[PATCH][2/5] Add gimple_find_sub_bbs

[Richard Biener]

On Thu, 19 Feb 2015, Jakub Jelinek wrote:

> On Thu, Feb 19, 2015 at 01:41:05PM +0100, Richard Biener wrote:
> > I hope we can get rid of this again (which needs re-writing of all
> > targets va-arg gimplification hooks... - we are in need of some
> > generic diamond/triangle CFG pattern builders anyway).
> 
> We already have some in asan.c - create_cond_insert_point - perhaps
> it isn't best named and could use some changes to be generally usable.

Yeah - we should look at individual uses to see what is needed.
I guess some are to generate a COND_EXPR with arms that can have
side-effects, thus produce a single value in two different ways
dependent on a condition.  Others are to just guard a code region.

Richard.