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Serguei Katkov 96f7f32d3a [SimpleLoopUnswitch] Don't consider unswitching switch insructions with one unique successor
Only instructions with two or more unique successors should be considered for unswitching.

Patch Author: Daniil Suchkov.

Reviewers: reames, asbirlea, skatkov
Reviewed By: skatkov
Subscribers: hiraditya, llvm-commits
Differential Revision: https://reviews.llvm.org/D64404

llvm-svn: 365611
2019-07-10 10:25:22 +00:00
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