I don't have the time I'd like to since I'm running about a month behind
schedule, but I wanted to make the code I've been experimenting with
available a bit before cauldron so we can discuss it both here and in
the upcoming BOF.
I created a quick overview document, and managed to keep it to 5 pages
:-) Therefore it is far from complete, but it touches all the major
things I think. It is here:
https://gcc.gnu.org/wiki/rearch?action=AttachFile&do=view&target=gccrestructureplan3.0.pdf
This code is all located on the branch 're-arch2'. Its based off
mainline revision 211758 dated June 17/2014, so its relatively modern
(after wide-int went in). It builds, bootstraps and passes all regressions.
I'll send the code changes as 2 patches, directly from the branch.
Neither are intended to be proposed for mainline as is, so you don't
need to critique them... Im not looking for a formal review, I know its
a mess.. and there is no changelog. Its really to give you a feel
for what it is and how it works. Before this code is ready to go in,
I'll also be re-porting whatever optimizations/files are converted since
there are a couple of generations of changes, some of which are probably
obsolete now. I've thrown a few comments in, but I primarily want to
discuss the general approach and future direction.
The first patch is the new code.. The gimple classes and the wrapper
classes that act as smart pointers to the gimple objects, as well as
some interface stuff to tree.[ch] routines gimple needs at the moment.
The second patch is the rest of the changes which represent a selection
of .h and .c files I converted, plus some unfortunate ripple effects
required in other .c and .h files :-P (more on that later). I fully
converted:
tree-into-ssa.[ch] <- seemed like a good test
gimple-expr.[ch] <- lots of gimple utilities
tree-ssa-ccp.c <- lot of constants and expressions
ssa-iterators.h <- core file used by a lot of optimizations
most of gimple.h <- Wanted access to gimple statements to use
gimple classes
Im travelling Wednesday night, expect to be jetlagged Thurs and have
meetings Friday, but I will try to respond here when I can. I'll be
around throughout cauldron and at the re-arch2 BOF if anyone wants to
tackle me to discuss any of this... good, bad, or indifferent :-).
Andrew
