Commit 2d4f9ad8 authored by Ben Gamari's avatar Ben Gamari 🐢 Committed by Marge Bot

Ensure that coreView/tcView are able to inline

Previously an import cycle between Type and TyCoRep meant that several
functions in TyCoRep ended up SOURCE import coreView. This is quite
unfortunate as coreView is intended to be fused into a larger pattern
match and not incur an extra call.

Fix this with a bit of restructuring:

 * Move the functions in `TyCoRep` which depend upon things in `Type`
   into `Type`
 * Fold contents of `Kind` into `Type` and turn `Kind` into a simple
   wrapper re-exporting kind-ish things from `Type`
 * Clean up the redundant imports that popped up as a result

Closes #17441.

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