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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
Mikael Holmen 2ca16899ec Require DominatorTree when requiring/preserving LoopInfo in the old pass manager 
Summary:
Require DominatorTree when requiring/preserving LoopInfo in the old pass manager

BreakCriticalEdges tries to keep LoopInfo and DominatorTree updated if they
exist. However, since commit r321653 and r321805, to update LoopInfo we
must have a DominatorTree, or we will hit an assert.

To fix this we now make a couple of passes that only required/preserved
LoopInfo also require DominatorTree.

This solves PR37334.

Reviewers: eli.friedman, efriedma

Reviewed By: efriedma

Subscribers: efriedma, llvm-commits

Differential Revision: https://reviews.llvm.org/D46829

llvm-svn: 332583
 2018-05-17 09:05:40 +00:00