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llvm-6502/test/Transforms/InstCombine
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Eli Friedman c6b8ba8673 Fix an infinite loop where a transform in InstCombiner::visitAnd claims a construct is changed when it is not. (See included testcase.) 
Patch by Xiaoyi Guo.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140072 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-19 21:58:15 +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
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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
Enhance a bunch of transformations in instcombine to start generating
2011-02-10 05:36:31 +00:00
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
Enhance a bunch of transformations in instcombine to start generating
2011-02-10 05:36:31 +00:00
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
Stop accepting and ignoring attributes in function types. Attributes are applied
2011-06-17 17:37:13 +00:00
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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2007-09-11-Trampoline.ll
Stop accepting and ignoring attributes in function types. Attributes are applied
2011-06-17 17:37:13 +00:00
2007-09-17-AliasConstFold2.ll
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2007-10-10-EliminateMemCpy.ll
rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is
2011-06-18 06:05:24 +00:00
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
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
Stop accepting and ignoring attributes in function types. Attributes are applied
2011-06-17 17:37:13 +00:00
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
manually upgrade a bunch of tests to modern syntax, and remove some that
2011-06-17 03:14:27 +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
manually upgrade a bunch of tests to modern syntax, and remove some that
2011-06-17 03:14:27 +00:00
2008-01-14-DoubleNest.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
Move "atomic" and "volatile" designations on instructions after the opcode
2011-08-12 22:50:01 +00:00
2008-04-29-VolatileLoadDontMerge.ll
Move "atomic" and "volatile" designations on instructions after the opcode
2011-08-12 22:50:01 +00:00
2008-04-29-VolatileLoadMerge.ll
Move "atomic" and "volatile" designations on instructions after the opcode
2011-08-12 22:50:01 +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
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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
Move "atomic" and "volatile" designations on instructions after the opcode
2011-08-12 22:50:01 +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
My auto-simplifier noticed that ((X/Y)*Y)/Y occurs several times in SPEC
2011-01-28 16:51:11 +00:00
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
rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is
2011-06-18 06:05:24 +00:00
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
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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
Fix 9216 - Endless loop in InstCombine pass.
2011-02-15 07:13:48 +00:00
2011-03-08-SRemMinusOneBadOpt.ll
PR9346: Prevent SimplifyDemandedBits from incorrectly introducing
2011-03-09 01:28:35 +00:00
2011-05-02-VectorBoolean.ll
Fix PR9579: when simplifying a compare to "true" or "false", and it was
2011-05-02 18:51:41 +00:00
2011-05-13-InBoundsGEP.ll
Drop lli, revise test.
2011-05-17 02:38:59 +00:00
2011-05-28-swapmulsub.ll
Reapply 132348 with fixes. rdar://problem/6501862
2011-06-01 16:42:47 +00:00
2011-06-13-nsw-alloca.ll
Avoid fusing bitcasts with dynamic allocas if the amount-to-allocate
2011-06-13 18:48:49 +00:00
2011-09-03-Trampoline.ll
Forgot to add this trampoline testcase.
2011-09-07 09:21:38 +00:00
add2.ll
preserve NUW/NSW when transforming add x,x
2011-02-17 02:23:02 +00:00
add3.ll
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add-shrink.ll
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add-sitofp.ll
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add.ll
Also fold (A+B) == A -> B == 0 when the add is commuted.
2011-02-11 21:46:48 +00:00
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
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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
Fix a ton of comment typos found by codespell. Patch by
2011-04-15 05:18:47 +00:00
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
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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
Enhance constant folding of bitcast operations on vectors of floats.
2011-02-17 21:22:27 +00:00
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
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bittest.ll
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bswap-fold.ll
make the asmparser reject function and type redefinitions. 'Merging' hasn't been
2011-06-17 07:06:44 +00:00
bswap.ll
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call2.ll
Remove support for using "foo" as symbols instead of %"foo". This is ancient
2011-06-17 06:36:20 +00:00
call-cast-target.ll
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call-intrinsics.ll
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call.ll
Update to new EH scheme.
2011-09-01 01:28:25 +00:00
canonicalize_branch.ll
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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
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CPP_min_max.ll
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crash.ll
Auto upgrade the old EH scheme to use the new one. This is on a trial basis. If
2011-08-27 06:11:03 +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
Try to not lose variable's debug info during instcombine.
2011-03-17 22:18:16 +00:00
devirt.ll
Migrate this test from llvm/test/FrontendC++/ptr-to-method-devirt.cpp and
2011-08-16 01:17:17 +00:00
dg.exp
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div.ll
Carve out a place in instcombine to put transformations which work knowing that their
2011-05-22 18:18:41 +00:00
enforce-known-alignment.ll
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exact.ll
PR9998: ashr exact %x, 31 is not equivalent to sdiv exact %x, -2147483648.
2011-05-25 23:26:20 +00:00
ExtractCast.ll
Instcombile optimization: extractelement(cast) -> cast(extractelement)
2011-03-31 22:57:29 +00:00
extractvalue.ll
Move "atomic" and "volatile" designations on instructions after the opcode
2011-08-12 22:50:01 +00:00
fcmp-select.ll
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fcmp-special.ll
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fcmp.ll
InstCombine: APFloat can't perform arithmetic on PPC double doubles, don't even try.
2011-03-31 21:35:49 +00:00
fdiv.ll
Avoid turning a floating point division with a constant power of two into a denormal multiplication.
2011-03-30 17:02:54 +00:00
fold-bin-operand.ll
FileCheck-ize and update test.
2011-03-18 01:10:31 +00:00
fold-calls.ll
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fold-vector-select.ll
Fix 9173.
2011-02-11 19:37:55 +00:00
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
This testcase passed even without the fix. Added the target info to make the
2011-04-06 11:18:29 +00:00
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
PR10267: Don't combine an equality compare with an AND into an inequality compare when the AND has more than one use.
2011-07-04 20:16:36 +00:00
idioms.ll
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IntPtrCast.ll
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intrinsics.ll
Move "atomic" and "volatile" designations on instructions after the opcode
2011-08-12 22:50:01 +00:00
invariant.ll
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JavaCompare.ll
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known_align.ll
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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
rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is
2011-06-18 06:05:24 +00:00
memcpy.ll
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memmove.ll
rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is
2011-06-18 06:05:24 +00:00
memset2.ll
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memset_chk.ll
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memset.ll
rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is
2011-06-18 06:05:24 +00:00
merge-icmp.ll
InstCombine: Merge "(trunc x) == C1 & (and x, CA) == C2" into a single and+icmp.
2011-04-28 16:58:40 +00:00
mul-masked-bits.ll
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mul.ll
…
multi-use-or.ll
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narrow.ll
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neon-intrinsics.ll
…
no-negzero.ll
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not-fcmp.ll
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not.ll
manually upgrade a bunch of tests to modern syntax, and remove some that
2011-06-17 03:14:27 +00:00
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
make the asmparser reject function and type redefinitions. 'Merging' hasn't been
2011-06-17 07:06:44 +00:00
odr-linkage.ll
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or-fcmp.ll
Just because we have determined that an (fcmp | fcmp) is true for A < B,
2011-01-21 19:39:42 +00:00
or-to-xor.ll
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or-xor.ll
InstCombine: Add a bunch of combines of the form x | (y ^ z).
2011-02-20 13:23:43 +00:00
or.ll
More instcombine cleanup, towards improving debug line info.
2011-05-18 23:58:37 +00:00
overflow.ll
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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
…
pr8547.ll
Enhance a bunch of transformations in instcombine to start generating
2011-02-10 05:36:31 +00:00
preserve-sminmax.ll
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ptr-int-cast.ll
…
README.txt
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rem.ll
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sdiv-1.ll
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sdiv-2.ll
…
sdiv-shift.ll
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select-2.ll
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select-crash.ll
PR10180: Fix a instcombine crash with FP vectors.
2011-06-23 20:40:23 +00:00
select-load-call.ll
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select.ll
ConstantFoldInstOperands doesn't like compares, hand it off to instsimplify instead.
2011-05-28 10:16:58 +00:00
set.ll
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setcc-strength-reduce.ll
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sext.ll
InstCombine: Turn icmp + sext into bitwise/integer ops when the input has only one unknown bit.
2011-04-01 20:09:10 +00:00
shift-sra.ll
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shift.ll
Make sure to correctly clear the exact/nuw/nsw flags off of shifts when they are combined together. <rdar://problem/9859829>
2011-07-29 00:18:19 +00:00
shufflemask-undef.ll
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shufflevec-constant.ll
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sign-test-and-or.ll
InstCombine: Add a few missing combines for ANDs and ORs of sign bit tests.
2011-03-29 22:06:41 +00:00
signed-comparison.ll
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signext.ll
Enhance a bunch of transformations in instcombine to start generating
2011-02-10 05:36:31 +00:00
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
rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is
2011-06-18 06:05:24 +00:00
stacksaverestore.ll
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store.ll
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strcpy_chk-64.ll
If we don't know how long a string is we can't fold an _chk version to the
2011-03-15 00:25:41 +00:00
strcpy_chk.ll
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sub.ll
manually upgrade a bunch of tests to modern syntax, and remove some that
2011-06-17 03:14:27 +00:00
trunc.ll
Enhance a bunch of transformations in instcombine to start generating
2011-02-10 05:36:31 +00:00
udiv_select_to_select_shift.ll
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udiv-simplify-bug-0.ll
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udiv-simplify-bug-1.ll
…
udivrem-change-width.ll
InstCombine: Turn (zext A) udiv (zext B) into (zext (A udiv B)). Same for urem or constant B.
2011-04-30 18:16:07 +00:00
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
…
vec_shuffle.ll
Land the long talked about "type system rewrite" patch. This
2011-07-09 17:41:24 +00:00
vector-casts.ll
Teach PatternMatch that splat vectors could be floating point as well as
2011-02-15 23:13:23 +00:00
vector-srem.ll
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volatile_store.ll
Move "atomic" and "volatile" designations on instructions after the opcode
2011-08-12 22:50:01 +00:00
x86-crc32-demanded.ll
Renamed llvm.x86.sse42.crc32 intrinsics; crc64 doesn't exist.
2011-05-26 23:13:19 +00:00
xor2.ll
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xor-undef.ll
…
xor.ll
…
zero-point-zero-add.ll
…
zeroext-and-reduce.ll
…
zext-bool-add-sub.ll
…
zext-fold.ll
…
zext-or-icmp.ll
manually upgrade a bunch of tests to modern syntax, and remove some that
2011-06-17 03:14:27 +00:00
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.