From 66221417957963c1d2df8d79f43573e328df2275 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Fri, 20 Nov 2009 08:30:20 -0800 Subject: Properly recover from shorter read. --- ChangeLog | 6 ++++++ sysdeps/ia64/memchr.S | 14 +++++++++++--- 2 files changed, 17 insertions(+), 3 deletions(-) diff --git a/ChangeLog b/ChangeLog index a60bfcc8e6..c99965f6e4 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2009-11-18 H.J. Lu + + [BZ #10162] + * sysdeps/ia64/memchr.S: Don't use a simple loop on data shorter + than software pipeline. Properly recover from shorter read. + 2009-11-19 Ulrich Drepper [BZ #10958] diff --git a/sysdeps/ia64/memchr.S b/sysdeps/ia64/memchr.S index e721e1714f..cdd71ca5a5 100644 --- a/sysdeps/ia64/memchr.S +++ b/sysdeps/ia64/memchr.S @@ -71,8 +71,7 @@ ENTRY(__memchr) cmp.ne p7, p0 = r0, r0 // clear p7 extr.u chr = in1, 0, 8 // chr = (unsigned char) in1 mov len = in2 - // use a simple loop on data shorter than software pipeline - cmp.gtu p6, p0 = ((MEMLAT + 1) * 8), in2 + cmp.gtu p6, p0 = 16, in2 // use a simple loop for short (p6) br.cond.spnt .srchfew ;; // searches sub loopcnt = 8, tmp // loopcnt = 8 - tmp cmp.eq p6, p0 = tmp, r0 @@ -127,7 +126,16 @@ ENTRY(__memchr) br.ret.sptk.many b0 .recovery: - adds ret0 = -((MEMLAT + 1) * 8), ret0;; +#if MEMLAT != 6 +# error "MEMLAT must be 6!" +#endif +(p[MEMLAT-6]) add ret0 = -8, ret0;; +(p[MEMLAT-5]) add ret0 = -8, ret0;; +(p[MEMLAT-4]) add ret0 = -8, ret0;; +(p[MEMLAT-3]) add ret0 = -8, ret0;; +(p[MEMLAT-2]) add ret0 = -8, ret0;; +(p[MEMLAT-1]) add ret0 = -8, ret0;; +(p[MEMLAT]) add ret0 = -8, ret0;; (p[MEMLAT+1]) add ret0 = -8, ret0;; (p[MEMLAT+2]) add ret0 = -8, ret0;; .l4: -- cgit 1.4.1