Ayal Zaks 7bf299c8d8 [LV] Vectorize without versioning-for-unit-stride under -Os/-Oz ...

If a loop is in a function marked OptSize, Loop Access Analysis should refrain
from generating runtime checks for unit strides that will version the loop.

If a loop is in a function marked OptSize and its vectorization is enabled, it
should be vectorized w/o any versioning.

Fixes PR46228.

Differential Revision: https://reviews.llvm.org/D81345

2020-07-07 15:04:21 +03:00

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