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[LoopSimplifyCFG] Add missing MSSA edge deletion

Description

[LoopSimplifyCFG] Add missing MSSA edge deletion

When we create fictive switch in preheader, we should take
care about MSSA and delete edge between old preheader and
header.

Details

Committed
mkazantsevFeb 20 2019, 9:51 PM
Parents
rL354546: [NFC] Always initialize all members in ABIArgInfo
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