http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54398
--- Comment #7 from ramrad01 at arm dot com 2012-09-11 10:44:30 UTC --- On 09/11/12 07:09, jakub at gcc dot gnu.org wrote: > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54398 > > Jakub Jelinek <jakub at gcc dot gnu.org> changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > CC| |jakub at gcc dot gnu.org > > --- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-09-11 > 06:09:13 UTC --- > cselib.c has for this the various spots that special case > HARD_FRAME_POINTER_REGNUM (or STACK_POINTER_REGNUM or FRAME_POINTER_REGNUM). > Please see why that doesn't work in this case. > This rings a bell. Maybe the patch mentioned below needs backporting given Carrot is reporting this against the 4.6 branch. What's not clear if this is reproducible on anything later though. http://old.nabble.com/-PATCH--Prevent-cselib-substitution-of-FP,-SP,-SFP-td33080657.html Full disclaimer that I've not investigated whether the same problem occurs on trunk. HTH, Ramana
