[Bug tree-optimization/121356] New: [13/14/15/16 Regression] missing VRP

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121356

            Bug ID: 121356
           Summary: [13/14/15/16 Regression] missing VRP
           Product: gcc
           Version: 14.2.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

Created attachment 62030
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62030&action=edit
testcase for missed optimization

Take the attached testcase, the if for `(unsigned long long)(lane_size * 8) <=
64llu` is not removed at -O2 since GCC 13.

This is related to PR 121345.