Florian Hahn 189efe295b Recommit "[GVN] Preserve loop related analysis/canonical forms."
This fixes some pipeline tests.
This reverts commit d0b6f42936bfb6d56d325c732ae79400c9c6016a.

llvm-svn: 367401
2019-07-31 09:27:54 +00:00
..
2019-05-18 14:36:06 +00:00