[Bug tree-optimization/93258] [10 regression] Missed constant folding from constructor

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93258

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can't reproduce on x86_64-linux:
$ rm pr93258.C.*; /opt/notnfs/gcc-bisect/obj/gcc/cc1plus.272123 -quiet -w -O3
pr93258.C -fdump-tree-fre3; cat pr93258.C.* | tail -n 9
  <bb 2> [local count: 1073741824]:
  p = ck;
  D.2585 = bw::ci::cj (0B, 6); [return slot optimization]
  D.2585 ={v} {CLOBBER};
  __builtin_unreachable ();

}


$ rm pr93258.C.*; /opt/notnfs/gcc-bisect/obj/gcc/cc1plus.272125 -quiet -w -O3
pr93258.C -fdump-tree-fre3; cat pr93258.C.* | tail -n 9
  <bb 2> [local count: 1073741824]:
  p = ck;
  D.2585 = bw::ci::cj (0B, 6); [return slot optimization]
  D.2585 ={v} {CLOBBER};
  __builtin_unreachable ();

}


$ rm pr93258.C.*; /opt/notnfs/gcc-bisect/obj/gcc/cc1plus.280156 -quiet -w -O3
pr93258.C -fdump-tree-fre3; cat pr93258.C.* | tail -n 9
  <bb 2> [local count: 1073741824]:
  p = ck;
  D.2606 = bw::ci::cj (0B, 6); [return slot optimization]
  D.2606 ={v} {CLOBBER};
  __builtin_unreachable ();

}