[Bug target/56807] mingw32: Conflict between stack realignment and stack probe destroys function argument in EAX

[BugMaster at narod dot ru]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56807

--- Comment #20 from Anton Mitrofanov <BugMaster at narod dot ru> ---
I was talking about:

     if (r10_live && eax_live)
        {
          t = plus_constant (Pmode, stack_pointer_rtx, allocate);
          emit_move_insn (gen_rtx_REG (word_mode, R10_REG),
                          gen_frame_mem (word_mode, t));
          t = plus_constant (Pmode, stack_pointer_rtx,
                             allocate - UNITS_PER_WORD);
          emit_move_insn (gen_rtx_REG (word_mode, AX_REG),
                          gen_frame_mem (word_mode, t));
        }

And especially:
          t = plus_constant (Pmode, stack_pointer_rtx,
                             allocate - UNITS_PER_WORD);