hg: jdk9/hs-comp/hotspot: 8135231: aarch64: add support for vectorizing double precision sqrt

[roland.westrelin at oracle.com]

Changeset: fa430fa4f577
Author:    enevill
Date:      2015-09-23 12:39 -0400
URL:       http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/fa430fa4f577

8135231: aarch64: add support for vectorizing double precision sqrt
Reviewed-by: roland, aph

! src/cpu/aarch64/vm/aarch64.ad
! src/cpu/aarch64/vm/assembler_aarch64.hpp
! test/compiler/loopopts/superword/SumRedSqrt_Double.java