release/19.x: [AArch64][SME] Rewrite __arm_sc_memset to remove invalid instruction (#101522) #101938
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@kmclaughlin-arm What do you think about merging this PR to the release branch? |
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I think this should be merged into the release branch as the __arm_sc_memset routine it fixes cannot be run in streaming-mode without this change. |
kmclaughlin-arm
approved these changes
Aug 5, 2024
…lvm#101522) The implementation of __arm_sc_memset in compiler-rt contains a Neon dup instruction which is not valid in streaming mode. This patch rewrites the function, using an SVE mov instruction if available. (cherry picked from commit d6649f2)
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@kmclaughlin-arm (or anyone else). If you would like to add a note about this fix in the release notes (completely optional). Please reply to this comment with a one or two sentence description of the fix. When you are done, please add the release:note label to this PR. |
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Backport d6649f2
Requested by: @kmclaughlin-arm