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[SLPVectorizer][SVE] Skip scalable-vector instructions before…

Authored by huihuiz on Sep 15 2020, 1:09 PM.

Description

[SLPVectorizer][SVE] Skip scalable-vector instructions before vectorizeSimpleInstructions.

For scalable type, the aggregated size is unknown at compile-time.
Skip instructions with scalable type to ensure the list of instructions
for vectorizeSimpleInstructions does not contains any scalable-vector instructions.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D87550

Details