[PATCH] D141402: [AArch64] Support v8.9-A/v9.4-A in .arch_extension directive

[Lucas Prates via Phabricator via llvm-commits]

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This adds support for the v8.9-A/v9.4-A architectural extensions to be
used in .arch_extension assembly directives.

Patch by Sam Elliott.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141402

Files:
  llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
  llvm/test/MC/AArch64/directive-arch_extension-negative.s
  llvm/test/MC/AArch64/directive-arch_extension.s

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