https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78953
Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-12-29
CC| |dje at gcc dot gnu.org,
| |segher at gcc dot gnu.org,
| |wschmidt at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |meissner at gcc dot
gnu.org
Ever confirmed|0 |1
--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
A quick glance at the code, shows that the V4SImode register is a traditional
floating point register, but the splitter for vsx_extract_<mode>_p9 requires
the register to be a traditional altivec register.
I suspect vsx_extract_v4si_p9 is called from vsx_extract_si. The later has a
constraint (wJ) that allows the operand to go in traditional floating registers
in addition to Altivec registers (v).
