------- Comment #14 from rearnsha at gcc dot gnu dot org 2009-11-16 17:35 ------- This is probably a consequence of some changes made to support Thumb-2. Only a very limited number of instructions are permitted to modify SP there, and co-processor operations are not amongst them.
I think the correct way to solve this is to add a secondary reload pattern that handles moving co-processor regs to STACK_REGS (and vice-versa). -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40836
