hg: jdk10/hs/hotspot: 8179305: Avoid repeated calls to JavaThread::last_frame in InterpreterRuntime

[ioi.lam at oracle.com]

Changeset: 601d8c7ab6f6
Author:    iklam
Date:      2017-05-01 11:16 -0700
URL:       http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/601d8c7ab6f6

8179305: Avoid repeated calls to JavaThread::last_frame in InterpreterRuntime
Summary: Added LastFrameAccessor class
Reviewed-by: dlong, dholmes

! src/share/vm/interpreter/interpreterRuntime.cpp
! src/share/vm/interpreter/interpreterRuntime.hpp