RFR: 8214205: PPC64: Add instructions for counting trailing zeros
22 Nov
2018
22 Nov
'18
6:40 a.m.
Dear all, Would you please review the following change that enables POWER9’s instructions for counting trailing zeros? Bug: https://bugs.openjdk.java.net/browse/JDK-8214205 Webrev: http://cr.openjdk.java.net/~mhorie/8214205/webrev.00/ Simple micro benchmark attached showed improvements by around 30%. (See attached file: CNTTZTest.java) Currently, Gustavo@IBM can test POWER9 specific changes. (Thanks Gustavo!) Best regards, -- Michihiro, IBM Research - Tokyo
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Michihiro Horie