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Davide Italiano c78885818a [InstCombine] Fold branches with irrelevant conditions to a constant. 
InstCombine folds instructions with irrelevant conditions to undef.
This, as Nuno confirmed is a bug.
(see https://bugs.llvm.org/show_bug.cgi?id=33409#c1 )

Given the original motivation for the change is that of removing an
USE, we now fold to false instead (which reaches the same goal
without undesired side effects).

Fixes PR33409.

Differential Revision:  https://reviews.llvm.org/D36975

llvm-svn: 311540
2017-08-23 09:14:37 +00:00
..
AArch64
InstCombine: Move tests that use target intrinsics into subdirectories
2017-05-13 05:39:46 +00:00
AMDGPU
Update three tests I missed in r302979 and r302990
2017-05-18 00:58:06 +00:00
ARM
InstCombine: Move tests that use target intrinsics into subdirectories
2017-05-13 05:39:46 +00:00
NVPTX
Update three tests I missed in r302979 and r302990
2017-05-18 00:58:06 +00:00
PowerPC
InstCombine: Move tests that use target intrinsics into subdirectories
2017-05-13 05:39:46 +00:00
X86
[X86][InstCombine] Add some simplifications for BZHI intrinsics
2017-07-31 18:52:15 +00:00
2003-05-26-CastMiscompile.ll
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2003-05-27-ConstExprCrash.ll
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2003-06-05-BranchInvertInfLoop.ll
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2003-07-21-ExternalConstant.ll
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2003-08-12-AllocaNonNull.ll
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2003-09-09-VolatileLoadElim.ll
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2003-10-29-CallSiteResolve.ll
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2003-11-03-VarargsCallBug.ll
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2004-01-13-InstCombineInvokePHI.ll
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2004-02-23-ShiftShiftOverflow.ll
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2004-03-13-InstCombineInfLoop.ll
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2004-04-04-InstCombineReplaceAllUsesWith.ll
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2004-05-07-UnsizedCastLoad.ll
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2004-07-27-ConstantExprMul.ll
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2004-08-09-RemInfLoop.ll
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2004-08-10-BoolSetCC.ll
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2004-09-20-BadLoadCombine2.ll
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2004-09-20-BadLoadCombine.ll
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2004-09-28-BadShiftAndSetCC.ll
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2004-11-22-Missed-and-fold.ll
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2004-11-27-SetCCForCastLargerAndConstant.ll
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2004-12-08-RemInfiniteLoop.ll
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2005-03-04-ShiftOverflow.ll
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2005-04-07-UDivSelectCrash.ll
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2005-06-15-DivSelectCrash.ll
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2005-06-15-ShiftSetCCCrash.ll
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2005-06-16-RangeCrash.ll
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2005-07-07-DeadPHILoop.ll
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2006-02-13-DemandedMiscompile.ll
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2006-02-28-Crash.ll
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2006-03-30-ExtractElement.ll
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2006-04-28-ShiftShiftLongLong.ll
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2006-05-04-DemandedBitCrash.ll
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2006-09-15-CastToBool.ll
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2006-10-19-SignedToUnsignedCastAndConst-2.ll
…
2006-10-20-mask.ll
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2006-10-26-VectorReassoc.ll
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2006-11-10-ashr-miscompile.ll
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2006-12-01-BadFPVectorXform.ll
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2006-12-05-fp-to-int-ext.ll
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2006-12-08-Phi-ICmp-Op-Fold.ll
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2006-12-08-Select-ICmp.ll
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2006-12-15-Range-Test.ll
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2006-12-23-Select-Cmp-Cmp.ll
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2007-01-13-ExtCompareMiscompile.ll
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2007-01-14-FcmpSelf.ll
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2007-01-18-VectorInfLoop.ll
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2007-02-01-LoadSinkAlloca.ll
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2007-02-07-PointerCast.ll
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2007-02-23-PhiFoldInfLoop.ll
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2007-03-13-CompareMerge.ll
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2007-03-19-BadTruncChangePR1261.ll
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2007-03-21-SignedRangeTest.ll
[InstCombine] allow icmp (div X, Y), C folds for splat constant vectors
2016-08-31 21:57:21 +00:00
2007-03-25-BadShiftMask.ll
update to use FileCheck and auto-generate checks
2016-08-09 19:42:52 +00:00
2007-03-25-DoubleShift.ll
…
2007-03-26-BadShiftMask.ll
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2007-04-08-SingleEltVectorCrash.ll
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2007-05-10-icmp-or.ll
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2007-05-14-Crash.ll
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2007-05-18-CastFoldBug.ll
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2007-06-06-AshrSignBit.ll
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2007-06-21-DivCompareMiscomp.ll
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2007-08-02-InfiniteLoop.ll
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2007-09-10-AliasConstFold.ll
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2007-09-17-AliasConstFold2.ll
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2007-10-10-EliminateMemCpy.ll
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2007-10-12-Crash.ll
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2007-10-28-stacksave.ll
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2007-10-31-RangeCrash.ll
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2007-10-31-StringCrash.ll
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2007-11-07-OpaqueAlignCrash.ll
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2007-11-15-CompareMiscomp.ll
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2007-11-25-CompatibleAttributes.ll
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2007-12-10-ConstFoldCompare.ll
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2007-12-12-GEPScale.ll
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2007-12-16-AsmNoUnwind.ll
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2007-12-18-AddSelCmpSub.ll
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2007-12-28-IcmpSub2.ll
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2008-01-06-BitCastAttributes.ll
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2008-01-06-CastCrash.ll
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2008-01-06-VoidCast.ll
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2008-01-13-AndCmpCmp.ll
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2008-01-14-VarArgTrampoline.ll
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2008-01-21-MismatchedCastAndCompare.ll
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2008-01-21-MulTrunc.ll
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2008-01-27-FloatSelect.ll
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2008-02-13-MulURem.ll
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2008-02-16-SDivOverflow2.ll
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2008-02-23-MulSub.ll
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2008-02-28-OrFCmpCrash.ll
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2008-03-13-IntToPtr.ll
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2008-04-22-ByValBitcast.ll
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2008-04-28-VolatileStore.ll
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2008-04-29-VolatileLoadDontMerge.ll
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2008-04-29-VolatileLoadMerge.ll
…
2008-05-08-LiveStoreDelete.ll
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2008-05-08-StrLenSink.ll
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2008-05-09-SinkOfInvoke.ll
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2008-05-17-InfLoop.ll
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2008-05-18-FoldIntToPtr.ll
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2008-05-22-IDivVector.ll
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2008-05-22-NegValVector.ll
[InstCombine] Support weird size element types in dyn_castNegVal.
2017-04-11 05:42:47 +00:00
2008-05-23-CompareFold.ll
…
2008-05-31-AddBool.ll
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2008-05-31-Bools.ll
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2008-06-05-ashr-crash.ll
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2008-06-08-ICmpPHI.ll
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2008-06-13-InfiniteLoopStore.ll
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2008-06-13-ReadOnlyCallStore.ll
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2008-06-19-UncondLoad.ll
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2008-06-21-CompareMiscomp.ll
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2008-06-24-StackRestore.ll
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2008-07-08-ShiftOneAndOne.ll
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2008-07-08-SubAnd.ll
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2008-07-08-VolatileLoadMerge.ll
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2008-07-09-SubAndError.ll
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2008-07-10-CastSextBool.ll
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2008-07-11-RemAnd.ll
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2008-07-13-DivZero.ll
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2008-07-16-fsub.ll
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2008-08-05-And.ll
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2008-09-02-VectorCrash.ll
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2008-10-11-DivCompareFold.ll
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2008-10-23-ConstFoldWithoutMask.ll
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2008-11-01-SRemDemandedBits.ll
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2008-11-08-FCmp.ll
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2008-11-27-IDivVector.ll
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2008-11-27-MultiplyIntVec.ll
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2008-11-27-UDivNegative.ll
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2008-12-17-SRemNegConstVec.ll
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2009-01-05-i128-crash.ll
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2009-01-08-AlignAlloca.ll
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2009-01-16-PointerAddrSpace.ll
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2009-01-19-fmod-constant-float-specials.ll
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2009-01-19-fmod-constant-float.ll
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2009-01-24-EmptyStruct.ll
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2009-01-31-InfIterate.ll
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2009-01-31-Pressure.ll
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2009-02-04-FPBitcast.ll
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2009-02-11-NotInitialized.ll
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2009-02-20-InstCombine-SROA.ll
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2009-02-21-LoadCST.ll
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2009-02-25-CrashZeroSizeArray.ll
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2009-03-18-vector-ashr-crash.ll
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2009-03-24-InfLoop.ll
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2009-04-07-MulPromoteToI96.ll
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2009-05-23-FCmpToICmp.ll
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2009-06-11-StoreAddrSpace.ll
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2009-06-16-SRemDemandedBits.ll
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2009-07-02-MaskedIntVector.ll
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2009-12-17-CmpSelectNull.ll
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2010-01-28-NegativeSRem.ll
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2010-03-03-ExtElim.ll
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2010-05-30-memcpy-Struct.ll
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2010-11-01-lshr-mask.ll
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2010-11-21-SizeZeroTypeGEP.ll
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2010-11-23-Distributed.ll
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2011-02-14-InfLoop.ll
…
2011-03-08-SRemMinusOneBadOpt.ll
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2011-05-02-VectorBoolean.ll
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2011-05-13-InBoundsGEP.ll
…
2011-05-28-swapmulsub.ll
Reapply "InstCombine: Reduce trunc (shl x, K) width."
2016-09-13 19:43:57 +00:00
2011-06-13-nsw-alloca.ll
…
2011-09-03-Trampoline.ll
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2011-10-07-AlignPromotion.ll
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2012-3-15-or-xor-constant.ll
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2012-6-7-vselect-bitcast.ll
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2012-01-11-OpaqueBitcastCrash.ll
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2012-02-13-FCmp.ll
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2012-02-28-ICmp.ll
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2012-03-10-InstCombine.ll
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2012-04-24-vselect.ll
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2012-04-30-SRem.ll
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2012-05-28-select-hang.ll
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2012-06-06-LoadOfPHIs.ll
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2012-07-25-LoadPart.ll
opt: Rename -default-data-layout flag to -data-layout and make it always override the layout.
2017-02-17 17:36:52 +00:00
2012-07-30-addrsp-bitcast.ll
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2012-08-28-udiv_ashl.ll
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2012-09-17-ZeroSizedAlloca.ll
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2012-10-25-vector-of-pointers.ll
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2012-12-14-simp-vgep.ll
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2013-03-05-Combine-BitcastTy-Into-Alloca.ll
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2017-07-07-UMul-ZExt.ll
[InstCombine] Don't violate dominance when replacing instructions.
2017-07-16 18:56:30 +00:00
abs_abs.ll
[ValueTracking] fix matchSelectPattern to allow vector splat folds of min/max/abs/nabs
2016-10-27 15:26:10 +00:00
abs-1.ll
…
add2.ll
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add3.ll
…
add-shrink.ll
…
add-sitofp.ll
Fix for PR32740 - Invalid floating type, unreachable between r300969 and r301029
2017-04-22 07:24:52 +00:00
add.ll
[InstCombine] Support (X ^ C1) & C2 --> (X & C2) ^ (C1&C2) for vector splats.
2017-08-06 23:11:49 +00:00
addnegneg.ll
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AddOverFlow.ll
[InstCombine][KnownBits] Use KnownBits better to detect nsw adds
2017-05-03 23:22:46 +00:00
addrspacecast.ll
…
adjust-for-minmax.ll
[InstCombine] canonicalize min/max constant to select's false value
2016-11-21 22:04:14 +00:00
alias-recursion.ll
…
align-2d-gep.ll
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align-addr.ll
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align-attr.ll
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align-external.ll
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all-bits-shift.ll
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alloca.ll
[InstCombine] Teach isAllocSiteRemovable to look through addrspacecasts
2017-05-25 15:14:48 +00:00
allocsize-32.ll
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allocsize.ll
[Analysis] Ignore nobuiltin on allocsize function calls.
2016-12-27 06:32:14 +00:00
and2.ll
[InstCombine] improve (1 << x) & 1 --> zext(x == 0) folding
2017-07-15 17:26:01 +00:00
and-compare.ll
[InstCombine] use m_APInt to allow icmp (and X, Y), C folds for splat constant vectors
2016-08-28 18:18:00 +00:00
and-fcmp.ll
…
and-or-and.ll
…
and-or-icmps.ll
[InstSimplify] use ConstantRange to simplify or-of-icmps
2017-05-07 15:11:40 +00:00
and-or-not.ll
[InstCombine] Fold (a | b) ^ (~a | ~b) --> ~(a ^ b) and (a & b) ^ (~a & ~b) --> ~(a ^ b)
2017-07-02 01:15:51 +00:00
and-or.ll
[InstCombine] allow mask hoisting transform for vector types
2017-07-31 21:01:53 +00:00
and-xor-merge.ll
…
and-xor-or.ll
…
and.ll
[InstCombine] Improve the expansion in SimplifyUsingDistributiveLaws to handle cases where one side doesn't simplify, but the other side resolves to an identity value
2017-07-15 21:49:49 +00:00
apint-add.ll
[InstCombine] fold add(zext(xor X, C), C) --> sext X when C is INT_MIN in the source type
2016-07-19 22:09:34 +00:00
apint-and-compare.ll
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apint-and-or-and.ll
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apint-and-xor-merge.ll
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apint-and.ll
[InstCombine] use FileCheck and auto-generate checks; NFC
2017-05-01 14:20:30 +00:00
apint-call-cast-target.ll
…
apint-cast-and-cast.ll
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apint-cast-cast-to-and.ll
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apint-cast.ll
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apint-div1.ll
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apint-div2.ll
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apint-mul1.ll
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apint-mul2.ll
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apint-not.ll
[InstCombine] consolidate tests for DeMorgan folds; NFC
2017-04-30 18:57:12 +00:00
apint-or.ll
[InstCombine] consolidate tests for DeMorgan folds; NFC
2017-04-30 18:57:12 +00:00
apint-rem1.ll
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apint-rem2.ll
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apint-select.ll
[InstCombine] LogicOpc (zext X), C --> zext (LogicOpc X, C) (PR28476)
2016-07-21 00:24:18 +00:00
apint-shift-simplify.ll
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apint-shift.ll
[InstCombine] allow shl demanded bits folds with splat constants
2017-04-20 21:33:02 +00:00
apint-shl-trunc.ll
[InstCombine] use m_APInt to allow icmp (and (sh X, Y), C2), C1 folds for splat constant vectors
2016-09-07 22:33:03 +00:00
apint-sub.ll
[InstCombine] fix operand-complexity-based canonicalization (PR28296)
2017-02-03 21:43:34 +00:00
apint-xor1.ll
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apint-xor2.ll
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assoc-cast-assoc.ll
[InstCombine] LogicOpc (zext X), C --> zext (LogicOpc X, C) (PR28476)
2016-07-21 00:24:18 +00:00
assume2.ll
[InstCombine] don't use DeMorgan's Law on integer constants (2nd try)
2017-05-02 15:31:40 +00:00
assume-loop-align.ll
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assume-redundant.ll
Revert @llvm.assume with operator bundles (r289755-r289757)
2016-12-19 08:22:17 +00:00
assume.ll
[ValueTracking] recognize a 'not' of an assumed condition as false
2017-01-17 18:15:49 +00:00
atomic.ll
[PR29121] Don't fold if it would produce atomic vector loads or stores
2016-12-01 20:17:06 +00:00
badmalloc.ll
…
binop-cast.ll
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bit-checks.ll
[InstCombine] update to use FileCheck
2016-09-28 19:10:16 +00:00
bitcast-alias-function.ll
…
bitcast-bigendian.ll
[InstCombine] reverse bitcast + bitwise-logic canonicalization (PR33138)
2017-06-22 15:46:54 +00:00
bitcast-bitcast.ll
…
bitcast-sext-vector.ll
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bitcast-store.ll
InstCombine: Don't combine loads/stores from swifterror to a new type
2016-09-10 18:14:57 +00:00
bitcast-vec-canon.ll
[InstCombine] auto-generate test checks; NFC
2017-05-23 17:51:22 +00:00
bitcast.ll
[InstCombine] reverse bitcast + bitwise-logic canonicalization (PR33138)
2017-06-22 15:46:54 +00:00
bitcount.ll
…
bitreverse-fold.ll
[Analysis] bitreverse(undef) returns undef
2017-03-19 04:40:42 +00:00
bitreverse-hang.ll
…
bitreverse-known-bits.ll
[ValueTracking] Make sure we keep range metadata information when calculating known bits for calls to bitreverse intrinsic.
2017-03-22 07:22:49 +00:00
bittest.ll
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branch.ll
[InstCombine] Fold branches with irrelevant conditions to a constant.
2017-08-23 09:14:37 +00:00
broadcast.ll
[InstCombine] Canonicalize insert splat sequences into an insert + shuffle
2016-12-28 00:18:08 +00:00
bswap-fold.ll
[InstCombine] Add single use checks to SimplifyBSwap to ensure we are really saving instructions
2017-07-06 16:24:21 +00:00
bswap-known-bits.ll
…
bswap.ll
…
builtin-object-size-offset.ll
Add address space mangling to lifetime intrinsics
2017-04-10 20:18:21 +00:00
builtin-object-size-ptr.ll
Add address space mangling to lifetime intrinsics
2017-04-10 20:18:21 +00:00
call2.ll
…
call_nonnull_arg.ll
[ValueTracking] use nonnull argument attribute to eliminate null checks
2017-02-12 15:35:34 +00:00
call-cast-attrs.ll
Simplify test for sret attribute in instcombine
2017-04-19 23:17:47 +00:00
call-cast-target-inalloca.ll
…
call-cast-target.ll
…
call-guard.ll
[InstCombine] Allow InstCombine to merge adjacent guards
2017-02-01 16:34:55 +00:00
call-intrinsics.ll
…
call.ll
Don't remove side effecting instructions due to ConstantFoldInstruction
2016-07-22 04:54:44 +00:00
canonicalize_branch.ll
[InstCombine] add isCanonicalPredicate() helper function and use it; NFCI
2017-05-17 14:21:19 +00:00
cast_ptr.ll
…
cast-call-combine-prof.ll
[InstCombine] Fix !prof metadata preservation for invokes
2017-04-13 20:26:38 +00:00
cast-call-combine.ll
…
cast-callee-deopt-bundles.ll
…
cast-int-fcmp-eq-0.ll
…
cast-mul-select.ll
…
cast-set.ll
auto-ggenerate checks
2016-07-16 16:24:06 +00:00
cast.ll
[InstCombine] Fix a weakness in canEvaluateZExtd around 'and' instructions
2017-08-21 16:04:11 +00:00
ceil.ll
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clamp-to-minmax.ll
[InstCombine] Canonicalize clamp of float types to minmax in fast mode.
2017-08-04 12:22:17 +00:00
cmp-intrinsic.ll
[InstCombine] move and improve tests for cmp-intrinsic; NFC
2017-07-03 14:07:40 +00:00
compare-3way.ll
[InstCombine] Recognize and simplify three way comparison idioms
2017-06-23 13:41:45 +00:00
compare-alloca.ll
Add address space mangling to lifetime intrinsics
2017-04-10 20:18:21 +00:00
compare-signs.ll
[InstCombine] use m_APInt to allow icmp (trunc X, Y), C folds for splat constant vectors
2016-08-18 20:28:54 +00:00
compare-udiv.ll
[InstCombine] use m_APInt to allow icmp (udiv X, Y), C folds for splat constant vectors
2016-08-18 17:55:59 +00:00
compare-unescaped.ll
[InstCombine] fix operand-complexity-based canonicalization (PR28296)
2017-02-03 21:43:34 +00:00
consecutive-fences.ll
Enhance synchscope representation
2017-07-11 22:23:00 +00:00
constant-expr-datalayout.ll
…
constant-fold-address-space-pointer.ll
…
constant-fold-alias.ll
…
constant-fold-compare.ll
…
constant-fold-gep.ll
…
constant-fold-iteration.ll
[InstCombine] Prevent InstCombine from triggering an extra iteration if something changed in the initial Worklist creation
2017-05-13 06:56:04 +00:00
constant-fold-libfunc.ll
Add strictfp attribute to prevent unwanted optimizations of libm calls
2017-08-14 21:15:13 +00:00
constant-fold-math.ll
[InstCombine] Add frem constant folding test (PR3316)
2017-04-19 21:09:19 +00:00
convergent.ll
Fix some broken CHECK lines.
2017-01-22 20:28:56 +00:00
copysign.ll
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cos-1.ll
…
cos-2.ll
…
cos-intrinsic.ll
InstCombine: Fold cos(-x) -> cos(x)
2017-01-04 22:49:03 +00:00
CPP_min_max.ll
…
crash.ll
…
ctpop.ll
[InstCombine] Add range metadata to cttz/ctlz/ctpop intrinsic calls based on known bits
2017-06-21 16:32:35 +00:00
dce-iterate.ll
…
deadcode.ll
Add address space mangling to lifetime intrinsics
2017-04-10 20:18:21 +00:00
debug-line.ll
…
debuginfo-dce.ll
Remove the obsolete offset parameter from @llvm.dbg.value
2017-07-28 20:21:02 +00:00
debuginfo-skip.ll
Remove the obsolete offset parameter from @llvm.dbg.value
2017-07-28 20:21:02 +00:00
debuginfo.ll
…
default-alignment.ll
…
demand_shrink_nsw.ll
[InstCombine][KnownBits] Use KnownBits better to detect nsw adds
2017-05-03 23:22:46 +00:00
demorgan.ll
[InstCombine] fix auto-generated FileCheck-captured variable refs
2017-05-10 14:40:04 +00:00
disable-simplify-libcalls.ll
…
distribute.ll
…
div-shift-crash.ll
…
div-shift.ll
[InstCombine] Add support for turning vector sdiv into udiv.
2017-04-17 01:51:19 +00:00
div.ll
[InstCombine] Simplify 1/X for vectors.
2017-04-17 03:41:47 +00:00
double-float-shrink-1.ll
…
double-float-shrink-2.ll
InstCombine: Check source value precision when reducing cast intrinsic
2017-03-20 21:59:24 +00:00
early_constfold_changes_IR.ll
[InstCombine] Make sure AddReachableCodeToWorklist sets MadeIRChange
2017-06-19 18:00:27 +00:00
early_dce_clobbers_callgraph.ll
[InstCombine] Make sure AddReachableCodeToWorklist sets MadeIRChange
2017-06-19 18:00:27 +00:00
element-atomic-memcpy-to-loads.ll
[Atomics] Rename and change prototype for atomic memcpy intrinsic
2017-06-16 14:43:59 +00:00
element-atomic-memintrins.ll
Add element-atomic mem intrinsic canary tests for InstCombine.
2017-07-18 01:06:47 +00:00
enforce-known-alignment.ll
…
err-rep-cold.ll
…
exact.ll
[InstCombine] use m_APInt to allow ashr folds for vectors with splat constants
2017-01-15 16:38:19 +00:00
exp2-1.ll
…
exp2-2.ll
…
ExtractCast.ll
…
extractinsert-tbaa.ll
[InstCombine] Retain TBAA when narrowing memory accesses
2017-06-28 23:36:40 +00:00
extractvalue.ll
…
fabs-libcall.ll
SimplifyLibCalls: Replace fabs libcalls with intrinsics
2017-01-17 00:10:40 +00:00
fabs.ll
SimplifyLibCalls: Replace fabs libcalls with intrinsics
2017-01-17 00:10:40 +00:00
fast-math-scalarization.ll
…
fast-math.ll
[InstCombine] Make sure we preserve fast math flags when folding fp instructions into phi nodes
2017-04-10 07:00:10 +00:00
fcmp-select.ll
…
fcmp-special.ll
…
fcmp.ll
[InstCombine] remove duplicate test; NFC
2017-04-09 21:45:52 +00:00
fdiv.ll
InstCombine: fdiv -x, -y -> fdiv x, y
2017-01-10 23:08:54 +00:00
ffs-1.ll
[InstCombine] narrow truncated add/sub/mul with constant
2017-08-04 22:30:34 +00:00
float-shrink-compare.ll
Do not translate rint into nearbyint, but truncate it like nearbyint.
2017-03-31 19:58:07 +00:00
fls.ll
[InstCombine] narrow truncated add/sub/mul with constant
2017-08-04 22:30:34 +00:00
fma.ll
InstCombine: Canonicalize fast fmuladd to fmul + fadd
2017-02-16 18:46:24 +00:00
fmul.ll
…
fneg-ext.ll
…
fold-bin-operand.ll
…
fold-calls.ll
…
fold-fops-into-selects.ll
…
fold-phi-load-metadata.ll
Don't passively concatenate MDNodes
2016-08-16 18:48:34 +00:00
fold-phi.ll
…
fold-sqrt-sqrtf.ll
…
fold-vector-select.ll
…
fold-vector-zero.ll
…
fp-ret-bitcast.ll
…
fpcast.ll
…
fpextend_x86.ll
…
fpextend.ll
…
fprintf-1.ll
…
fputs-1.ll
…
fputs-opt-size.ll
…
fsub.ll
InstCombine: Fix assert when reassociating fsub with undef
2017-04-24 17:24:37 +00:00
fwrite-1.ll
…
gc.relocate.ll
…
gep-addrspace.ll
…
gep-sext.ll
…
gep-vector.ll
[ConstantFold] Get the correct vector type when folding a getelementptr.
2016-10-28 00:53:16 +00:00
gepgep.ll
…
gepphigep.ll
…
getelementptr-folding.ll
…
getelementptr.ll
[InstCombine] Correct the check for vector GEPs
2017-03-29 18:23:08 +00:00
hoist_instr.ll
…
icmp-add.ll
[InstCombine] add nsw/nuw X, signbit --> or X, signbit
2017-02-18 22:20:09 +00:00
icmp-div-constant.ll
fix FileCheck variables for test added with r280677
2016-09-05 23:49:32 +00:00
icmp-logical.ll
[InstCombine] convert bitwise (in)equality checks to logical ops (PR32401)
2017-07-14 15:09:49 +00:00
icmp-range.ll
…
icmp-shl-nsw.ll
[InstCombine] icmp Pred (shl nsw X, C1), C0 --> icmp Pred X, C0 >> C1
2017-01-19 16:12:10 +00:00
icmp-shl-nuw.ll
[InstCombine] Fold nuw left-shifts in ugt/ule comparisons.
2016-11-01 19:19:29 +00:00
icmp-shr.ll
[InstCombine] allow icmp (shr/shl) folds for vectors
2016-09-15 21:35:30 +00:00
icmp-vec.ll
[InstCombine] use m_APInt to allow icmp ult X, C folds for splat constant vectors
2016-09-09 21:59:37 +00:00
icmp-xor-signbit.ll
[InstCombine] reverse bitcast + bitwise-logic canonicalization (PR33138)
2017-06-22 15:46:54 +00:00
icmp.ll
[InstCombine] look through bswap/bitreverse for equality comparisons
2017-07-02 14:34:50 +00:00
idioms.ll
…
indexed-gep-compares.ll
[InstCombine] Make sure that LHS and RHS have the same type in
2017-01-31 14:04:15 +00:00
inline-intrinsic-assert.ll
…
insert-const-shuf.ll
[InstCombine] Fix for PR29124: reduce insertelements to shufflevector
2016-09-23 09:14:08 +00:00
insert-extract-shuffle.ll
[InstCombine] Fix extractelement use before def
2017-06-05 09:18:10 +00:00
insert-val-extract-elem.ll
…
IntPtrCast.ll
…
intrinsics.ll
[InstCombine] move and improve tests for cmp-intrinsic; NFC
2017-07-03 14:07:40 +00:00
invariant.ll
Revert "Revert "Invariant start/end intrinsics overloaded for address space""
2016-08-13 23:31:24 +00:00
invoke.ll
…
isascii-1.ll
…
isdigit-1.ll
…
JavaCompare.ll
…
known_align.ll
…
LandingPadClauses.ll
…
lifetime-asan.ll
Add address space mangling to lifetime intrinsics
2017-04-10 20:18:21 +00:00
lifetime.ll
Add address space mangling to lifetime intrinsics
2017-04-10 20:18:21 +00:00
load3.ll
…
load_combine_aa.ll
…
load-bitcast32.ll
…
load-bitcast64.ll
…
load-cmp.ll
opt: Rename -default-data-layout flag to -data-layout and make it always override the layout.
2017-02-17 17:36:52 +00:00
load-combine-metadata-2.ll
…
load-combine-metadata-3.ll
…
load-combine-metadata-4.ll
…
load-combine-metadata.ll
[Verifier] Add verification for TBAA metadata
2016-12-11 20:07:15 +00:00
load-select.ll
…
load.ll
Don't combine stores to a swifterror pointer operand to a different type
2017-01-31 17:53:49 +00:00
loadstore-alignment.ll
Fix known zero bits for addrspacecast.
2016-11-21 15:42:31 +00:00
loadstore-metadata.ll
[Verifier] Add verification for TBAA metadata
2016-12-11 20:07:15 +00:00
log-pow-nofastmath.ll
…
log-pow.ll
Don't remove side effecting instructions due to ConstantFoldInstruction
2016-07-22 04:54:44 +00:00
logical-select.ll
[InstCombine] Support sext in foldLogicCastConstant
2017-08-02 20:25:56 +00:00
lshr-phi.ll
…
lshr.ll
[InstCombine] narrow lshr with constant
2017-08-04 15:42:47 +00:00
malloc-free-delete.ll
Add address space mangling to lifetime intrinsics
2017-04-10 20:18:21 +00:00
masked_intrinsics.ll
Support arbitrary address space pointers in masked gather/scatter intrinsics.
2017-05-03 12:28:54 +00:00
max-of-nots.ll
[InstCombine] canonicalize icmp predicate feeding select
2017-06-27 17:53:22 +00:00
maxnum.ll
…
mem-gep-zidx.ll
…
mem-par-metadata-memcpy.ll
[InstCombine] Preserve llvm.mem.parallel_loop_access metadata when replacing
2016-09-04 07:49:39 +00:00
memchr.ll
SimplifyLibCalls: Optimize wcslen
2017-05-19 22:37:09 +00:00
memcmp-1.ll
[InstCombine] auto-generate better checks; NFC
2017-04-09 15:44:59 +00:00
memcmp-2.ll
…
memcmp-constant-fold.ll
[LibCallSimplifier] try harder to fold memcmp with constant arguments (2nd try)
2017-08-21 19:13:14 +00:00
memcpy_chk-1.ll
…
memcpy_chk-2.ll
…
memcpy-1.ll
Add strictfp attribute to prevent unwanted optimizations of libm calls
2017-08-14 21:15:13 +00:00
memcpy-2.ll
[InstCombine] regenerate test checks; NFC
2017-08-10 15:07:37 +00:00
memcpy-addrspace.ll
[InstCombine] Fix bug in pointer replacement
2017-02-24 20:27:25 +00:00
memcpy-from-global.ll
[InstCombine] Don't replace allocas with smaller globals
2017-06-24 01:35:19 +00:00
memcpy-to-load.ll
[InstCombine] add memcpy expansion tests with potential DL dependency; NFC
2017-08-10 15:37:26 +00:00
memcpy.ll
[InstCombine] regenerate test checks, add comments; NFC
2017-08-10 14:51:42 +00:00
memmove_chk-1.ll
…
memmove_chk-2.ll
…
memmove-1.ll
…
memmove-2.ll
…
memmove.ll
Explicitly check for presence of correct results in instcombine memmove test
2017-06-29 14:17:50 +00:00
memset2.ll
…
memset_chk-1.ll
Let llvm.objectsize be conservative with null pointers
2017-03-21 20:08:59 +00:00
memset_chk-2.ll
…
memset-1.ll
SimplifyLibCalls: Fix crash on memset(notmalloc())
2017-04-25 19:44:25 +00:00
memset-2.ll
…
memset.ll
Restore original intent of memset instcombine test
2017-06-29 14:21:28 +00:00
merge-icmp.ll
…
min-positive.ll
[InstCombine] allow (icmp sgt smin(PosA, B), 0) fold for vectors
2016-09-15 16:23:20 +00:00
minmax-fold.ll
[InstCombine] Canonicalize clamp of float types to minmax in fast mode.
2017-08-04 12:22:17 +00:00
minmax-fp.ll
[InstCombine] auto-generate checks
2016-10-25 00:41:00 +00:00
minnum.ll
…
misc-2002.ll
…
mul-masked-bits.ll
…
mul.ll
[InstCombine] Propagate nsw flag when turning mul by pow2 into shift when the constant is a vector splat or the scalar bit width is larger than 64-bits
2017-06-27 19:57:53 +00:00
multi-size-address-space-pointer.ll
…
multi-use-or.ll
…
narrow-switch.ll
opt: Rename -default-data-layout flag to -data-layout and make it always override the layout.
2017-02-17 17:36:52 +00:00
narrow.ll
[InstCombine] fix operand-complexity-based canonicalization (PR28296)
2017-02-03 21:43:34 +00:00
no_cgscc_assert.ll
…
no-negzero.ll
…
non-integral-pointers.ll
[InstCombine] Don't coerce non-integral pointers to integers
2016-08-06 02:58:48 +00:00
nonnull-attribute.ll
…
not.ll
[InstCombine] fix icmp with not op and constant to work with splat vector constant
2017-06-02 16:29:41 +00:00
nothrow.ll
…
nsw.ll
…
obfuscated_splat.ll
…
objsize-64.ll
…
objsize-address-space.ll
…
objsize-noverify.ll
…
objsize.ll
Let llvm.objectsize be conservative with null pointers
2017-03-21 20:08:59 +00:00
odr-linkage.ll
…
onehot_merge.ll
[InstCombine] Fold (!iszero(A & K1) & !iszero(A & K2)) -> (A & (K1 | K2)) == (K1 | K2) if K1 and K2 are a 1-bit mask
2017-06-16 05:10:37 +00:00
opaque.ll
…
or-fcmp.ll
…
or-xor.ll
[InstCombine] add descriptive comments for tests; NFC
2017-07-13 17:24:57 +00:00
or.ll
[InstCombine] Make (X|C1)^C2 -> X^(C1^C2) iff X&~C1 == 0 work for splat vectors
2017-08-10 20:35:34 +00:00
osx-names.ll
…
overflow-mul.ll
…
overflow.ll
…
OverlappingInsertvalues.ll
…
phi-load-metadata-2.ll
…
phi-load-metadata-3.ll
…
phi-load-metadata.ll
…
phi-merge-gep.ll
…
phi-preserve-ir-flags.ll
…
phi-select-constant.ll
[InstCombine] Set correct insertion point for selects generated while folding phis
2017-06-16 21:08:37 +00:00
phi.ll
…
pow-1.ll
SimplifyLibCalls: Replace fabs libcalls with intrinsics
2017-01-17 00:10:40 +00:00
pow-2.ll
…
pow-3.ll
…
pow-4.ll
[SimplifyLibCalls] Propagate fast math flags while optimizing pow().
2017-01-10 18:02:05 +00:00
pow-exp-nofastmath.ll
…
pow-exp.ll
…
pow-sqrt.ll
Replace hardcoded intrinsic list with speculatable attribute.
2017-05-03 02:26:10 +00:00
pr2645-0.ll
…
pr2996.ll
…
pr12251.ll
…
pr12338.ll
…
pr17827.ll
[InstCombine] Teach the code that pulls logical operators through constant shifts to handle vector splats too.
2017-08-05 20:00:42 +00:00
pr19420.ll
[InstCombine] auto-generate better test checks; NFC
2017-02-03 20:56:38 +00:00
pr20079.ll
…
pr20678.ll
…
pr21199.ll
…
pr21210.ll
…
pr21651.ll
…
pr21891.ll
…
pr23751.ll
…
pr23809.ll
…
pr24354.ll
…
pr24605.ll
…
pr25342.ll
[InstCombine] Resubmit the combine of A->B->A BitCast and fix for pr27996
2016-10-25 20:43:42 +00:00
pr25745.ll
…
pr26992.ll
…
pr26993.ll
…
pr27236.ll
[InstCombine] Canonicalize clamp of float types to minmax in fast mode.
2017-08-04 12:22:17 +00:00
pr27332.ll
…
pr27703.ll
[InstCombine] Resubmit the combine of A->B->A BitCast and fix for pr27996
2016-10-25 20:43:42 +00:00
pr27996.ll
[InstCombine] Resubmit the combine of A->B->A BitCast and fix for pr27996
2016-10-25 20:43:42 +00:00
pr28143.ll
…
pr30929.ll
[LibcallsShrinkWrap] This pass doesn't preserve the CFG.
2016-11-08 19:18:20 +00:00
pr31990_wrong_memcpy.ll
Remove sometimes faulty rewrite of memcpy in instcombine.
2017-03-01 06:45:20 +00:00
pr32686.ll
Regenerate test. NFCI.
2017-04-19 12:06:40 +00:00
pr33453.ll
[InstCombine] Make FPMathOperator working with ConstantExpression(s).
2017-06-17 00:07:22 +00:00
pr33689_same_bitwidth.ll
Add original reproducer for r307754 / PR33689
2017-07-13 07:38:53 +00:00
pr33765.ll
[InstCombine] Fold branches with irrelevant conditions to a constant.
2017-08-23 09:14:37 +00:00
PR30597.ll
[InstCombine] Transform !range metadata to !nonnull when combining loads
2016-10-11 01:00:45 +00:00
prefetch-load.ll
Change the default attributes for llvm.prefetch to inaccessiblemem_or_argmemonly
2017-03-25 20:20:23 +00:00
preserve-sminmax.ll
…
preserved-analyses.ll
[PM] Fix instcombine's analysis preservation in the new pass manager to
2017-01-14 23:25:22 +00:00
prevent-cmp-merge.ll
…
printf-1.ll
…
printf-2.ll
…
printf-3.ll
…
ptr-int-cast.ll
…
puts-1.ll
…
range-check.ll
…
README.txt
…
readnone-maythrow.ll
[InstCombine] Don't DSE across readnone functions that may throw
2017-01-17 05:45:09 +00:00
rem.ll
[InstCombine] Add support for vector srem->urem.
2017-04-17 01:51:24 +00:00
rotate.ll
[InstCombine] narrow rotate left/right patterns to eliminate zext/trunc (PR34046)
2017-08-09 18:37:41 +00:00
round.ll
…
sdiv-1.ll
…
sdiv-2.ll
…
select_meta.ll
[InstCombine] canonicalize non-obivous forms of integer min/max
2017-02-21 19:33:53 +00:00
select-2.ll
…
select-bitext.ll
[InstCombine] use m_APInt to allow ashr folds for vectors with splat constants
2017-01-15 16:38:19 +00:00
select-cmp-br.ll
[InstCombine] Fold branches with irrelevant conditions to a constant.
2017-08-23 09:14:37 +00:00
select-cmp-cttz-ctlz.ll
[PatternMatch] Remove 64-bit or less restriction from m_SpecificInt
2017-06-27 15:39:40 +00:00
select-crash-noverify.ll
…
select-crash.ll
…
select-extractelement.ll
…
select-implied.ll
[ValueTracking] Fix the identity case (LHS => RHS) when the LHS is false.
2017-07-07 13:55:55 +00:00
select-load-call.ll
…
select-select.ll
…
select-with-bitwise-ops.ll
[InstCombine] Teach foldSelectICmpAnd to recognize a (icmp slt X, 0) and (icmp sgt X, -1) as equivalent to an and with the sign bit of the truncated type
2017-08-21 19:02:06 +00:00
select.ll
[InstCombine] Make folding (X >s -1) ? C1 : C2 --> ((X >>s 31) & (C2 - C1)) + C1 support splat vectors
2017-08-16 21:52:07 +00:00
set.ll
[InstCombine] fix code/test comments for r305792; NFC
2017-06-20 12:45:46 +00:00
setcc-strength-reduce.ll
…
sext.ll
[InstCombine] fix auto-generated FileCheck-captured variable refs
2017-05-10 14:40:04 +00:00
shift-add.ll
[InstCombine] Folding of shifts by the sum of positive values
2016-11-01 15:40:30 +00:00
shift-shift.ll
…
shift-sra.ll
[InstCombine] sink sext after ashr
2017-08-15 18:25:52 +00:00
shift.ll
[InstCombine] Added support for (X >>s C) << C --> X & (-1 << C)
2017-08-15 19:33:14 +00:00
shufflevec-bitcast.ll
InstCombine: fix extraction when performing vector/array punning
2017-02-17 07:36:03 +00:00
shufflevec-constant.ll
…
sign-test-and-or.ll
minimize tests and auto-generate checks
2016-07-20 17:58:20 +00:00
signed-comparison.ll
…
signext.ll
[InstCombine] use m_APInt to allow ashr folds for vectors with splat constants
2017-01-15 16:38:19 +00:00
simplify-demanded-bits-pointer.ll
…
simplify-libcalls.ll
[TLI] isdigit / isascii / toascii param type should match return type (PR30484)
2016-09-23 18:44:09 +00:00
sincospi.ll
…
sink_instruction.ll
[InstCombine] Allow sinking from unique predecessor with multiple edges
2016-08-22 18:21:56 +00:00
sink-into-catchswitch.ll
…
sink-zext.ll
[InstCombine] Add a test for r290733
2017-01-04 02:21:37 +00:00
sitofp.ll
[InstCombine] auto-generate better checks; NFC
2017-03-21 14:04:44 +00:00
smax-icmp.ll
[InstCombine] add folds for icmp (smax X, Y), X
2016-12-19 16:28:53 +00:00
smin-icmp.ll
[InstCombine] add folds for icmp (smin X, Y), X
2016-12-15 19:13:37 +00:00
sprintf-1.ll
…
sqrt-nofast.ll
…
sqrt.ll
…
srem1.ll
…
srem-simplify-bug.ll
…
stack-overalign.ll
…
stacksaverestore.ll
…
statepoint.ll
…
store.ll
…
stpcpy_chk-1.ll
Let llvm.objectsize be conservative with null pointers
2017-03-21 20:08:59 +00:00
stpcpy_chk-2.ll
…
stpcpy-1.ll
…
stpcpy-2.ll
…
strcat-1.ll
…
strcat-2.ll
…
strcat-3.ll
…
strchr-1.ll
…
strchr-2.ll
…
strcmp-1.ll
…
strcmp-2.ll
…
strcpy_chk-1.ll
Let llvm.objectsize be conservative with null pointers
2017-03-21 20:08:59 +00:00
strcpy_chk-2.ll
…
strcpy_chk-64.ll
…
strcpy-1.ll
…
strcpy-2.ll
…
strcspn-1.ll
…
strcspn-2.ll
…
strlen-1.ll
strlen-1.ll: Fix test
2017-05-03 23:32:51 +00:00
strlen-2.ll
…
strncat-1.ll
…
strncat-2.ll
…
strncat-3.ll
…
strncmp-1.ll
…
strncmp-2.ll
…
strncpy_chk-1.ll
…
strncpy_chk-2.ll
…
strncpy-1.ll
…
strncpy-2.ll
…
strpbrk-1.ll
…
strpbrk-2.ll
…
strrchr-1.ll
…
strrchr-2.ll
…
strspn-1.ll
…
strstr-1.ll
…
strstr-2.ll
…
strto-1.ll
…
struct-assign-tbaa.ll
…
sub-xor.ll
Replace hardcoded intrinsic list with speculatable attribute.
2017-05-03 02:26:10 +00:00
sub.ll
[InstCombine] Support pulling left shifts through a subtract with constant LHS
2017-08-08 20:14:11 +00:00
switch-constant-expr.ll
[InstCombine] Fix constexpr issue in select combining
2016-10-12 10:20:15 +00:00
switch-truncate-crash.ll
…
tan-nofastmath.ll
…
tan.ll
…
tbaa-store-to-load.ll
[Verifier] Add verification for TBAA metadata
2016-12-11 20:07:15 +00:00
toascii-1.ll
…
token.ll
…
trunc.ll
[InstCombine] Teach ComputeNumSignBitsImpl to handle integer multiply instruction.
2017-08-18 22:56:55 +00:00
type_pun.ll
Update tests for the patch.
2017-04-14 17:47:07 +00:00
udiv_select_to_select_shift.ll
[InstCombine] update test to use FileCheck; NFC
2016-11-11 23:12:46 +00:00
udiv-simplify.ll
[InstCombine] Teach the udiv folding logic how to handle constant expressions.
2016-09-26 12:07:23 +00:00
udivrem-change-width.ll
[InstCombine] add udiv/urem tests with constant numerator; NFC
2017-08-21 22:40:02 +00:00
umax-icmp.ll
[InstCombine] add folds for icmp (umin|umax X, Y), X
2016-12-19 17:32:37 +00:00
umin-icmp.ll
[InstCombine] add folds for icmp (umin|umax X, Y), X
2016-12-19 17:32:37 +00:00
unordered-fcmp-select.ll
…
unpack-fca.ll
[InstCombine] Don't unpack arrays that are too large (part 2).
2016-10-07 21:53:09 +00:00
urem-simplify-bug.ll
[InstSimplify] Optimize away urems in the presence of range metadata
2017-01-06 21:23:51 +00:00
vararg.ll
Add address space mangling to lifetime intrinsics
2017-04-10 20:18:21 +00:00
vec_demanded_elts.ll
InstCombine: Move tests that use target intrinsics into subdirectories
2017-05-13 05:39:46 +00:00
vec_extract_2elts.ll
…
vec_extract_elt.ll
…
vec_extract_var_elt.ll
…
vec_insertelt.ll
…
vec_narrow.ll
…
vec_phi_extract.ll
[InstCombine] Support ~(c-X) --> X+(-c-1) and ~(X-c) --> (-c-1)-X for splat vectors.
2017-08-06 06:28:41 +00:00
vec_sext.ll
[InstCombine] fix operand-complexity-based canonicalization (PR28296)
2017-02-03 21:43:34 +00:00
vec_shuffle.ll
[InstCombine] regenerate checks; NFC
2016-11-09 22:21:58 +00:00
vector_gep1.ll
…
vector_gep2.ll
…
vector_insertelt_shuffle.ll
[InstCombine] canonicalize insertelement of scalar constant ahead of insertelement of variable
2017-03-22 17:10:44 +00:00
vector-casts.ll
[InstCombine] Remove check for sext of vector icmp from shouldOptimizeCast
2017-08-22 23:40:15 +00:00
vector-mul.ll
…
vector-type.ll
…
vector-urem.ll
[InstSimplify] vector div/rem with any zero element in divisor is undef
2017-03-09 16:20:52 +00:00
volatile_store.ll
…
wcslen-1.ll
SimplifyLibCalls: Optimize wcslen
2017-05-19 22:37:09 +00:00
wcslen-2.ll
SimplifyLibCalls: Optimize wcslen
2017-05-19 22:37:09 +00:00
wcslen-3.ll
SimplifyLibCalls: Optimize wcslen
2017-05-19 22:37:09 +00:00
weak-symbols.ll
…
win-math.ll
SimplifyLibCalls: Replace more unary libcalls with intrinsics
2017-01-23 23:55:08 +00:00
xor2.ll
[InstCombine] Cleanup some duplicated one use checks
2017-06-19 16:23:49 +00:00
xor-undef.ll
…
xor.ll
[InstCombine] Support '(C - X) ^ signmask -> (C + signmask - X)' and '(X + C) ^ signmask -> (X + C + signmask)' for vector splats.
2017-08-06 22:17:21 +00:00
zero-point-zero-add.ll
SimplifyLibCalls: Replace fabs libcalls with intrinsics
2017-01-17 00:10:40 +00:00
zeroext-and-reduce.ll
[InstCombine] LogicOpc (zext X), C --> zext (LogicOpc X, C) (PR28476)
2016-07-21 00:24:18 +00:00
zext-bool-add-sub.ll
add more tests for PR30273
2016-09-12 22:28:29 +00:00
zext-fold.ll
…
zext-or-icmp.ll
[ValueTracking] Out of range shifts might be undef
2017-03-14 10:13:17 +00:00
zext-phi.ll
[InstCombine] treat i1 as a special type in shouldChangeType()
2017-02-03 23:13:11 +00:00
zext.ll
[InstCombine] revert r300977 and r301021
2017-04-21 20:29:17 +00:00

README.txt 

This directory contains test cases for the instcombine transformation.  The
dated tests are actual bug tests, whereas the named tests are used to test
for features that the this pass should be capable of performing.
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