git: openjdk/jdk24u: master: 8349637: Integer.numberOfLeadingZeros outputs incorrectly in certain cases

[Tobias Hartmann]

Changeset: 0ceff4ba
Branch: master
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2025-03-10 16:06:49 +0000
URL:       https://git.openjdk.org/jdk24u/commit/0ceff4ba5f2fa0eb17b5a77188c2eaf9ce4dfe66

8349637: Integer.numberOfLeadingZeros outputs incorrectly in certain cases

Backport-of: 3657e92ead1e678942fcb272e77c3867eb5aa13e

! src/hotspot/cpu/x86/c2_MacroAssembler_x86.cpp
! test/hotspot/jtreg/compiler/vectorization/TestNumberOfContinuousZeros.java
+ test/hotspot/jtreg/compiler/vectorization/TestVectorZeroCount.java