[PATCH] D123693: Transform illegal intrinsics to V_ILLEGAL

[Leon Clark via Phabricator via llvm-commits]

Leonc added a comment.

In D123693#3580902 <https://reviews.llvm.org/D123693#3580902>, @foad wrote:

>> The issue is our libraries contain code for all targets. We rely on dead code elimination to remove illegal intrinsics, but that doesn't happen on -O0.
>
> Why can't you put the code for different subtargets in different functions, each with an appropriate `"target-cpu"=` attribute?

That's what I would do. I think there's some resistance to it though, and it would probably require a lot more work.


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https://reviews.llvm.org/D123693