hg: jdk/hs: 8199406: Performance drop with Java JDK 1.8.0_162-b32

[poonam.bajaj at oracle.com]

Changeset: d6893a76c554
Author:    poonam
Date:      2018-03-30 18:46 +0000
URL:       http://hg.openjdk.java.net/jdk/hs/rev/d6893a76c554

8199406: Performance drop with Java JDK 1.8.0_162-b32
Summary: Improve the nmethod unloading times by optimizing the search for an itable stub in VtableStubs array
Reviewed-by: kvn, coleenp, tschatzl

! src/hotspot/share/code/codeBlob.cpp
! src/hotspot/share/code/codeBlob.hpp
! src/hotspot/share/code/compiledIC.cpp
! src/hotspot/share/code/vtableStubs.cpp
! src/hotspot/share/code/vtableStubs.hpp
! src/hotspot/share/oops/compiledICHolder.cpp
! src/hotspot/share/oops/compiledICHolder.hpp