[Bug rtl-optimization/69246] [6 Regression] ICE in distribute_notes, at combine.c:13693 on i686-linux-gnu

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69246

rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |rsandifo at gcc dot gnu.org

--- Comment #7 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
I think the problem with the old code was that we were using
a non-sibcall expander for an ECF_SIBCALL call.  I.e. we generated
an insn that had the stack adjustment, was marked SIBLING_CALL_P,
and matched *sibcall_pop, but we generated it through call_pop
rather than (the nonexistent) sibcall_pop.

Perhaps I should instead have kept the calls.c support for
sibcall_pop and sibcall_value_pop and defined corresponding
expanders for x86.