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llvm-6502/test/Transforms/InstCombine
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Rafael Espindola 26c8dcc692 Always compute all the bits in ComputeMaskedBits. 
This allows us to keep passing reduced masks to SimplifyDemandedBits, but
know about all the bits if SimplifyDemandedBits fails. This allows instcombine
to simplify cases like the one in the included testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154011 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-04 12:51:34 +00:00
..
2002-03-11-InstCombineHang.ll
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2002-05-14-SubFailure.ll
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2002-08-02-CastTest.ll
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2002-12-05-MissedConstProp.ll
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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
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
2011-11-27 06:54:59 +00:00
2003-10-29-CallSiteResolve.ll
Update to new EH scheme.
2011-09-01 01:28:25 +00:00
2003-11-03-VarargsCallBug.ll
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2004-01-13-InstCombineInvokePHI.ll
Update to new EH scheme.
2011-09-01 01:28:25 +00:00
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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2005-06-16-SetCCOrSetCCMiscompile.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
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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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2007-01-27-AndICmp.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
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2007-03-25-BadShiftMask.ll
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2007-03-25-DoubleShift.ll
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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
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
2011-11-27 06:54:59 +00:00
2007-10-31-RangeCrash.ll
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2007-10-31-StringCrash.ll
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2007-11-07-OpaqueAlignCrash.ll
Land the long talked about "type system rewrite" patch. This
2011-07-09 17:41:24 +00:00
2007-11-15-CompareMiscomp.ll
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2007-11-22-IcmpCrash.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
Revert "Disable InstCombine unsafe folding bitcasts of calls w/ varargs."
2012-02-03 00:00:50 +00:00
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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2008-01-13-NoBitCastAttributes.ll
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2008-01-14-VarArgTrampoline.ll
Split the init.trampoline intrinsic, which currently combines GCC's
2011-09-06 13:37:06 +00:00
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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2008-01-29-AddICmp.ll
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2008-02-13-MulURem.ll
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2008-02-16-SDivOverflow2.ll
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2008-02-16-SDivOverflow.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
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
2011-11-27 06:54:59 +00:00
2008-04-29-VolatileLoadDontMerge.ll
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
2011-11-27 06:54:59 +00:00
2008-04-29-VolatileLoadMerge.ll
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
2011-11-27 06:54:59 +00:00
2008-05-08-LiveStoreDelete.ll
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2008-05-08-StrLenSink.ll
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2008-05-09-SinkOfInvoke.ll
Update to new EH scheme.
2011-09-01 01:28:25 +00:00
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
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2008-05-23-CompareFold.ll
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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
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
2011-11-27 06:54:59 +00:00
2008-07-08-AndICmp.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
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
2011-11-27 06:54:59 +00:00
2008-07-09-SubAndError.ll
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2008-07-10-CastSextBool.ll
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2008-07-10-ICmpBinOp.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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2008-07-16-sse2_storel_dq.ll
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2008-08-05-And.ll
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2008-08-17-ICmpXorSignbit.ll
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2008-09-02-VectorCrash.ll
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2008-09-29-FoldingOr.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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2008-11-20-DivMulRem.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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2009-02-20-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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2009-03-20-AShrOverShift.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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2010-11-01-lshr-mask.ll
Revert 141203. InstCombine is looping on unit tests.
2011-10-05 20:44:29 +00:00
2010-11-21-SizeZeroTypeGEP.ll
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2010-11-23-Distributed.ll
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2011-02-14-InfLoop.ll
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2011-03-08-SRemMinusOneBadOpt.ll
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2011-05-02-VectorBoolean.ll
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2011-05-13-InBoundsGEP.ll
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2011-05-28-swapmulsub.ll
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2011-06-13-nsw-alloca.ll
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2011-09-03-Trampoline.ll
Forgot to add this trampoline testcase.
2011-09-07 09:21:38 +00:00
2011-10-07-AlignPromotion.ll
Added a testcase for r141599, rdar://problem/10063881.
2011-10-11 01:32:10 +00:00
2012-3-15-or-xor-constant.ll
In InstCombiner::visitOr, make sure we reverse the operand swap used for checking for or-of-xor operations after those checks; a later check expects that any constant will be in Op1. PR12234.
2012-03-16 00:52:42 +00:00
2012-01-11-OpaqueBitcastCrash.ll
Don't try to create a GEP when the pointee type is unsized (such GEPs
2012-01-11 12:20:08 +00:00
2012-02-13-FCmp.ll
Check against umin while converting fcmp into an icmp.
2012-02-13 23:05:18 +00:00
2012-02-28-ICmp.ll
Testcase for r151691.
2012-02-29 01:53:13 +00:00
2012-03-10-InstCombine.ll
Don't try to filecheck bitcode.
2012-03-10 18:07:46 +00:00
add2.ll
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add3.ll
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add-shrink.ll
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add-sitofp.ll
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add.ll
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addnegneg.ll
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adjust-for-sminmax.ll
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align-2d-gep.ll
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align-addr.ll
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align-external.ll
Fix a theoretical problem (not seen in the wild): if different instances of a
2011-11-29 18:26:38 +00:00
alloca.ll
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and2.ll
Fix an infinite loop where a transform in InstCombiner::visitAnd claims a construct is changed when it is not. (See included testcase.)
2011-09-19 21:58:15 +00:00
and-compare.ll
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and-fcmp.ll
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and-not-or.ll
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and-or-and.ll
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and-or-not.ll
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and-or.ll
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and-xor-merge.ll
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and.ll
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apint-add1.ll
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apint-add2.ll
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apint-and1.ll
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apint-and2.ll
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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-call-cast-target.ll
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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
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apint-or1.ll
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apint-or2.ll
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apint-rem1.ll
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apint-rem2.ll
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apint-select.ll
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apint-shift-simplify.ll
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apint-shift.ll
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apint-shl-trunc.ll
Filecheck-ize this test so that it actually tests something reasonable.
2012-03-29 22:01:41 +00:00
apint-sub.ll
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apint-xor1.ll
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apint-xor2.ll
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apint-zext1.ll
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apint-zext2.ll
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ashr-nop.ll
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atomic.ll
An additional atomic test; related to r137662.
2011-08-16 23:29:17 +00:00
badmalloc.ll
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binop-cast.ll
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bit-checks.ll
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bit-tracking.ll
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bitcast-sext-vector.ll
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bitcast-store.ll
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bitcast-vec-canon.ll
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bitcast-vec-uniform.ll
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bitcast-vector-fold.ll
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bitcast.ll
Implement Constant::isAllOnesValue(). Fix ConstantFolding to use the new api.
2011-08-24 20:18:38 +00:00
bitcount.ll
Manually upgrade the test suite to specify the flag to cttz and ctlz.
2011-12-12 11:59:10 +00:00
bittest.ll
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bswap-fold.ll
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bswap.ll
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call2.ll
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call-cast-target.ll
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call-intrinsics.ll
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call.ll
Revert "Disable InstCombine unsafe folding bitcasts of calls w/ varargs."
2012-02-03 00:00:50 +00:00
canonicalize_branch.ll
Add a routine to swap branch instruction operands, and update any
2011-10-17 01:11:57 +00:00
cast_ptr.ll
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cast-mul-select.ll
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cast-set.ll
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cast.ll
Fixes following the CR by Chris and Duncan:
2011-08-29 19:58:36 +00:00
compare-signs.ll
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constant-fold-compare.ll
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constant-fold-gep.ll
Make SelectionDAG::InferPtrAlignment use llvm::ComputeMaskedBits instead of duplicating the logic for globals. Make llvm::ComputeMaskedBits handle GlobalVariables slightly more aggressively, to match what InferPtrAlignment knew how to do.
2011-11-28 22:48:22 +00:00
CPP_min_max.ll
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crash.ll
Convert to the new EH model.
2011-11-08 00:23:01 +00:00
dce-iterate.ll
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deadcode.ll
Lifetime intrinsics on undef are dead.
2011-08-02 21:19:27 +00:00
debuginfo.ll
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devirt.ll
Migrate this test from llvm/test/FrontendC++/ptr-to-method-devirt.cpp and
2011-08-16 01:17:17 +00:00
div.ll
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enforce-known-alignment.ll
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exact.ll
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ExtractCast.ll
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extractvalue.ll
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
2011-11-27 06:54:59 +00:00
fcmp-select.ll
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fcmp-special.ll
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fcmp.ll
float comparison to double 'zero' constant can just be a float 'zero.'
2011-09-30 18:45:50 +00:00
fdiv.ll
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fold-bin-operand.ll
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fold-calls.ll
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fold-sqrt-sqrtf.ll
Add support for sqrt, sqrtl, and sqrtf in TargetLibraryInfo. Disable
2011-11-29 23:57:10 +00:00
fold-vector-select.ll
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fold-vector-zero.ll
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fp-ret-bitcast.ll
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fpcast.ll
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fpextend.ll
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fsub.ll
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gep-addrspace.ll
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gepgep.ll
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getelementptr.ll
Add a small gep optimization I noticed was missing while reading some IL.
2011-07-31 04:43:41 +00:00
hoist_instr.ll
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icmp.ll
Reinstate the optimization from r151449 with a fix to not turn 'gep %x' into
2012-02-26 02:09:49 +00:00
idioms.ll
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IntPtrCast.ll
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intrinsics.ll
Add an explicit test that we now fold cttz.i32(..., true) >> 5 -> 0.
2011-12-24 22:34:15 +00:00
invariant.ll
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JavaCompare.ll
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known_align.ll
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LandingPadClauses.ll
Add support for the Objective-C personality function to the instruction
2011-10-17 21:20:24 +00:00
lit.local.cfg
Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed.
2012-02-16 06:28:33 +00:00
load3.ll
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load-cmp.ll
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load-select.ll
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load.ll
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loadstore-alignment.ll
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logical-select.ll
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lshr-phi.ll
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malloc-free-delete.ll
Fix logical error when detecting lifetime intrinsics.
2011-08-03 00:43:35 +00:00
memcpy-to-load.ll
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memcpy.ll
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memmove.ll
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memset2.ll
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memset_chk.ll
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memset.ll
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merge-icmp.ll
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mul-masked-bits.ll
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mul.ll
Factor out the multiply analysis code in ComputeMaskedBits and apply it to the
2012-03-18 23:28:48 +00:00
multi-use-or.ll
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narrow.ll
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neon-intrinsics.ll
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no-negzero.ll
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not-fcmp.ll
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not.ll
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nothrow.ll
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nsw.ll
This transform is not safe. Thanks to Eli for pointing that out!
2011-08-14 04:51:49 +00:00
objsize.ll
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odr-linkage.ll
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or-fcmp.ll
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or-to-xor.ll
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or-xor.ll
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or.ll
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overflow.ll
Add a missing safety check to ProcessUGT_ADDCST_ADD. Fixes PR11438.
2011-11-28 23:32:19 +00:00
phi-merge-gep.ll
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phi.ll
Land the long talked about "type system rewrite" patch. This
2011-07-09 17:41:24 +00:00
pr2645-0.ll
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pr2645-1.ll
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pr2996.ll
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pr8547.ll
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pr12251.ll
Always compute all the bits in ComputeMaskedBits.
2012-04-04 12:51:34 +00:00
preserve-sminmax.ll
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ptr-int-cast.ll
Stop emitting instructions with the name "tmp" they eat up memory and have to be uniqued, without any benefit.
2011-09-27 20:39:19 +00:00
README.txt
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rem.ll
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sdiv-1.ll
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sdiv-2.ll
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sdiv-shift.ll
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select-2.ll
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select-crash.ll
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select-load-call.ll
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select.ll
Added InstCombine for "select cond, ~cond, x" type patterns
2011-12-15 00:56:45 +00:00
set.ll
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setcc-strength-reduce.ll
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sext.ll
Manually upgrade the test suite to specify the flag to cttz and ctlz.
2011-12-12 11:59:10 +00:00
shift-sra.ll
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shift.ll
Teach instcombine all sorts of great stuff about shifts that have exact, nuw or
2012-01-04 09:28:29 +00:00
shufflemask-undef.ll
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shufflevec-constant.ll
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sign-test-and-or.ll
InstCombine: Teach foldLogOpOfMaskedICmpsHelper that sign bit tests are bit tests.
2012-01-09 17:23:27 +00:00
signed-comparison.ll
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signext.ll
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simplify-demanded-bits-pointer.ll
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sink_instruction.ll
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sitofp.ll
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sqrt.ll
Change test case, one that actually failed before my commit.
2011-07-13 19:19:44 +00:00
srem1.ll
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srem-simplify-bug.ll
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srem.ll
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stack-overalign.ll
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stacksaverestore.ll
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store.ll
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strcpy_chk-64.ll
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strcpy_chk.ll
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sub-xor.ll
InstCombine: Add a combine that turns (2^n)-1 ^ x back into (2^n)-1 - x iff x is smaller than 2^n and it fuses with a following add.
2011-12-24 17:31:53 +00:00
sub.ll
InstCombine: Make OptimizePointerDifference more aggressive.
2012-02-20 14:34:57 +00:00
trunc.ll
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udiv_select_to_select_shift.ll
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udiv-simplify-bug-0.ll
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udiv-simplify-bug-1.ll
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udivrem-change-width.ll
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urem-simplify-bug.ll
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urem.ll
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vec_demanded_elts.ll
Make demanded-elt simplification for shufflevector slightly stronger. Spotted by inspection.
2011-09-15 01:14:29 +00:00
vec_extract_elt.ll
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vec_insertelt.ll
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vec_narrow.ll
Land the long talked about "type system rewrite" patch. This
2011-07-09 17:41:24 +00:00
vec_sext.ll
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vec_shuffle.ll
Extend instcombine's shufflevector simplification to handle more cases where the input and output vectors have different sizes. Patch by Xiaoyi Guo.
2011-10-21 19:06:29 +00:00
vector_gep1.ll
Add support for vectors of pointers.
2011-12-05 06:29:09 +00:00
vector-casts.ll
Stop emitting instructions with the name "tmp" they eat up memory and have to be uniqued, without any benefit.
2011-09-27 20:39:19 +00:00
vector-srem.ll
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volatile_store.ll
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
2011-11-27 06:54:59 +00:00
x86-crc32-demanded.ll
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xor2.ll
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xor-undef.ll
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xor.ll
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zero-point-zero-add.ll
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zeroext-and-reduce.ll
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zext-bool-add-sub.ll
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zext-fold.ll
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zext-or-icmp.ll
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zext.ll
…

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.