Sanjay Patel 2e4fd7b84f [InstCombine] add motivational comment for tests; NFC ...

The referenced tests are derived from:
https://bugs.llvm.org/show_bug.cgi?id=32791
and:
https://reviews.llvm.org/D33172

The motivation for including negative tests may not be clear, so I'm adding an explanatory comment here.
In the post-commit thread for r303133:
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20170515/453793.html
...it was mentioned that we don't want to add redundant tests. This is a valid point. But in this case, 
we have a patch under review (D33172) that demonstrates that no existing regression tests are affected by
a proposed code change, but these are. Therefore, I think these tests have value not visible in any 
existing regression tests regardless of whether they show a transform.

Differential Revision: https://reviews.llvm.org/D33242


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303185 91177308-0d34-0410-b5e6-96231b3b80d8

2017-05-16 16:30:46 +00:00

..

ADCE

Fix a test to check assembly output instead of bitcode.

2017-03-31 23:22:19 +00:00

AddDiscriminators

[AddDiscriminators] Assign discriminators to MemIntrinsic calls.

2017-04-11 19:07:30 +00:00

AlignmentFromAssumptions

[PM] Port AlignmentFromAssumptions to the new PM.

2016-06-15 06:18:01 +00:00

ArgumentPromotion

[ArgPromotion] Add a testcase for PR32917

2017-05-05 08:40:24 +00:00

AtomicExpand

Add address space mangling to lifetime intrinsics

2017-04-10 20:18:21 +00:00

BBVectorize

Replace hardcoded intrinsic list with speculatable attribute.

2017-05-03 02:26:10 +00:00

BDCE

[Analysis] Support bitreverse in -demanded-bits pass

2017-04-13 16:44:25 +00:00

BranchFolding

Move branch folding test to a better location.

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

CodeExtractor

[PartialInlining] Profile based cost analysis

2017-05-12 23:41:43 +00:00

CodeGenPrepare

Restrict call metadata based hotness detection to Sample PGO mode

2017-05-11 23:18:05 +00:00

ConstantHoisting

[ConstHoisting] Add BFI in constanthoisting pass and select the best insertion

2017-04-21 15:50:16 +00:00

ConstantMerge

Don't merge global constants with non-dbg metadata.

2017-03-09 00:03:37 +00:00

ConstProp

Fix two tests that weren't correctly copied.

2017-05-14 22:07:50 +00:00

Coroutines

[coroutines] Handle unwind edge splitting

2017-05-16 14:11:39 +00:00

CorrelatedValuePropagation

Add address space mangling to lifetime intrinsics

2017-04-10 20:18:21 +00:00

CountingFunctionInserter

Add a counter-function insertion pass

2016-09-01 09:42:39 +00:00

CrossDSOCFI

[PM] Port CrossDSOCFI to the new pass manager.

2016-07-09 03:25:35 +00:00

DCE

llvm/test/Transforms/DCE/calls-errno.ll: Suppress checking @pow(+0,-1).

2016-11-04 18:50:45 +00:00

DeadArgElim

Replace hardcoded intrinsic list with speculatable attribute.

2017-05-03 02:26:10 +00:00

DeadStoreElimination

Add address space mangling to lifetime intrinsics

2017-04-10 20:18:21 +00:00

EarlyCSE

[EarlyCSE] Mark the condition of assume intrinsic as true

2017-04-28 06:25:39 +00:00

EliminateAvailableExternally

[PM] Port EliminateAvailableExternally pass to the new pass manager.

2016-05-05 02:37:32 +00:00

Float2Int

[PM] Port float2int to the new pass manager

2016-06-24 23:32:02 +00:00

ForcedFunctionAttrs

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

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

FunctionAttrs

Support arbitrary address space pointers in masked gather/scatter intrinsics.

2017-05-03 12:28:54 +00:00

FunctionImport

Revert r295861, "[ModuleSummaryAnalysis] Don't crash when referencing unnamed globals."

2017-05-03 00:18:48 +00:00

GCOVProfiling

[IR] Remove the DIExpression field from DIGlobalVariable.

2016-12-20 02:09:43 +00:00

GlobalDCE

[PH] Replace uses of AssertingVH from members of analysis results with

2017-01-24 12:55:57 +00:00

GlobalMerge

Renumber testcase metadata nodes after r290153.

2016-12-22 00:45:21 +00:00

GlobalOpt

[GlobalOpt] Correctly update metadata when localizing a global.

2017-04-27 18:39:08 +00:00

GlobalSplit

Fix one-after-the-end type metadata handling in globalsplit.

2017-03-07 22:18:48 +00:00

GuardWidening

[GuardWidening] Fix incorrect use of remove_if

2016-05-21 02:24:44 +00:00

GVN

[GVN] Fix a crash on encountering non-integral pointers

2017-05-09 21:07:20 +00:00

GVNHoist

Disable GVN Hoist due to still more bugs being found in it. There is

2017-04-27 00:28:03 +00:00

IndVarSimplify

ConstantFold: Fold getelementptr (i32, i32* null, i64 undef) to null.

2017-05-08 17:37:29 +00:00

InferAddressSpaces

InferAddressSpaces: Search constant expressions for addrspacecasts

2017-04-28 22:52:41 +00:00

InferFunctionAttrs

[TLI] Add declarations for various math header file routines from math-finite.h that create '__<func>_finite as functions

2017-05-12 22:11:12 +00:00

Inline

Renable test that was disabled due to cost analysis

2017-05-14 02:58:39 +00:00

InstCombine

[InstCombine] add motivational comment for tests; NFC

2017-05-16 16:30:46 +00:00

InstMerge

Remove the load hoisting code of MLSM, it is completely subsumed by GVNHoist

2017-01-24 19:55:36 +00:00

InstNamer

Add basic test case for -instnamer

2017-05-08 23:18:46 +00:00

InstSimplify

[InstSimplify] add tests for unnecessary mask of shifted values; NFC

2017-05-15 22:54:37 +00:00

InterleavedAccess

[ARM/AArch64] Ensure valid vector element types for interleaved accesses

2017-04-10 18:34:37 +00:00

Internalize

[Internalize] Test that __stack_chk_{guard, fail} are not internalized.

2016-06-05 19:08:54 +00:00

IPConstantProp

[IPCP] Don't propagate return value for naked functions.

2017-02-04 19:44:14 +00:00

IRCE

[IRCE] Add a missing invariant check

2017-02-07 23:59:07 +00:00

JumpThreading

Take indirect branch into account as well when folding.

2017-05-01 17:15:37 +00:00

LCSSA

Revert "Revert r275883 and r275891. They seem to cause PR28608."

2016-07-20 01:55:27 +00:00

LICM

Revert "Compute safety information in a much finer granularity."

2017-04-24 18:25:07 +00:00

LoadCombine

[LoadCombine] Avoid analysing dead basic blocks

2017-04-12 08:07:55 +00:00

LoadStoreVectorizer

Skip bitcasts while looking for GEP in LoadStoreVectorizer

2017-04-25 18:00:08 +00:00

LoopDataPrefetch

[PM] Port LoopDataPrefetch AArch64 tests to new pass manager

2016-08-22 12:59:58 +00:00

LoopDeletion

[Loop Deletion] Delete loops that are never executed

2017-05-03 11:47:11 +00:00

LoopDistribute

Move test of lazy BFI with ORE to a generic directory

2017-01-13 00:16:23 +00:00

LoopIdiom

The patch adds CTLZ idiom recognition.

2017-05-15 19:08:56 +00:00

LoopInterchange

[LoopInterchange] Track all dependencies, not just anti dependencies.

2016-09-21 19:16:47 +00:00

LoopLoadElim

[PM] Port LoopLoadElimination to the new pass manager and wire it into

2017-01-27 01:32:26 +00:00

LoopPredication

Loop predication expand both sides of the widened condition

2017-02-27 15:44:49 +00:00

LoopReroll

[LoopReroll] Make root-finding more aggressive.

2016-11-21 22:35:34 +00:00

LoopRotate

Cleanup tests to not share a DISubprogram between multiple Functions.

2017-05-04 16:24:31 +00:00

LoopSimplify

[BasicBlockUtils] Use getFirstNonPHIOrDbg to set debugloc for instructions created in SplitBlockPredecessors

2017-02-14 21:10:40 +00:00

LoopSimplifyCFG

LPM: Drop require<loops> from these tests, it's redundant. NFC

2016-05-10 18:28:10 +00:00

LoopStrengthReduce

ARM: handle post-indexed NEON ops where the offset isn't the access width.

2017-04-20 19:54:02 +00:00

LoopUnroll

[LoopUnroll] Fix a test. REQUIRE should be REQUIRES.

2017-05-12 15:30:58 +00:00

LoopUnswitch

[LoopUnswitch] Don't remove instructions with side effects.

2017-04-29 00:12:18 +00:00

LoopVectorize

Revert 303174, 303176, and 303178

2017-05-16 15:50:30 +00:00

LoopVersioning

[LAA] Correctly return a half-open range in expandBounds

2017-04-05 09:24:26 +00:00

LoopVersioningLICM

[LAA] Correctly return a half-open range in expandBounds

2017-04-05 09:24:26 +00:00

LowerAtomic

[PM] Port LowerAtomic to the new pass manager.

2016-05-13 22:52:35 +00:00

LowerExpectIntrinsic

[Profile] handle select instruction in 'expect' lowering

2016-09-02 22:03:40 +00:00

LowerGuardIntrinsic

[PM] Port LowerGuardIntrinsic to the new PM.

2016-07-28 22:08:41 +00:00

LowerInvoke

[PM] Port LowerInvoke to the new pass manager

2016-08-12 17:28:27 +00:00

LowerSwitch

LowerSwitch: Fix producing invalid IR on unreachable code

2017-04-21 23:54:12 +00:00

LowerTypeTests

Align all scalar numbers to LLVM_YAML_IS_FLOW_SEQUENCE_VECTOR

2017-04-04 06:02:32 +00:00

Mem2Reg

Add test coverage for mem2reg dbg.declare lowering.

2017-04-21 22:13:55 +00:00

MemCpyOpt

Add address space mangling to lifetime intrinsics

2017-04-10 20:18:21 +00:00

MergeFunc

MergeFunctions: Preserve debug info in thunks, under option -mergefunc-preserve-debug-info

2017-01-21 02:02:56 +00:00

MetaRenamer

[MetaRenamer] Don't rename library functions.

2017-03-23 23:21:07 +00:00

NameAnonGlobals

[ThinLTO] Ensure anonymous globals renamed even at -O0

2016-09-17 20:40:16 +00:00

NaryReassociate

Revert @llvm.assume with operator bundles (r289755-r289757)

2016-12-19 08:22:17 +00:00

NewGVN

Revert "[NewGVN] Replace predicate info leftovers."

2017-05-16 05:51:21 +00:00

ObjCARC

Replace hardcoded intrinsic list with speculatable attribute.

2017-05-03 02:26:10 +00:00

PartiallyInlineLibCalls

Add positive test for sqrt "partial inlining". NFC.

2017-01-04 21:24:56 +00:00

PGOProfile

Memory intrinsic value profile optimization: Avoid divide by 0

2017-04-28 14:30:54 +00:00

PhaseOrdering

Make globalaa-retained.ll test catching more cases.

2017-04-18 13:29:26 +00:00

PlaceSafepoints

[PlaceSafepoints] Don't call undef in test case; NFC

2016-06-25 01:40:54 +00:00

PreISelIntrinsicLowering

[PM] Port PreISelIntrinsicLowering to the new PM

2016-06-24 20:13:42 +00:00

PruneEH

[PruneEH] Be correct in the face IPO

2016-10-03 19:35:30 +00:00

Reassociate

[Reassociate] Add negated value of negative constant to the Duplicates list.

2017-02-23 18:49:03 +00:00

Reg2Mem

Move the personality function from LandingPadInst to Function

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

RewriteStatepointsForGC

[RSForGC] Handle vector GEPs

2017-03-17 00:55:53 +00:00

SafeStack

PR32382: Fix emitting complex DWARF expressions.

2017-04-18 01:21:53 +00:00

SampleProfile

Cleanup tests to not share a DISubprogram between multiple Functions.

2017-05-04 16:24:31 +00:00

Scalarizer

[Scalarizer] Handle scalar arguments in vector GEP

2017-03-31 06:29:49 +00:00

SCCP

[SCCP] Resolve indirect branch target when possible.

2017-04-10 00:33:25 +00:00

SeparateConstOffsetFromGEP

AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel

2017-03-21 21:39:51 +00:00

SimpleLoopUnswitch

[PM/Unswitch] Teach the new simple loop unswitch to handle loop

2017-05-12 02:19:59 +00:00

SimplifyCFG

[ValueTracking] Teach isSafeToSpeculativelyExecute() about the speculatable attribute

2017-04-28 21:13:09 +00:00

Sink

Add a testcase for r275581

2016-07-19 17:52:41 +00:00

SLPVectorizer

[SLP] Enable 64-bit wide vectorization on AArch64

2017-05-15 21:15:01 +00:00

SpeculativeExecution

Revert r301950: SpeculativeExecution: Stop using whitelist for costs

2017-05-10 12:30:07 +00:00

SROA

Allow DataLayout to specify addrspace for allocas.

2017-04-10 22:27:50 +00:00

StraightLineStrengthReduce

AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel

2017-03-21 21:39:51 +00:00

StripDeadPrototypes

[PM] Port StripDeadPrototypes to the new pass manager

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

StripSymbols

[StripDeadDebug/DIFinder] Track inlined SPs

2017-04-11 13:32:11 +00:00

StructurizeCFG

Revert "StructurizeCFG: Directly invert cmp instructions"

2017-04-24 20:25:01 +00:00

TailCallElim

Avoid tail recursion elimination across calls with operand bundles

2016-11-07 21:01:49 +00:00

ThinLTOBitcodeWriter

ThinLTOBitcodeWriter: keep comdats together, rename if leader is renamed

2017-04-12 01:43:07 +00:00

Util

PR32288: Describe a bool parameter's DWARF location with a simple register

2017-05-15 21:34:01 +00:00

WholeProgramDevirt

Align all scalar numbers to LLVM_YAML_IS_FLOW_SEQUENCE_VECTOR

2017-04-04 06:02:32 +00:00