Request for reviews (S): 6997311: SIGFPE in new long division asm code

[Vladimir Kozlov]

Thank you, Tom

Vladimir

Tom Rodriguez wrote:
> I think I follow the new code and it looks ok.  One typo:  Fallthrow -> fallthrough.
> 
> tom
> 
> On Nov 4, 2010, at 10:42 AM, Vladimir Kozlov wrote:
> 
>> http://cr.openjdk.java.net/~kvn/6997311/webrev.00
>>
>> Fixed 6997311: SIGFPE in new long division asm code
>>
>> Regression after changes added for 6987135.
>> IDIV instruction throws SIGFPE if sign of result
>> does not fit into 32 bit. I have to use unsigned
>> DIV instruction and convert negative dividend
>> to positive and result back. So more code.
>>
>> Added missing cast to long in 6603011/Test.java
>> which prevented me to catch this situation during
>> work on 6987135. Added additional verification
>> output for failure (the same as for int testing).
>>
>> Tested with failed Nightly tests and fixed 6603011/Test.
>>
>