RFR: 8233078 : fix minimal VM build on Linux ppc64(le)

[Baesken, Matthias]

Hello, please review the following fix .
I recently  experimented a bit with the  minimal  VM  build  on  linux x86_64    (--with-jvm-features=minimal --with-jvm-variants=minimal) .
This worked fine .

However  when I tried  the minimal vm build   on linux  ppc64 / ppc64le ,   I noticed that it fails  because of a few  wrong dependencies .
Thanks to Martin for the advice regarding

Register ic = as_Register(Matcher::inline_cache_reg_encode());

Replacement with


Register ic = R19_inline_cache_reg;

In http://cr.openjdk.java.net/~mbaesken/webrevs/8233078.0/src/hotspot/cpu/ppc/sharedRuntime_ppc.cpp.frames.html


Bug/webrev :

https://bugs.openjdk.java.net/browse/JDK-8233078
http://cr.openjdk.java.net/~mbaesken/webrevs/8233078.0/


Thanks, Matthias