PR37363: PR36090 and PR36182 all over again

[Hans-Peter Nilsson]

> Date: Fri, 5 Sep 2008 14:57:00 +0200
> From: Hans-Peter Nilsson <hp@axis.com>

> Maybe as part of a change from target macro to target hook, with
> LEGITIMATE_CONSTANT_P as a default would fit, even at this
> stage?

Sorry, I mean CONSTANT_P, not LEGITIMATE_CONSTANT_P.  Or maybe a
new macro or hook; LEGITIMATE_CONSTANT_P isn't applicable,
contrary to the comment in cse.c (see the docs and its use; it's
not about being a valid constant at all, it's about being valid
for certain insns).  For the record.

brgds, H-P