hg: jdk10/hs/hotspot: 8175096: Analyse subword in the loop to set maximum vector size

[vladimir.kozlov at oracle.com]

Changeset: a361c7f25575
Author:    vdeshpande
Date:      2017-07-19 08:29 -0700
URL:       http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/a361c7f25575

8175096: Analyse subword in the loop to set maximum vector size
Reviewed-by: kvn

! src/share/vm/opto/c2_globals.hpp
! src/share/vm/opto/loopTransform.cpp
! src/share/vm/opto/superword.cpp