git: openjdk/jdk: master: 8350468: x86: Improve implementation of vectorized numberOfLeadingZeros for int and long

[Jasmine Karthikeyan]

Changeset: f77a5117
Branch: master
Author:    Jasmine Karthikeyan <jkarthikeyan at openjdk.org>
Date:      2025-11-10 06:16:02 +0000
URL:       https://git.openjdk.org/jdk/commit/f77a5117db2d01a935762e948aef2d0ade3512a3

8350468: x86: Improve implementation of vectorized numberOfLeadingZeros for int and long

Co-authored-by: Raffaello Giulietti <rgiulietti at openjdk.org>
Reviewed-by: sviswanathan, qamai, vlivanov

! src/hotspot/cpu/x86/c2_MacroAssembler_x86.cpp
! test/hotspot/jtreg/compiler/vectorization/TestNumberOfContinuousZeros.java
+ test/micro/org/openjdk/bench/vm/compiler/LeadingZeros.java