Summary: Fix loop's probability. Add optimizations to avoid spilling. Change InlineSmallCode to product flag.
Reviewed-by: never

Summary: Add asserts with dead loop checks in AddNode::Ideal().
Reviewed-by: never

Summary: Set offset to OffsetBot when the add overflows in TypePtr::add_offset()
Reviewed-by: jrose, never

Summary: fixed few addP node type and narrow oop type problems.
Reviewed-by: rasbold, never

Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell

Reviewed-by: kvn, jrose

Summary: set_req_X() puts dependent nodes on IGVN worklist which allows to improve graph and gives more opportunities for EA scalar replacement.
Reviewed-by: jrose, never

Reviewed-by: kvn, rasbold