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Author SHA1 Message Date
Alina Sbirlea a496143c9e Update MemorySSA in LoopUnswitch. 
Summary:
Update MemorySSA in old LoopUnswitch pass.
Actual dependency and update is disabled by default.

Subscribers: sanjoy, jlebar, Prazek, llvm-commits

Differential Revision: https://reviews.llvm.org/D45301

llvm-svn: 341984
 2018-09-11 19:19:21 +00:00
Andrew Trick 4442bfe559 Fix 12513: Loop unrolling breaks with indirect branches. 
Take this opportunity to generalize the indirectbr bailout logic for
loop transformations. CFG transformations will never get indirectbr
right, and there's no point trying.

llvm-svn: 154386
 2012-04-10 05:14:42 +00:00
Stepan Dyatkovskiy f62ffeca88 Fast fix for PR12343: 
http://llvm.org/bugs/show_bug.cgi?id=12343

We have not trivial way for splitting edges that are goes from indirect branch. We can do it with some tricks, but it should be additionally discussed. And it is still dangerous due to difficulty of indirect branches controlling.

Fix forbids this case for unswitching.

llvm-svn: 153879
 2012-04-02 17:16:45 +00:00