[committed] Skip floating-point var-expand tests for soft-float MIPS targets

[Richard Sandiford]

Bob Wilson <bwilson@tensilica.com> writes:
> Xtensa soft float targets have the same issue.  What would you think
> about generalizing your check to handle other targets?  This patch
> skips these tests for Xtensa, and I think preserves the current
> behavior for MIPS.  I flipped the target procedure to check for "hard
> float" instead of "soft float" just because that seemed more natural
> when dealing with multiple targets.

Looks good to me, thanks, although I can't approve it.

Richard