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llvm-project/llvm/test/Transforms
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Andrei Elovikov f9b8035f3c [LoopUnroll] Ignore ephemeral values when checking full unroll profitability. 
Summary:
Before this patch call graph is like this in the LoopUnrollPass:

  tryToUnrollLoop
    ApproximateLoopSize
      collectEphemeralValues
      /* Use collected ephemeral values */
    computeUnrollCount
      analyzeLoopUnrollCost
        /* Bail out from the analysis if loop contains CallInst */

This patch moves collection of the ephemeral values to the tryToUnrollLoop
function and passes the collected values into both ApproximateLoopsize (as
before) and additionally starts using them in analyzeLoopUnrollCost:

  tryToUnrollLoop
    collectEphemeralValues
    ApproximateLoopSize(EphValues)
      /* Use EphValues */
    computeUnrollCount(EphValues)
      analyzeLoopUnrollCost(EphValues)
        /* Ignore ephemeral values - they don't contribute to the final cost */
        /* Bail out from the analysis if loop contains CallInst */

Reviewers: mzolotukhin, evstupac, sanjoy

Reviewed By: evstupac

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D43931

llvm-svn: 327617
 		2018-03-15 09:59:15 +00:00
..
ADCE
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AddDiscriminators Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1) 2018-01-19 17:13:12 +00:00
AggressiveInstCombine [AggressiveInstCombine] Fixed TruncCombine class to handle TruncInst leaf node correctly. 2018-01-31 22:39:05 +00:00
AlignmentFromAssumptions [AlignmentFromAssumptions] Set source and dest alignments of memory intrinsiscs separately 2018-02-22 18:55:59 +00:00
ArgumentPromotion [ArgumentPromotion] don't break musttail invariant PR36543 2018-03-02 00:59:27 +00:00
AtomicExpand
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BDCE [BDCE] Salvage debug info from dying insts 2018-02-21 01:55:33 +00:00
BlockExtractor BlockExtractor: Don’t delete functions directly 2018-03-12 22:28:18 +00:00
BranchFolding
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CallSiteSplitting [CallSiteSplitting] Do not crash when BB's terminator changes. 2018-03-06 14:00:58 +00:00
CalledValuePropagation Add CalledValuePropagation pass 2017-10-25 13:40:08 +00:00
CodeExtractor [PartialInlining] Use isInlineViable to detect constructs preventing inlining. 2018-03-10 14:53:44 +00:00
CodeGenPrepare [CGP] Fix the remove of matched phis in complex addressing mode 2018-03-12 03:50:07 +00:00
ConstProp [TargetLibraryInfo] fix finite mathlib function availability 2018-01-08 17:38:09 +00:00
ConstantHoisting Fix out-of-order stepping behavior in programs with hoisted constants. 2017-11-09 20:01:31 +00:00
ConstantMerge Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
Coroutines [Coroutines] Don't move stores for allocator args 2018-02-15 19:31:45 +00:00
CorrelatedValuePropagation Back out "Re-land: Teach CorrelatedValuePropagation to reduce the width of udiv/urem instructions." 2018-03-12 09:26:09 +00:00
CrossDSOCFI
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DCE [DCE] Salvage debug info from dead insts 2018-02-15 22:26:18 +00:00
DeadArgElim [DAE] don't remove args of musttail target/caller 2018-03-01 00:09:35 +00:00
DeadStoreElimination [DSE] Don't DSE stores that subsequent memmove calls read from 2018-02-20 23:19:34 +00:00
DivRemPairs [DivRemPairs] split tests per target to account for bots that don't build for all targets 2017-09-09 14:10:59 +00:00
EarlyCSE [EarlyCSE] Exploit open ended invariant.start scopes 2018-03-14 21:35:06 +00:00
EliminateAvailableExternally
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EntryExitInstrumenter EntryExitInstrumenter: set DebugLocs on the inserted call instructions (PR35412) 2017-11-28 18:44:26 +00:00
ExpandMemCmp/X86 [x86, MemCmpExpansion] allow 2 pairs of loads per block (PR33325) 2018-01-06 16:16:04 +00:00
Float2Int
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ForcedFunctionAttrs
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FunctionAttrs [FunctionAttrs][ArgumentPromotion][GlobalOpt] Disable some optimisations passes for naked functions 2018-02-22 14:42:08 +00:00
FunctionImport Reland r327041: [ThinLTO] Keep available_externally symbols live 2018-03-13 05:08:48 +00:00
GCOVProfiling Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
GVN Mark MergedLoadStoreMotion as not preserving MemDep results 2018-02-23 10:41:57 +00:00
GVNHoist [GVNHoist] Fix: PR35222 gvn-hoist incorrectly erases load in case of a loop 2018-01-04 07:47:24 +00:00
GVNSink Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
GlobalDCE
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GlobalMerge Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
GlobalOpt [Evaluator] Evaluate load/store with bitcast 2018-03-13 10:19:50 +00:00
GlobalSplit
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GuardWidening
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IPConstantProp [IPSCCP] do not break musttail invariant (PR36485) 2018-03-01 01:19:18 +00:00
IRCE [SCEV] Smart range calculation for SCEVUnknown Phis 2018-03-01 06:56:48 +00:00
IndVarSimplify Revert [SCEV] Fix isKnownPredicate 2018-03-13 06:36:00 +00:00
IndirectBrExpand Introduce the "retpoline" x86 mitigation technique for variant #2 of the speculative execution vulnerabilities disclosed today, specifically identified by CVE-2017-5715, "Branch Target Injection", and is one of the two halves to Spectre.. 2018-01-22 22:05:25 +00:00
InferAddressSpaces [AMDGPU] Switch to the new addr space mapping by default 2018-02-02 16:07:16 +00:00
InferFunctionAttrs
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Inline [NFC] fix trivial typos in comments and documents 2018-01-29 05:17:03 +00:00
InstCombine [InstCombine] [NFC] Add tests for peeking through unsigned FP casts for zero-equality compares (PR36682) 2018-03-14 17:31:03 +00:00
InstMerge
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InstNamer
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InstSimplify [InstSimplify] add tests for frem and vectors with undef; NFC 2018-03-14 22:45:58 +00:00
InterleavedAccess [X86][LLVM]Expanding Supports lowerInterleaved{store|load}() in X86InterleavedAccess (VF64 stride 3-4) 2017-10-02 07:35:25 +00:00
Internalize
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JumpThreading [LazyValueInfo] PR33357 prevent infinite recursion on BinaryOperator 2018-03-13 18:14:10 +00:00
LCSSA [Test] Fix the test to output to /dev/null instead of redirecting. 2018-02-23 19:03:04 +00:00
LICM [LICM] update BlockColors after splitting predecessors 2018-02-12 17:56:55 +00:00
LoadStoreVectorizer [AMDGPU] Supported ds_read_b128 generation; Widened vector length for local address-space. 2018-03-09 17:41:39 +00:00
LoopDataPrefetch
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LoopDeletion [LoopDeletion] Handle users in unreachable block 2018-01-12 07:24:43 +00:00
LoopDistribute
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LoopIdiom Adding a width of the GEP index to the Data Layout. 2018-02-14 06:58:08 +00:00
LoopInterchange DA: remove uses of GEP, only ask SCEV 2018-03-06 21:55:59 +00:00
LoopLoadElim
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LoopPredication [Loop Predication] Teach LP about reverse loops with uge and sge latch conditions 2018-02-08 10:34:08 +00:00
LoopReroll
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LoopRotate [LoopRotate] Detect loops with indirect branches better (we're giving up on them). 2018-01-09 23:54:35 +00:00
LoopSimplify [BasicBlockUtils] Check for unreachable preds before updating LI in UpdateAnalysisInformation 2018-01-02 16:25:50 +00:00
LoopSimplifyCFG
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LoopStrengthReduce Revert "[PowerPC] LSR tunings for PowerPC" 2018-03-09 16:08:55 +00:00
LoopUnroll [LoopUnroll] Ignore ephemeral values when checking full unroll profitability. 2018-03-15 09:59:15 +00:00
LoopUnswitch [SimplifyCFG] Re-apply Relax restriction for folding unconditional branches 2018-02-08 07:16:29 +00:00
LoopVectorize [LV] Adding test for r327109 2018-03-09 18:02:36 +00:00
LoopVersioning
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LoopVersioningLICM
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LowerAtomic
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LowerExpectIntrinsic
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LowerGuardIntrinsic
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LowerInvoke
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LowerSwitch
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LowerTypeTests Use branch funnels for virtual calls when retpoline mitigation is enabled. 2018-03-09 19:11:44 +00:00
Mem2Reg [Debugify] Add a pass to test debug info preservation 2017-12-08 21:57:28 +00:00
MemCpyOpt Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1) 2018-01-19 17:13:12 +00:00
MergeFunc Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1) 2018-01-19 17:13:12 +00:00
MergeICmps [MergeICmps] Make sure that the comparison only has one use. 2018-03-13 07:05:55 +00:00
MetaRenamer Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1) 2018-01-19 17:13:12 +00:00
NameAnonGlobals
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NaryReassociate Add early exit on reassociation of 0 expression. 2018-03-07 02:17:08 +00:00
NewGVN [InstCombine, NewGVN] remove FP undef from tests 2018-03-08 14:57:08 +00:00
ObjCARC ObjCARC: teach the cloner about funclets 2018-03-12 21:46:09 +00:00
PGOProfile [ThinLTO] Recommit of import global variables 2018-03-12 10:30:50 +00:00
PartiallyInlineLibCalls [PartiallyInlineLibCalls][x86] add TTI hook to allow sqrt inlining to depend on arg rather than result 2017-11-27 21:15:43 +00:00
PhaseOrdering Adding a width of the GEP index to the Data Layout. 2018-02-14 06:58:08 +00:00
PlaceSafepoints Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1) 2018-01-19 17:13:12 +00:00
PreISelIntrinsicLowering
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PruneEH
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Reassociate [Reassociate] fix test to be independent of FP undef 2018-03-08 22:05:27 +00:00
Reg2Mem
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RewriteStatepointsForGC [RewriteStatepoints] Fix stale parse points 2018-03-05 22:27:30 +00:00
SCCP [IPSCCP] Add getCompare which returns either true, false, undef or null. 2018-03-05 17:33:50 +00:00
SLPVectorizer [SLP] Additional tests for stores vectorization, NFC. 2018-03-05 20:20:12 +00:00
SROA [SROA] Take advantage of separate alignments for memcpy source and destination 2018-03-13 14:25:33 +00:00
SafeStack [SafeStack] Use updated CreateMemCpy API to set more accurate source and destination alignments. 2018-02-12 22:39:47 +00:00
SampleProfile Profiling tests: Endianess XFAIL for powerpc- (32-bit) 2018-01-09 20:09:23 +00:00
Scalarizer
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SeparateConstOffsetFromGEP [AMDGPU] Change constant addr space to 4 2018-02-13 18:00:25 +00:00
SimpleLoopUnswitch [PM/Unswitch] Teach SimpleLoopUnswitch to do non-trivial unswitching, 2017-11-17 19:58:36 +00:00
SimplifyCFG Revert "[Debug] Retain both sets of debug intrinsics in HoistThenElseCodeToIf" 2018-03-09 22:00:10 +00:00
Sink [Sink] Really really fix predicate in legality check 2018-01-11 21:28:57 +00:00
SpeculateAroundPHIs Add a new pass to speculate around PHI nodes with constant (integer) operands when profitable. 2017-11-28 11:32:31 +00:00
SpeculativeExecution
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StraightLineStrengthReduce
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StripDeadPrototypes
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StripSymbols Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
StructurizeCFG [StructurizeCFG] fix test to be independent of FP undef 2018-03-08 17:13:57 +00:00
SyntheticCountsPropagation Add a pass to generate synthetic function entry counts. 2018-01-09 19:39:35 +00:00
TailCallElim Remove this test 2017-11-28 22:39:38 +00:00
ThinLTOBitcodeWriter [ThinLTO] fix test failure without x86 backend 2018-02-06 07:03:09 +00:00
Util LowerDbgDeclare: ignore dbg.declares for allocas with volatile access 2018-03-09 00:45:04 +00:00
WholeProgramDevirt Use branch funnels for virtual calls when retpoline mitigation is enabled. 2018-03-09 19:11:44 +00:00