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JIT: support strength reducing multiple IVs with different step values provided they have a gcd > 1 #105241

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jakobbotsch opened this issue Jul 22, 2024 · 2 comments
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JIT: support strength reducing multiple IVs with different step values provided they have a gcd > 1 #105241

jakobbotsch opened this issue Jul 22, 2024 · 2 comments
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area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI
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10.0.0

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Strength reduction should still be profitable in these cases.

Suggested by @AndyAyersMS here: #104243 (comment)
@dotnet-issue-labeler dotnet-issue-labeler bot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jul 22, 2024
@jakobbotsch jakobbotsch self-assigned this Jul 22, 2024
@jakobbotsch jakobbotsch added this to the 10.0.0 milestone Jul 22, 2024
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Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
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One interesting canonical loop shape we can target is the one in #102068 (comment).

@jakobbotsch jakobbotsch mentioned this issue Jul 22, 2024
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@jakobbotsch jakobbotsch changed the title JIT: support strength reducing multiple IVs different step values provided they have a gcd > 1 JIT: support strength reducing multiple IVs with different step values provided they have a gcd > 1 Jul 22, 2024
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