8154135: Loop alignment may be added inside the loop body Reviewed-by: kvn, vlivanov

8153357: C2 creates incorrect cast after eliminating phi with unique input Summary: Refine C2's logic to determine the type of cast node added. Reviewed-by: kvn

8072428: Enable UseLoopCounter ergonomically if on-stack-replacement is enabled Summary: Set UseLoopCounter ergonomically if on-stack-replacement is enabled. Print warning. Reviewed-by: kvn