On Thu, Apr 13, 2006 at 01:29:13PM +0200, Paolo Bonzini wrote:
>
> What combine is doing is to expand compound operations such as
> zero_extract, simplifying them, and try to make new compound operations.
> Therefore you should first try to understand what's causing combine to
> miss the simpl
I think it is simply because combine.c doesn't have any code to simplify this kind of expression.
In theory it should have...
However, if you add these simplifications to simplify-rtx.c, it will
be picked up by combine.
There is a lot of simplification code in combine.c too. Should I
On Thu, 13 Apr 2006 13:29:13 +0200, Paolo Bonzini wrote
> > Also, is there a function for simplifying a zero_extract?
>
> What combine is doing is to expand compound operations such as
> zero_extract, simplifying them, and try to make new compound
> operations. Therefore you should first try t
Also, is there a function for simplifying a zero_extract?
What combine is doing is to expand compound operations such as
zero_extract, simplifying them, and try to make new compound operations.
Therefore you should first try to understand what's causing combine to
miss the simplification.
