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llvm-project/llvm/lib/Transforms/IPO
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Roman Lebedev 03bd5198b6
[OldPM] Pass manager: run SROA after (simple) loop unrolling 
I have stumbled into this pretty accidentally, when rewriting
some spaghetti-like code into something more structured,
which involved using some `std::array<>`s. And to my surprise,
the `alloca`s remained, causing about `+160%` perf regression.

https://llvm-compile-time-tracker.com/compare.php?from=bb6f4d32aac3eecb51909f4facc625219307ee68&to=d563e66f40f9d4d145cb2050e41cb961e2b37785&stat=instructions
suggests that this has geomean compile-time cost of `+0.08%`.

Note that D68593 / cecc0d27ad58c0aed8ef9ed99bbf691e137a0f26
already did this chage for NewPM, but left OldPM in a pessimized state.

This fixes [[ https://bugs.llvm.org/show_bug.cgi?id=40011 | PR40011 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=42794 | PR42794 ]] and probably some other reports.

Reviewed By: nikic, xbolva00

Differential Revision: https://reviews.llvm.org/D87972
2020-10-04 11:53:50 +03:00
..
AlwaysInliner.cpp
Reland [AlwaysInliner] Update BFI when inlining
2020-10-02 10:46:57 -07:00
ArgumentPromotion.cpp
[ArgumentPromotion]: Copy function metadata after promoting arguments
2020-09-10 13:08:57 -04:00
Attributor.cpp
[Attributor] Cleanup IRPosition::getArgNo usages
2020-09-09 00:52:17 -05:00
AttributorAttributes.cpp
[LVI] Require context instruction in external API (NFCI)
2020-09-27 18:07:24 +02:00
BarrierNoopPass.cpp
Sink all InitializePasses.h includes
2019-11-13 16:34:37 -08:00
BlockExtractor.cpp
Make llvm::StringRef to std::string conversions explicit.
2020-01-28 23:25:25 +01:00
CalledValuePropagation.cpp
[IR] Replace all uses of CallBase::getCalledValue() with getCalledOperand().
2020-04-27 22:17:03 -07:00
CMakeLists.txt
Recommit "[IPConstProp] Remove and move tests to SCCP."
2020-08-02 22:23:54 +01:00
ConstantMerge.cpp
[Alignment][NFC] migrate DataLayout::getPreferredAlignment
2020-06-29 11:24:36 +00:00
CrossDSOCFI.cpp
Sink all InitializePasses.h includes
2019-11-13 16:34:37 -08:00
DeadArgumentElimination.cpp
[DAE] MarkLive in MarkValue(MaybeLive) if any use is live
2020-10-02 10:55:08 -07:00
ElimAvailExtern.cpp
Sink all InitializePasses.h includes
2019-11-13 16:34:37 -08:00
ExtractGV.cpp
[llvm-extract] Add -keep-const-init commandline option
2020-02-03 14:30:28 +09:00
ForceFunctionAttrs.cpp
Force Remove Attribute
2020-08-19 17:30:13 -04:00
FunctionAttrs.cpp
[FunctionAttrs] Inline setDoesNotRecurse() and delete it. NFC
2020-09-19 22:24:52 -07:00
FunctionImport.cpp
Fix some clang-tidy bugprone-argument-comment issues
2020-09-19 20:41:25 -07:00
GlobalDCE.cpp
[WPD/VFE] Always emit vcall_visibility metadata for -fwhole-program-vtables
2020-01-23 11:36:01 -08:00
GlobalOpt.cpp
[GlobalOpt] Fix an incorrect Modified status
2020-09-02 15:00:45 +02:00
GlobalSplit.cpp
[WPD/VFE] Always emit vcall_visibility metadata for -fwhole-program-vtables
2020-01-23 11:36:01 -08:00
HotColdSplitting.cpp
[HotColdSplit] Fix variable name spelling
2020-08-12 22:50:08 -07:00
InferFunctionAttrs.cpp
Sink all InitializePasses.h includes
2019-11-13 16:34:37 -08:00
Inliner.cpp
[Inliner] Don't skip inlining alwaysinline in optnone functions
2020-07-07 12:54:55 -07:00
InlineSimple.cpp
Revert "Revert "[llvm][NFC] Cleanup uses of std::function in Inlining-related APIs""
2020-05-15 12:29:16 -07:00
Internalize.cpp
Sink all InitializePasses.h includes
2019-11-13 16:34:37 -08:00
IPO.cpp
Recommit "[IPConstProp] Remove and move tests to SCCP."
2020-08-02 22:23:54 +01:00
LLVMBuild.txt
[OpenMP] Introduce the OpenMPOpt transformation pass
2020-02-08 14:47:03 -06:00
LoopExtractor.cpp
Fix pass return status for loop extractor
2020-06-26 15:49:27 +02:00
LowerTypeTests.cpp
[AArch64] Add BTI to CFI jumptables.
2020-09-29 13:50:23 +02:00
MergeFunctions.cpp
[llvm][NFC][CallSite] Remove CallSite from a few trivial locations
2020-04-22 08:39:21 -07:00
OpenMPOpt.cpp
[OpenMP] Add Missing Runtime Call for Globalization Remarks
2020-10-01 21:19:53 -04:00
PartialInlining.cpp
[Partial Inliner] Compute intrinsic cost through TTI
2020-09-16 15:12:31 +01:00
PassManagerBuilder.cpp
[OldPM] Pass manager: run SROA after (simple) loop unrolling
2020-10-04 11:53:50 +03:00
PruneEH.cpp
[PruneEH][NFC] Use CallGraphUpdater in PruneEH
2020-09-14 14:43:19 -07:00
SampleProfile.cpp
[SampleFDO] Enhance profile remapping support for searching inline instance
2020-08-26 11:07:35 -07:00
SCCP.cpp
Sink all InitializePasses.h includes
2019-11-13 16:34:37 -08:00
StripDeadPrototypes.cpp
Sink all InitializePasses.h includes
2019-11-13 16:34:37 -08:00
StripSymbols.cpp
[NewPM] Port strip* passes to NPM
2020-09-15 18:25:12 -07:00
SyntheticCountsPropagation.cpp
[CallGraph] Add support for callback call sites
2020-07-01 13:44:11 -07:00
ThinLTOBitcodeWriter.cpp
Revert "Move ModuleSummaryAnalysis from libAnalysis to libObject to break the dependency from Analysis to Object"
2020-04-14 00:27:08 +00:00
WholeProgramDevirt.cpp
[WholeProgramDevirt][NewPM] Add NPM testing path to match legacy pass
2020-09-30 17:27:37 -07:00