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JIT: Enregister 32-byte and 64-byte sized structs in SIMD registers #88317

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jakobbotsch opened this issue Jul 3, 2023 · 1 comment
Open

JIT: Enregister 32-byte and 64-byte sized structs in SIMD registers #88317

jakobbotsch opened this issue Jul 3, 2023 · 1 comment
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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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Future

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@jakobbotsch
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We support enregistering 16-byte structs in 16-byte SIMD registers today. It should not be difficult to extend to 32-byte and 64-byte vector registers (start by modifying ClassLayout::GetRegisterType), though LSRA may need to be taught some new heuristics given these registers are more expensive to use around calls.
@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 3, 2023
@ghost ghost added the untriaged New issue has not been triaged by the area owner label Jul 3, 2023
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ghost commented Jul 3, 2023

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Issue Details

We support enregistering 16-byte structs in 16-byte SIMD registers today. It should not be difficult to extend to 32-byte and 64-byte vector registers (start by modifying ClassLayout::GetRegisterType), though LSRA may need to be taught some new heuristics given these registers are more expensive to use around calls.

Author: jakobbotsch
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area-CodeGen-coreclr
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@jakobbotsch jakobbotsch added this to the Future milestone Jul 3, 2023
@ghost ghost removed the untriaged New issue has not been triaged by the area owner label Jul 3, 2023
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