RFR(S): 8241492: Strip mining not working for test/hotspot/jtreg/compiler/c2/Test6850611.java

[Robbin Ehn]

Thanks a lot for addressing this Roland!

(not a review)

/Robbin

On 2020-03-27 11:17, Roland Westrelin wrote:
> 
> https://bugs.openjdk.java.net/browse/JDK-8241492
> http://cr.openjdk.java.net/~roland/8241492/webrev.00/
> 
> The loop is strip mined but the computation of the inner loop number of
> iterations is wrong. It is the min of the number of iterations left and
> LoopStripMiningIter. In this case, the number of iterations left
> (guaranteed always positive) is greater than the max signed int but the
> min() that's used operates on signed ints so even though there's a large
> number of iterations left, the resulting number of iterations is not
> LoopStripMiningIter. Switching to a unsigned min() fixes this.
> 
> Roland.
>