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* [Bug target/56855] New: optab_handler (op=vashr_optab, mode=V4DImode) finds nothing
@ 2013-04-06 10:02 glisse at gcc dot gnu.org
  2013-04-07 21:04 ` [Bug target/56855] " glisse at gcc dot gnu.org
  2013-04-07 21:18 ` glisse at gcc dot gnu.org
  0 siblings, 2 replies; 3+ messages in thread
From: glisse at gcc dot gnu.org @ 2013-04-06 10:02 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56855

             Bug #: 56855
           Summary: optab_handler (op=vashr_optab, mode=V4DImode) finds
                    nothing
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: glisse@gcc.gnu.org
            Target: x86_64-linux-gnu


Hello,

we seem to be missing a vashrv4di3 expander. I noticed it because this code:

typedef long long vec __attribute__((vector_size(32)));

vec f(vec a, vec b){
  vec m={1,2,3,4};
  return a>>m;
}

is lowered to scalar ops by the tree vector lowering pass even with -mavx2.


^ permalink raw reply	[flat|nested] 3+ messages in thread
* [Bug target/56855] optab_handler (op=vashr_optab, mode=V4DImode) finds nothing
  2013-04-06 10:02 [Bug target/56855] New: optab_handler (op=vashr_optab, mode=V4DImode) finds nothing glisse at gcc dot gnu.org
@ 2013-04-07 21:04 ` glisse at gcc dot gnu.org
  2013-04-07 21:18 ` glisse at gcc dot gnu.org
  1 sibling, 0 replies; 3+ messages in thread
From: glisse at gcc dot gnu.org @ 2013-04-07 21:04 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56855

Marc Glisse <glisse at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID

--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> 2013-04-07 21:03:55 UTC ---
Uh, I seem to have invented an instruction that doesn't exist, sorry...


^ permalink raw reply	[flat|nested] 3+ messages in thread
* [Bug target/56855] optab_handler (op=vashr_optab, mode=V4DImode) finds nothing
  2013-04-06 10:02 [Bug target/56855] New: optab_handler (op=vashr_optab, mode=V4DImode) finds nothing glisse at gcc dot gnu.org
  2013-04-07 21:04 ` [Bug target/56855] " glisse at gcc dot gnu.org
@ 2013-04-07 21:18 ` glisse at gcc dot gnu.org
  1 sibling, 0 replies; 3+ messages in thread
From: glisse at gcc dot gnu.org @ 2013-04-07 21:18 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56855

--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> 2013-04-07 21:18:28 UTC ---
There is still something suboptimal in that with -mxop, vashrv2di3 works fine,
but tree-vect-generic lowers vashrv4di3 to scalars instead of v2di. But that
doesn't look like a target issue.


^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2013-04-07 21:18 UTC | newest]

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2013-04-06 10:02 [Bug target/56855] New: optab_handler (op=vashr_optab, mode=V4DImode) finds nothing glisse at gcc dot gnu.org
2013-04-07 21:04 ` [Bug target/56855] " glisse at gcc dot gnu.org
2013-04-07 21:18 ` glisse at gcc dot gnu.org

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