[Bug target/81348] PowerPC64: Code built with -mcpu=power9 hits SEGV in RTL split2

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81348

Michael Meissner <meissner at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2017-07-07
                 CC|                            |dje 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> ---
It is a typo in the power9 splitter for loading up a short value to an Altivec
register, sign extending it in preparation for converting it to floating point.

If you look at rs6000.md around line 943, the splitter uses operands[1] (which
is a memory address), when it should use operands[0].