On Mon, Feb 14, 2011 at 11:46 AM, Ian Lance Taylor <iant@xxxxxxxxxx> wrote: > kevin diggs <diggskevin38@xxxxxxxxx> writes: > >> "in GENERIC"??? Is this the initial RTL output? > > GENERIC is the name for the tree representation used by the C frontend. > Since a string literal only appears in an operand, STRING_CST is what > you will see in GIMPLE as well. > >> that string literals are far more common. Off the top of your head do >> you know what I would search for for something like: >> >> int im_a_global_int; >> >> which would be treated similarly to a string literal (at least as far >> as how it is accessed), right? > > That's a very general question and I'm not sure just how to answer it. > At the GENERIC/GIMPLE level that is just a variable. At the RTL level > it will turn into a memory address (a MEM). > I am asking if there is something like STRING_CST that the frontend will return for for global'ish (i.e. non-auto stuff that is found from locations other than the stack) data items that I can similarly search the code for. Thanks! kevin P.S.: If you would be so kind as to jot down a sentence or two as to what GIMPLE (some other frontends' tree?) is and how it relates to SIMPLE (C frontend tree representation) I would REALLY appreciate it! Ditto for something called SSA? > Ian >
