On Wed, Feb 07, 2018 at 08:06:53AM +0100, Richard Biener wrote:
> >Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
>
> OK.
Committed, thanks.
> I wonder why we have to re-implement all this in DOM. there's enough of
> match and simplify interfaces to make it use that?
It would certainly be nicer to be able to just use match.pd here.
I guess the intent is only do it if it folds into a constant. While we
could use a valueize hook that would return the same SSA_NAME for both
values, wonder if gimplify-match.c has some API to create stmts in a
sequence only instead of replacing the stmt(s) in the IL that we could use,
test if it is a constant and use it, otherwise throw away.
Jakub
