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Subject: [Bug target/51920] 64-bit gcc.target/sparc/vec-init-1-vis1.c FAILs
Date: Sun, 29 Jan 2012 23:51:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51920

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
         AssignedTo|unassigned at gcc dot       |ebotcazou at gcc dot
                   |gnu.org                     |gnu.org

--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-01-29 23:23:19 UTC ---
> The output operand of all insns generating 'fpmerge' only accept the proper 'e'
> constraint.

'e' doesn't imply even-numbered though, there is no specific constraint for
that.

I think it's the long-standing issue with word-mode paradoxical subregs of FP
regs in 64-bit mode, for which both the PA and the SPARC ports have a kludge,
in the form of the CANNOT_CHANGE_MODE_CLASS macro.

I'm going to kludge again for this one by tweaking vector_init_fpmerge a bit.