Re: [PATCH] Fix PR50969

2012-02-03 Thread William J. Schmidt
On Fri, 2012-02-03 at 14:41 +0100, Richard Guenther wrote: > On Fri, Feb 3, 2012 at 2:24 PM, William J. Schmidt > wrote: > > This fixes http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50969 by slightly > > raising the cost of vector permutes on powerpc64 VSX targets (and > > ensuring those costs are

Re: [PATCH] Fix PR50969

2012-02-03 Thread Richard Guenther
On Fri, Feb 3, 2012 at 2:24 PM, William J. Schmidt wrote: > This fixes http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50969 by slightly > raising the cost of vector permutes on powerpc64 VSX targets (and > ensuring those costs are correctly used).  This reverses the performance > loss for 168.wupwise

[PATCH] Fix PR50969

2012-02-03 Thread William J. Schmidt
This fixes http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50969 by slightly raising the cost of vector permutes on powerpc64 VSX targets (and ensuring those costs are correctly used). This reverses the performance loss for 168.wupwise, and gives a slight boost to 433.milc as well. In the long run, w