[clang] [Clang][AArch64] Add support for SHF_AARCH64_PURECODE ELF section flag (2/3) (PR #125688)

[Csanád Hajdú via cfe-commits]

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+// RUN: %clang --sysroot=%S/Inputs -c -fdriver-only -Werror --target=aarch64-unknown-linux-gnu \
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Il-Capitano wrote:

There must have been a good reason I removed the `!ForMultilib` check, but I can't remember now...

You're right, the check is needed for bare metal targets. As is, the test would pass with `--target=aarch64-none-elf`, but that's because there's no `sysroot/aarch64-none-elf/multilib.yaml` file found. However I was able to test for this by passing the `--multi-lib-config=%S/Inputs/multilib/empty.yaml` flag.

https://github.com/llvm/llvm-project/pull/125688