RFR: 8343699: [aarch64] Bug in MacroAssembler::klass_decode_mode() [v2]

[Alan Bateman]

On Thu, 5 Dec 2024 14:07:00 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> Thank you for figuring this out.  I'll merge with your code in my PR.
>
> Thanks @coleenp and @adinn !

@tstuefe We have a build break on both linux-aarch64 and macosx-aarch64. Local example, with Xcode14.3.1+1.0

/XXX/src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp:5308:46: error: use of undeclared identifier 'ceil_log2'
    const uint64_t range_mask = right_n_bits(ceil_log2(range));

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PR Comment: https://git.openjdk.org/jdk/pull/21932#issuecomment-2520535272