hg: jdk/jdk: 8221092: UseAVX=3 has performance degredation on Skylake (X7) processors

[vivek.r.deshpande at intel.com]

Changeset: c6f1226cfb72
Author:    vdeshpande
Date:      2019-10-04 11:45 -0700
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/c6f1226cfb72

8221092: UseAVX=3 has performance degredation on Skylake (X7) processors
Summary: Fix for UseAVX=3 has performance degredation on Skylake (X7) processors
Reviewed-by: kvn

! src/hotspot/cpu/x86/globals_x86.hpp
! src/hotspot/cpu/x86/macroAssembler_x86.cpp
! src/hotspot/cpu/x86/stubGenerator_x86_64.cpp
! src/hotspot/cpu/x86/vm_version_x86.cpp
! src/hotspot/cpu/x86/vm_version_x86.hpp
! src/hotspot/cpu/x86/x86.ad