[ast-optimizer-branch]: SAVE_EXPR's not simplified right

[Jason Merrill]

>>>>> "Mark" == Mark Mitchell <mark@codesourcery.com> writes:

> --On Monday, May 06, 2002 08:31:57 AM -0700 Zack Weinberg
> <zack@codesourcery.com> wrote:

>> Maybe it's time to get rid of SAVE_EXPR altogether?  Per Bothner had a
>> pretty detailed proposal for what to replace it with -- search the
>> mailing lists for LET_EXPR.

> That would be good.  I'd go even further; just create explicitly create
> temporaries in DECL_STMTs and use them.  It's not hard to keep track
> of the most recently opened scope so that you know where to put such
> statements.

Are you suggesting this at tree generation time, or as a post-processing
pass?  I would lean towards the latter.  We could also do something similar
for TARGET_EXPR.

Jason