David Majnemer 4ee6f6446b [SimplifyCFG] Don't mistake icmp of and for a tree of comparisons ...

SimplifyCFG tries to turn complex branch conditions into a switch.
Some of it's logic attempts to reason about bitwise arithmetic produced
by InstCombine.  InstCombine can turn things like (X == 2) || (X == 3)
into (X & 1) == 2 and so SimplifyCFG tries to detect when this occurs so
that it can produce a switch instruction.

However, the legality checking was not sufficient to determine whether
or not this had occured.  Correctly check this case by requiring that
the right-hand side of the comparison be a power of two.

This fixes PR26323.

llvm-svn: 258904

2016-01-27 02:43:28 +00:00

..

ADCE

[PM] Port ADCE to the new pass manager

2015-10-30 23:13:18 +00:00

AddDiscriminators

Reimplement discriminator assignment algorithm.

2015-11-19 19:53:05 +00:00

AlignmentFromAssumptions

Revert "Change memcpy/memset/memmove to have dest and source alignments."

2015-11-19 05:56:52 +00:00

ArgumentPromotion

DI: Reverse direction of subprogram -> function edge.

2015-11-05 22:03:56 +00:00

AtomicExpand

[IR] Add support for floating pointer atomic loads and stores

2015-12-16 00:49:36 +00:00

BBVectorize

Have a single way for creating unique value names.

2015-11-22 00:16:24 +00:00

BDCE

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

BranchFolding

Move branch folding test to a better location.

2015-12-03 19:41:25 +00:00

CodeExtractor

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

CodeGenPrepare

[InstCombine] Rewrite bswap/bitreverse handling completely.

2016-01-15 09:20:19 +00:00

ConstantHoisting

[opaque pointer type] Add textual IR support for explicit type parameter to the call instruction

2015-04-16 23:24:18 +00:00

ConstantMerge

[opaque pointer type] Add textual IR support for explicit type parameter for global aliases

2015-09-11 03:22:04 +00:00

ConstProp

IR: Make ConstantDataArray::getFP actually return a ConstantDataArray

2015-12-09 21:21:07 +00:00

CorrelatedValuePropagation

Revert "Change memcpy/memset/memmove to have dest and source alignments."

2015-11-19 05:56:52 +00:00

CrossDSOCFI

[cfi] Cross-DSO CFI diagnostic mode (LLVM part).

2016-01-25 23:35:03 +00:00

DeadArgElim

[OperandBundles] Have DeadArgElim play nice with operand bundles

2015-12-23 09:58:36 +00:00

DeadStoreElimination

[BasicAliasAnalysis] Take into account operand bundles in the getModRefInfo function

2016-01-16 12:15:53 +00:00

EarlyCSE

Fix several accidental DOS line endings in source files

2016-01-03 17:22:03 +00:00

EliminateAvailableExternally

Don't change the visibility when converting a definition to a declaration.

2015-07-13 14:18:22 +00:00

Float2Int

[Float2Int] Don't operate on vector instructions

2015-12-09 21:08:18 +00:00

ForcedFunctionAttrs

[attrs] Split off the forced attributes utility into its own pass that

2015-12-27 08:13:45 +00:00

FunctionAttrs

[attrs] Split the late-revisit pattern for deducing norecurse in

2016-01-08 10:55:52 +00:00

FunctionImport

Fix bot failure from r257493: remove extraneous temp file read

2016-01-12 17:53:59 +00:00

GCOVProfiling

[GCOV] Avoid emitting profile arcs for module and skeleton CUs

2016-01-21 17:04:42 +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

Make sure that any new and optimized objects created during GlobalOPT copy all the attributes from the base object.

2016-01-22 21:18:20 +00:00

GVN

Fix for two constant propagation problems in GVN with the assume intrinsic

2016-01-21 21:32:35 +00:00

IndVarSimplify

[SCEV] Fix PR26207

2016-01-19 20:53:51 +00:00

InferFunctionAttrs

[BasicAA] Remove special casing of memset_pattern16 in favor of generic attribute inference

2016-01-06 04:53:16 +00:00

Inline

[Inliner/WinEH] Honor implicit nounwinds

2016-01-20 02:15:15 +00:00

InstCombine

[LibCallSimplifier] fold memset(malloc(x), 0, x) --> calloc(1, x)

2016-01-26 16:17:24 +00:00

InstMerge

…

InstSimplify

[InstCombine] Simplify (x >> y) <= x

2016-01-21 18:55:54 +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

[SCCP] Don't violate the lattice invariants

2016-01-07 21:36:16 +00:00

IRCE

…

JumpThreading

Add test for r257279.

2016-01-10 07:13:33 +00:00

LCSSA

[WinEH] Update LCSSA to handle catchswitch with handlers inside and outside a loop

2015-12-18 18:12:35 +00:00

LICM

[LICM] Fix a small oversight introduced in r256763

2016-01-04 23:16:22 +00:00

LoadCombine

…

LoopDeletion

…

LoopDistribute

Allow LLE/LD and the loop versioning infrastructure to use SCEV predicates

2015-11-09 13:26:09 +00:00

LoopIdiom

[LIR] Add support for structs and hand unrolled loops

2016-01-26 02:27:47 +00:00

LoopInterchange

Add support to interchange loops with reductions.

2015-04-23 04:51:44 +00:00

LoopLoadElim

Allow LLE/LD and the loop versioning infrastructure to use SCEV predicates

2015-11-09 13:26:09 +00:00

LoopReroll

Enable loopreroll to rerool loop with pointer induction variable.

2016-01-25 19:43:45 +00:00

LoopRotate

DI: Reverse direction of subprogram -> function edge.

2015-11-05 22:03:56 +00:00

LoopSimplify

DI: Reverse direction of subprogram -> function edge.

2015-11-05 22:03:56 +00:00

LoopStrengthReduce

Followup to 258750; update more tests to use .p2align .

2016-01-26 00:35:07 +00:00

LoopUnroll

LoopUnroll: Use the optsize threshold for minsize as well

2016-01-11 22:39:43 +00:00

LoopUnswitch

[IR] Reformulate LLVM's EH funclet IR

2015-12-12 05:38:55 +00:00

LoopVectorize

AVX1 : Enable vector masked_load/store to AVX1.

2016-01-25 10:17:11 +00:00

LowerAtomic

…

LowerBitSets

[cfi] Fix LowerBitSets on 32-bit targets.

2015-12-21 22:14:04 +00:00

LowerExpectIntrinsic

[PM] Port StripDeadPrototypes to the new pass manager

2015-10-30 23:28:12 +00:00

LowerInvoke

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

LowerSwitch

Have a single way for creating unique value names.

2015-11-22 00:16:24 +00:00

Mem2Reg

[Mem2Reg] Respect optnone

2015-12-11 13:36:59 +00:00

MemCpyOpt

Fix PR26051: Memcpy optimization should introduce a call to memcpy before the store destination position

2016-01-06 23:50:22 +00:00

MergeFunc

[IR] Remove terminatepad

2015-12-14 18:34:23 +00:00

MetaRenamer

Revert "Change memcpy/memset/memmove to have dest and source alignments."

2015-11-19 05:56:52 +00:00

NaryReassociate

[NaryReassociate] allow candidate to have a different type

2015-12-18 21:36:30 +00:00

ObjCARC

Revert "Change memcpy/memset/memmove to have dest and source alignments."

2015-11-19 05:56:52 +00:00

PartiallyInlineLibCalls

…

PGOProfile

[PGO] IR level instrumentation of indirect call value profiling

2016-01-21 18:11:44 +00:00

PhaseOrdering

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

PlaceSafepoints

[PlaceSafepoints] Introduce a -spp-no-statepoints flag

2016-01-22 21:02:55 +00:00

PruneEH

[PruneEH] Don't try to insert a terminator after another terminator

2016-01-23 06:00:44 +00:00

Reassociate

Reassociate: Reprocess RedoInsts after each inst

2016-01-26 18:42:36 +00:00

Reg2Mem

Move the personality function from LandingPadInst to Function

2015-06-17 20:52:32 +00:00

RewriteStatepointsForGC

Add a "gc-transition" operand bundle

2016-01-20 19:50:25 +00:00

SafeStack

[safestack] Add option for non-TLS unsafe stack pointer.

2015-12-22 00:13:11 +00:00

SampleProfile

SamplePGO - Add initial support for inliner annotations.

2015-11-27 23:14:51 +00:00

Scalarizer

DI: Reverse direction of subprogram -> function edge.

2015-11-05 22:03:56 +00:00

ScalarRepl

Revert "Change memcpy/memset/memmove to have dest and source alignments."

2015-11-19 05:56:52 +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

[SimplifyCFG] Don't mistake icmp of and for a tree of comparisons

2016-01-27 02:43:28 +00:00

Sink

[IR] Reformulate LLVM's EH funclet IR

2015-12-12 05:38:55 +00:00

SLPVectorizer

Revert "Reapply commit r258404 with fix"

2016-01-26 15:45:49 +00:00

SpeculativeExecution

Add a speculative execution pass

2015-05-15 17:54:48 +00:00

SROA

[SROA] Also insert a bit piece expression if only one piece is needed

2016-01-14 20:06:34 +00:00

StraightLineStrengthReduce

[SeparateConstOffsetFromGEP] strengthen the inbounds attribute

2015-08-13 18:48:49 +00:00

StripDeadPrototypes

[PM] Port StripDeadPrototypes to the new pass manager

2015-10-30 23:28:12 +00:00

StripSymbols

DI: Reverse direction of subprogram -> function edge.

2015-11-05 22:03:56 +00:00

StructurizeCFG

AMDGPU: Replace some deprecated intrinsic uses in tests

2016-01-23 05:42:49 +00:00

TailCallElim

Push isDereferenceableAndAlignedPointer down into isSafeToLoadUnconditionally

2016-01-17 12:35:29 +00:00

TailDup

[opaque pointer type] Add textual IR support for explicit type parameter to the call instruction

2015-04-16 23:24:18 +00:00

Util

[Utils] Fix incorrect dbg.declare store conversion

2016-01-14 19:12:27 +00:00