hg: jdk/submit14: 8235762: JVM crash in SWPointer during C2 compilation

[tobias.hartmann at oracle.com]

Changeset: d19d1a02d1b2
Author:    fyang
Date:      2020-01-09 19:12 +0800
URL:       https://hg.openjdk.java.net/jdk/submit14/rev/d19d1a02d1b2

8235762: JVM crash in SWPointer during C2 compilation
Reviewed-by: thartmann, chagedorn, neliasso

! src/hotspot/share/opto/superword.cpp
! src/hotspot/share/opto/superword.hpp
+ test/hotspot/jtreg/compiler/loopopts/superword/TestSearchAlignment.java