| Index: gcc/gmp/mpn/alpha/ev67/hamdist.asm
|
| diff --git a/gcc/gmp/mpn/alpha/ev67/hamdist.asm b/gcc/gmp/mpn/alpha/ev67/hamdist.asm
|
| deleted file mode 100644
|
| index a72d95e90bef0149eede6354f99e716e5100460c..0000000000000000000000000000000000000000
|
| --- a/gcc/gmp/mpn/alpha/ev67/hamdist.asm
|
| +++ /dev/null
|
| @@ -1,100 +0,0 @@
|
| -dnl Alpha ev67 mpn_hamdist -- mpn hamming distance.
|
| -
|
| -dnl Copyright 2003, 2005 Free Software Foundation, Inc.
|
| -
|
| -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 3 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 License
|
| -dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
|
| -
|
| -include(`../config.m4')
|
| -
|
| -
|
| -C ev67: 2.5 cycles/limb
|
| -
|
| -
|
| -C unsigned long mpn_hamdist (mp_srcptr xp, mp_srcptr yp, mp_size_t size);
|
| -C
|
| -C The hope was for 2.0 c/l here, but that isn't achieved. We're limited by
|
| -C renaming register shortage. Since we need 5 instructions per limb, further
|
| -C unrolling could approach 1.5 c/l.
|
| -C
|
| -C The main loop processes two limbs from each operand on each iteration. An
|
| -C odd size is handled by processing xp[0]^yp[0] at the start. If the size
|
| -C is even that result is discarded, and is repeated by the main loop.
|
| -C
|
| -
|
| -ASM_START()
|
| -PROLOGUE(mpn_hamdist)
|
| -
|
| - C r16 xp
|
| - C r17 yp
|
| - C r18 size
|
| -
|
| - ldq r1, 0(r16) C L0 xp[0]
|
| - ldq r2, 0(r17) C L1 yp[0]
|
| - and r18, 1, r8 C U1 1 if size odd
|
| - srl r18, 1, r18 C U0 size, limb pairs
|
| -
|
| - clr r0 C L0 initial total
|
| - s8addq r8, r17, r17 C U1 yp++ if size odd
|
| - s8addq r8, r16, r16 C L1 xp++ if size odd
|
| - clr r6 C U0 dummy initial xor 1
|
| -
|
| - xor r1, r2, r5 C L initial xor 0
|
| - beq r18, L(one) C U if size==1
|
| -
|
| - cmoveq r8, r31, r5 C L discard first limb if size even
|
| - unop C U
|
| -
|
| -
|
| - ALIGN(16)
|
| -L(top):
|
| - C r0 total accumulating
|
| - C r7 xor 0
|
| - C r8 xor 1
|
| - C r16 xp, incrementing
|
| - C r17 yp, incrementing
|
| - C r18 size, limb pairs, decrementing
|
| -
|
| - ldq r1, 0(r16) C L
|
| - ldq r2, 0(r17) C L
|
| - ctpop r5, r7 C U0
|
| - lda r16, 16(r16) C U
|
| -
|
| - ldq r3, -8(r16) C L
|
| - ldq r4, 8(r17) C L
|
| - ctpop r6, r8 C U0
|
| - lda r17, 16(r17) C U
|
| -
|
| - ldl r31, 256(r16) C L prefetch
|
| - ldl r31, 256(r17) C L prefetch
|
| - xor r1, r2, r5 C U
|
| - lda r18, -1(r18) C U
|
| -
|
| - xor r3, r4, r6 C U
|
| - addq r0, r7, r0 C L
|
| - addq r0, r8, r0 C L
|
| - bne r18, L(top) C U
|
| -
|
| -
|
| - ctpop r6, r8 C U0
|
| - addq r0, r8, r0 C L
|
| -L(one):
|
| - ctpop r5, r7 C U0
|
| - addq r0, r7, r0 C L
|
| -
|
| - ret r31, (r26), 1 C L0
|
| -
|
| -EPILOGUE()
|
| -ASM_END()
|
|
|