Andrea Di Biagio c53401ee91 [InstCombine] Fix wrong folding of constant comparisons involving ashr and negative values. ...

This patch fixes a bug in method InstCombiner::FoldCmpCstShrCst where we
wrongly computed the distance between the highest bits set of two negative
values.

This fixes PR21222.

Differential Revision: http://reviews.llvm.org/D5700


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219406 91177308-0d34-0410-b5e6-96231b3b80d8

2014-10-09 12:41:49 +00:00

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ADCE

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AddDiscriminators

Revert "Revert "DI: Fold constant arguments into a single MDString""

2014-10-03 20:01:09 +00:00

AlignmentFromAssumptions

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ArgumentPromotion

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2014-10-03 20:01:09 +00:00

AtomicExpand/ARM

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BBVectorize

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BranchFolding

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CodeExtractor

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CodeGenPrepare

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ConstantHoisting

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ConstantMerge

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ConstProp

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CorrelatedValuePropagation

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DeadArgElim

DebugInfo+DeadArgElimination: Ensure llvm::Function*s from debug info are updated even when DAE removes both varargs and non-varargs arguments on the same function.

2014-10-07 15:10:23 +00:00

DeadStoreElimination

Revert "Revert "DI: Fold constant arguments into a single MDString""

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DebugIR

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EarlyCSE

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FunctionAttrs

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GCOVProfiling

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2014-10-03 20:01:09 +00:00

GlobalDCE

GlobalDCE: Don't drop any COMDAT members

2014-10-07 07:07:19 +00:00

GlobalOpt

GlobalOpt: Don't drop unused memberes of a Comdat

2014-10-08 07:23:31 +00:00

GVN

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IndVarSimplify

[BUG][INDVAR] Fix for PR21014: wrong SCEV operands commuting for non-commutative instructions

2014-10-02 13:01:15 +00:00

Inline

Inliner: Non-local functions in COMDATs shouldn't be dropped

2014-10-08 19:32:32 +00:00

InstCombine

[InstCombine] Fix wrong folding of constant comparisons involving ashr and negative values.

2014-10-09 12:41:49 +00:00

InstMerge

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InstSimplify

InstSimplify: Don't allow (x srem y) urem y -> x srem y

2014-09-17 04:16:35 +00:00

Internalize

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IPConstantProp

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JumpThreading

Revert r215343.

2014-10-03 09:29:24 +00:00

LCSSA

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LICM

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LoadCombine

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LoopDeletion

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LoopIdiom

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LoopReroll

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LoopRotate

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LoopSimplify

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LoopStrengthReduce

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LoopUnroll

LoopUnroll: Create sub-loops in LoopInfo

2014-10-07 21:19:00 +00:00

LoopUnswitch

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LoopVectorize

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LowerAtomic

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LowerExpectIntrinsic

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LowerInvoke

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LowerSwitch

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Mem2Reg

Revert "Revert "DI: Fold constant arguments into a single MDString""

2014-10-03 20:01:09 +00:00

MemCpyOpt

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MergeFunc

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MetaRenamer

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ObjCARC

Revert "Revert "DI: Fold constant arguments into a single MDString""

2014-10-03 20:01:09 +00:00

PartiallyInlineLibCalls

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PhaseOrdering

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PruneEH

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Reassociate

Give the Reassociate pass a bit more flexibility and autonomy when optimizing expressions.

2014-10-05 23:41:26 +00:00

Reg2Mem

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SampleProfile

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Scalarizer

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ScalarRepl

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2014-10-03 20:01:09 +00:00

SCCP

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SeparateConstOffsetFromGEP/NVPTX

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SimplifyCFG

Two case switch to select optimization

2014-10-07 18:16:44 +00:00

Sink

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SLPVectorizer

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SROA

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StripSymbols

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StructurizeCFG

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TailCallElim

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TailDup

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Util

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