------- Comment #5 from rearnsha at gcc dot gnu dot org 2009-12-22 11:16 ------- IMO this is a generic bug in the scheduler. The code in sched-deps.c should note that STACK_POINTER_RTX is being changed and insert a memory barrier that prevents migration of stack-related memory accesses across the change.
Of course, determining what memory accesses are stack-related is quite hard, and it may be that all memory accesses in the same address space as the stack will need to be restricted. -- rearnsha at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Component|target |rtl-optimization Last reconfirmed|2009-03-17 00:03:45 |2009-12-22 11:16:40 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38644