Andrea Di Biagio 944d86558e [InstCombine] Teach how to fold a select into a cttz/ctlz with the 'is_zero_undef' flag. ...

This patch teaches the Instruction Combiner how to fold a cttz/ctlz followed by
a icmp plus select into a single cttz/ctlz with flag 'is_zero_undef' cleared.

Added test InstCombine/select-cmp-cttz-ctlz.ll.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227197 91177308-0d34-0410-b5e6-96231b3b80d8

2015-01-27 15:58:14 +00:00

..

ADCE

…

AddDiscriminators

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

AlignmentFromAssumptions

…

ArgumentPromotion

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

AtomicExpand/ARM

…

BBVectorize

This patch teaches IndVarSimplify to add nuw and nsw to certain kinds

2015-01-06 19:02:56 +00:00

BranchFolding

…

CodeExtractor

…

CodeGenPrepare

[GC] CodeGenPrep transform: simplify offsetable relocate

2015-01-14 23:27:07 +00:00

ConstantHoisting

…

ConstantMerge

…

ConstProp

…

CorrelatedValuePropagation

LazyValueInfo: Actually re-visit partially solved block-values in solveBlockValue()

2014-11-25 17:23:05 +00:00

DeadArgElim

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

DeadStoreElimination

IR: Make metadata typeless in assembly

2014-12-15 19:07:53 +00:00

EarlyCSE

Commoning of target specific load/store intrinsics in Early CSE.

2015-01-26 22:51:15 +00:00

FunctionAttrs

…

GCOVProfiling

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

GlobalDCE

Change the .ll syntax for comdats and add a syntactic sugar.

2015-01-06 22:55:16 +00:00

GlobalOpt

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

GVN

Add test cases for PRE w/volatile loads

2015-01-26 22:40:44 +00:00

IndVarSimplify

Fix PR22222

2015-01-15 01:46:09 +00:00

Inline

DebugInfo: Use distinct inlinedAt MDLocations to avoid separate inlined calls being coalesced

2015-01-21 22:57:29 +00:00

InstCombine

[InstCombine] Teach how to fold a select into a cttz/ctlz with the 'is_zero_undef' flag.

2015-01-27 15:58:14 +00:00

InstMerge

Added 5 more tests related to sink store revision 224247

2014-12-17 08:12:59 +00:00

InstSimplify

InstSimplify: Optimize away pointless comparisons

2014-12-20 03:04:38 +00:00

Internalize

…

IPConstantProp

…

IRCE

Fix crashes in IRCE caused by mismatched types

2015-01-22 08:29:18 +00:00

JumpThreading

ValueTracking: ComputeNumSignBits should tolerate misshapen phi nodes

2015-01-04 07:06:53 +00:00

LCSSA

[LCSSA] Handle PHI insertion in disjoint loops

2014-12-22 22:35:46 +00:00

LICM

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

LoadCombine

…

LoopDeletion

…

LoopIdiom

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

LoopReroll

…

LoopRotate

LoopRotate: Don't walk the uses of a Constant

2015-01-27 06:21:43 +00:00

LoopSimplify

…

LoopStrengthReduce

IR: Make metadata typeless in assembly

2014-12-15 19:07:53 +00:00

LoopUnroll

Use a smaller pragma unroll threshold to reduce test execution time.

2015-01-21 13:52:02 +00:00

LoopUnswitch

…

LoopVectorize

Fixed a bug in masked load/store in reversed loop.

2015-01-22 08:20:06 +00:00

LowerAtomic

…

LowerExpectIntrinsic

[PM] Port LowerExpectIntrinsic to the new pass manager.

2015-01-24 11:13:02 +00:00

LowerInvoke

…

LowerSwitch

LowerSwitch: replace unreachable default with popular case destination

2015-01-23 20:43:51 +00:00

Mem2Reg

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

MemCpyOpt

…

MergeFunc

IR: Make metadata typeless in assembly

2014-12-15 19:07:53 +00:00

MetaRenamer

…

ObjCARC

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

PartiallyInlineLibCalls

…

PhaseOrdering

…

PruneEH

…

Reassociate

Fix Reassociate handling of constant in presence of undef float

2015-01-16 03:00:58 +00:00

Reg2Mem

…

SampleProfile

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

Scalarizer

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

ScalarRepl

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

SCCP

…

SeparateConstOffsetFromGEP/NVPTX

…

SimplifyCFG

SimplifyCFG: Omit range checks for switch lookup tables when default is unreachable

2015-01-26 19:52:34 +00:00

Sink

…

SLPVectorizer

SLPVectorizer: fix wrong scheduling of atomic load/stores.

2015-01-26 09:07:04 +00:00

SROA

[SROA] Apply a somewhat heavy and unpleasant hammer to fix PR22093, an

2015-01-05 04:17:53 +00:00

StripSymbols

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

StructurizeCFG

StructurizeCFG: Use LoopInfo analysis for better loop detection

2014-12-03 04:28:32 +00:00

TailCallElim

Fix tail recursion elimination

2014-11-19 13:32:51 +00:00

TailDup

…

Util

[SwitchLowering] Handle destinations on multiple phi instructions

2014-12-02 18:31:53 +00:00