[Bug tree-optimization/93116] New: match.pd uses convert/tree_nop_conversion_p instead of nop_convert

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93116

            Bug ID: 93116
           Summary: match.pd uses convert/tree_nop_conversion_p instead of
                    nop_convert
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
          Assignee: pinskia at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

There are a few places in match.pd which uses convert followed by a check to
tree_nop_conversion_p but they could be simplified down to just using
nop_convert instead.