implementing escape analysis

Thu Feb 16 18:51:00 GMT 2006

Andrew Haley wrote:
> Per Bothner writes:
> > David Daney wrote:
> > > I keep threatening to do this for gcj, but was thinking that the best 
> > > place to do it may be the front end. Once in tree-ssa form it is more 
> > > difficult to figure out that a call to _Jv_AllocObject followed by a 
> > > call to the constructor is the equivalent of the 'new' operator.
> > 
> > Why is that relevant to escape analysis? A constructor is just
> > another method, in this context.
>> Indeed: the only thing that has to be recognized as "special" is a
> malloc-like function.
>
We in the java case...
An object allocated by _Jv_AllocObject can not be stack allocated as it 
has a finalizer, but one allocated with _Jv_AllocObjectNoFinalizer can 
be, so there has to be some differentiation between all these different 
cases.
David Daney.