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llvm-project/llvm/test/Transforms
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Sanjay Patel e7c94ef1de [ValueTracking] determine sign of 0.0 from select when matching min/max FP 
In PR39475:
https://bugs.llvm.org/show_bug.cgi?id=39475
..we may fail to recognize/simplify fabs() in some cases because we do not 
canonicalize fcmp with a -0.0 operand.

Adding that canonicalization can cause regressions on min/max FP tests, so 
that's this patch: for the purpose of determining whether something is min/max, 
let the value returned by the select determine how we treat a 0.0 operand in the fcmp.

This patch doesn't actually change the -0.0 to +0.0. It just changes the analysis, so 
we don't fail to recognize equivalent min/max patterns that only differ in the 
signbit of 0.0.

Differential Revision: https://reviews.llvm.org/D54001

llvm-svn: 346097
 		2018-11-04 14:28:48 +00:00
..
ADCE [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
AddDiscriminators [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
AggressiveInstCombine [AggressiveInstCombine] avoid crashing on unsimplified code (PR37446) 2018-05-14 13:43:32 +00:00
AlignmentFromAssumptions
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ArgumentPromotion [ArgumentPromotion] don't break musttail invariant PR36543 2018-03-02 00:59:27 +00:00
AtomicExpand AMDGPU: Expand atomicrmw nand in IR 2018-10-02 03:50:56 +00:00
BDCE [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
BlockExtractor [hot-cold-split] Name split functions with ".cold" suffix 2018-10-24 18:53:47 +00:00
BranchFolding
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CallSiteSplitting [CallSiteSplitting] Add debug location to created PHI nodes. 2018-09-11 17:55:58 +00:00
CalledValuePropagation
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CodeExtractor [hot-cold-split] Name split functions with ".cold" suffix 2018-10-24 18:53:47 +00:00
CodeGenPrepare Fix a use-after-RAUW bug in large GEP splitting 2018-10-19 19:02:16 +00:00
ConstProp [X86] Add constant folding for AVX512 versions of scalar floating point to integer conversion intrinsics. 2018-08-12 22:09:54 +00:00
ConstantHoisting X86/TargetTransformInfo: Report div/rem constant immediate costs as TCC_Free 2018-10-11 23:14:35 +00:00
ConstantMerge
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Coroutines [Coroutines] PR34897: Fix incorrect elisions 2018-05-11 03:12:28 +00:00
CorrelatedValuePropagation [CVP] Extend tests to illustrate an old patch isn't needed 2018-08-24 21:56:43 +00:00
CrossDSOCFI
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DCE
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DeadArgElim [deadargelim] Update dbg.value of 'unused' parameters 2018-09-24 10:01:24 +00:00
DeadStoreElimination [BasicAA] Don't assume tail calls with byval don't alias allocas 2018-08-14 01:24:35 +00:00
DivRemPairs
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EarlyCSE [EarlyCSEwMemorySSA] Add MSSA verification and tests to make EarlyCSE failures easier to track. 2018-09-17 22:35:21 +00:00
EliminateAvailableExternally
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EntryExitInstrumenter [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
ExpandMemCmp/X86
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Float2Int
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ForcedFunctionAttrs
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FunctionAttrs [FuncAttrs] Remove "access range attributes" for read-none functions 2018-09-11 11:51:29 +00:00
FunctionImport New test requires x86-registered-target 2018-10-17 00:59:14 +00:00
GCOVProfiling [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
GVN [Local] Keep K's range if K does not move when combining metadata. 2018-10-27 16:53:45 +00:00
GVNHoist [MemorySSAUpdater] Avoid creating self-referencing MemoryDefs 2018-09-11 14:29:59 +00:00
GVNSink [Local] Make DoesKMove required for combineMetadata. 2018-08-24 11:40:04 +00:00
GlobalDCE
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GlobalMerge [GlobalMerge] Allow merging globals with explicit section markings. 2018-08-02 23:54:16 +00:00
GlobalOpt [DebugInfo][GlobalOpt] Fix -debugify for globalopt shrinking globals to booleans. 2018-10-23 16:35:51 +00:00
GlobalSplit
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GuardWidening [GuardWidening] Ignore guards with trivial conditions 2018-08-22 02:40:49 +00:00
HotColdSplit [HotColdSplitting] Allow outlining single-block cold regions 2018-10-29 19:15:39 +00:00
IPConstantProp Recommit r333268: [IPSCCP] Use PredicateInfo to propagate facts from cmp instructions. 2018-08-23 11:04:00 +00:00
IRCE Revert "[SCEV][NFC] Check NoWrap flags before lexicographical comparison of SCEVs" 2018-08-27 21:41:37 +00:00
IndVarSimplify [IndVars] Smart hard uses detection 2018-11-01 06:47:01 +00:00
IndirectBrExpand
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InferAddressSpaces AMDGPU: Fix tests using old number for constant address space 2018-09-10 02:54:25 +00:00
InferFunctionAttrs [LibCalls] Added returned attribute to libcalls 2018-08-23 05:18:23 +00:00
Inline [PM] keeping history when original SCC split and then merge into itself 2018-10-23 23:29:45 +00:00
InstCombine [ValueTracking] determine sign of 0.0 from select when matching min/max FP 2018-11-04 14:28:48 +00:00
InstMerge [DebugInfo][InstMerge] Fix -debugify for phi node created by -mldst-motion 2018-11-02 18:25:41 +00:00
InstNamer
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InstSimplify [InstSimplify] fold icmp based on range of abs/nabs (2nd try) 2018-11-01 14:07:39 +00:00
InterleavedAccess
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Internalize
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JumpThreading [Local] Keep K's range if K does not move when combining metadata. 2018-10-27 16:53:45 +00:00
LCSSA [DebugInfo][LCSSA] Rewrite pre-existing debug values outside loop 2018-10-16 08:06:48 +00:00
LICM [InstCombine] InstCombine and InstSimplify for minimum and maximum 2018-10-19 19:01:26 +00:00
LoadStoreVectorizer AMDGPU: Fix private handling for allowsMisalignedMemoryAccesses 2018-09-24 13:18:15 +00:00
LoopDataPrefetch [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
LoopDeletion
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LoopDistribute [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
LoopIdiom SCEV should forget all loops containing a deleted block. 2018-08-09 17:53:26 +00:00
LoopInstSimplify Update MemorySSA in LoopInstSimplify. 2018-08-22 20:05:21 +00:00
LoopInterchange [LoopInterchange] Remove support for inner-only reductions. 2018-11-01 19:25:00 +00:00
LoopLoadElim
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LoopPredication [LoopPredication] Add profitability check based on BPI 2018-03-22 16:03:59 +00:00
LoopReroll [LoopReroll] Rewrite induction variable rewriting. 2018-06-22 22:58:55 +00:00
LoopRotate Update MemorySSA in LoopRotate. 2018-10-24 22:46:45 +00:00
LoopSimplify [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
LoopSimplifyCFG [NFC] Add tests for loop-simplifycfg for further development 2018-10-31 11:28:23 +00:00
LoopStrengthReduce Revert r345114 2018-10-24 08:41:22 +00:00
LoopUnroll [LoopUnroll] allow customization for new-pass-manager version of LoopUnroll 2018-10-31 14:33:14 +00:00
LoopUnrollAndJam [UnJ] Improve explicit loop count checks 2018-08-11 07:37:31 +00:00
LoopUnswitch Update MemorySSA in LoopUnswitch. 2018-09-11 19:19:21 +00:00
LoopVectorize [SystemZ] Rework getInterleavedMemoryOpCost() 2018-11-02 17:15:36 +00:00
LoopVersioning Re-apply "[SCEV] Strengthen StrengthenNoWrapFlags (reapply r334428)." 2018-07-13 23:58:46 +00:00
LoopVersioningLICM
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LowerAtomic
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LowerExpectIntrinsic
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LowerGuardIntrinsic
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LowerInvoke
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LowerSwitch
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LowerTypeTests [LowerTypeTests] Limit when icall jumptable entries are emitted 2018-07-13 19:57:39 +00:00
Mem2Reg Improve ConvertDebugDeclareToDebugValue 2018-06-26 06:17:00 +00:00
MemCpyOpt Merge clang's isRepeatedBytePattern with LLVM's isBytewiseValue 2018-09-21 05:17:42 +00:00
MergeFunc [MergeFunctions] Fix merging of small weak functions 2018-05-15 11:31:07 +00:00
MergeICmps Pointer types were treated as zero-size by MergeICmps 2018-10-26 18:02:06 +00:00
MetaRenamer
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NameAnonGlobals
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NaryReassociate [NaryReassociate] Detect deleted instr with WeakVH 2018-05-24 06:09:02 +00:00
NewGVN [Local] Keep K's range if K does not move when combining metadata. 2018-10-27 16:53:45 +00:00
ObjCARC [ObjCARC] Prevent code motion into a catchswitch 2018-05-16 04:52:18 +00:00
PGOProfile Add a flag to remap manglings when reading profile data information. 2018-10-10 23:13:47 +00:00
PartiallyInlineLibCalls
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PhaseOrdering [PhaseOrdering] remove stale comments; NFC 2018-05-09 23:10:46 +00:00
PlaceSafepoints
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PreISelIntrinsicLowering
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PruneEH [PM][FunctionAttrs] add NoUnwind attribute inference to PostOrderFunctionAttrs pass 2018-03-23 21:46:16 +00:00
Reassociate [FPEnv] Convert more BinaryOperator::isFNeg(...) to m_FNeg(...) 2018-10-24 14:45:18 +00:00
Reg2Mem
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RewriteStatepointsForGC NFC - Various typo fixes in tests 2018-07-04 13:28:39 +00:00
SCCP SCCP: avoid caching DenseMap entry that might be invalidated. 2018-10-12 09:01:59 +00:00
SLPVectorizer [CostModel][X86] Add realistic vXi64 uitofp vXf64 costs 2018-10-25 13:06:20 +00:00
SROA [SROA] Use offset sizes from the DataLayout instead of the pointer siezes. 2018-10-30 11:15:04 +00:00
SafeStack SafeStack: Prevent OOB reads with mem intrinsics 2018-08-30 20:44:51 +00:00
SampleProfile Add a flag to remap manglings when reading profile data information. 2018-10-10 23:13:47 +00:00
ScalarizeMaskedMemIntrin/X86 [ScalarizeMaskedMemIntrin] Use MinAlign to calculate alignment for the scalar load/stores to handle element types that are byte-sized but not powers of 2. 2018-09-28 03:35:37 +00:00
Scalarizer [LoopVectorize] Loop vectorization for minimum and maximum 2018-10-19 21:11:43 +00:00
SeparateConstOffsetFromGEP [Split GEP] handle trunc() in separate-const-offset-from-gep pass. 2018-05-11 21:13:19 +00:00
SimpleLoopUnswitch [SimpleLoopUnswitch] Unswitch by experimental.guard intrinsics 2018-10-26 14:20:11 +00:00
SimplifyCFG [InstCombine] InstCombine and InstSimplify for minimum and maximum 2018-10-19 19:01:26 +00:00
Sink
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SpeculateAroundPHIs
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SpeculativeExecution
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StraightLineStrengthReduce [SLSR] use 'match' to simplify code; NFC 2018-10-23 14:07:39 +00:00
StripDeadPrototypes
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StripSymbols
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StructurizeCFG StructurizeCFG: Simplify inserted PHI nodes 2018-10-17 15:37:41 +00:00
SyntheticCountsPropagation
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TailCallElim [TailCallElim] Enable marking of calls with byval as tails 2018-10-08 18:03:40 +00:00
ThinLTOBitcodeWriter [ThinLTOBitcodeWriter] Emit summaries for regular LTO modules 2018-06-01 15:20:47 +00:00
Util Relax trivial cast requirements in CallPromotionUtils 2018-10-10 16:35:47 +00:00
WholeProgramDevirt [ThinLTO] Efficiency fix for writing type id records in per-module indexes 2018-09-25 20:14:40 +00:00