Re: /f flag in RTL

[Jeffrey A Law <law at cygnus dot com>]

  In message <032201bfb5b6$18458db0$3725558d@cs.pub.ro>you write:
  > I think this flag is not documented.  I found it in a mem rtx
  > 
  > (insn 34 31 37 (set (mem/f:SI (symbol_ref:SI ("val")) 0)
  >         (reg:SI 41)) 156 {movsi+1} (insn_list 29 (nil))
  >     (nil))
  > 
  > Could you tell me please what does it stand for here and if it also carries
  > info in other rtl expressions ?
Read the manual more closely (or maybe you just have an out of date version
of the manual).

@findex MEM_SCALAR_P
@cindex @code{mem} and @samp{/f}
@cindex @code{frame_related}, in@code{mem}
@cindex @samp{/f} in RTL dump
@item MEM_SCALAR_P (@var{x})
In @code{mem} expressions, nonzero for reference to a scalar known not
to be a member of a structure, union, or array.  Zero for such
references and for indirections through pointers, even pointers pointing
to scalar types.  If both this flag and MEM_STRUCT_P are clear, then we
don't know whether this MEM is in a structure or not.  Both flags should
never be simultaneously set.