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4 Commits

Author SHA1 Message Date
Eric Christopher 598198edbc Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358552 91177308-0d34-0410-b5e6-96231b3b80d8
 2019-04-17 04:52:47 +00:00
Eric Christopher 02cc44c1b9 Temporarily Revert "Add basic loop fusion pass." 
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358546 91177308-0d34-0410-b5e6-96231b3b80d8
 2019-04-17 02:12:23 +00:00
Alina Sbirlea 86e199d8d6 Update MemorySSA in LoopRotate. 
Summary:
Teach LoopRotate to preserve MemorySSA.
Enable tests for correctness, dependency disabled by default.

Subscribers: sanjoy, jlebar, Prazek, george.burgess.iv, llvm-commits

Differential Revision: https://reviews.llvm.org/D51718

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@345216 91177308-0d34-0410-b5e6-96231b3b80d8
 2018-10-24 22:46:45 +00:00
David Green a9bfe02006 [LoopRotate] Rotate loops with loop exiting latches 
If a loop has a loop exiting latch, it can be profitable
to rotate the loop if it leads to the simplification of
a phi node. Perform rotation in these cases even if loop
rotate itself didnt simplify the loop to get there.

Differential Revision: https://reviews.llvm.org/D44199



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@328933 91177308-0d34-0410-b5e6-96231b3b80d8
 2018-04-01 12:48:24 +00:00