http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49519
--- Comment #29 from rguenther at suse dot de <rguenther at suse dot de> 2011-07-12 08:35:18 UTC --- On Tue, 12 Jul 2011, ian at airs dot com wrote: > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49519 > > Ian Lance Taylor <ian at airs dot com> changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > CC| |ian at airs dot com > > --- Comment #27 from Ian Lance Taylor <ian at airs dot com> 2011-07-12 > 04:37:01 UTC --- > This patch seems too conservative and it appears that it will cause the > compiler to miss all tailcalls with pointer arguments. It only matters if the > register points to the incoming parameters, which can only happen in unusual > cases. We should be able to determine that reliably. Janis, did you open a > PR > for the missing optimization? I didn't see one. The point is, of course, we have to determine it conservatively correct. The patch makes sure we do that. Richard.
