[SLPVectorizer] Set flag to previous default.

Authored by asbirlea on May 23 2019, 12:07 PM.


[SLPVectorizer] Set flag to previous default.

The refactoring in r360276 moved the RunSLPVectorization flag and added the default explicitly. The default should have been false, as before.

The new pass manager used to have SLPVectorization on by default, now it's off in opt, and needs D61617 checked in to enable it in clang.

Reviewers: chandlerc

Subscribers: mehdi_amini, jlebar, eraman, steven_wu, dexonsmith, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D61955

llvm-svn: 361537