hg: jdk/submit: 8240772: x86_64: Pre-generate Assembler::popa, pusha and vzeroupper

[claes.redestad at oracle.com]

Changeset: 4923c49ba7b5
Author:    redestad
Date:      2020-03-12 13:07 +0100
URL:       https://hg.openjdk.java.net/jdk/submit/rev/4923c49ba7b5

8240772: x86_64: Pre-generate Assembler::popa, pusha and vzeroupper
Reviewed-by: iklam, kvn

! src/hotspot/cpu/x86/assembler_x86.cpp
! src/hotspot/cpu/x86/assembler_x86.hpp
! src/hotspot/cpu/x86/vm_version_x86.cpp