> Hi, > > in propagate_constants_accross_call we expect a thunk to have at least > one parameter and thus an ipa-prop parameter descriptor. However, > when the callee comes from a CU that was compiled with -O0, there are > no parameter descriptors and we fail an index checking assert. > > This patch fixes it by bailing out early if there are no parameter > descriptors because in that case there is nothing to do in that > function anyway. Bootstrap and testing in progress, OK for trunk if > it passes? > > Thanks, > > Martin > > > 2014-02-21 Martin Jambor <mjam...@suse.cz> > > PR ipa/60266 > * ipa-cp.c (propagate_constants_accross_call): Bail out early if > there are no parameter descriptors.
Actually I have similar patch in my tree for few days since I hit the problem while building libreoffice. OK. Honza > > diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c > index 7d8bc05..4c9ab12 100644 > --- a/gcc/ipa-cp.c > +++ b/gcc/ipa-cp.c > @@ -1428,6 +1428,8 @@ propagate_constants_accross_call (struct cgraph_edge > *cs) > args = IPA_EDGE_REF (cs); > args_count = ipa_get_cs_argument_count (args); > parms_count = ipa_get_param_count (callee_info); > + if (parms_count == 0) > + return false; > > /* If this call goes through a thunk we must not propagate to the first > (0th) > parameter. However, we might need to uncover a thunk from below a > series
