jdk

4b463ee7 - 8342103: C2 compiler support for Float16 type and associated scalar operations

8342103: C2 compiler support for Float16 type and associated scalar operations Co-authored-by: Paul Sandoz <psandoz@openjdk.org> Co-authored-by: Bhavana Kilambi <bkilambi@openjdk.org> Co-authored-by: Joe Darcy <darcy@openjdk.org> Co-authored-by: Raffaello Giulietti <rgiulietti@openjdk.org> Reviewed-by: psandoz, epeter, sviswanathan