Floating point registers vs. LOAD_EXTEND_OP on alpha

[Gabriel Dos Reis]

Eric Botcazou <ebotcazou@libertysurf.fr> writes:

| > Ok, I have checked the patch in, relying on Richard Sandiford's
| > regression test.
| 
| Thanks.
| 
| > The 3.3 branch is also marked as open for bug fixes, but
| > we still need somebody to test the two patches in the 3.3 branch
| > on one of the affected systems to get closure on PR optimization/11864.
| 
| FYI, the patches will probably require a change to the SPARC back-end, 
| because it is affected by the very same problem as the MIPS and PA 
| back-ends, but currently doesn't define CANNOT_CHANGE_MODE_CLASS.
| So I don't think the patches are suitable for the 3.3 branch.

This patch, if it were to be backported to the 3.3.x series, would not
happen before 3.3.3 is out.  I've already missed the release date y a
week.

Thanks,

-- Gaby