Adding the 2-parameter xplat shuffle helpers and accelerating them

[tannergooding]

This adds the 2 parameter shuffle APIs of the form Vector128<T> Shuffle(Vector128<T> value, Vector128<TInteger> indices) and provides basic acceleration for these on x86, x64, and Arm64.

This doesn't provide acceleration for non-constants or for cross-lane operations on Vector256<T> x86/x64 since that requires additional complexity that would delay the baseline support.

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Longer term, we'll want to introduce a GenTreeVecCon (to parity GenTreeDblCon and GenTreeIntCon) and accelerate these additional scenarios.

Additionally we'll want to expose the 3 parameter shuffle APIs of the form Vector128<T> Shuffle(Vector128<T> lower, Vector128<T> upper, Vector128<TInteger> indices), which will come in a follow up PR.

[dotnet-issue-labeler]

Note regarding the new-api-needs-documentation label:

This serves as a reminder for when your PR is modifying a ref *.cs file and adding/modifying public APIs, to please make sure the API implementation in the src *.cs file is documented with triple slash comments, so the PR reviewers can sign off that change.

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Issue Details

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This adds the 2 parameter shuffle APIs of the form Vector128<T> Shuffle(Vector128<T> value, Vector128<TInteger> indices) and provides basic acceleration for these on x86, x64, and Arm64.

This doesn't provide acceleration for non-constants or for cross-lane operations on Vector256<T> x86/x64 since that requires additional complexity that would delay the baseline support.

Author:	tannergooding
Assignees:	-
Labels:	area-CodeGen-coreclr, new-api-needs-documentation
Milestone:	-

[tannergooding]

This is part, but not all, of the remaining work on #63331 which is important to get in for the .NET 7 Arm64 work.

[tannergooding]

/azp run runtime-coreclr jitstress-isas-x86, runtime-coreclr jitstress-isas-arm, runtime-coreclr outerloop

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[tannergooding]

/azp run runtime-coreclr jitstress-isas-x86, runtime-coreclr jitstress-isas-arm, runtime-coreclr outerloop

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[tannergooding]

/azp run runtime-coreclr jitstress-isas-x86, runtime-coreclr jitstress-isas-arm, runtime-coreclr outerloop

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[tannergooding]

This is ready for review. Failures are unrelated to this PR, but I'll log issues for the ones that are obvious actual problems.

[tannergooding]

CC. @dotnet/jit-contrib

[jakobbotsch]

Have you tested the case where op1 is something complex so that fgMakeMultiUse needs to create a temp?
I think you need to change fgMakeMultiUse to accept a CORINFO_CLASS_HANDLE that it can pass along to fgInsertCommaFormTemp.

[tannergooding]

I see. I'll update to allow passing that down and will add another test that explicitly covers this.

[jakobbotsch]

I'm not very familiar with these intrinsics, but given the extensive tests this LGTM