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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
Zinovy Nis 07ac2bd4d0 [PATCH] Force LoopReroll to reset the loop trip count value after reroll. 
It's a bug fix. 
For rerolled loops SE trip count remains unchanged. It leads to incorrect work of the next passes.
My patch just resets SE info for rerolled loop forcing SE to re-evaluate it next time it requested.
I also added a verifier call in the exisitng test to be sure no invalid SE data remain. Without my fix this test would fail with -verify-scev.

Differential Revision: http://reviews.llvm.org/D18316

llvm-svn: 264051
 2016-03-22 13:50:57 +00:00
Elena Demikhovsky 9914dbd11b Allow setting MaxRerollIterations above 16 
By Ayal Zaks.

Differential Revision http://reviews.llvm.org/D17258

llvm-svn: 261517
 2016-02-22 09:38:28 +00:00