[LAA] Add tests for a set of miscompiles. (NFC) (#230773)
Add tests for the following issues:
* interleaved-accesses-retry-runtime-checks.ll: when LAA retries with
runtime checks, the store of an interleave group is moved past a load
from the same address.
* is-safe-dep-distance-narrow-btc.ll: accesses with a real backward
dependence are reported as safe if the byte stride does not fit in a
narrow backedge-taken count type or MaxBTC * MaxStride wraps in it.
* is-safe-dep-distance-partial-overlap.ll: accesses are reported as
independent if |Dist| > MaxBTC * MaxStride, even if the distance is not
a multiple of the access size and the accesses partially overlap.
* different-access-types-rt-checks.ll: the runtime check bounds of a
pointer loaded as i32 and stored as i8 only account for the i8 store, so
the tail of the loaded range is not checked.
* runtime-check-grouping-wrapping-bounds.ll: pointers whose bounds can
wrap relative to each other are grouped, so the group's Low can be above
its High and the runtime checks never detect a conflict.
