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* [Bug tree-optimization/57705] New: Non-constant step induction vars not vectorized
@ 2013-06-25  8:08 jakub at gcc dot gnu.org
  2013-06-25  9:43 ` [Bug tree-optimization/57705] " jakub at gcc dot gnu.org
  0 siblings, 1 reply; 2+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-06-25  8:08 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57705

            Bug ID: 57705
           Summary: Non-constant step induction vars not vectorized
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: jakub at gcc dot gnu.org
          Reporter: jakub at gcc dot gnu.org

int a[1024] __attribute__ ((aligned (32)));
void
bar (int k, int m)
{
  int i, k2 = k;
  for (i = 0; i < 1024; i++)
    {
      a[i] = k2;
      k2 += m + 1;
    }
}

isn't vectorized, although it seems fairly easy to handle these.


^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug tree-optimization/57705] Non-constant step induction vars not vectorized
  2013-06-25  8:08 [Bug tree-optimization/57705] New: Non-constant step induction vars not vectorized jakub at gcc dot gnu.org
@ 2013-06-25  9:43 ` jakub at gcc dot gnu.org
  0 siblings, 0 replies; 2+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-06-25  9:43 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57705

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 30358
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30358&action=edit
gcc49-pr57705.patch

Patch I'm bootstrapping/regtesting right now.


^ permalink raw reply	[flat|nested] 2+ messages in thread
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2013-06-25  8:08 [Bug tree-optimization/57705] New: Non-constant step induction vars not vectorized jakub at gcc dot gnu.org
2013-06-25  9:43 ` [Bug tree-optimization/57705] " jakub at gcc dot gnu.org

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