Re: question on points-to analysis

2010-09-11 Thread Amker.Cheng
> In theory, this is true, but a lot of the optimizations decrease > accuracy at a cost of making the problem solvable in a reasonable > amount of time. > By performing it after building initial points-to sets, the amount of > accuracy loss is incredibly small. > The only type of constraint that wi

Re: question on points-to analysis

2010-09-11 Thread Daniel Berlin
On Thu, Sep 9, 2010 at 7:24 AM, Richard Guenther wrote: > On Thu, Sep 9, 2010 at 1:19 PM, Amker.Cheng wrote: >> Hi, >> I am studying gcc's points-to analysis right now and encountered a question. >> In paper "Off-line Variable Substitution for Scaling Points-to >> Analysis", section 3.2 >> It says

Re: question on points-to analysis

2010-09-09 Thread Richard Guenther
On Thu, Sep 9, 2010 at 1:19 PM, Amker.Cheng wrote: > Hi, > I am studying gcc's points-to analysis right now and encountered a question. > In paper "Off-line Variable Substitution for Scaling Points-to > Analysis", section 3.2 > It says that we should not substitute a variable with other if it is >

question on points-to analysis

2010-09-09 Thread Amker.Cheng
Hi, I am studying gcc's points-to analysis right now and encountered a question. In paper "Off-line Variable Substitution for Scaling Points-to Analysis", section 3.2 It says that we should not substitute a variable with other if it is taken address. But in GCC's implementation, it units pointer but