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History

Chad Rosier bf29f811c5 [LV] Use Demanded Bits and ValueTracking for reduction type-shrinking

The type-shrinking logic in reduction detection, although narrow in scope, is
also rather ad-hoc, which has led to bugs (e.g., PR35734). This patch modifies
the approach to rely on the demanded bits and value tracking analyses, if
available. We currently perform type-shrinking separately for reductions and
other instructions in the loop. Long-term, we should probably think about
computing minimal bit widths in a more complete way for the loops we want to
vectorize.

PR35734
Differential Revision: https://reviews.llvm.org/D42309

llvm-svn: 324195

2018-02-04 15:42:24 +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

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

ArgumentPromotion

[Debugify] Handled unsized types

2018-01-06 00:37:01 +00:00

AtomicExpand

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BDCE

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BlockExtractor

[llvm-extract] Support extracting basic blocks

2018-01-23 21:51:34 +00:00

BranchFolding

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CalledValuePropagation

Add CalledValuePropagation pass

2017-10-25 13:40:08 +00:00

CallSiteSplitting

[CallSiteSplitting] Fix infinite loop when recording conditions.

2018-01-26 10:36:50 +00:00

CodeExtractor

[CodeExtractor] Use subset of function attributes for extracted function.

2018-01-07 11:22:25 +00:00

CodeGenPrepare

[AMDGPU] Switch to the new addr space mapping by default

2018-02-02 16:07:16 +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

ConstProp

[TargetLibraryInfo] fix finite mathlib function availability

2018-01-08 17:38:09 +00:00

Coroutines

[coroutines] Add support for symmetric control transfer (musttail on coro.resumes followed by a suspend)

2017-08-25 02:25:10 +00:00

CorrelatedValuePropagation

[CVP] Don't Replace incoming values from unreachable blocks with undef.

2018-01-29 05:59:55 +00:00

CrossDSOCFI

[cfi] Build __cfi_check as Thumb when applicable.

2017-08-29 22:29:15 +00:00

DCE

Add an @llvm.sideeffect intrinsic

2017-11-08 21:59:51 +00:00

DeadArgElim

[DeadArgumentElimination] Preserve llvm.dbg.values's first argument

2018-01-30 16:42:04 +00:00

DeadStoreElimination

[DSE] make sure memory is not modified before partial store merging (PR36129)

2018-01-30 13:53:59 +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] Salvage debug info during DCE

2018-01-09 15:08:37 +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

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

FunctionImport

Make GlobalValues with non-default visibilility dso_local.

2018-01-18 02:08:23 +00:00

GCOVProfiling

Canonicalize the representation of empty an expression in DIGlobalVariableExpression

2017-08-30 18:06:51 +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

Re-commit : [PowerPC] Add handling for ColdCC calling convention and a pass to mark

2018-01-30 16:17:22 +00:00

GlobalSplit

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GuardWidening

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GVN

[NFC] fix trivial typos in comments

2018-01-24 05:04:35 +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

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

IndVarSimplify

Revert [SCEV] Fix isLoopEntryGuardedByCond usage

2018-01-22 07:47:02 +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

Remove unneeded -debug argument from new test

2018-02-03 17:33:50 +00:00

InstMerge

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InstNamer

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InstSimplify

[InstSimplify] (X * Y) / Y --> X for relaxed floating-point ops

2018-01-30 00:18:37 +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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IPConstantProp

[IPSCCP] Remove calls without side effects

2018-01-09 21:58:46 +00:00

IRCE

[NFC] Remove overconfident assert from IRCE

2018-01-24 07:51:41 +00:00

JumpThreading

[Dominators] Visit affected node candidates found at different root levels

2018-01-19 21:27:24 +00:00

LCSSA

[Debug] LCSSA: Insert dbg.value at the first available insertion point

2018-01-25 23:48:29 +00:00

LICM

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

LoadStoreVectorizer

[AMDGPU] Switch to the new addr space mapping by default

2018-02-02 16:07:16 +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

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

LoopInterchange

[LoopInterchange] Fix phi node ordering miscompile.

2017-10-21 13:58:37 +00:00

LoopLoadElim

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LoopPredication

[Loop Predication] Teach LP about reverse loops

2017-12-04 15:11:48 +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

[AMDGPU] Switch to the new addr space mapping by default

2018-02-02 16:07:16 +00:00

LoopUnroll

[AMDGPU] Switch to the new addr space mapping by default

2018-02-02 16:07:16 +00:00

LoopUnswitch

[LoopUnswitch] Fix a simple bug which disables loop unswitch for select statement

2017-08-29 21:45:11 +00:00

LoopVectorize

[LV] Use Demanded Bits and ValueTracking for reduction type-shrinking

2018-02-04 15:42:24 +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

LowerTypeTests: Add limited support for aliases

2018-01-10 00:00:51 +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

Re-land "[MergeICmps] Disable mergeicmps if the target does not want to handle memcmp expansion."

2017-10-10 08:00:45 +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

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NewGVN

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

ObjCARC

[ObjCARC] Do not turn a call to @objc_autoreleaseReturnValue into a call

2018-01-19 23:51:13 +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

PGOProfile

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

PhaseOrdering

[SimplifyCFG] don't sink common insts too soon (PR34603)

2017-12-14 22:05:20 +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: add global reassociation algorithm

2017-12-12 19:18:02 +00:00

Reg2Mem

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RewriteStatepointsForGC

[RS4GC] Handle call/invoke instructions as base defining values of vectors

2018-01-30 14:43:41 +00:00

SafeStack

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

SampleProfile

Profiling tests: Endianess XFAIL for powerpc- (32-bit)

2018-01-09 20:09:23 +00:00

Scalarizer

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SCCP

[SCCP] Pick the right lattice value for constants.

2017-11-22 03:04:55 +00:00

SeparateConstOffsetFromGEP

[SeparateConstOffsetFromGEP] Fix up addrspace in the AMDGPU test

2018-01-31 20:49:19 +00:00

SimpleLoopUnswitch

[PM/Unswitch] Teach SimpleLoopUnswitch to do non-trivial unswitching,

2017-11-17 19:58:36 +00:00

SimplifyCFG

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

Sink

[Sink] Really really fix predicate in legality check

2018-01-11 21:28:57 +00:00

SLPVectorizer

[SLP] Add extra test for extractelement shuffle, NFC.

2018-01-30 21:06:06 +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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SROA

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

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

Revert r321751, "StructurizeCFG: Fix broken backedge detection"

2018-01-24 18:02:05 +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

Make GlobalValues with non-default visibilility dso_local.

2018-01-18 02:08:23 +00:00

Util

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

WholeProgramDevirt

Make GlobalValues with non-default visibilility dso_local.

2018-01-18 02:08:23 +00:00