[Bug tree-optimization/64590] Firefox 34 triggers GCC AVX bug (segfault: XPCCallContext::GetJSContext (this=0xfffc7fffe3e23980))

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64590

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Dâniel Fraga from comment #5)
> If you tell me a way to discover what instruction or how to better debug
> this, jusk ask and I can test here for you.

Try:
disassemble $pc,$pc