 2 limbs.
-C The others are 4 instructions per 2 limbs, and so can only approach 1.0
-C because there's nowhere to hide some loop control.
-
-defframe(PARAM_SIZE,16)
-defframe(PARAM_SRC2,12)
-defframe(PARAM_SRC1,8)
-defframe(PARAM_DST, 4)
-deflit(`FRAME',0)
-
- .text
- ALIGN(32)
-PROLOGUE(M4_function)
- movl PARAM_SIZE, %ecx
- pushl %ebx
- FRAME_pushl()
- movl PARAM_SRC1, %eax
- movl PARAM_SRC2, %ebx
- cmpl $1, %ecx
- movl PARAM_DST, %edx
- ja L(two_or_more)
-
-
- movl (%ebx), %ecx
- popl %ebx
-ifelse(M4_i_neg_src2,1,`notl %ecx')
- M4_i (%eax), %ecx
-ifelse(M4_i_neg_dst,1,` notl %ecx')
- movl %ecx, (%edx)
-
- ret
-
-
-L(two_or_more):
- C eax src1
- C ebx src2
- C ecx size
- C edx dst
- C esi
- C edi
- C ebp
- C
- C carry bit is low of size
-
- pushl %esi
- FRAME_pushl()
- testl $4, %eax
- jz L(alignment_ok)
-
- movl (%ebx), %esi
- addl $4, %ebx
-ifelse(M4_i_neg_src2,1,`notl %esi')
- M4_i (%eax), %esi
- addl $4, %eax
-ifelse(M4_i_neg_dst,1,` notl %esi')
- movl %esi, (%edx)
- addl $4, %edx
- decl %ecx
-
-L(alignment_ok):
- movl %ecx, %esi
- shrl %ecx
- jnz L(still_two_or_more)
-
- movl (%ebx), %ecx
- popl %esi
-ifelse(M4_i_neg_src2,1,`notl %ecx')
- M4_i (%eax), %ecx
-ifelse(M4_i_neg_dst,1,` notl %ecx')
- popl %ebx
- movl %ecx, (%edx)
- ret
-
-
-L(still_two_or_more):
-ifelse(eval(M4_p_neg_src2 || M4_p_neg_dst),1,`
- pcmpeqd %mm7, %mm7 C all ones
-')
-
- ALIGN(16)
-L(top):
- C eax src1
- C ebx src2
- C ecx counter
- C edx dst
- C esi
- C edi
- C ebp
- C
- C carry bit is low of size
-
- movq -8(%ebx,%ecx,8), %mm0
-ifelse(M4_p_neg_src2,1,`pxor %mm7, %mm0')
- M4_p -8(%eax,%ecx,8), %mm0
-ifelse(M4_p_neg_dst,1,` pxor %mm7, %mm0')
- movq %mm0, -8(%edx,%ecx,8)
-
- loop L(top)
-
-
- jnc L(no_extra)
-
- movl -4(%ebx,%esi,4), %ebx
-ifelse(M4_i_neg_src2,1,`notl %ebx')
- M4_i -4(%eax,%esi,4), %ebx
-ifelse(M4_i_neg_dst,1,` notl %ebx')
- movl %ebx, -4(%edx,%esi,4)
-L(no_extra):
-
- popl %esi
- popl %ebx
- emms_or_femms
- ret
-
-EPILOGUE()
projects / ghc-hetmet.git / blobdiff