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arm64: Refactor mov/movprfx for unmasked operations #123717

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arm64: Refactor mov/movprfx for unmasked operations #123717

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@ylpoonlg ylpoonlg commented Jan 28, 2026

This PR is the first of a few contributing to #115508.

  • Apply the proposed changes to the codegen and emit functions for the non-embedded masked operations, which only concern cases using unpredicated mov/movprfx.
  • Clean up RMW instructions codegen in hwintrinsiccodegenarm64.cpp.
  • Add a helper emit function to handle SVE mov/movprfx checks.
  • Move the special codegen for AddCarryWideningEven/Odd into the emit function.

cc @dotnet/arm64-contrib @a74nh

@ylpoonlg
Refactor SVE MOVPRFX for unmasked operations
b75b90e 
* Move MOVPRFX logic from codegen to emit.
@github-actions github-actions bot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jan 28, 2026
@dotnet-policy-service dotnet-policy-service bot added the community-contribution Indicates that the PR has been added by a community member label Jan 28, 2026
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dotnet-policy-service bot commented Jan 28, 2026

Tagging subscribers to this area: @JulieLeeMSFT, @dotnet/jit-contrib
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This was referenced Jan 28, 2026
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