X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2Fgmp%2Fmpn%2Fhppa%2Fhppa1_1%2Fsubmul_1.s;fp=rts%2Fgmp%2Fmpn%2Fhppa%2Fhppa1_1%2Fsubmul_1.s;h=0000000000000000000000000000000000000000;hb=fdf1cd0399158308769fcb2ab7e46e215a68d865;hp=20a5b5ce0a977fd5beeecd90de71151f0338d98c;hpb=e552cfc427d2734b9a9629f2ab1d22f493e775f6;p=ghc-hetmet.git diff --git a/rts/gmp/mpn/hppa/hppa1_1/submul_1.s b/rts/gmp/mpn/hppa/hppa1_1/submul_1.s deleted file mode 100644 index 20a5b5c..0000000 --- a/rts/gmp/mpn/hppa/hppa1_1/submul_1.s +++ /dev/null @@ -1,111 +0,0 @@ -; HP-PA-1.1 __gmpn_submul_1 -- Multiply a limb vector with a limb and -; subtract the result from a second limb vector. - -; Copyright (C) 1992, 1993, 1994, 2000 Free Software Foundation, Inc. - -; This file is part of the GNU MP Library. - -; The GNU MP Library is free software; you can redistribute it and/or modify -; it under the terms of the GNU Lesser General Public License as published by -; the Free Software Foundation; either version 2.1 of the License, or (at your -; option) any later version. - -; The GNU MP Library is distributed in the hope that it will be useful, but -; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public -; License for more details. - -; You should have received a copy of the GNU Lesser General Public License -; along with the GNU MP Library; see the file COPYING.LIB. If not, write to -; the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, -; MA 02111-1307, USA. - - -; INPUT PARAMETERS -; res_ptr r26 -; s1_ptr r25 -; size r24 -; s2_limb r23 - -; This runs at 12 cycles/limb on a PA7000. With the used instructions, it -; can not become faster due to data cache contention after a store. On the -; PA7100 it runs at 11 cycles/limb, and that can not be improved either, -; since only the xmpyu does not need the integer pipeline, so the only -; dual-issue we will get are addc+xmpyu. Unrolling could gain a cycle/limb -; on the PA7100. - -; There are some ideas described in mul_1.s that applies to this code too. - -; It seems possible to make this run as fast as __gmpn_addmul_1, if we use -; sub,>>= %r29,%r19,%r22 -; addi 1,%r28,%r28 -; but that requires reworking the hairy software pipeline... - - .code - .export __gmpn_submul_1 -__gmpn_submul_1 - .proc - .callinfo frame=64,no_calls - .entry - - ldo 64(%r30),%r30 - fldws,ma 4(%r25),%fr5 - stw %r23,-16(%r30) ; move s2_limb ... - addib,= -1,%r24,L$just_one_limb - fldws -16(%r30),%fr4 ; ... into fr4 - add %r0,%r0,%r0 ; clear carry - xmpyu %fr4,%fr5,%fr6 - fldws,ma 4(%r25),%fr7 - fstds %fr6,-16(%r30) - xmpyu %fr4,%fr7,%fr8 - ldw -12(%r30),%r19 ; least significant limb in product - ldw -16(%r30),%r28 - - fstds %fr8,-16(%r30) - addib,= -1,%r24,L$end - ldw -12(%r30),%r1 - -; Main loop -L$loop ldws 0(%r26),%r29 - fldws,ma 4(%r25),%fr5 - sub %r29,%r19,%r22 - add %r22,%r19,%r0 - stws,ma %r22,4(%r26) - addc %r28,%r1,%r19 - xmpyu %fr4,%fr5,%fr6 - ldw -16(%r30),%r28 - fstds %fr6,-16(%r30) - addc %r0,%r28,%r28 - addib,<> -1,%r24,L$loop - ldw -12(%r30),%r1 - -L$end ldw 0(%r26),%r29 - sub %r29,%r19,%r22 - add %r22,%r19,%r0 - stws,ma %r22,4(%r26) - addc %r28,%r1,%r19 - ldw -16(%r30),%r28 - ldws 0(%r26),%r29 - addc %r0,%r28,%r28 - sub %r29,%r19,%r22 - add %r22,%r19,%r0 - stws,ma %r22,4(%r26) - addc %r0,%r28,%r28 - bv 0(%r2) - ldo -64(%r30),%r30 - -L$just_one_limb - xmpyu %fr4,%fr5,%fr6 - ldw 0(%r26),%r29 - fstds %fr6,-16(%r30) - ldw -12(%r30),%r1 - ldw -16(%r30),%r28 - sub %r29,%r1,%r22 - add %r22,%r1,%r0 - stw %r22,0(%r26) - addc %r0,%r28,%r28 - bv 0(%r2) - ldo -64(%r30),%r30 - - .exit - .procend