Alina Sbirlea 2312a06c87 [SCEV] Add option to forget everything in SCEV. ... Summary: Create a method to forget everything in SCEV. Add a cl::opt and PassManagerBuilder option to use this in LoopUnroll. Motivation: Certain Halide applications spend a very long time compiling in forgetLoop, and prefer to forget everything and rebuild SCEV from scratch. Sample difference in compile time reduction: 21.04 to 14.78 using current ToT release build. Testcase showcasing this cannot be opensourced and is fairly large. The option disabled by default, but it may be desirable to enable by default. Evidence in favor (two difference runs on different days/ToT state): File Before (s) After (s) clang-9.bc 7267.91 6639.14 llvm-as.bc 194.12 194.12 llvm-dis.bc 62.50 62.50 opt.bc 1855.85 1857.53 File Before (s) After (s) clang-9.bc 8588.70 7812.83 llvm-as.bc 196.20 194.78 llvm-dis.bc 61.55 61.97 opt.bc 1739.78 1886.26 Reviewers: sanjoy Subscribers: mehdi_amini, jlebar, zzheng, javed.absar, dmgreen, jdoerfert, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D60144 llvm-svn: 358304		2019-04-12 19:16:07 +00:00
..
AlwaysInliner.cpp	Provide reason messages for unviable inlining	2019-02-01 10:44:43 +00:00
ArgumentPromotion.cpp	[ArgPromotion] Set debug location at updated callsites	2019-04-02 17:42:17 +00:00
BarrierNoopPass.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
BlockExtractor.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
CMakeLists.txt	Hot cold splitting pass	2018-09-07 15:03:49 +00:00
CalledValuePropagation.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ConstantMerge.cpp	[ConstantMerge] Factor out check for un-mergeable globals, NFC	2019-01-20 02:44:43 +00:00
CrossDSOCFI.cpp	[opaque pointer types] Add a FunctionCallee wrapper type, and use it.	2019-02-01 02:28:03 +00:00
DeadArgumentElimination.cpp	[opaque pointer types] Pass function types to CallInst creation.	2019-02-01 20:43:25 +00:00
ElimAvailExtern.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ExtractGV.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ForceFunctionAttrs.cpp	Revert "[Sanitizers] UBSan unreachable incompatible with ASan in the presence of `noreturn` calls"	2019-01-24 18:04:21 +00:00
FunctionAttrs.cpp	[IR] Refactor attribute methods in Function class (NFC)	2019-04-04 22:40:06 +00:00
FunctionImport.cpp	[ThinLTO] Restructure AliasSummary to contain ValueInfo of Aliasee	2019-03-15 15:11:38 +00:00
GlobalDCE.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
GlobalOpt.cpp	[GlobalOpt] Simplify __cxa_atexit elimination	2019-02-09 09:18:37 +00:00
GlobalSplit.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
HotColdSplitting.cpp	[IR] Refactor attribute methods in Function class (NFC)	2019-04-04 22:40:06 +00:00
IPConstantPropagation.cpp	[IPCP] Don't crash due to arg count/type mismatch between caller/callee	2019-01-29 10:19:44 +00:00
IPO.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
InferFunctionAttrs.cpp	[IR] Refactor attribute methods in Function class (NFC)	2019-04-04 22:40:06 +00:00
InlineSimple.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Inliner.cpp	[IR] Refactor attribute methods in Function class (NFC)	2019-04-04 22:40:06 +00:00
Internalize.cpp	[Internalize] Replace uses of std::set with DenseSet	2019-04-02 09:25:31 +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
LoopExtractor.cpp	[CodeExtractor] Update function's assumption cache after extracting blocks from it	2019-02-08 06:55:18 +00:00
LowerTypeTests.cpp	[ThinLTO] Detect partially split modules during the thin link	2019-02-14 21:22:50 +00:00
MergeFunctions.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
PartialInlining.cpp	[Inliner] Pass nullptr for the ORE param of getInlineCost if RemarkEnabled	2019-02-21 02:57:52 +00:00
PassManagerBuilder.cpp	[SCEV] Add option to forget everything in SCEV.	2019-04-12 19:16:07 +00:00
PruneEH.cpp	[PruneEH] Don't split musttail call from ret	2019-04-02 15:47:11 +00:00
SCCP.cpp	[IPSCCP,PM] Preserve PDT in the new pass manager.	2018-11-11 20:22:45 +00:00
SampleProfile.cpp	Change some dyn_cast to more apropriate isa. NFC	2019-04-05 16:16:23 +00:00
StripDeadPrototypes.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
StripSymbols.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
SyntheticCountsPropagation.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ThinLTOBitcodeWriter.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
WholeProgramDevirt.cpp	[ThinLTO] Detect partially split modules during the thin link	2019-02-14 21:22:50 +00:00