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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
Adam Nemet
bd861acf29 [LLE] Don't hoist conditionally executed loads 
If the load is conditional we can't hoist its 0-iteration instance to
the preheader because that would make it unconditional.  Thus we would
access a memory location that the original loop did not access.

llvm-svn: 273991
 2016-06-28 04:02:47 +00:00