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CpuMath Enhancement: Make bound checking of loops in hardware intrinsics more efficient #835
Description
Style changes needed to solve part of #823
Details
- In
src\Microsoft.ML.CpuMath\SseIntrinsics.csandsrc\Microsoft.ML.CpuMath\AvxIntrinsics.cs, changingwhile (pDstCurrent + 4 <= pDstEnd)for the loop bound checking intowhile (pDstCurrent <= pDstEnd - 4)to save an instruction (ref: Port all active C# hardware intrinsics APIs for SSE from SIMD native algorithms #668 (comment)) - It may probably be a CoreCLR issue
Activity
[-]Make bound checking of loops in hardware intrinsics more efficient[/-][+]CpuMath Enhancement: Make bound checking of loops in hardware intrinsics more efficient[/+]danmoseley commentedon Sep 6, 2018
As well as doing this, we should make sure there's a code gen issue open.
rosebyte commentedon Sep 3, 2026
Could you provide evidence how much performance we get by the optimisation?
dotnet-policy-service commentedon Sep 3, 2026
This issue has been marked
needs-author-actionand may be missing some important information.dotnet-policy-service commentedon Oct 5, 2026
This issue has been automatically marked
no-recent-activitybecause it has not had any activity for 14 days. It will be closed if no further activity occurs within 14 more days. Any new comment (by anyone, not necessarily the author) will removeno-recent-activity.dotnet-policy-service commentedon Oct 19, 2026
This issue will now be closed since it had been marked
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