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llvm-6502/test/Transforms/InstCombine
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Dan Gohman 3d01334e6f Fix a bug in the over-index constant folding. When over-indexing an 
array member of a struct, it's possible to land in an arbitrary position
inside that struct, such that attempting to find further getelementptr
indices will fail. In such cases, folding cannot be done.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79485 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-19 22:46:59 +00:00
..
2002-03-11-InstCombineHang.ll
Remove llvm-upgrade and update test cases.
2008-03-01 09:15:35 +00:00
2002-05-14-SubFailure.ll
…
2002-05-14-TouchDeletedInst.ll
…
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
…
2004-08-09-RemInfLoop.ll
…
2004-08-10-BoolSetCC.ll
Remove llvm-upgrade and update test cases.
2008-03-01 09:15:35 +00:00
2004-09-20-BadLoadCombine2.ll
Update old-style syntax in some "not grep" tests.
2008-05-01 23:50:07 +00:00
2004-09-20-BadLoadCombine.ll
rename *.llx -> *.ll, last batch.
2008-04-19 22:32:52 +00:00
2004-09-28-BadShiftAndSetCC.ll
rename *.llx -> *.ll, last batch.
2008-04-19 22:32:52 +00:00
2004-11-22-Missed-and-fold.ll
…
2004-11-27-SetCCForCastLargerAndConstant.ll
Eliminate questionable syntax for stdin redirection. This probably also speeds things up a bit.
2008-05-20 22:07:21 +00:00
2004-12-08-InstCombineCrash.ll
…
2004-12-08-RemInfiniteLoop.ll
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2005-03-04-ShiftOverflow.ll
Remove llvm-upgrade and update test cases.
2008-03-01 09:15:35 +00:00
2005-04-07-UDivSelectCrash.ll
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2005-06-15-DivSelectCrash.ll
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2005-06-15-ShiftSetCCCrash.ll
Remove llvm-upgrade and update test cases.
2008-03-01 09:15:35 +00:00
2005-06-16-RangeCrash.ll
…
2005-06-16-SetCCOrSetCCMiscompile.ll
Remove llvm-upgrade and update test cases.
2008-03-01 09:15:35 +00:00
2005-07-07-DeadPHILoop.ll
…
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
Remove llvm-upgrade and update test cases.
2008-03-01 09:15:35 +00:00
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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2006-11-27-XorBug.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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2006-12-10-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
For PR761:
2007-01-26 08:25:06 +00:00
2007-01-27-AndICmp.ll
For PR1319:
2007-04-14 20:13:02 +00:00
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
this xform is correct, not an xfail
2007-04-08 08:02:39 +00:00
2007-03-21-SignedRangeTest.ll
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2007-03-25-BadShiftMask.ll
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2007-03-25-DoubleShift.ll
Add a test case for PR1271 (necessary, but not sufficient).
2007-03-25 21:30:41 +00:00
2007-03-26-BadShiftMask.ll
For PR1319:
2007-04-15 07:38:21 +00:00
2007-03-27-PR1280.ll
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2007-03-31-InfiniteLoop.ll
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2007-04-04-BadFoldBitcastIntoMalloc.ll
For PR1319:
2007-04-16 17:36:08 +00:00
2007-04-08-SingleEltVectorCrash.ll
…
2007-05-04-Crash.ll
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2007-05-10-icmp-or.ll
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2007-05-14-Crash.ll
New testcase that crashes instcombine
2007-05-15 00:15:49 +00:00
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
Fix a buggy constant folding transformation when handling aliases.
2007-09-10 23:42:42 +00:00
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
Fix InstCombine/2007-10-31-RangeCrash.ll
2007-11-01 02:18:41 +00:00
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
Fix PR1907, a nasty miscompilation because instcombine didn't
2008-01-13 20:59:02 +00:00
2008-01-13-NoBitCastAttributes.ll
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2008-01-14-DoubleNest.ll
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2008-01-14-VarArgTrampoline.ll
I noticed that the trampoline straightening transformation could
2008-01-14 19:52:09 +00:00
2008-01-21-MismatchedCastAndCompare.ll
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2008-01-21-MulTrunc.ll
Multiply can be evaluated in a different type, so long as the target type has
2008-01-22 05:08:48 +00:00
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
Commit the testcase too.
2008-03-06 06:50:03 +00:00
2008-02-16-SDivOverflow2.ll
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2008-02-16-SDivOverflow.ll
Correctly fold divide-by-constant, even when faced with overflow.
2008-02-18 22:48:05 +00:00
2008-02-23-MulSub.ll
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2008-02-28-OrFCmpCrash.ll
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2008-03-13-IntToPtr.ll
The inst combining of inttoptr into GEP with one index was using the bit size of
2008-03-14 05:12:19 +00:00
2008-04-22-ByValBitcast.ll
…
2008-04-28-VolatileStore.ll
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2008-04-29-VolatileLoadDontMerge.ll
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2008-04-29-VolatileLoadMerge.ll
…
2008-05-08-LiveStoreDelete.ll
Make instcombine's DSE respect loads as well as stores. It is not safe to
2008-05-08 17:20:30 +00:00
2008-05-08-StrLenSink.ll
More than just loads can read from memory: readonly calls like strlen
2008-05-08 17:37:37 +00:00
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
Fix a serious brain-o. Obviously no-one reviewed my patch :(
2008-05-24 04:06:28 +00:00
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
Fix overzealous optimization. Thanks to Duncan Sands for pointing out my error!
2008-07-10 05:51:40 +00:00
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
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2008-09-02-VectorCrash.ll
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2008-09-29-FoldingOr.ll
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2008-10-11-DivCompareFold.ll
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2008-10-23-ConstFoldWithoutMask.ll
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2008-11-01-SRemDemandedBits.ll
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2008-11-08-FCmp.ll
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2008-11-20-DivMulRem.ll
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2008-11-27-IDivVector.ll
Add a couple of missed optimizations on integer vectors. Multiply and divide
2008-11-27 20:21:08 +00:00
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
…
2009-01-05-i128-crash.ll
…
2009-01-08-AlignAlloca.ll
…
2009-01-16-PointerAddrSpace.ll
…
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
testcase for PR3381.
2009-01-24 17:16:04 +00:00
2009-01-31-InfIterate.ll
…
2009-01-31-Pressure.ll
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2009-02-04-FPBitcast.ll
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2009-02-20-InstCombine-SROA.ll
…
2009-02-21-LoadCST.ll
…
2009-02-25-CrashZeroSizeArray.ll
Fix PR3667
2009-02-25 18:20:01 +00:00
2009-03-02-VarLengthArrayGEP.ll
…
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
…
2009-03-24-InfLoop.ll
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2009-04-06-GEP-Index-Crash.ll
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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
…
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
Teach instcombine 4 new xforms:
2008-05-20 05:46:13 +00:00
add-sitofp.ll
…
add.ll
…
addnegneg.ll
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adjust-for-sminmax.ll
…
align-2d-gep.ll
…
align-addr.ll
…
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
…
alloca.ll
Remove llvm-upgrade and update tests.
2008-03-09 08:16:40 +00:00
and2.ll
…
and-compare.ll
…
and-fcmp.ll
…
and-not-or.ll
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and-or-and.ll
…
and-or-not.ll
…
and-or.ll
…
and-xor-merge.ll
…
and.ll
…
apint-add1.ll
…
apint-add2.ll
For PR1319:
2007-04-15 07:38:21 +00:00
apint-and1.ll
…
apint-and2.ll
For PR1319:
2007-04-15 07:38:21 +00:00
apint-and-compare.ll
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apint-and-or-and.ll
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apint-and-xor-merge.ll
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apint-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
…
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
Remove use of implementation keyword.
2007-03-28 02:38:26 +00:00
apint-or2.ll
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apint-rem1.ll
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apint-rem2.ll
…
apint-select.ll
…
apint-shift-simplify.ll
…
apint-shift.ll
…
apint-shl-trunc.ll
…
apint-sub.ll
…
apint-xor1.ll
…
apint-xor2.ll
…
apint-zext1.ll
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apint-zext2.ll
…
ashr-nop.ll
…
binop-cast.ll
Fix a test test llvm.exp found.
2007-04-14 18:33:31 +00:00
bit-tracking.ll
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bitcast-gep.ll
…
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
…
bitcount.ll
…
bittest.ll
…
bswap-fold.ll
…
bswap.ll
…
call2.ll
…
call-cast-target.ll
…
call-intrinsics.ll
…
call.ll
…
canonicalize_branch.ll
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cast2.ll
…
cast3.ll
Add a testcase for PR2831.
2009-07-21 01:02:18 +00:00
cast_ld_addr_space.ll
…
cast_ptr.ll
Revert the addition of hasNoPointerOverflow to GEPOperator.
2009-07-20 17:43:30 +00:00
cast-and-cast.ll
Remove llvm-upgrade and update tests.
2008-03-09 08:16:40 +00:00
cast-cast-to-and.ll
…
cast-load-gep.ll
…
cast-malloc.ll
…
cast-mul-select.ll
…
cast-propagate.ll
…
cast-set.ll
…
cast-sext-zext.ll
…
cast-store-gep.ll
…
cast.ll
…
constant-fold-gep-overindex.ll
Fix a bug in the over-index constant folding. When over-indexing an
2009-08-19 22:46:59 +00:00
constant-fold-gep.ll
Canonicalize indices in a constantexpr GEP. If Indices exceed the
2009-08-19 18:18:36 +00:00
constant-fold-ptr-casts.ll
…
CPP_min_max.ll
…
dce-iterate.ll
…
deadcode.ll
…
dg.exp
…
div-cmp-overflow.ll
…
div.ll
…
enforce-known-alignment.ll
…
exact-sdiv.ll
Optimize (x/C)*C to x if the division is exact.
2009-08-12 16:33:09 +00:00
extractvalue.ll
…
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
…
fp-ret-bitcast.ll
…
fpcast.ll
Remove llvm-upgrade and update tests.
2008-03-09 08:16:40 +00:00
fpextend.ll
Split the Add, Sub, and Mul instruction opcodes into separate
2009-06-04 22:49:04 +00:00
fsub-fsub.ll
…
GEPIdxCanon.ll
Remove GCSE and LoadVN from the testsuite.
2008-08-16 00:00:54 +00:00
getelementptr_cast.ll
…
getelementptr_const.ll
…
getelementptr_index.ll
…
getelementptr_promote.ll
…
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
…
hoist_instr.ll
…
icmp.ll
Implement rdar://6480391, extending of equality icmp's to avoid a truncation.
2009-01-09 07:47:06 +00:00
IntPtrCast.ll
…
JavaCompare.ll
…
known_align.ll
…
load2.ll
…
load3.ll
…
load.ll
…
loadstore-alignment.ll
…
logical-select.ll
…
lshr-phi.ll
…
malloc2.ll
For PR1319:
2007-04-14 20:13:02 +00:00
malloc3.ll
testcase for PR1728
2007-10-12 05:29:53 +00:00
malloc-free-delete.ll
…
malloc.ll
…
memcpy-to-load.ll
…
memmove.ll
…
memset.ll
…
mul-masked-bits.ll
…
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
…
not-fcmp.ll
…
not.ll
Implement PR2298. This transforms:
2008-05-09 05:19:28 +00:00
nothrow.ll
…
nsw.ll
Transform -X/C to X/-C, implementing a README.txt entry.
2009-08-12 16:37:02 +00:00
odr-linkage.ll
…
or2.ll
…
or-fcmp.ll
Combine (fcmp cc0 x, y) | (fcmp cc1 x, y) into a single fcmp when possible.
2008-10-14 18:44:08 +00:00
or-to-xor.ll
…
or.ll
…
phi-merge.ll
…
phi.ll
…
pr2645-0.ll
…
pr2645-1.ll
…
pr2996.ll
…
preserve-sminmax.ll
…
ptr-int-cast.ll
…
README.txt
*** empty log message ***
2002-08-03 20:24:45 +00:00
rem.ll
…
sdiv-1.ll
Strengthen check for div inst-combining.
2008-11-30 04:33:53 +00:00
sdiv-2.ll
…
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
…
select-load-call.ll
Testcase for r73506
2009-06-16 17:23:25 +00:00
select.ll
…
set.ll
…
setcc-cast-cast.ll
…
setcc-strength-reduce.ll
…
sext-misc.ll
…
shift-simplify.ll
…
shift-sra.ll
…
shift-trunc-shift.ll
…
shift.ll
…
shl-icmp.ll
Don't do: "(X & 4) >> 1 == 2 --> (X & 4) == 4" if there are more than one uses of the shift result.
2008-04-23 00:38:06 +00:00
shl-trunc.ll
Remove llvm-upgrade and update test cases.
2008-03-01 09:15:35 +00:00
shufflemask-undef.ll
…
shufflevec-constant.ll
…
signed-comparison.ll
…
signext.ll
…
simplify-demanded-bits-pointer.ll
Add -disable-output. Thanks Bill!
2009-08-03 22:24:22 +00:00
sink_instruction.ll
…
sitofp.ll
…
srem1.ll
…
srem-simplify-bug.ll
…
srem.ll
…
stack-overalign.ll
Add a testcase for the problem fixed in r65289.
2009-02-24 02:17:42 +00:00
stacksaverestore.ll
…
store-merge.ll
…
store.ll
…
sub.ll
…
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
Fix PR2506 by being a bit more careful about reverse fact propagation when
2008-07-14 00:15:52 +00:00
udiv-simplify-bug-0.ll
…
udiv-simplify-bug-1.ll
…
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
…
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
…
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
…
vec_insert_to_shuffle.ll
Remove llvm-upgrade and update tests.
2008-03-09 08:16:40 +00:00
vec_insertelt.ll
…
vec_narrow.ll
…
vec_shuffle2.ll
…
vec_shuffle.ll
…
vector-casts.ll
merge vector-casts-0.ll into vector-casts.ll
2009-07-23 05:33:39 +00:00
vector-srem.ll
…
volatile_store.ll
…
xor2.ll
…
xor-demorgans.ll
…
xor-undef.ll
…
xor.ll
…
zero-point-zero-add.ll
…
zeroext-and-reduce.ll
…
zext-bool-add-sub.ll
Fix bug in run-line.
2009-07-13 22:31:30 +00:00
zext-fold.ll
…
zext-or-icmp.ll
Transform (zext (or (icmp), (icmp))) to (or (zext (cimp), (zext icmp))) if at least one of the (zext icmp) can be transformed to eliminate an icmp.
2008-03-24 00:21:34 +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.