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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+39
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-39/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* [InstCombine] Simplify selects that test cmpxchg instructionsMatthew Simpson2017-10-311-0/+39
If a select instruction tests the returned flag of a cmpxchg instruction and selects between the returned value of the cmpxchg instruction and its compare operand, the result of the select will always be equal to its false value. Differential Revision: https://reviews.llvm.org/D39383 llvm-svn: 316994
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