Re: [patch] tree-flow.h: Remove has_escape_site from bb_ann_d.

[Kazu Hirata <kazu at cs dot umass dot edu>]

Hi Richard,

> > ISTR rth asking for this bit at one time.  But if he doesn't have
> > a use for it, the patch is fine.
> 
> I never got around to implementing the special cases for builtins
> and CALL_EXPR_HAS_RETURN_SLOT_ADDR.

Are you going to?  Can I either remove the bit or move it to flags in
basic_block_def?

I am thinking about folding bb_ann_d into basic_block_def.  It's not
difficult to move incoming_edge_threaded to a pass-specific variable.
Then we are left with two pointers, namely phi_nodes and predictions.
But then we need one pointer to point to bb_ann_d from basic_block_def
anyway.

Kazu Hirata