hg: jdk7/hotspot-comp/hotspot: 6695049: (coll) Create an x86 intrinsic for Arrays.equals

[Chuck Rasbold]

Volker -

Honestly, no.

However, this change paves the way for some companion changes, not yet 
in the JDK libraries, that should deliver a benchmark boost.

-- Chuck

Volker Simonis wrote:
> Hi Chuck,
> 
> could you observe any measurable performance improvements in any of
> the standard benchmarks (like JVM98, DaCapo, JBB...) with this change?
> 
> Regards,
> Volker
> 
> On 5/30/08, chuck.rasbold at sun.com <chuck.rasbold at sun.com> wrote:
>> Changeset: 9148c65abefc
>>  Author:    rasbold
>>  Date:      2008-05-29 16:22 -0700
>>  URL:       http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/9148c65abefc
>>
>>  6695049: (coll) Create an x86 intrinsic for Arrays.equals
>>  Summary: Intrinsify java/util/Arrays.equals(char[], char[])
>>  Reviewed-by: kvn, never
>>
>>  ! src/cpu/x86/vm/x86_32.ad
>>  ! src/cpu/x86/vm/x86_64.ad
>>  ! src/share/vm/classfile/vmSymbols.hpp
>>  ! src/share/vm/opto/classes.hpp
>>  ! src/share/vm/opto/lcm.cpp
>>  ! src/share/vm/opto/library_call.cpp
>>  ! src/share/vm/opto/loopnode.cpp
>>  ! src/share/vm/opto/matcher.cpp
>>  ! src/share/vm/opto/memnode.cpp
>>  ! src/share/vm/opto/memnode.hpp
>>  ! src/share/vm/runtime/arguments.cpp
>>  ! src/share/vm/runtime/globals.hpp
>>
>>