Re: [tree-ssa, lno] lno-branch created

[Daniel Berlin <dberlin at dberlin dot org>]

On Dec 27, 2003, at 12:38 AM, Pop Sébastian wrote:

> Hi,
>
> The "lno-branch" contains the scalar evolution and the data dependence
> analyzers.  I have put the version of the analyzers that I have sent
> the last time, since I had not stabilized yet the version on which I
> work.  If the new version shows compile time improvements, I will
> check it in.  The main improvement is a lazy evaluation of the scalar
> evolutions, but I'm not sure this will make the analyzer faster.
>
> I had a little problem during the creation of the sub-branch:
> following the instructions of cvswrite.html, I have created a branch
> of mainline called loop-nest-optimizer-branch instead of a branch of
> tree-ssa.  Is it possible to delete the loop-nest-optimizer-branch?

cvs tag -d
> 	PERIODIC_CHREC): New tree nodes.
> 	* varray.h (index_in_varray_tree, tree_is_in_varray_tree_p,
> 	index_in_varray_int, int_is_in_varray_int_p): New inlined functions.

BTW, I looked at your use of these in tree-*.c, and you'd be much 
better off just using bitmaps (IE bitmap_set_bit (array, (long) tree)).
varrays just aren't fast, and trying to inline these functions isn't 
going to make the O(n) operation faster.