Update the in-tree GMP; fixes trac #832

[ghc-hetmet.git] / rts / gmp / mpn / alpha / rshift.asm

diff --git a/rts/gmp/mpn/alpha/rshift.asm b/rts/gmp/mpn/alpha/rshift.asm
deleted file mode 100644 (file)
index aa25eda..0000000
--- a/rts/gmp/mpn/alpha/rshift.asm
+++ /dev/null
@@ -1,102 +0,0 @@
-dnl  Alpha mpn_rshift -- Shift a number right.
-
-dnl  Copyright (C) 1994, 1995, 2000 Free Software Foundation, Inc.
-
-dnl  This file is part of the GNU MP Library.
-
-dnl  The GNU MP Library is free software; you can redistribute it and/or modify
-dnl  it under the terms of the GNU Lesser General Public License as published by
-dnl  the Free Software Foundation; either version 2.1 of the License, or (at your
-dnl  option) any later version.
-
-dnl  The GNU MP Library is distributed in the hope that it will be useful, but
-dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
-dnl  License for more details.
-
-dnl  You should have received a copy of the GNU Lesser General Public License
-dnl  along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
-dnl  the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-dnl  MA 02111-1307, USA.
-
-include(`../config.m4')
-
-dnl  INPUT PARAMETERS
-dnl  res_ptr   r16
-dnl  s1_ptr    r17
-dnl  size      r18
-dnl  cnt       r19
-
-dnl  This code runs at 4.8 cycles/limb on the 21064.  With infinite unrolling,
-dnl  it would take 4 cycles/limb.  It should be possible to get down to 3
-dnl  cycles/limb since both ldq and stq can be paired with the other used
-dnl  instructions.  But there are many restrictions in the 21064 pipeline that
-dnl  makes it hard, if not impossible, to get down to 3 cycles/limb:
-
-dnl  1. ldq has a 3 cycle delay, srl and sll have a 2 cycle delay.
-dnl  2. Only aligned instruction pairs can be paired.
-dnl  3. The store buffer or silo might not be able to deal with the bandwidth.
-
-ASM_START()
-PROLOGUE(mpn_rshift)
-       ldq     r4,0(r17)       C load first limb
-       addq    r17,8,r17
-       subq    r31,r19,r7
-       subq    r18,1,r18
-       and     r18,4-1,r20     C number of limbs in first loop
-       sll     r4,r7,r0        C compute function result
-
-       beq     r20,$L0
-       subq    r18,r20,r18
-
-       ALIGN(8)
-$Loop0:
-       ldq     r3,0(r17)
-       addq    r16,8,r16
-       addq    r17,8,r17
-       subq    r20,1,r20
-       srl     r4,r19,r5
-       sll     r3,r7,r6
-       bis     r3,r3,r4
-       bis     r5,r6,r8
-       stq     r8,-8(r16)
-       bne     r20,$Loop0
-
-$L0:   beq     r18,$Lend
-
-       ALIGN(8)
-$Loop: ldq     r3,0(r17)
-       addq    r16,32,r16
-       subq    r18,4,r18
-       srl     r4,r19,r5
-       sll     r3,r7,r6
-
-       ldq     r4,8(r17)
-       srl     r3,r19,r1
-       bis     r5,r6,r8
-       stq     r8,-32(r16)
-       sll     r4,r7,r2
-
-       ldq     r3,16(r17)
-       srl     r4,r19,r5
-       bis     r1,r2,r8
-       stq     r8,-24(r16)
-       sll     r3,r7,r6
-
-       ldq     r4,24(r17)
-       srl     r3,r19,r1
-       bis     r5,r6,r8
-       stq     r8,-16(r16)
-       sll     r4,r7,r2
-
-       addq    r17,32,r17
-       bis     r1,r2,r8
-       stq     r8,-8(r16)
-
-       bgt     r18,$Loop
-
-$Lend: srl     r4,r19,r8
-       stq     r8,0(r16)
-       ret     r31,(r26),1
-EPILOGUE(mpn_rshift)
-ASM_END()