[PATCH] D141411: [AArch64] Make -march and target("arch=..") attributes imply dependent features

[Sam Elliott via Phabricator via cfe-commits]

lenary added a comment.

Can we check this logic, especially around adding both AEK_SVE and AEK_SVE2 in the `AARCH64_ARCH` descriptions, this means that `-march=armv9-a+nosve2` still can generate sve instructions. I'm not entirely sure of the intended behaviour there, especially as sve2 should maybe imply sve by other means (iirc, there's a place higher up in AArch64TargetParser.def with the implied features?)


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D141411/new/

https://reviews.llvm.org/D141411