[PATCH] D123693: Transform illegal intrinsics to V_ILLEGAL

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D123693#3696493 <https://reviews.llvm.org/D123693#3696493>, @foad wrote:

> If target-cpu doesn't let you target different CPUs for different functions then I don't understand what it does.

For the relevant cases in the library, we key off the subtarget feature in target-features. The problem is in the final codegen we've propagated the real cpu to the leaf function, which then artificially has an incompatible target-features. We would have to have some code fixup the target-cpu to some random other device with compatible features


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  https://reviews.llvm.org/D123693/new/

https://reviews.llvm.org/D123693