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ARM64: Redundant movs can be eliminiated #35252

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#38179
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ARM64: Redundant movs can be eliminiated#35252
#38179
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arch-arm64area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMIoptimization
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Future

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@kunalspathak
kunalspathak
opened on Apr 21, 2020

I have seen below pattern in generated code for framework libraries. We can eliminate 2nd move.

       AA0003F8          mov     x24, x0
       AA1803E0          mov     x0, x24

There are approx. 27K such patterns in 16K methods. Details in redundant-mov-2.txt.

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  1. kunalspathak
    added
    arch-arm64
    area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI
    on Apr 21, 2020
  2. Dotnet-GitSync-Bot
    added
    untriagedNew issue has not been triaged by the area owner
    on Apr 21, 2020
  3. BruceForstall
    added this to the Future milestone on Apr 21, 2020
  4. BruceForstall
    added
    optimization
    and removed
    untriagedNew issue has not been triaged by the area owner
    on Apr 21, 2020
  5. kunalspathak
    closed this as completedin #38179on Jun 30, 2020
  6. ghost locked as resolved and limited conversation to collaborators on Dec 9, 2020
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