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Re: [ping][PATCH][1 of 2] Add value range info to SSA_NAME for zero sign extension elimination in RTL


On Wed, 18 Sep 2013, Richard Earnshaw wrote:

> On 16/09/13 15:13, Richard Biener wrote:
> > +void
> > +get_range_info (tree name, double_int &min, double_int &max,
> > +                enum value_range_type &range_type)
> > 
> > I'm not sure we want to use references.  Well - first time.
> 
> Personally, I don't think we should ever allow non-const references.
> Use of references means you can't tell from the source code that an
> argument to a function can be modified.  It leads to confusion and makes
> things harder to debug.

That's a good argument, so please make get_range_info take pointers
to min/max/range_type.

Richard.


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