[swift-evolution] Pitch: Cross-module inlining and specialization

Slava Pestov spestov at apple.com
Thu Oct 5 00:52:44 CDT 2017

> On Oct 4, 2017, at 9:40 PM, Taylor Swift via swift-evolution <swift-evolution at swift.org> wrote:
> i’m just tryna follow along here && this is probably a dumb question, but is it possible for a generic function to be emitted as a set of specialized functions into the client, but not inlined everywhere? It can be the case where a large generic function gets slowed down by the large number of generic operations inside it but it doesn’t make sense for it to be inlined completely.

This is already possible. The optimizer doesn’t have to inline an @_inlineable function at its call site; it can emit a call to a specialized version instead.

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