[PATCH] D50179: [AArch64][ARM] Context sensitive meaning of option "crypto"

[Sjoerd Meijer via Phabricator via cfe-commits]

SjoerdMeijer created this revision.
SjoerdMeijer added reviewers: olista01, samparker, john.brawn, ab, t.p.northover.
Herald added a reviewer: javed.absar.
Herald added subscribers: chrib, kristof.beyls.

For AArch64:

1. Crypto means sm4 + sha3 + sha2 + aes for Armv8.4-A and up,
2. and sha2 + aes for Armv8.3-A and earlier.

And for AArch32:
Crypto means sha2 + aes, because the Armv8.2-A crypto instructions
were added to AArch64 only.


https://reviews.llvm.org/D50179

Files:
  lib/Driver/ToolChains/Arch/AArch64.cpp
  lib/Driver/ToolChains/Arch/ARM.cpp
  test/Driver/arm-features.c
  test/Preprocessor/aarch64-target-features.c

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