[PATCH] D95373: Replace vector intrinsics with call to vector library

[Lukas Sommer via Phabricator via llvm-commits]

LukasSommerTu added a comment.

In D95373#2520302 <https://reviews.llvm.org/D95373#2520302>, @lebedev.ri wrote:

> What's the intended use-case of this pass?

Some frontends or in my case MLIR, generate calls to LLVM intrinsics operating on vector operands, e.g.:
`%call = call <4 x double> @llvm.exp.v4f64(<4 x double> %in)`

Those calls are currently not replaced with calls to vector libraries (e.g., libmvec, SVML), because this replacement only happens for scalar calls in the Loop-/SLP-vectorizer.

With the pass, it is now possible to replace the calls for improved performance, resulting in the following for SVML & the example above:
`%call = call <4 x double> @__svml_exp4(<4 x double> %in)`


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  https://reviews.llvm.org/D95373/new/

https://reviews.llvm.org/D95373