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Author SHA1 Message Date
Eric Christopher cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
 2019-04-17 04:52:47 +00:00
Eric Christopher a863435128 Temporarily Revert "Add basic loop fusion pass." 
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
 2019-04-17 02:12:23 +00:00
Jun Bum Lim dfbe6fa832 [LICM] Preserve DT and LoopInfo specifically 
Summary:
In LICM, CFG could be changed in splitPredecessorsOfLoopExit(), which update
only DT and LoopInfo. Therefore, we should preserve only DT and LoopInfo specifically,
instead of all analyses that depend on the CFG (setPreservesCFG()).

This change should fix PR37323.

Reviewers: uabelho, davide, dberlin, Ka-Ka

Reviewed By: dberlin

Subscribers: mzolotukhin, bjope, mcrosier, llvm-commits

Differential Revision: https://reviews.llvm.org/D46775

llvm-svn: 333198
 2018-05-24 15:58:34 +00:00