(0.46) x86-64: Use rep movs instructions if array copy size greater than 32 bytes - #209
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vijaysun-omr merged 1 commit intoJun 20, 2024
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âĶbytes This change applies to byte and char array System.arraycopy sequence. It avoids using vector instructions for copy size between 32 bytes to 64 bytes due to an observed regression. Signed-off-by: Annabelle Huo <Annabelle.Huo@ibm.com>
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This needs to wait until eclipse-omr/omr#7384 promotes and passes OMR acceptance. @pshipton : for awareness and concerns |
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There are some failures from the OMR acceptance build: https://openj9-jenkins.osuosl.org/job/Pipeline-OMR-Acceptance/707/, which look to me are known issues aarch64_linux jdk 11 sanity.openjdk: ppc64_aix jdk 17 sanity.openjdk:
s390x_linux jdk 17 sanity.openjdk:
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I already promoted the OMR acceptance build earlier today. |
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This PR ports eclipse-omr/omr#7384 to v0.46
This change applies to byte and char array System.arraycopy sequence. It avoids using vector instructions for copy size between 32 bytes to 64 bytes due to an observed regression.