[Bug rtl-optimization/65220] [4.8/4.9/5 Regression] integer division in stack alignment for VLA allocation

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65220

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |4.3.4
            Version|unknown                     |5.0
           Keywords|                            |missed-optimization
   Last reconfirmed|                            |2015-02-26
     Ever confirmed|0                           |1
            Summary|Regression: integer         |[4.8/4.9/5 Regression]
                   |division in stack alignment |integer division in stack
                   |for VLA allocation          |alignment for VLA
                   |                            |allocation
   Target Milestone|---                         |4.8.5
      Known to fail|                            |4.7.4, 5.0

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's expansion of __builtin_alloca_with_align that produces the division.
Confirmed.  I can confirm that with 4.3 there is no such division.