Integrated: 8282221: x86 intrinsics for divideUnsigned and remainderUnsigned methods in java.lang.Integer and java.lang.Long

[Srinivas Vamsi Parasa]

On Tue, 22 Feb 2022 09:24:47 GMT, Srinivas Vamsi Parasa <duke at openjdk.java.net> wrote:

> Optimizes the divideUnsigned() and remainderUnsigned() methods in java.lang.Integer and java.lang.Long classes using x86 intrinsics. This change shows 3x improvement for Integer methods and upto 25% improvement for Long. This change also implements the DivMod optimization which fuses division and modulus operations if needed. The DivMod optimization shows 3x improvement for Integer and ~65% improvement for Long.

This pull request has now been integrated.

Changeset: 37e28aea
Author:    vamsi-parasa <srinivas.vamsi.parasa at intel.com>
Committer: Jatin Bhateja <jbhateja at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/37e28aea27c8d8336ddecde777e63b51a939d281
Stats:     1156 lines in 20 files changed: 1154 ins; 1 del; 1 mod

8282221: x86 intrinsics for divideUnsigned and remainderUnsigned methods in java.lang.Integer and java.lang.Long

Reviewed-by: sviswanathan, kvn, jbhateja

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PR: https://git.openjdk.java.net/jdk/pull/7572