[mono] Unaligned read/write only when NO_UNALIGNED_ACCESS is set #91813
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ghost
assigned 
filipnavara
reviewed
Sep 8, 2023
matouskozak
changed the title
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/azp run runtime-extra-platforms |
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Azure Pipelines successfully started running 1 pipeline(s). |
matouskozak
requested review from
vargaz,
lambdageek and
SamMonoRT
as code owners
This was referenced Sep 22, 2023
matouskozak
changed the title
6 tasks
vargaz
approved these changes
Sep 25, 2023
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What change caused the regression ? |
It was introduced in #89364 by changing |
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The failures seem unrelated, and all can be found on main (e.g. bbe5c66) |
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Using unaligned read code path only when
NO_UNALIGNED_ACCESSis set. Otherwise emit regular memory load (EMIT_NEW_LOAD_MEMBASE_TYPE) without usingmemcpy.Edit: Increased the scope of the change to both load/store operations. When CPU supports unaligned memory access (
NO_UNALIGNED_ACCESSis not set) we let CPU handle the unaligned load/store operation rather than handling it ourselves.Locally confirmed that it fixes
Perf_Matrix3x2.CreateRotation*benchmarks (#91361)