On Thu, Apr 3, 2014 at 12:40 PM, Balajiganapathi S <bal...@cse.iitb.ac.in> wrote: > Hi, > > We are doing a project which requires us to write a new pass to recalculate > the chain of recurrences and use them. We would like to do this as an ipa > pass plugin. For now we have got it working as a GIMPLE pass. When we try to > change it to an IPA pass, it gives seg fault. We believe it is because some > of the data structures are not populated (i.e. they are populated later). > So, we plan to recalculate all the data required to recompute the chrecs. > So, how do we go about finding which passes populate the required data > structures? As there are a large number of GIMPLE passes before our pass, it > would be impractical to recreate all of them. Is there any other way?
You probably simply miss to call scev_initialize()? > More details: > Our gimple pass is just after pass vectorize (we just copied the code in > vectorize_loops). > We want the IPA pass after pass pta. after pass_ipa_pta I suppose? > Related discussion http://gcc.gnu.org/ml/gcc/2014-01/msg00165.html > > Thanks, > Balajiganapathi S
