SPE scalar float instructions

[Zack Weinberg]

Currently, the SPE scalar float instructions are predicated on
TARGET_HARD_FLOAT && !TARGET_FPRS (and TARGET_E500_DOUBLE for DFmode)
but not on TARGET_SPE.  This can cause problems in an embedded context
- as one of CodeSourcery's customers points out,

> This will indeed post a problem, because those instructions require
> MSR[SPE] bit be set, which is not true for all cases.  SPE unavailable
> exception may result.

I'm wondering if TARGET_SPE should be added to the controlling
condition for all those instructions.  Thoughts?

zw