[9] RFR(XS): 8176513 Poor code quality for ByteBuffers

[Vladimir Ivanov]

Good point, Roland. Missed those checks.

What is missing is TypeInstPtr::MARK, but I'm fine with fixing that later.

Best regards,
Vladimir Ivanov

On 3/15/17 6:34 PM, Roland Westrelin wrote:
>
>> I think alias_type->adr_type() should be used instead, because
>> adr_type->isa_aryptr() is true for pointers into array header as well,
>> but we care about array body here. Alias analysis should flatten them to
>> InstPtr.
>
> Aren't those forbidden anyway?
>
>   if (alias_type->adr_type() == TypeInstPtr::KLASS ||
>       alias_type->adr_type() == TypeAryPtr::RANGE) {
>     return false; // not supported
>   }
>
> Roland.
>