JIT, SIMD Intrinsics: Recognize `~A & B` as `VectorXxx.AndNot(B, A)`

[sunkin351]

I love the new SIMD intrinsic surface area you guys have released with .NET 7, and would like to propose this improvement to JIT pattern recognition.

Although micro-benchmarks don't reveal any performance improvement on my CPU to use the AndNot() intrinsic over ~A & B, it does to my knowledge result in 1 or more fewer instructions and thus benefits code size.

For reference, my CPU is a Ryzen 2700.

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Issue Details

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I love the new SIMD intrinsic surface area you guys have released with .NET 7, and would like to propose this improvement to JIT pattern recognition.

Although micro-benchmarks don't reveal any performance improvement on my CPU to use the AndNot() intrinsic over ~A & B, it does to my knowledge result in 1 or more fewer instructions and thus benefits code size.

For reference, my CPU is a Ryzen 2700.

Author:	sunkin351
Assignees:	-
Labels:	area-CodeGen-coreclr
Milestone:	-

[SingleAccretion]

A good place for this reduction would be in morph, fgOptimizeHWIntrinsic.