[PATCH] D21374: [RFC] Generate long nop instructions depending on function-specific subtarget info

[Eric Christopher via llvm-commits]

No, that doesn't sound like a good idea. There should be done way of
representing this in assembly.

On Mon, Jul 4, 2016, 6:57 AM Andrey Turetskiy <andrey.turetskiy at gmail.com>
wrote:

> aturetsk added a comment.
>
> Can we use llvm.ident metadata which is stored and loaded from an assembly
> file to keep function-specific subtarget information across assembly?
> For example we could store
> "llvm/multiversioning/symbol_name/cpu_name/feature_bits_hex" string in
> ident metadata for functions which subtarget info differs from module's
> info in AsmPrinter::FinalizeMachineFunction.
>
>
> http://reviews.llvm.org/D21374
>
>
>
>
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