Add support for Sve.ReverseBits()

[SwapnilGaikwad]

Contribute towards #99957.

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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, 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.

[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, 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.

[SwapnilGaikwad]

@a74nh @kunalspathak @dotnet/arm64-contrib @arch-arm64-sve

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[SwapnilGaikwad]

Stress tests are clean.

Test details

===================Running default===================
------------------- {} -------------------
Passed test: _Sve_ro::JIT.HardwareIntrinsics.Arm._Sve.Program.Sve_ReverseBits_byte() : 16
Passed test: _Sve_ro::JIT.HardwareIntrinsics.Arm._Sve.Program.Sve_ReverseBits_short() : 16
Passed test: _Sve_ro::JIT.HardwareIntrinsics.Arm._Sve.Program.Sve_ReverseBits_int() : 16
Passed test: _Sve_ro::JIT.HardwareIntrinsics.Arm._Sve.Program.Sve_ReverseBits_long() : 16
Passed test: _Sve_ro::JIT.HardwareIntrinsics.Arm._Sve.Program.Sve_ReverseBits_sbyte() : 16
Passed test: _Sve_ro::JIT.HardwareIntrinsics.Arm._Sve.Program.Sve_ReverseBits_ushort() : 16
Passed test: _Sve_ro::JIT.HardwareIntrinsics.Arm._Sve.Program.Sve_ReverseBits_uint() : 16
Passed test: _Sve_ro::JIT.HardwareIntrinsics.Arm._Sve.Program.Sve_ReverseBits_ulong() : 16
===================Running jitstress===================
------------------- {'JitMinOpts': '1'} -------------------
------------------- {'JitStress': '1'} -------------------
------------------- {'JitStress': '2'} -------------------
------------------- {'JitStress': '1', 'TieredCompilation': '1'} -------------------
------------------- {'JitStress': '2', 'TieredCompilation': '1'} -------------------
------------------- {'TailcallStress': '1'} -------------------
------------------- {'ReadyToRun': '0'} -------------------
===================Running jitstressregs===================
------------------- {'JitStressRegs': '1'} -------------------
------------------- {'JitStressRegs': '2'} -------------------
------------------- {'JitStressRegs': '3'} -------------------
------------------- {'JitStressRegs': '4'} -------------------
------------------- {'JitStressRegs': '8'} -------------------
------------------- {'JitStressRegs': '0x10'} -------------------
------------------- {'JitStressRegs': '0x80'} -------------------
------------------- {'JitStressRegs': '0x1000'} -------------------
------------------- {'JitStressRegs': '0x2000'} -------------------
===================Running jitstress2-jitstressregs===================
------------------- {'JitStress': '2', 'JitStressRegs': '1'} -------------------
------------------- {'JitStress': '2', 'JitStressRegs': '2'} -------------------
------------------- {'JitStress': '2', 'JitStressRegs': '3'} -------------------
------------------- {'JitStress': '2', 'JitStressRegs': '4'} -------------------
------------------- {'JitStress': '2', 'JitStressRegs': '8'} -------------------
------------------- {'JitStress': '2', 'JitStressRegs': '0x10'} -------------------
------------------- {'JitStress': '2', 'JitStressRegs': '0x80'} -------------------
------------------- {'JitStress': '2', 'JitStressRegs': '0x1000'} -------------------
------------------- {'JitStress': '2', 'JitStressRegs': '0x2000'} -------------------

[kunalspathak]

LGTM. Thanks!

[kunalspathak]

/ba-g opened #103823