Michael Kruse 1aad76c18f [CodeGen] Add invalidation of the loop SCEVs after merge block generation. ...

The SCEVs of loops surrounding the escape users of a merge blocks are
forgotten, so that loop trip counts based on old values can be revoked.

This fixes llvm.org//PR32536

Contributed-by: Baranidharan Mohan <mbdharan@gmail.com>

Differential Revision: https://reviews.llvm.org/D33195

llvm-svn: 303561

2017-05-22 15:36:53 +00:00

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