Wei Mi 81f98562a0 [SampleFDO] Minimize performance impact when profile-sample-accurate ... is enabled. We can save memory and reduce binary size significantly by enabling ProfileSampleAccurate. However when ProfileSampleAccurate is true, function without sample will be regarded as cold and this could potentially cause performance regression. To minimize the potential negative performance impact, we want to be a little conservative here saying if a function shows up in the profile, no matter as outline instance, inline instance or call targets, treat the function as not being cold. This will handle the cases such as most callsites of a function are inlined in sampled binary (thus outline copy don't get any sample) but not inlined in current build (because of source code drift, imprecise debug information, or the callsites are all cold individually but not cold accumulatively...), so that the outline function showing up as cold in sampled binary will actually not be cold after current build. After the change, such function will be treated as not cold even profile-sample-accurate is enabled. At the same time we lower the hot criteria of callsiteIsHot check when profile-sample-accurate is enabled. callsiteIsHot is used to determined whether a callsite is hot and qualified for early inlining. When profile-sample-accurate is enabled, functions without profile will be regarded as cold and much less inlining will happen in CGSCC inlining pass, so we can worry less about size increase and be aggressive to allow more early inlining to happen for warm callsites and it is helpful for performance overall. Differential Revision: https://reviews.llvm.org/D67561 llvm-svn: 372232		2019-09-18 16:06:28 +00:00
..
AlwaysInliner.cpp
ArgumentPromotion.cpp
Attributor.cpp	Hide implementation details in namespaces.	2019-09-17 12:56:29 +00:00
BarrierNoopPass.cpp
BlockExtractor.cpp	[BlockExtractor] Avoid assert with wrong line format	2019-08-20 14:46:02 +00:00
CalledValuePropagation.cpp
CMakeLists.txt
ConstantMerge.cpp	IR. Change strip* family of functions to not look through aliases.	2019-08-22 19:56:14 +00:00
CrossDSOCFI.cpp	cfi-icall: Allow the jump table to be optionally made non-canonical.	2019-08-09 22:31:59 +00:00
DeadArgumentElimination.cpp
ElimAvailExtern.cpp
ExtractGV.cpp
ForceFunctionAttrs.cpp	ARM MTE stack sanitizer.	2019-07-15 20:02:23 +00:00
FunctionAttrs.cpp	LLVM: Optimization Pass: Remove conflicting attribute, if any, before	2019-09-11 14:26:22 +00:00
FunctionImport.cpp	[ThinLTO] Fix handling of weak interposable symbols	2019-08-23 15:18:58 +00:00
GlobalDCE.cpp
GlobalOpt.cpp	Change TargetLibraryInfo analysis passes to always require Function	2019-09-07 03:09:36 +00:00
GlobalSplit.cpp
HotColdSplitting.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
InferFunctionAttrs.cpp	Change TargetLibraryInfo analysis passes to always require Function	2019-09-07 03:09:36 +00:00
Inliner.cpp	Change TargetLibraryInfo analysis passes to always require Function	2019-09-07 03:09:36 +00:00
InlineSimple.cpp
Internalize.cpp
IPConstantPropagation.cpp
IPO.cpp	[LLVM-C] Improve Bindings to The Internalize Pass	2019-07-23 04:56:44 +00:00
LLVMBuild.txt
LoopExtractor.cpp
LowerTypeTests.cpp	cfi-icall: Allow the jump table to be optionally made non-canonical.	2019-08-09 22:31:59 +00:00
MergeFunctions.cpp
PartialInlining.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
PassManagerBuilder.cpp	Revert "Reland "r364412 [ExpandMemCmp][MergeICmps] Move passes out of CodeGen into opt pipeline.""	2019-09-10 10:39:09 +00:00
PruneEH.cpp
SampleProfile.cpp	[SampleFDO] Minimize performance impact when profile-sample-accurate	2019-09-18 16:06:28 +00:00
SCCP.cpp	Change TargetLibraryInfo analysis passes to always require Function	2019-09-07 03:09:36 +00:00
StripDeadPrototypes.cpp
StripSymbols.cpp
SyntheticCountsPropagation.cpp
ThinLTOBitcodeWriter.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
WholeProgramDevirt.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00