Add `cf` ("control-flow") module and split `cfg` into `cf::unstructured` vs `cf::structurize`.#26

Draft

eddyb wants to merge 3 commits intoRust-GPU:mainfrom

Commits on Sep 11, 2025

spv/lift: elide empty targets of an `if`-`else`/`switch`, as allowed by SPIR-V.
eddyb
committed

Commits on Sep 12, 2025

Split a new `mem` module (for "memory" ops/passes/etc.), out of `qptr`.
eddyb
committed
Add `cf` ("control-flow") module and split `cfg` into `cf::unstructured` vs `cf::structurize`.
eddyb
committed