[X86] Add test RUN lines to show cases where we use 512-bit vcmppd/ps with...

[X86] Add test RUN lines to show cases where we use 512-bit vcmppd/ps with garbage upper bits for 128/256-bit strict_fsetcc

On KNL targets, we widen 128/256-bit strict_fsetcc nodes to
512-bits without forcing the upper bits to zero. This can cause
spurious exceptions due to garbage upper bits. This behavior was
inherited from the non-strict case where the spurious exception
isn't a problem.