Re: [VRP][PATCH] Improve value range for loop index

2014-04-25 Thread Richard Biener
On Fri, Apr 25, 2014 at 9:13 AM, Kugan wrote: > > > On 24/04/14 23:05, Richard Biener wrote: >> On Wed, Apr 9, 2014 at 10:07 PM, Kugan >> wrote: >>> Value range propagation simplifies convergence in vrp_visit_phi_node by >>> setting minimum to TYPE_MIN when the computed minimum is smaller than >>

Re: [VRP][PATCH] Improve value range for loop index

2014-04-25 Thread Kugan
On 24/04/14 23:05, Richard Biener wrote: > On Wed, Apr 9, 2014 at 10:07 PM, Kugan > wrote: >> Value range propagation simplifies convergence in vrp_visit_phi_node by >> setting minimum to TYPE_MIN when the computed minimum is smaller than >> the previous minimum. This can however result in pessi

Re: [VRP][PATCH] Improve value range for loop index

2014-04-24 Thread Richard Biener
On Wed, Apr 9, 2014 at 10:07 PM, Kugan wrote: > Value range propagation simplifies convergence in vrp_visit_phi_node by > setting minimum to TYPE_MIN when the computed minimum is smaller than > the previous minimum. This can however result in pessimistic value > ranges in some cases. > > for examp

Re: [VRP][PATCH] Improve value range for loop index

2014-04-18 Thread Kugan
Ping? On 10/04/14 06:07, Kugan wrote: > Value range propagation simplifies convergence in vrp_visit_phi_node by > setting minimum to TYPE_MIN when the computed minimum is smaller than > the previous minimum. This can however result in pessimistic value > ranges in some cases. > > for example, >