[Bug c/67967] ICE in i386_pe_seh_unwind_emit

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67967

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Actually, gcc can now handle misaligned stack for x86_64 and it emits 

    {
      rtx unspec = gen_rtx_UNSPEC (mode, gen_rtvec (1, reg), UNSPEC_STOREU);
      insn = emit_insn (gen_rtx_SET (mem, unspec));
    }

that is later decorated with:

    add_reg_note (insn, REG_CFA_EXPRESSION, gen_rtx_SET (mem, reg));

So, i386_pe_seh_unwind_emit has to be updated to handle REG_CFA_EXPRESSION.