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llvm/test/Transforms/InstCombine
History
Mon P Wang 7c4efa6808 When InstCombine simplifies a load -> extract element to gep -> load, place 
the new load by the old load instead of by the extract element because
a store could have occurred between the load and extract element.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78891 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13 05:12:13 +00:00
..
2002-03-11-InstCombineHang.ll
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2002-05-14-SubFailure.ll
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2002-05-14-TouchDeletedInst.ll
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2002-08-02-CastTest.ll
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2002-09-17-GetElementPtrCrash.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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2003-06-22-ConstantExprCrash.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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2003-10-23-InstcombineNullFail.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
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2004-01-13-InstCombineInvokePHI.ll
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2004-02-23-ShiftShiftOverflow.ll
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2004-03-13-InstCombineInfLoop.ll
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2004-04-04-InstCombineReplaceAllUsesWith.ll
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2004-05-07-UnsizedCastLoad.ll
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2004-07-27-ConstantExprMul.ll
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2004-08-09-RemInfLoop.ll
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2004-08-10-BoolSetCC.ll
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2004-09-20-BadLoadCombine2.ll
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2004-09-20-BadLoadCombine.ll
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2004-09-28-BadShiftAndSetCC.ll
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2004-11-22-Missed-and-fold.ll
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2004-11-27-SetCCForCastLargerAndConstant.ll
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2004-12-08-InstCombineCrash.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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2006-02-07-SextZextCrash.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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2006-04-01-InfLoop.ll
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2006-04-28-ShiftShiftLongLong.ll
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2006-05-04-DemandedBitCrash.ll
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2006-05-06-Infloop.ll
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2006-06-28-infloop.ll
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2006-09-11-EmptyStructCrash.ll
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2006-09-15-CastToBool.ll
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2006-10-19-SignedToUnsignedCastAndConst-2.ll
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2006-10-19-SignedToUnsignedCastAndConst.ll
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2006-10-20-mask.ll
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2006-10-26-VectorReassoc.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
2006-11-03-Memmove64.ll
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2006-11-10-ashr-miscompile.ll
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2006-11-27-XorBug.ll
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2006-12-01-BadFPVectorXform.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
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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2006-12-10-ICmp-GEP-GEP.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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2007-03-31-InfiniteLoop.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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2007-09-05-EqualGEP.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
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2007-10-12-Crash.ll
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2007-10-28-EmptyField.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
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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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2008-02-04-GEPIdxBug.ll
Teach instcombine to respect and preserve inbounds. Add inbounds
2009-07-28 01:40:03 +00:00
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
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
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
Reinstate this optimization to fold icmp of xor when possible. Don't try to
2009-01-31 21:30:05 +00:00
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
Chris prefers icmp/select over udiv!
2008-11-27 22:41:10 +00:00
2008-12-17-SRemNegConstVec.ll
Make all the vector elements positive in an srem of constant vector.
2008-12-18 06:31:11 +00:00
2009-01-05-i128-crash.ll
make m_ConstantInt(int64_t) safely match ConstantInt's that are larger than i64.
2009-01-05 23:45:50 +00:00
2009-01-08-AlignAlloca.ll
Make instcombine ensure that all allocas are explicitly aligned at at
2009-01-13 20:18:38 +00:00
2009-01-16-PointerAddrSpace.ll
Fix PR3335 by not turning a store to one address space into a store to another.
2009-01-16 20:12:52 +00:00
2009-01-19-fmod-constant-float-specials.ll
Do not use host floating point types when emitting
2009-01-21 20:32:55 +00:00
2009-01-19-fmod-constant-float.ll
Calls to fmod, it turns out, are constant-folded by
2009-01-20 21:58:13 +00:00
2009-01-24-EmptyStruct.ll
testcase for PR3381.
2009-01-24 17:16:04 +00:00
2009-01-31-InfIterate.ll
reduce testcase.
2009-02-02 06:55:45 +00:00
2009-01-31-Pressure.ll
Reinstate this optimization to fold icmp of xor when possible. Don't try to
2009-01-31 21:30:05 +00:00
2009-02-04-FPBitcast.ll
Allow the inverse transform x86_fp80 -> i80 (also
2009-02-04 11:17:06 +00:00
2009-02-20-InstCombine-SROA.ll
rename a function to indicate that it checks for profitability as well
2009-02-21 00:46:50 +00:00
2009-02-21-LoadCST.ll
Don't sign extend the char when expanding char -> int during
2009-02-21 20:50:42 +00:00
2009-02-25-CrashZeroSizeArray.ll
Fix PR3667
2009-02-25 18:20:01 +00:00
2009-03-02-VarLengthArrayGEP.ll
Fix PR3694: add an instcombine micro-optimization that helps
2009-03-02 09:18:21 +00:00
2009-03-18-vector-ashr-crash.ll
Fix PR3826 - InstComb assert with vector shift, by not calling ComputeNumSignBits on a vector.
2009-03-18 16:32:19 +00:00
2009-03-20-AShrOverShift.ll
Fix instcombine to not introduce undefined shifts when merging two
2009-03-20 22:41:15 +00:00
2009-03-24-InfLoop.ll
Fix PR3874 by restoring a condition I removed, but making it more
2009-03-25 00:28:58 +00:00
2009-04-06-GEP-Index-Crash.ll
fix rdar://6762290, a crash compiling cxx filt with clang.
2009-04-07 05:03:34 +00:00
2009-04-07-MulPromoteToI96.ll
Instcombine should not promote whole computation trees to "strange"
2009-04-08 05:41:03 +00:00
2009-05-23-FCmpToICmp.ll
Fix bug in FoldFCmp_IntToFP_Cst. If inttofp is a uintofp, use unsigned instead of signed integer constant.
2009-05-22 23:10:53 +00:00
2009-06-11-StoreAddrSpace.ll
fix testcase to properly check for the patch in r73195.
2009-06-15 05:46:02 +00:00
2009-06-16-SRemDemandedBits.ll
Correct an accidental duplication of the test (patch doesn't handle
2009-06-17 03:05:00 +00:00
2009-07-02-MaskedIntVector.ll
do not try to analyze bitcasts from i64 to <2 x i32> in ComputedMaskedBits. While
2009-07-02 16:04:08 +00:00
add2.ll
Revert the addition of hasNoPointerOverflow to GEPOperator.
2009-07-20 17:43:30 +00:00
add3.ll
Revert the addition of hasNoPointerOverflow to GEPOperator.
2009-07-20 17:43:30 +00:00
add-shrink.ll
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add-sitofp.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +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
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align-addr.ll
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align-external.ll
Don't assume that external global variables are aligned at their preferred
2009-08-11 15:50:03 +00:00
align-inc.ll
Change these tests to use regular loads instead of llvm.x86.sse2.loadu.dq.
2009-02-16 00:44:23 +00:00
alloca.ll
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and2.ll
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and-compare.ll
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and-fcmp.ll
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and-not-or.ll
simplify these patterns using m_Specific. No need to grep for
2008-12-01 05:16:26 +00:00
and-or-and.ll
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and-or-not.ll
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and-or.ll
Implement ((A|B)&1)|(B&-2) -> (A&1) | B transformation. This also takes care of
2008-12-01 01:07:11 +00:00
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-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
Instcombine was illegally transforming -X/C into X/-C when either X or C
2008-11-30 03:42:12 +00:00
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
Fix a ValueTracking rule: RHS means operand 1, not 0. Add a simple
2009-02-24 02:00:40 +00:00
binop-cast.ll
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bit-tracking.ll
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bitcast-gep.ll
Fix part 3/2 of PR3290, making instcombine zap (gep(bitcast)) when possible.
2009-01-09 05:44:56 +00:00
bitcast-scalar-to-vector.ll
Fix an instcombine abort on a scalar-to-vector bitcast. This fixes PR4487.
2009-07-01 21:38:46 +00:00
bitcast-vec-canon.ll
Canonicalize bitcasts between types like <1 x i64> and i64 to
2009-07-18 23:06:53 +00:00
bitcast-vector-fold.ll
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bitcount.ll
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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
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canonicalize_branch.ll
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cast2.ll
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cast3.ll
Add a testcase for PR2831.
2009-07-21 01:02:18 +00:00
cast_ld_addr_space.ll
Instrcombine should not change load(cast p) to cast(load p) if the cast
2009-02-07 22:19:29 +00:00
cast_ptr.ll
Revert the addition of hasNoPointerOverflow to GEPOperator.
2009-07-20 17:43:30 +00:00
cast-and-cast.ll
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cast-cast-to-and.ll
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cast-load-gep.ll
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cast-malloc.ll
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cast-mul-select.ll
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cast-propagate.ll
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cast-set.ll
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cast-sext-zext.ll
Fix PR3452 (an infinite loop bootstrapping) by disabling the recent
2009-01-31 19:05:27 +00:00
cast-store-gep.ll
Make InstCombineStoreToCast handle aggregates more aggressively,
2009-01-24 01:00:13 +00:00
cast.ll
Clean up previous cast optimization a bit. Also make zext elimination a bit more aggressive: if it's not necessary to emit an AND (i.e. high bits are already zero), it's profitable to evaluate the operand at a different type.
2009-01-16 02:11:43 +00:00
constant-fold-ptr-casts.ll
Revert 71165. It did more than just revert 71158 and it introduced
2009-05-07 19:46:24 +00:00
CPP_min_max.ll
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dce-iterate.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
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
Change the argument type in this test to something less convoluted,
2009-02-18 04:25:04 +00:00
exact-sdiv.ll
Optimize (x/C)*C to x if the division is exact.
2009-08-12 16:33:09 +00:00
extractvalue.ll
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fold-bin-operand.ll
Don't restrict the set of instructions where we try to constant-fold the
2009-07-15 22:13:34 +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
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
fsub-fsub.ll
Don't do (x - (y - z)) --> (x + (z - y)) on floating-point types, because
2009-06-12 19:23:25 +00:00
GEPIdxCanon.ll
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getelementptr_cast.ll
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getelementptr_const.ll
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getelementptr_index.ll
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getelementptr_promote.ll
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getelementptr-setcc.ll
Teach instcombine to respect and preserve inbounds. Add inbounds
2009-07-28 01:40:03 +00:00
getelementptr-seteq.ll
Teach instcombine to respect and preserve inbounds. Add inbounds
2009-07-28 01:40:03 +00:00
getelementptr.ll
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hoist_instr.ll
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icmp.ll
Implement rdar://6480391, extending of equality icmp's to avoid a truncation.
2009-01-09 07:47:06 +00:00
IntPtrCast.ll
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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.ll
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loadstore-alignment.ll
Make instcombine ensure that all allocas are explicitly aligned at at
2009-01-13 20:18:38 +00:00
logical-select.ll
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lshr-phi.ll
Teach ValueTracking a new way to analyze PHI nodes, and and teach
2009-05-21 02:28:33 +00:00
malloc2.ll
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malloc3.ll
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malloc-free-delete.ll
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malloc.ll
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memcpy-to-load.ll
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memmove.ll
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memset.ll
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mul-masked-bits.ll
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mul.ll
Fix trivial todo in instcombine.
2009-07-14 02:01:53 +00:00
multi-use-or.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
narrow.ll
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not-fcmp.ll
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not.ll
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nothrow.ll
calls in nothrow functions can be marked nothrow even if the callee
2009-05-13 17:39:14 +00:00
nsw.ll
Transform -X/C to X/-C, implementing a README.txt entry.
2009-08-12 16:37:02 +00:00
odr-linkage.ll
Add a new "available_externally" linkage type. This is intended
2009-04-13 05:44:34 +00:00
or2.ll
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or-fcmp.ll
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or-to-xor.ll
Use m_Specific() instead of double matching.
2008-12-01 08:09:47 +00:00
or.ll
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phi-merge.ll
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phi.ll
Teach inst combine to merge GEPs through PHIs. This is really
2008-12-01 02:34:36 +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
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ptr-int-cast.ll
canonicalize inttoptr and ptrtoint instructions which cast pointers
2009-03-24 18:35:40 +00:00
README.txt
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rem.ll
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sdiv-1.ll
Strengthen check for div inst-combining.
2008-11-30 04:33:53 +00:00
sdiv-2.ll
getSExtValue() doesn't work for ConstantInts with bitwidth > 64 bits. Use all
2008-11-30 12:38:24 +00:00
sdiv-shift.ll
Add combine: X sdiv (1 << Y) -> X udiv (1 << Y) when X doesn't have the
2009-07-18 09:53:21 +00:00
select-2.ll
Throttle back "fold select into operand" transformation. InstCombine should not generate selects of two constants unless they are selects of 0 and 1.
2009-03-31 20:42:45 +00:00
select-load-call.ll
Testcase for r73506
2009-06-16 17:23:25 +00:00
select.ll
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set.ll
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setcc-cast-cast.ll
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setcc-strength-reduce.ll
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sext-misc.ll
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shift-simplify.ll
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shift-sra.ll
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shift-trunc-shift.ll
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shift.ll
two changes:
2009-03-24 18:15:30 +00:00
shl-icmp.ll
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shl-trunc.ll
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shufflemask-undef.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
shufflevec-constant.ll
Add suppport for ConstantExprs of shufflevectors whose result type is not equal to the
2009-02-12 21:28:33 +00:00
signed-comparison.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
signext.ll
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simplify-demanded-bits-pointer.ll
Add -disable-output. Thanks Bill!
2009-08-03 22:24:22 +00:00
sink_instruction.ll
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sitofp.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +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
Add a testcase for the problem fixed in r65289.
2009-02-24 02:17:42 +00:00
stacksaverestore.ll
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store-merge.ll
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store.ll
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sub.ll
Instcombine was illegally transforming -X/C into X/-C when either X or C
2008-11-30 03:42:12 +00:00
trunc-mask-ext.ll
Generalize the zext(trunc(t) & C) instcombine to work even with
2009-06-18 16:30:21 +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
Chris prefers icmp/select over udiv!
2008-11-27 22:41:10 +00:00
udivrem-change-width.ll
PR4548: optimize zext+udiv+trunc to udiv.
2009-07-13 22:46:01 +00:00
urem-simplify-bug.ll
Make LLVM Assembly dramatically easier to read by aligning the comments,
2009-08-12 17:23:50 +00:00
urem.ll
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vec_demanded_elts-2.ll
APInt'fy SimplifyDemandedVectorElts so it can analyze vectors with more than 64 elements.
2009-02-03 10:05:09 +00:00
vec_demanded_elts-3.ll
PR4340: Run SimplifyDemandedVectorElts on insertelement instructions;
2009-06-06 20:08:03 +00:00
vec_demanded_elts.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
vec_extract_elt2.ll
When InstCombine simplifies a load -> extract element to gep -> load, place
2009-08-13 05:12:13 +00:00
vec_extract_elt.ll
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vec_insert_to_shuffle.ll
…
vec_insertelt.ll
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vec_narrow.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
vec_shuffle2.ll
Fixed optimization of combining two shuffles where the first shuffle inputs
2009-01-26 04:39:00 +00:00
vec_shuffle.ll
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vector-casts.ll
merge vector-casts-0.ll into vector-casts.ll
2009-07-23 05:33:39 +00:00
vector-srem.ll
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volatile_store.ll
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xor2.ll
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xor-demorgans.ll
XFAIL this test. The xform was removed.
2009-01-04 06:32:28 +00:00
xor-undef.ll
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xor.ll
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zero-point-zero-add.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
zeroext-and-reduce.ll
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zext-bool-add-sub.ll
Fix bug in run-line.
2009-07-13 22:31:30 +00:00
zext-fold.ll
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zext-or-icmp.ll
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zext.ll
commit a tweaked version of Daniel's patch for PR3599. We now
2009-02-17 20:47:23 +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.