From e65caf1f1df4ecc122da3d30689ee2e8e2bd354f Mon Sep 17 00:00:00 2001 From: Vidya Ranganathan Date: Mon, 10 Mar 2014 12:20:36 -0400 Subject: PowerPC: strspn optimization for PPC64/POWER7 The optimization is achieved by following techniques: > hashing of needle. > hashing avoids scanning of duplicate entries in needle across the string. > initializing the hash table with Vector instructions (VSX) by quadword access. > unrolling when scanning for character in string across hash table. --- ChangeLog | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'ChangeLog') diff --git a/ChangeLog b/ChangeLog index 06165c5..c1b5622 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,16 @@ +2014-03-11 Vidya Ranganathan + + * sysdeps/powerpc/powerpc64/power7/strspn.S: New file: Optimization. + * sysdeps/powerpc/powerpc64/multiarch/strspn.c: New file: + multiarch strspn for PPC64. + * sysdeps/powerpc/powerpc64/multiarch/strspn-ppc64.c: New file + * sysdeps/powerpc/powerpc64/multiarch/strspn-power7.S: New file + * sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c: + (__libc_ifunc_impl_list): Likewise. + * sysdeps/powerpc/powerpc64/multiarch/Makefile: Add strspn + multiarch optimizations + * string/strspn.c (strspn): Using macro to redefine symbol name. + 2014-03-10 Vidya Ranganathan Adhemerval Zanella -- cgit v1.1