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[BZ #2013]

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2006-01-05  H.J. Lu  <hongjiu.lu@intel.com>
	[BZ #2013]
	* sysdeps/ia64/memccpy.S: Properly handle recovery for
	predicated speculative load.
This commit is contained in:
Roland McGrath 2006-03-02 04:49:27 +00:00
parent 672ec465f2
commit 6a68e9f975
1 changed files with 46 additions and 9 deletions
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55
sysdeps/ia64/memccpy.S
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@ -1,6 +1,6 @@
/* Optimized version of the memccpy() function.
This file is part of the GNU C Library.
Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.
Copyright (C) 2000,2001,2003,2006 Free Software Foundation, Inc.
Contributed by Dan Pop <Dan.Pop@cern.ch>.
The GNU C Library is free software; you can redistribute it and/or
@ -183,27 +183,64 @@ ENTRY(memccpy)
br.ret.sptk.many b0
.recovery1:
adds src = -(MEMLAT + 6 + 1) * 8, asrc
#if MEMLAT != 6
# error "MEMLAT must be 6!"
#endif
adds src = -8, asrc
mov loopcnt = ar.lc
mov tmp = ar.ec ;;
sub sh1 = (MEMLAT + 6 + 1), tmp
shr.u sh2 = sh2, 3
mov tmp = ar.ec
;;
(p[0]) adds src = -8, src
;;
(p[1]) adds src = -8, src
sub sh1 = (MEMLAT + 6 + 1), tmp
;;
(p[2]) adds src = -8, src
;;
(p[3]) adds src = -8, src
shl loopcnt = loopcnt, 3
sub src = src, sh2
;;
(p[4]) adds src = -8, src
;;
(p[5]) adds src = -8, src
shl sh1 = sh1, 3
;;
(p[6]) adds src = -8, src
;;
(p[7]) adds src = -8, src
shl tmp = tmp, 3
;;
(p[8]) adds src = -8, src
;;
(p[9]) adds src = -8, src
shr.u sh2 = sh2, 3
;;
(p[10]) adds src = -8, src
;;
(p[11]) adds src = -8, src
add len = len, loopcnt
add src = sh1, src ;;
;;
sub src = src, sh2
;;
add len = tmp, len
.back1:
add src = sh1, src
br.cond.sptk .cpyfew
.recovery2:
add tmp = -(MEMLAT + 3) * 8, src
#if MEMLAT != 6
# error "MEMLAT must be 6!"
#endif
add tmp = -8, src
(p7) br.cond.spnt .gotit
;;
(p[0]) add tmp = -8, tmp ;;
(p[1]) add tmp = -8, tmp ;;
(p[2]) add tmp = -8, tmp ;;
(p[3]) add tmp = -8, tmp ;;
(p[4]) add tmp = -8, tmp ;;
(p[5]) add tmp = -8, tmp ;;
(p[6]) add tmp = -8, tmp ;;
(p[7]) add tmp = -8, tmp ;;
ld8 r[MEMLAT+2] = [tmp] ;;
xor pos0[1] = r[MEMLAT+2], charx8 ;;
czx1.r pos0[1] = pos0[1] ;;