Hello, Issue: https://bugs.openjdk.java.net/browse/JDK-8029501 Webrev: http://cr.openjdk.java.net/~bpb/8029501/webrev/
This patch would change the division algorithm selection heuristic as previously described in [1]. Many subsequent performance benchmark runs have determined that the threshold offset should be 40 if the division threshold itself is 80 [2]. With the existing algorithm selection heuristic, i.e., dividend and divisor int-length both above the tB-Z threshold, performance regressions of up to 100% will be observed when the int-lengths of the dividend and divisor exceed the B-Z threshold but the dividend int-length is less than approximately 40 more than the divisor int-length. The proposed patch fixes that problem. Thanks, Brian [1] http://mail.openjdk.java.net/pipermail/core-libs-dev/2013-November/023493.html [2] http://mail.openjdk.java.net/pipermail/core-libs-dev/2013-December/023668.html
