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3f3f1a395f
llvm-mirror/test/Transforms
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Chen Li 3f3f1a395f [LoopUnswitch] Add block frequency analysis to recognize hot/cold regions 
Summary: This patch adds block frequency analysis to LoopUnswitch pass to recognize hot/cold regions. For cold regions the pass only performs trivial unswitches since they do not increase code size, and for hot regions everything works as before. This helps to minimize code growth in cold regions and be more aggressive in hot regions. Currently the default cold regions are blocks with frequencies below 20% of function entry frequency, and it can be adjusted via -loop-unswitch-cold-block-frequency flag. The entire feature is controlled via -loop-unswitch-with-block-frequency flag and it is off by default.

Reviewers: broune, silvas, dnovillo, reames

Subscribers: davidxl, llvm-commits

Differential Revision: http://reviews.llvm.org/D11605

llvm-svn: 248777
2015-09-29 05:03:32 +00:00
..
ADCE
AddDiscriminators DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
AlignmentFromAssumptions
ArgumentPromotion DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
AtomicExpand [ARM] Emit clrex in the expanded cmpxchg fail block. 2015-09-22 17:22:58 +00:00
BBVectorize [PM/AA] Rebuild LLVM's alias analysis infrastructure in a way compatible 2015-09-09 17:55:00 +00:00
BDCE
BranchFolding Make the default triple optional by allowing an empty string 2015-09-16 05:34:32 +00:00
CodeExtractor
CodeGenPrepare Introducing llvm.invariant.group.barrier intrinsic 2015-09-15 18:32:14 +00:00
ConstantHoisting
ConstantMerge [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
ConstProp [test] (NFC) Simplify Transforms/ConstProp/calls.ll 2015-08-28 18:04:20 +00:00
CorrelatedValuePropagation [LazyValueInfo] Report nonnull range for nonnull pointers 2015-09-18 13:01:48 +00:00
DeadArgElim [DeadArgElim] Split the invoke successor edge 2015-09-23 15:41:09 +00:00
DeadStoreElimination [DeadStoreElimination] Remove dead zero store to calloc initialized memory 2015-09-23 11:38:44 +00:00
EarlyCSE Allow value forwarding past release fences in EarlyCSE 2015-08-27 01:32:33 +00:00
EliminateAvailableExternally
Float2Int
FunctionAttrs [FunctionAttr] Infer nonnull attributes on returns 2015-08-31 19:44:38 +00:00
GCOVProfiling DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
GlobalDCE [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
GlobalOpt [GlobalOpt] Sort members of llvm.used deterministically 2015-09-28 19:02:11 +00:00
GVN [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
IndVarSimplify [SCEV] Don't crash on pointer comparisons 2015-09-28 21:14:32 +00:00
Inline Move dbg.declare intrinsics when merging and replacing allocas. 2015-09-29 00:30:19 +00:00
InstCombine [InstCombine] fold zexts and constants into a phi (PR24766) 2015-09-27 20:34:31 +00:00
InstMerge
InstSimplify [InstSimplify] Fold simple known implications to true 2015-09-28 17:14:24 +00:00
Internalize [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
IPConstantProp
IRCE
JumpThreading [LazyValueInfo] Look through Phi nodes when trying to prove a predicate 2015-08-31 18:31:48 +00:00
LCSSA
LICM [LICM] Hoist calls to readonly argmemonly functions even with stores in the loop 2015-09-21 22:27:59 +00:00
LoadCombine
LoopDeletion
LoopDistribute [LAA] Hold bounds via ValueHandles during SCEV expansion 2015-08-21 23:19:57 +00:00
LoopIdiom DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
LoopInterchange
LoopReroll [LoopReroll] Ignore debug intrinsics 2015-09-28 17:03:23 +00:00
LoopRotate DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
LoopSimplify DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
LoopStrengthReduce DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
LoopUnroll [Unroll] Do not crash trying to propagate a value to vector load. 2015-09-22 22:27:12 +00:00
LoopUnswitch [LoopUnswitch] Add block frequency analysis to recognize hot/cold regions 2015-09-29 05:03:32 +00:00
LoopVectorize [LoopUtils,LV] Propagate fast-math flags on generated FCmp instructions 2015-09-21 19:41:19 +00:00
LowerAtomic
LowerBitSets [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
LowerExpectIntrinsic
LowerInvoke
LowerSwitch [LowerSwitch] Fix a bug when LowerSwitch deletes the default block 2015-08-11 18:12:26 +00:00
Mem2Reg DI: Update tests before adding !dbg subprogram attachments 2015-08-28 23:32:00 +00:00
MemCpyOpt Emit argmemonly attribute for intrinsics. 2015-08-13 17:40:04 +00:00
MergeFunc [MergeFuncs] Fix bug in merging GetElementPointers 2015-09-14 15:37:48 +00:00
MetaRenamer [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
NaryReassociate [NaryReassociate] Improve test CHECK 2015-09-16 05:27:46 +00:00
ObjCARC [PM/AA] Rebuild LLVM's alias analysis infrastructure in a way compatible 2015-09-09 17:55:00 +00:00
PartiallyInlineLibCalls
PhaseOrdering
PlaceSafepoints [PlaceSafepoints] Make the width of a counted loop settable. 2015-09-15 01:42:48 +00:00
PruneEH
Reassociate Fix a bunch of trivial cases of 'CHECK[^:]*$' in the tests. NFCI 2015-08-10 19:01:27 +00:00
Reg2Mem
RewriteStatepointsForGC [RewriteStatepointsForGC] Extend base pointer inference to handle insertelement 2015-09-09 23:40:12 +00:00
SafeStack [safestack] Fix compiler crash in the presence of stack restores. 2015-09-24 01:23:51 +00:00
SampleProfile Use fixed-point representation for BranchProbability. 2015-09-25 23:09:59 +00:00
Scalarizer DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
ScalarRepl DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
SCCP [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
SeparateConstOffsetFromGEP [SeparateConstOffsetFromGEP] sext(a)+sext(b) => sext(a+b) when a+b can't sign-overflow. 2015-08-14 02:02:05 +00:00
SimplifyCFG [EH] Create removeUnwindEdge utility 2015-09-27 01:47:46 +00:00
Sink
SLPVectorizer DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
SpeculativeExecution
SROA [PM] Port SROA to the new pass manager. 2015-09-12 09:09:14 +00:00
StraightLineStrengthReduce [SeparateConstOffsetFromGEP] strengthen the inbounds attribute 2015-08-13 18:48:49 +00:00
StripSymbols DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
StructurizeCFG Fix CHECK directives that weren't checking. 2015-08-31 21:10:35 +00:00
TailCallElim Fix a bunch of trivial cases of 'CHECK[^:]*$' in the tests. NFCI 2015-08-10 19:01:27 +00:00
TailDup
Util