hg: jdk/sandbox: 8235288: AVX 512 instructions inadvertently used on Xeon for small vector width operations

[chris.hegarty at oracle.com]

Changeset: 666fa504b60c
Author:    sviswanathan
Date:      2019-12-04 14:55 -0800
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/666fa504b60c

8235288: AVX 512 instructions inadvertently used on Xeon for small vector width operations
Reviewed-by: kvn, vlivanov

! src/hotspot/cpu/x86/macroAssembler_x86.hpp