[PATCH] Shrink tree_block

[Andrew Pinski]

On 11/24/07, Richard Guenther <rguenther@suse.de> wrote:
> This shrinks tree_block by noting that with mapped location the
> block locus now pairs with the flags.  Also blocks do not need
> a type and access to the chain member of tree_common is conveniently
> wrapped with BLOCK_CHAIN.
>
> So, bootstrapped and tested on x86_64-unknown-linux-gnu, I'll apply
> this as a memory-savings regression fix later.

This is not complete, you need to have BLOCK return true for GIMPLE_TUPLE_P.

And you should have GENERIC_NEXT for BLOCKs return BLOCK_CHAIN.

Thanks,
Andrew Pinski