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llvm-mirror/lib/Transforms/Scalar/CMakeLists.txt
Roman Lebedev 10ca53ce65 [NewPM] Remove SpeculateAroundPHIs pass
Addition of this pass has been botched.
There is no particular reason why it had to be sold as an inseparable part
of new-pm transition. It was added when old-pm was still the default,
and very *very* few users were actually tracking new-pm,
so it's effects weren't measured.

Which means, some of the turnoil of the new-pm transition
are actually likely regressions due to this pass.

Likewise, there has been a number of post-commit feedback
(post new-pm switch), namely
* https://reviews.llvm.org/D37467#2787157 (regresses HW-loops)
* https://reviews.llvm.org/D37467#2787259 (should not be in middle-end, should run after LSR, not before)
* https://reviews.llvm.org/D95789 (an attempt to fix bad loop backedge metadata)
and in the half year past, the pass authors (google) still haven't found time to respond to any of that.

Hereby it is proposed to backout the pass from the pipeline,
until someone who cares about it can address the issues reported,
and properly start the process of adding a new pass into the pipeline,
with proper performance evaluation.

Furthermore, neither google nor facebook reports any perf changes
from this change, so i'm dropping the pass completely.
It can always be re-reverted should/if anyone want to pick it up again.

Reviewed By: aeubanks

Differential Revision: https://reviews.llvm.org/D104099
2021-06-15 20:35:55 +03:00

99 lines
2.0 KiB
CMake

add_llvm_component_library(LLVMScalarOpts
ADCE.cpp
AlignmentFromAssumptions.cpp
AnnotationRemarks.cpp
BDCE.cpp
CallSiteSplitting.cpp
ConstantHoisting.cpp
ConstraintElimination.cpp
CorrelatedValuePropagation.cpp
DCE.cpp
DeadStoreElimination.cpp
DivRemPairs.cpp
EarlyCSE.cpp
FlattenCFGPass.cpp
Float2Int.cpp
GuardWidening.cpp
GVN.cpp
GVNHoist.cpp
GVNSink.cpp
IVUsersPrinter.cpp
InductiveRangeCheckElimination.cpp
IndVarSimplify.cpp
InferAddressSpaces.cpp
InstSimplifyPass.cpp
JumpThreading.cpp
LICM.cpp
LoopAccessAnalysisPrinter.cpp
LoopBoundSplit.cpp
LoopSink.cpp
LoopDeletion.cpp
LoopDataPrefetch.cpp
LoopDistribute.cpp
LoopFuse.cpp
LoopIdiomRecognize.cpp
LoopInstSimplify.cpp
LoopInterchange.cpp
LoopFlatten.cpp
LoopLoadElimination.cpp
LoopPassManager.cpp
LoopPredication.cpp
LoopRerollPass.cpp
LoopRotation.cpp
LoopSimplifyCFG.cpp
LoopStrengthReduce.cpp
LoopUnrollPass.cpp
LoopUnrollAndJamPass.cpp
LoopUnswitch.cpp
LoopVersioningLICM.cpp
LowerAtomic.cpp
LowerConstantIntrinsics.cpp
LowerExpectIntrinsic.cpp
LowerGuardIntrinsic.cpp
LowerMatrixIntrinsics.cpp
LowerWidenableCondition.cpp
MakeGuardsExplicit.cpp
MemCpyOptimizer.cpp
MergeICmps.cpp
MergedLoadStoreMotion.cpp
NaryReassociate.cpp
NewGVN.cpp
PartiallyInlineLibCalls.cpp
PlaceSafepoints.cpp
Reassociate.cpp
Reg2Mem.cpp
RewriteStatepointsForGC.cpp
SCCP.cpp
SROA.cpp
Scalar.cpp
Scalarizer.cpp
ScalarizeMaskedMemIntrin.cpp
SeparateConstOffsetFromGEP.cpp
SimpleLoopUnswitch.cpp
SimplifyCFGPass.cpp
Sink.cpp
SpeculativeExecution.cpp
StraightLineStrengthReduce.cpp
StructurizeCFG.cpp
TailRecursionElimination.cpp
WarnMissedTransforms.cpp
ADDITIONAL_HEADER_DIRS
${LLVM_MAIN_INCLUDE_DIR}/llvm/Transforms
${LLVM_MAIN_INCLUDE_DIR}/llvm/Transforms/Scalar
DEPENDS
intrinsics_gen
COMPONENT_NAME
Scalar
LINK_COMPONENTS
AggressiveInstCombine
Analysis
Core
InstCombine
Support
TransformUtils
)