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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
Davide Italiano cc7257c200 [LoopUnroll] Fix a test. REQUIRE should be REQUIRES. 
Found by inspection.

llvm-svn: 302909
 2017-05-12 15:30:58 +00:00
Davide Italiano 0f62eea7ff [LoopUnroll] Don't try to unroll non canonical loops. 
The current Loop Unroll implementation works with loops having a
single latch that contains a conditional branch to a block outside
the loop (the other successor is, by defition of latch, the header).
If this precondition doesn't hold, avoid unrolling the loop as
the code is not ready to handle such circumstances.

Differential Revision:  https://reviews.llvm.org/D32261

llvm-svn: 301239
 2017-04-24 20:14:11 +00:00