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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
Daniel Sanders ef8761fd3b Fix non-determinism in Reassociate caused by address coincidences 
Summary:
Between building the pair map and querying it there are a few places that
erase and create Values. It's rare but the address of these newly created
Values is occasionally the same as a just-erased Value that we already
have in the pair map. These coincidences should be accounted for to avoid
non-determinism.

Thanks to Roman Tereshin for the test case.

Reviewers: rtereshin, bogner

Reviewed By: rtereshin

Subscribers: mgrang, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59401

llvm-svn: 356803
 2019-03-22 20:16:35 +00:00