hg: jdk/sandbox: 8233364: Fix undefined behavior in Canonicalizer::do_ShiftOp

[chris.hegarty at oracle.com]

Changeset: 291775bcf35d
Author:    kbarrett
Date:      2019-11-07 16:22 -0500
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/291775bcf35d

8233364: Fix undefined behavior in Canonicalizer::do_ShiftOp
Summary: Add java_shift_xxx helpers and use them.
Reviewed-by: aph, kvn

! src/hotspot/share/c1/c1_Canonicalizer.cpp
! src/hotspot/share/utilities/globalDefinitions.hpp
+ test/hotspot/gtest/utilities/test_java_arithmetic.cpp