Chandler Carruth 0e35152dbe [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 llvm-svn: 292589		2017-01-20 08:42:19 +00:00
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CMakeLists.txt	[CMake] NFC. Updating CMake dependency specifications	2016-11-17 04:36:50 +00:00
LLVMBuild.txt
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