Chandler Carruth 017c62c41d [PM] Port LoopSink to the new pass manager. ... Like several other loop passes (the vectorizer, etc) this pass doesn't really fit the model of a loop pass. The critical distinction is that it isn't intended to be pipelined together with other loop passes. I plan to add some documentation to the loop pass manager to make this more clear on that side. LoopSink is also different because it doesn't really need a lot of the infrastructure of our loop passes. For example, if there aren't loop invariant instructions causing a preheader to exist, there is no need to form a preheader. It also doesn't need LCSSA because this pass is only involved in sinking invariant instructions from a preheader into the loop, not reasoning about live-outs. This allows some nice simplifications to the pass in the new PM where we can directly walk the loops once without restructuring them. Differential Revision: https://reviews.llvm.org/D28921 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292589 91177308-0d34-0410-b5e6-96231b3b80d8		2017-01-20 08:42:19 +00:00
..
CMakeLists.txt	[CMake] NFC. Updating CMake dependency specifications	2016-11-17 04:36:50 +00:00
LLVMBuild.txt	Add missing dependency to LLVMPasses	2016-06-24 21:05:41 +00:00
PassBuilder.cpp	[PM] Port LoopSink to the new pass manager.	2017-01-20 08:42:19 +00:00
PassRegistry.def	[PM] Port LoopSink to the new pass manager.	2017-01-20 08:42:19 +00:00