[Bug target/106279] reload problem on arm iwmmxt

[rearnsha at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106279

Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2022-09-01
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #4 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
In a general cross compiler you need: -march=iwmmxt -mfpu=vfp -mfloat-abi=hard
to reproduce.

This seems to need a combination of VFP, iWMMX and the hard-float ABI.  I don't
think we've ever claimed to support this.  Whilst there may be a few devices
with both iWMMX and VFP present, I think that's mostly for backwards
compatibility.

So I think we should resolve this as WONTFIX, but it would be nice if the
compiler could reject this upfront rather than ICEing later on.