6926048: Improve Zero performance
Summary: Make Zero figure out result types in a similar way to C++ interpreter implementation.
Reviewed-by: kvn
Contributed-by: gbenson@redhat.com
6925249: assert(last_sp < (intptr_t*) interpreter_frame_monitor_begin(),"bad tos")
Summary: Fix assert since top deoptimized frame has last_sp == interpreter_frame_monitor_begin if there are no expressions.
Reviewed-by: twisti
6924097: assert((_type == Type::MEMORY) == (_adr_type != 0),"adr_type for memory phis only")
Summary: Use PhiNode::make_blank(r, n) method to construct the phi.
Reviewed-by: never