[tree-ssa] Lowering of VLA's, part 2

[Jason Merrill]

On Wed, 27 Aug 2003 20:14:55 +0200, Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz> wrote:

> Hello,
>
>> > 	* gimplify.c (struct tree_p_list): New type.
>> > 	(join_tree_p_list, add_tree_p_list, free_tree_p_list,
>> > 	build_stack_save_restore, prepend_to_exit_gotos): New functions.
>> 
>> Use a TRY_FINALLY_EXPR instead.
>
> unnecesarily creating new eh handling constructs (that we really do not
> manage somehow greatly) seems a bit like overkill to me.

Reimplementing the functionality of TRY_FINALLY_EXPR by hand seems
unmaintainable to me.  If we want the stack to be restored properly when we
exit a block with a throw, we need to use an EH construct.

Also, rth is actively working on code to lower EH constructs after
gimplification, so our handling of EH will improve soon.

Jason