I've disabled them in the spec file for F21+ (as of 0.32.6-4.fc21), but if you build with them enabled and run 'make check' you'll notice a bunch of stuff failing. This manifests in X as (for example) the address bar in yelp being painted black. The fast paths themselves live in pixman/pixman-vmx.c, and if I had to guess at where to start fixing things I'd look at splat_alpha() which I think is making some (big-endian) assumptions about vector layout.
Created attachment 961594 [details] pixman_ppc64le_no_vec_lvsl_warning.patch
for information, I am still investigating the problem but with no success yet. * I have a pixman_ppc64le_no_vec_lvsl_warning.patch that only avoid warning at compilation time. (appended in comment 2) * I am still trying to find a simple test to gdb to understand the errors reported by make check.
What is the current status of this bug?
(In reply to Rafael Fonseca from comment #4) > What is the current status of this bug? I do not work anymore on this one, so do not know the status.
Looking at the package's changelog: %changelog * Sun Aug 09 2015 Oded Gabbay <oded.gabbay> 0.33.2-1 - pixman 0.33.2 - Enable VMX fast paths on ppc64le now that they are fixed