[Bug tree-optimization/122142] New: Add fold_before_rtl_expansion_p to gimple-fold

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122142

            Bug ID: 122142
           Summary: Add fold_before_rtl_expansion_p  to gimple-fold
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Keywords: internal-improvement
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
          Assignee: pinskia at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

From
https://inbox.sourceware.org/gcc-patches/CAFiYyc1jzZSZNhTas-DdMBFOzH1p96oGN=ovj6fyjt8hzdu...@mail.gmail.com/T/#u
:
```
Seeing the above more and more I wonder if we want to abstract
that into an inline function (in gimple-fold.h?), like
fold_before_rtl_expansion_p ()
or so?  Similar to the canonicalize_math_p (),
optimize_vectors_before_lowering_p (), etc.
predicates we have in {gimple,generic}-match-head.cc
```