RFR(S): 8063086: Math.pow yields different results upon repeated calls

[Roland Westrelin]

> Looks good. Make sure to run new test with -Xcomp and -XX:-TieredCompilation and Client VM.

Thanks for the review. I checked the test runs fine in these cases.

Roland.

> 
> Thanks,
> Vladimir
> 
> On 1/5/15 8:38 AM, Roland Westrelin wrote:
>> http://cr.openjdk.java.net/~roland/8063086/webrev.00/
>> 
>> With 8029302, C2 computes x^2 as x*x. The interpreter and C1 code don’t have the special case code and as a result an application can see different result for the same computation whether it’s executed by the interpreter/c1 or c2. Fixed by adding the special case to the interpreter and C1.
>> 
>> Roland.
>>