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llvm-6502/test/Transforms/InstCombine
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Chris Lattner 5324d80283 two changes: 
1) don't try to optimize a sext or zext that is only used by a trunc, let
   the trunc get optimized first.  This avoids some pointless effort in
   some common cases since instcombine scans down a block in the first pass.
2) Change the cost model for zext elimination to consider an 'and' cheaper
   than a zext.  This allows us to do it more aggressively, and for the next
   patch to simplify the code quite a bit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93097 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-10 02:39:31 +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
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2003-11-03-VarargsCallBug.ll
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2003-11-13-ConstExprCastCall.ll
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
2009-11-03 15:29:06 +00:00
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
Allow instcombine to combine "sext(a) >u const" to "a >u trunc(const)".
2009-12-17 22:42:29 +00:00
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
Convert InstCombine tests from notcast to FileCheck.
2009-10-12 06:14:06 +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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2006-11-03-Memmove64.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-ICmp-Combining.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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2007-03-27-PR1280.ll
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2007-04-04-BadFoldBitcastIntoMalloc.ll
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2007-04-08-SingleEltVectorCrash.ll
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2007-05-04-Crash.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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2007-09-11-Trampoline.ll
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2007-09-17-AliasConstFold2.ll
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2007-10-10-EliminateMemCpy.ll
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
2009-11-03 15:29:06 +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
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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
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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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2008-01-13-NoBitCastAttributes.ll
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2008-01-14-DoubleNest.ll
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2008-01-14-VarArgTrampoline.ll
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2008-01-21-MismatchedCastAndCompare.ll
Convert InstCombine tests from notcast to FileCheck.
2009-10-12 06:14:06 +00:00
2008-01-21-MulTrunc.ll
make instcombine only rewrite a chain of computation
2009-11-07 19:11:46 +00:00
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
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2008-04-29-VolatileLoadDontMerge.ll
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2008-04-29-VolatileLoadMerge.ll
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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
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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
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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
Filecheckify this one test.
2009-09-27 06:25:05 +00:00
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
Optimize icmp of null and select of two constants even if the select has
2009-12-18 08:22:35 +00:00
add2.ll
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add3.ll
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add-shrink.ll
Code that checks WillNotOverflowSignedAdd before creating an Add
2009-10-26 22:14:22 +00:00
add-sitofp.ll
Code that checks WillNotOverflowSignedAdd before creating an Add
2009-10-26 22:14:22 +00:00
add.ll
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addnegneg.ll
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adjust-for-sminmax.ll
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align-2d-gep.ll
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
2009-11-03 15:29:06 +00:00
align-addr.ll
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
2009-11-03 15:29:06 +00:00
align-external.ll
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align-inc.ll
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
2009-11-03 15:29:06 +00:00
alloca.ll
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
2009-11-03 15:29:06 +00:00
and2.ll
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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
make instcombine only rewrite a chain of computation
2009-11-07 19:11:46 +00:00
apint-div1.ll
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apint-div2.ll
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apint-elim-logicalops.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
Convert the rest of the InstCombine tests from notcast to FileCheck.
2009-10-12 07:18:14 +00:00
apint-zext2.ll
Convert the rest of the InstCombine tests from notcast to FileCheck.
2009-10-12 07:18:14 +00:00
ashr-nop.ll
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badmalloc.ll
instcombine shouldn't delete all null checks for mallocs.
2009-10-05 02:47:47 +00:00
binop-cast.ll
Convert the rest of the InstCombine tests from notcast to FileCheck.
2009-10-12 07:18:14 +00:00
bit-tracking.ll
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bitcast-scalar-to-vector.ll
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bitcast-vec-canon.ll
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bitcast-vector-fold.ll
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bitcount.ll
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bittest.ll
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bswap-fold.ll
implement the transform requested in PR5284
2010-01-01 18:34:40 +00:00
bswap.ll
remove two trunc xforms that are subsumed by EvaluateInDifferentType.
2010-01-05 22:01:41 +00:00
call2.ll
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call-cast-target.ll
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call-intrinsics.ll
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call.ll
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
2009-11-03 15:29:06 +00:00
canonicalize_branch.ll
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cast_ptr.ll
merge some tests.
2010-01-05 21:54:09 +00:00
cast-mul-select.ll
unify the code that determines whether it is a good idea to change the type
2009-11-10 07:23:37 +00:00
cast-set.ll
make instcombine only rewrite a chain of computation
2009-11-07 19:11:46 +00:00
cast.ll
two changes:
2010-01-10 02:39:31 +00:00
compare-signs.ll
Fix some CHECK lines which were ignored by accident.
2009-12-12 09:25:50 +00:00
constant-fold-compare.ll
Aggressively flip compare constant expressions where appropriate; constant
2009-12-17 06:07:04 +00:00
constant-fold-gep.ll
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
2009-11-03 15:29:06 +00:00
constant-fold-ptr-casts.ll
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CPP_min_max.ll
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crash.ll
fix PR5827 by disabling the phi slicing transformation in a case
2009-12-19 07:01:15 +00:00
dce-iterate.ll
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deadcode.ll
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dg.exp
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div-cmp-overflow.ll
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div.ll
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enforce-known-alignment.ll
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exact-sdiv.ll
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extractvalue.ll
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fold-bin-operand.ll
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
2009-11-03 15:29:06 +00:00
fold-vector-zero.ll
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fp-ret-bitcast.ll
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
2009-11-03 15:29:06 +00:00
fpcast.ll
Convert the rest of the InstCombine tests from notcast to FileCheck.
2009-10-12 07:18:14 +00:00
fpextend.ll
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fsub-fsub.ll
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getelementptr.ll
Teach ConstantFolding to do a better job when folding gep(bitcast).
2009-11-29 21:40:55 +00:00
hoist_instr.ll
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icmp.ll
enhance x-(-A) -> x+A to preserve NUW/NSW.
2009-12-21 04:04:05 +00:00
IntPtrCast.ll
Convert the rest of the InstCombine tests from notcast to FileCheck.
2009-10-12 07:18:14 +00:00
intrinsics.ll
optimize comparisons against cttz/ctlz/ctpop, patch by Alastair Lynn!
2010-01-05 18:09:56 +00:00
invariant.ll
Don't trivially delete unused calls to llvm.invariant.start. This allows
2009-11-11 15:34:13 +00:00
JavaCompare.ll
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known_align.ll
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load2.ll
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load3.ll
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load-cmp.ll
Truncate GEP indexes larger than the pointer size down to pointer size
2010-01-04 18:57:15 +00:00
load.ll
clean up tests.
2010-01-05 21:32:59 +00:00
loadstore-alignment.ll
Delete useless trailing semicolons.
2010-01-05 17:55:26 +00:00
logical-select.ll
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lshr-phi.ll
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malloc2.ll
Make changes to rev 84292 as requested by Chris Lattner.
2009-10-21 19:11:40 +00:00
malloc3.ll
Autoupgrade malloc insts to malloc calls.
2009-10-17 00:00:19 +00:00
malloc-free-delete.ll
Auto-upgrade free instructions to calls to the builtin free function.
2009-10-24 04:23:03 +00:00
malloc.ll
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memcpy-to-load.ll
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memcpy.ll
Slightly generalize transformation of memmove(a,a,n) so that it also applies
2009-12-17 21:07:31 +00:00
memmove.ll
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memset.ll
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mul-masked-bits.ll
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mul.ll
generalize a transformation even more: we don't care whether the
2009-10-11 21:29:45 +00:00
multi-use-or.ll
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narrow.ll
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no-negzero.ll
Handle sqrt in CannotBeNegativeZero. absf and absl
2009-09-25 20:54:50 +00:00
not-fcmp.ll
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not.ll
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nothrow.ll
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nsw.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.ll
implement an instcombine xform needed by clang's codegen
2010-01-04 06:03:59 +00:00
phi-merge-gep.ll
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phi.ll
enhance PHI slicing to handle the case when a slicable PHI is begin
2009-11-09 01:38:00 +00:00
pr2645-0.ll
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pr2645-1.ll
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pr2996.ll
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preserve-sminmax.ll
Convert a few tests to FileCheck for PR5307.
2009-10-26 22:52:03 +00:00
ptr-int-cast.ll
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
2009-11-03 15:29:06 +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-load-call.ll
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select.ll
add check lines for min/max tests.
2009-12-21 06:08:50 +00:00
set.ll
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setcc-strength-reduce.ll
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sext.ll
merge sext-2 into sext.ll
2009-12-02 05:34:35 +00:00
shift-simplify.ll
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shift-sra.ll
teach instcombine to delete sign extending shift pairs (sra(shl X, C), C) when
2010-01-08 19:04:21 +00:00
shift-trunc-shift.ll
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shift.ll
merge test into shift.ll, this also eliminates awful grepping on -stats output
2009-10-11 22:39:58 +00:00
shufflemask-undef.ll
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shufflevec-constant.ll
Make ConstantFoldConstantExpression recursively visit the entire
2009-11-23 16:22:21 +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
make instcombine's instruction sinking more aggressive in the
2009-10-14 15:21:58 +00:00
sitofp.ll
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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
Fix PR5471 by removing an instcombine xform. Some pieces of the code
2009-11-26 22:04:42 +00:00
sub.ll
just remove this xform which is subsumed by others.
2010-01-05 21:16:30 +00:00
trunc-mask-ext.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
make instcombine only rewrite a chain of computation
2009-11-07 19:11:46 +00:00
urem-simplify-bug.ll
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urem.ll
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vec_demanded_elts-2.ll
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vec_demanded_elts-3.ll
…
vec_demanded_elts.ll
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vec_extract_elt.ll
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vec_insertelt.ll
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vec_narrow.ll
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vec_shuffle.ll
reduce vec_shuffle2 and merge into vec_shuffle.
2009-10-11 22:54:48 +00:00
vector-casts.ll
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vector-srem.ll
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volatile_store.ll
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xor2.ll
teach instcombine to simplify xor's harder, catching the
2009-10-11 22:22:13 +00:00
xor-undef.ll
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xor.ll
…
zero-point-zero-add.ll
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zeroext-and-reduce.ll
…
zext-bool-add-sub.ll
…
zext-fold.ll
…
zext-or-icmp.ll
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zext.ll
Remove this part of the test, it never actually tested anything anyways. This
2009-10-12 06:32:42 +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.