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llvm-mirror/test/Transforms
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Sanjay Patel 4b2cca44ae [InstSimplify] fold negation of sign-bit 
0 - X --> X, if X is 0 or the minimum signed value
0 - X --> 0, if X is 0 or the minimum signed value and the sub is NSW

I noticed this pattern might be created in the backend after the change from D25485, 
so we'll want to add a similar fold for the DAG.

The use of computeKnownBits in InstSimplify may be something to investigate if the
compile time of InstSimplify is noticeable. We could replace computeKnownBits with 
specific pattern matchers or limit the recursion.

Differential Revision: https://reviews.llvm.org/D25785

llvm-svn: 284649
2016-10-19 21:23:45 +00:00
..
ADCE
AddDiscriminators Do not assign new discriminator for all intrinsics. 2016-08-05 17:56:49 +00:00
AlignmentFromAssumptions
ArgumentPromotion
AtomicExpand
BBVectorize [ValueTracking] An improvement to IR ValueTracking on Non-negative Integers 2016-10-12 16:18:43 +00:00
BDCE
BranchFolding
CodeExtractor
CodeGenPrepare Update the section.ll to fix non-x86 failure. 2016-10-19 03:53:41 +00:00
ConstantHoisting
ConstantMerge
ConstProp
Coroutines [coroutines] Store an address of destroy OR cleanup part in the coroutine frame. 2016-10-08 00:22:50 +00:00
CorrelatedValuePropagation [CVP] Convert an AShr to a LShr if 1st operand is known to be nonnegative. 2016-10-12 13:41:38 +00:00
CountingFunctionInserter Add a counter-function insertion pass 2016-09-01 09:42:39 +00:00
CrossDSOCFI
DCE
DeadArgElim DeadArgElim: Don't mark swifterror arguments as unused 2016-09-21 15:29:08 +00:00
DeadStoreElimination [DSE] Don't remove stores made live by a call which unwinds. 2016-08-12 01:09:53 +00:00
EarlyCSE [EarlyCSE] Optionally use MemorySSA. NFC. 2016-08-31 19:24:10 +00:00
EliminateAvailableExternally
Float2Int
ForcedFunctionAttrs
FunctionAttrs [FunctionAttrs] Don't try to infer returned if it is already on an argument 2016-09-12 16:04:59 +00:00
FunctionImport [thinlto] Don't decay threshold for hot callsites 2016-09-30 03:01:17 +00:00
GCOVProfiling DebugInfo: New metadata representation for global variables. 2016-09-13 01:12:59 +00:00
GlobalDCE
GlobalMerge Teach llvm::StripDebugInfo() about global variable !dbg attachments. 2016-10-10 17:53:33 +00:00
GlobalOpt [GlobalOpt] Dead Eliminate declarations 2016-09-15 20:26:27 +00:00
GuardWidening
GVN [GVN/PRE] Hoist global values outside of loops. 2016-10-15 21:35:23 +00:00
GVNHoist commit back "GVN-hoist: fix store past load dependence analysis (PR30216, PR30499)" 2016-10-13 01:39:10 +00:00
IndVarSimplify [IndVarSimplify] Teach calculatePostIncRange to take guards into account 2016-10-19 19:43:54 +00:00
InferFunctionAttrs [InferAttributes] Don't access parameters that don't exist. 2016-09-20 23:10:31 +00:00
Inline [OptRemarks] Remove non-printable chars from function name 2016-10-08 04:47:20 +00:00
InstCombine [InstCombine] use m_APInt to allow sub with constant folds for splat vectors 2016-10-14 16:31:54 +00:00
InstMerge
InstSimplify [InstSimplify] fold negation of sign-bit 2016-10-19 21:23:45 +00:00
InterleavedAccess/X86 Add a pass to optimize patterns of vectorized interleaved memory accesses for 2016-10-14 18:20:41 +00:00
Internalize
IPConstantProp
IRCE [IRCE] Create llvm::Loop instances for cloned out loops 2016-08-14 01:04:46 +00:00
JumpThreading Jump threading: avoid trying to split edge into landingpad block (PR27840) 2016-10-03 18:18:04 +00:00
LCSSA
LICM
LoadCombine
LoadStoreVectorizer AMDGPU/SI: Don't allow unaligned scratch access 2016-10-14 18:10:39 +00:00
LoopDataPrefetch [PM] Port LoopDataPrefetch AArch64 tests to new pass manager 2016-08-22 12:59:58 +00:00
LoopDeletion
LoopDistribute
LoopIdiom Target independent codesize heuristics for Loop Idiom Recognition 2016-08-11 18:28:33 +00:00
LoopInterchange [LoopInterchange] Track all dependencies, not just anti dependencies. 2016-09-21 19:16:47 +00:00
LoopLoadElim
LoopReroll
LoopRotate
LoopSimplify [LoopSimplify] Rebuild LCSSA for the inner loop after separating nested loops. 2016-08-09 22:44:56 +00:00
LoopSimplifyCFG
LoopStrengthReduce Fix testcases failing after r284036 2016-10-12 20:39:33 +00:00
LoopUnroll Reapply "[LoopUnroll] Use the upper bound of the loop trip count to fullly unroll a loop" 2016-10-12 21:29:38 +00:00
LoopUnswitch
LoopVectorize [LV] Avoid emitting trivially dead instructions 2016-10-19 19:22:02 +00:00
LoopVersioning
LoopVersioningLICM [Loop Vectorizer] Fixed memory confilict checks. 2016-08-28 08:53:53 +00:00
LowerAtomic
LowerExpectIntrinsic [Profile] handle select instruction in 'expect' lowering 2016-09-02 22:03:40 +00:00
LowerGuardIntrinsic
LowerInvoke [PM] Port LowerInvoke to the new pass manager 2016-08-12 17:28:27 +00:00
LowerSwitch
LowerTypeTests Revert r277556. Add -lowertypetests-bitsets-level to control bitsets generation 2016-09-27 00:29:53 +00:00
Mem2Reg
MemCpyOpt [MemCpy] Add comments for r279769 2016-08-25 21:03:46 +00:00
MergeFunc
MetaRenamer
NameAnonGlobals [ThinLTO] Ensure anonymous globals renamed even at -O0 2016-09-17 20:40:16 +00:00
NaryReassociate
ObjCARC [ObjCARC] Traverse chain downwards to replace uses of argument passed to 2016-09-13 23:43:11 +00:00
PartiallyInlineLibCalls
PGOProfile [PGO] Create weak alias for the renamed Comdat function 2016-10-06 20:38:13 +00:00
PhaseOrdering
PlaceSafepoints
PreISelIntrinsicLowering
PruneEH [PruneEH] Be correct in the face IPO 2016-10-03 19:35:30 +00:00
Reassociate [Reassociate] Add test for PR28367. 2016-08-18 13:22:37 +00:00
Reg2Mem
RewriteStatepointsForGC [RS4GC] Strengthen coverage: add more tests 2016-10-07 20:34:00 +00:00
SafeStack [safestack] Use non-thread-local unsafe stack pointer for Contiki OS 2016-10-14 17:56:00 +00:00
SampleProfile Change the basic block weight calculation algorithm to use max instead of voting. 2016-09-21 16:26:51 +00:00
Scalarizer
SCCP [SCCP] Don't delete side-effecting instructions 2016-08-24 18:10:21 +00:00
SeparateConstOffsetFromGEP
SimplifyCFG Ignore debug info when making optimization decisions in SimplifyCFG. 2016-10-17 19:28:44 +00:00
Sink
SLPVectorizer [X86][SSE] Add lowering to cvttpd2dq/cvttps2dq for sitofp v2f64/2f32 to 2i32 2016-10-18 07:42:15 +00:00
SpeculativeExecution
SROA Fix revision 281960 2016-09-22 07:56:23 +00:00
StraightLineStrengthReduce
StripDeadPrototypes
StripSymbols [opt] Strip coverage if debug info is not present. 2016-10-17 20:05:35 +00:00
StructurizeCFG
TailCallElim
Util Conditionally eliminate library calls where the result value is not used 2016-10-18 21:36:27 +00:00
WholeProgramDevirt WholeProgramDevirt: generate more detailed and accurate remarks. 2016-08-11 19:09:02 +00:00