David Zarzycki f68925d450 [X86] Make memcmp vector lowering handle arbitrary expansions ...

Teach combineVectorSizedSetCCEquality() to handle arbitrary memcmp
expansions but do not change any default policy for now.

This also fixes a bug in the memcmp expansion itself when large
displacements are needed.

https://reviews.llvm.org/D69507

2019-10-30 09:12:57 +02:00

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