RFR: 8199685: Access arraycopy build failure with GCC 7.3.1

[Erik Österlund]

Hi Per,

Thanks for the review.

/Erik

On 2018-03-15 15:25, Per Liden wrote:
> Looks good!
>
> /Per
>
> On 03/15/2018 02:06 PM, Erik Österlund wrote:
>> Hi,
>>
>> Newer compilers are not happy with arraycopy since recent changes 
>> made RawAccessBarrier accept 5 arguments instead of 3, and there was 
>> an unused path in Access for HeapWord* arraycopy, that was not 
>> expanded, that still tried to call an internal arraycopy function 
>> with 3 arguments.
>>
>> The problematic unexpanded overload in RawAccessBarrier for HeapWord* 
>> addresses has been removed. Instead, the HeapWord logic for 
>> performing Raw oop arraycopy when it is not known whether compressed 
>> oops is used or not has been moved to an earlier stage (reduce_types) 
>> to better reflect how this logic is consistently handled for the 
>> other accessors with the same HeapWord* logic, to make the code more 
>> symmetric.
>>
>> Bug:
>> https://bugs.openjdk.java.net/browse/JDK-8199685
>>
>> Webrev:
>> http://cr.openjdk.java.net/~eosterlund/8199685/webrev.00/
>>
>> Thanks,
>> /Erik