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authorRoland McGrath <roland@gnu.org>1995-10-16 01:37:51 +0000
committerRoland McGrath <roland@gnu.org>1995-10-16 01:37:51 +0000
commit8f5ca04bc7fd53741d80117df992995ace8f6d2d (patch)
treee39c13fc198b22ec55647259a8080051988e8c69 /sysdeps/hppa/hppa1.1/addmul_1.s
parent5d82cf5c55f56ae10d3b0a205d1fcc7de1cf56a0 (diff)
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Sat Oct 14 02:52:36 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
* malloc/malloc.c (_malloc_internal): Performance fix. Move if statement out of loop. * stdio/_itoa.c, stdio/_itoa.h: Complete rewrite. Much faster implementation using GMP functions. Contributed by Torbjorn Granlund and Ulrich Drepper. * stdio/test_rdwr.c: Include <errno.h>. * sysdeps/i386/i586/Implies: New file. New highly optimized string functions for i[345]86. * sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files. * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files. * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files. * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files. * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files. * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files. * sysdeps/i386/i586/strlen.S: New file. * sysdeps/i386/memchr.c: Removed. There is now an assembler version. * sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did not correspond to used values. * sysdeps/unix/sysv/linux/nfs/nfs.h: New file. Simply a wrapper around a kernel header file. * sysdeps/unix/sysv/linux/Dist: Add it. * sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers): Likewise. * sysdeps/unix/sysv/linux/local_lim.h: Rewrite. Instead of defining ourself we use a kernel header file. * sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system call handler for i586. * sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up. Sat Oct 14 02:52:36 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de> * malloc/malloc.c (_malloc_internal): Performance fix. Move if statement out of loop. * stdio/_itoa.c, stdio/_itoa.h: Complete rewrite. Much faster implementation using GMP functions. Contributed by Torbjorn Granlund and Ulrich Drepper. * stdio/test_rdwr.c: Include <errno.h>. * sysdeps/i386/i586/Implies: New file. New highly optimized string functions for i[345]86. * sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files. * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files. * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files. * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files. * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files. * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files. * sysdeps/i386/i586/strlen.S: New file. * sysdeps/i386/memchr.c: Removed. There is now an assembler version. * sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did not correspond to used values. * sysdeps/unix/sysv/linux/nfs/nfs.h: New file. Simply a wrapper around a kernel header file. * sysdeps/unix/sysv/linux/Dist: Add it. * sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers): Likewise. * sysdeps/unix/sysv/linux/local_lim.h: Rewrite. Instead of defining ourself we use a kernel header file. * sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system call handler for i586. * sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up.
Diffstat (limited to 'sysdeps/hppa/hppa1.1/addmul_1.s')
-rw-r--r--sysdeps/hppa/hppa1.1/addmul_1.s101
1 files changed, 101 insertions, 0 deletions
diff --git a/sysdeps/hppa/hppa1.1/addmul_1.s b/sysdeps/hppa/hppa1.1/addmul_1.s
new file mode 100644
index 0000000000..a9dfdd1c28
--- /dev/null
+++ b/sysdeps/hppa/hppa1.1/addmul_1.s
@@ -0,0 +1,101 @@
+; HP-PA-1.1 __mpn_addmul_1 -- Multiply a limb vector with a limb and
+; add the result to a second limb vector.
+
+; Copyright (C) 1992, 1993, 1994 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 Library General Public License as published by
+; the Free Software Foundation; either version 2 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 Library General Public
+; License for more details.
+
+; You should have received a copy of the GNU Library General Public License
+; along with the GNU MP Library; see the file COPYING.LIB. If not, write to
+; the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+; INPUT PARAMETERS
+; res_ptr r26
+; s1_ptr r25
+; size r24
+; s2_limb r23
+
+; This runs at 11 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 10 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.
+
+ .code
+ .export __mpn_addmul_1
+__mpn_addmul_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$loop ldws 0(%r26),%r29
+ fldws,ma 4(%r25),%fr5
+ add %r29,%r19,%r19
+ stws,ma %r19,4(%r26)
+ addc %r28,%r1,%r19
+ xmpyu %fr4,%fr5,%fr6
+ ldw -16(%r30),%r28
+ fstds %fr6,-16(%r30)
+ addc %r0,%r28,%r28
+ addib,<> -1,%r24,L$loop
+ ldw -12(%r30),%r1
+
+L$end ldw 0(%r26),%r29
+ add %r29,%r19,%r19
+ stws,ma %r19,4(%r26)
+ addc %r28,%r1,%r19
+ ldw -16(%r30),%r28
+ ldws 0(%r26),%r29
+ addc %r0,%r28,%r28
+ add %r29,%r19,%r19
+ stws,ma %r19,4(%r26)
+ addc %r0,%r28,%r28
+ bv 0(%r2)
+ ldo -64(%r30),%r30
+
+L$just_one_limb
+ xmpyu %fr4,%fr5,%fr6
+ ldw 0(%r26),%r29
+ fstds %fr6,-16(%r30)
+ ldw -12(%r30),%r1
+ ldw -16(%r30),%r28
+ add %r29,%r1,%r19
+ stw %r19,0(%r26)
+ addc %r0,%r28,%r28
+ bv 0(%r2)
+ ldo -64(%r30),%r30
+
+ .exit
+ .procend