CarolineConcatto 9256485043
[Clang][LLVM][AArch64]Add new feature SSVE-BitPerm (#121947)
The 20204-12 ISA update release adds a new feature: FEAT_SSVE_BitPerm,
which allows the sve-bitperm instructions to run in streaming mode.

It also removes the requirement of FEAT_SVE2 for FEAT_SVE_BitPerm. The
sve2-bitperm feature is now an alias for sve-bitperm and sve2.

A new feature flag sve-bitperm is added to reflect the change that the
instructions under FEAT_SVE_BitPerm are supported if:
 on non streaming mode with FEAT_SVE2 and FEAT_SVE_BitPerm or
 in streaming mode with FEAT_SME and FEAT_SSVE_BitPerm
2025-01-13 16:34:33 +00:00
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