6964776: c2 should ensure the polling page is reachable on 64 bit Summary: Materialize the pointer to the polling page in a register instead of using rip-relative addressing when the distance from the code cache is larger than disp32. Reviewed-by: never, kvn

7024475: loop doesn't terminate when compiled Reviewed-by: kvn

Merge

7029017: Additional architecture support for c2 compiler Summary: Enables cross building of a c2 VM. Support masking of shift counts when the processor architecture mandates it. Reviewed-by: kvn, never