Alina Sbirlea 7425179fee [LoopPassManager + MemorySSA] Only enable use of MemorySSA for LPMs known to preserve it. ... Summary: Add a flag to the FunctionToLoopAdaptor that allows enabling MemorySSA only for the loop pass managers that are known to preserve it. If an LPM is known to have only loop transforms that *all* preserve MemorySSA, then use MemorySSA if `EnableMSSALoopDependency` is set. If an LPM has loop passes that do not preserve MemorySSA, then the flag passed is `false`, regardless of the value of `EnableMSSALoopDependency`. When using a custom loop pass pipeline via `passes=...`, use keyword `loop` vs `loop-mssa` to use MemorySSA in that LPM. If a loop that does not preserve MemorySSA is added while using the `loop-mssa` keyword, that's an error. Add the new `loop-mssa` keyword to a few tests where a difference occurs when enabling MemorySSA. Reviewers: chandlerc Subscribers: mehdi_amini, Prazek, george.burgess.iv, sanjoy.google, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D66376 llvm-svn: 369548		2019-08-21 17:00:57 +00:00
..
CMakeLists.txt	[New PM][PassInstrumentation] IR printing support for New Pass Manager	2018-09-24 16:08:15 +00:00
LLVMBuild.txt	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
PassBuilder.cpp	[LoopPassManager + MemorySSA] Only enable use of MemorySSA for LPMs known to preserve it.	2019-08-21 17:00:57 +00:00
PassPlugin.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
PassRegistry.def	Title: Loop Cache Analysis	2019-08-09 13:56:29 +00:00
StandardInstrumentations.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00