[tree-ssa-branch]: Steensgaard alias analysis

[Graham Stott]

All,

Diego Novillo wrote:
> On Mon, 15 Jul 2002, Daniel Berlin wrote:
> 
> 
>>Diego, I added a flag to turn it on and off, commented most of it, and 
>>have worked more on it (It now handles pointers to members properly, etc).
>>
> 
> Thanks.  I've got a few superficial comments, but I think we can
> commit it so that you can keep working on it.
> 
> - Changelogs are missing.
> 
> - None of the new files have copyright notices.
>
Bootstrap fails with Ada enabled (ie. a gnat compiler was found
during configure.) The errors I get are:

In file included from /tree-ssa-branch/gcc/gcc/ada/decl.c:6216:
gt-ada-decl.h: In function `gt_ggc_ma_dummy_node_table':
gt-ada-decl.h:33: warning: comparison between signed and unsigned
In file included from /tree-ssa-branch/gcc/gcc/ada/utils.c:3338:
gt-ada-utils.h: In function `gt_ggc_ma_associate_gnat_to_gnu':
gt-ada-utils.h:66: warning: comparison between signed and unsigned
/tree-ssa-branch/gcc/gcc/ada/tracebak.c: In function `__gnat_backtrace':
/tree-ssa-branch/gcc/gcc/ada/tracebak.c:271: warning: comparison of unsigned expression < 0 is always false
ada/utils.o: In function `pushdecl':
/tree-ssa-branch/gcc/gcc/ada/utils.c:437: undefined reference to `gt_ggc_r_gt_tree_alias_steen_h'
libbackend.a(gtype-desc.o): In function `gt_ggc_mx_alias_type_def':
/tree-ssa-branch/build-x86/gcc/gtype-desc.c:56: undefined reference to `alias_bottom'

I'm not sure how to fix these because I haven't kept up with the new GC stuff.

For now I'm bootstrapping without ada.

Graham