[Bug ipa/60315] [4.8 Regression] template constructor switch optimization

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60315

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.9.0, 5.0
           Assignee|unassigned at gcc dot gnu.org      |hubicka at gcc dot gnu.org
            Summary|[4.8/4.9/5 Regression]      |[4.8 Regression] template
                   |template constructor switch |constructor switch
                   |optimization                |optimization
      Known to fail|                            |4.8.4

--- Comment #22 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think the bit from comment#17 was done with

2014-04-14  Richard Biener  <rguenther@suse.de>

        * tree-ssa-forwprop.c (simplify_gimple_switch): Enhance
        check for which sign-changes we allow when forwarding
        a converted value into a switch.

AFAICS the regression was fixed for 4.9.0.