RFR (XS): rev3 8152856: Xcode 7.3 -Wshift-negative-value compile failure on Mac OS X

[Gerard Ziemski]

PING

Can I please have a review of this small fix? I have removed makefile change, which is no longer needed, so this should be non-controversial to review:

bug:    https://bugs.openjdk.java.net/browse/JDK-8152856
webrev:	http://cr.openjdk.java.net/~gziemski/8152856_rev3


cheers

> On Apr 6, 2016, at 11:35 AM, Gerard Ziemski <gerard.ziemski at oracle.com> wrote:
> 
> hi all,
> 
> I have implemented and tested out the new proposed fix using constant instead of casts. Please review this new fix:
> 
> bug:		https://bugs.openjdk.java.net/browse/JDK-8152856
> webrev:	http://cr.openjdk.java.net/~gziemski/8152856_rev2
> 
> Passes JPRT hotspot and RBT hotspot/test/:hotspot_runtime
> 
> 
> cheers
> 
>> On Mar 31, 2016, at 9:08 AM, Gerard Ziemski <gerard.ziemski at oracle.com> wrote:
>> 
>> hi all,
>> 
>> Since no-one has reviewed this yet and in the meantime we changed https://wiki.openjdk.java.net/display/HotSpot/StyleGuide to discourage using enums in hotspot (see JDK-8153116 for more details) I’m going to withdraw this proposed fix and try doing it by replacing enums with constant literals instead of using casts on enums.
>> 
>> I therefore withdraw this fix for now.
>> 
>> 
>> cheers
>> 
>>> On Mar 29, 2016, at 4:30 PM, Gerard Ziemski <gerard.ziemski at oracle.com> wrote:
>>> 
>>> hi all,
>>> 
>>> Please review this small fix that enables Xcde 7.3 support for building hotspot, which involved 2 things:
>>> 
>>> - modify gcc.make to add support for 7.3 version of clang compiler
>>> - modify src/cpu/x86/vm/stubGenerator_x86_64.cpp, src/share/vm/oops/klass.hpp and src/share/vm/opto/library_call.cpp to cast 4 instances of signed int to unsigned when using shift operator to avoid "-Wshift-negative-value" warning.
>>> 
>>> https://bugs.openjdk.java.net/browse/JDK-8152856
>>> http://cr.openjdk.java.net/~gziemski/8152856_rev1
>>> 
>>> Passes JPRT hotspot on all platforms
>>> 
>> 
>