Speeding up copy_memory stub

[Aleksey Shipilev]

On 11/8/22 17:10, Vladimir Kempik wrote:
>> Any help on catching these bugs is highly appreciated.

Try to pass this:

$ make test TEST=hotspot_compiler_arraycopy

I added those to extensively cover the arraycopy improvements work for x86_64.

If RISC-V arraycopy code has any option flags, feel free to add them to test matrix here:
 
https://github.com/openjdk/jdk/blob/dd5d4df5b68a40923987841a206fac5032d72f71/test/hotspot/jtreg/compiler/arraycopy/stress/TestStressArrayCopy.java#L152

-- 
Thanks,
-Aleksey