hg: jdk9/hs-comp/hotspot: 8139421: PPC64LE: MacroAssembler::bxx64_patchable kill register R12

[goetz.lindenmaier at sap.com]

Changeset: c6a1e7983723
Author:    mdoerr
Date:      2015-10-12 12:20 +0200
URL:       http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/c6a1e7983723

8139421: PPC64LE: MacroAssembler::bxx64_patchable kill register R12
Summary: Register R12 must be preserved for stub calls (e.g. deopt handler).
Reviewed-by: goetz

! src/cpu/ppc/vm/macroAssembler_ppc.cpp