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llvm-6502/test/Transforms/InstCombine
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Owen Anderson ec3953ff95 When determining if we can fold (x >> C1) << C2, the bits that we need to verify are zero 
are not the low bits of x, but the bits that WILL be the low bits after the operation completes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122529 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 23:56:24 +00:00
..
2002-03-11-InstCombineHang.ll
2002-05-14-SubFailure.ll
2002-08-02-CastTest.ll
2002-12-05-MissedConstProp.ll
2003-05-26-CastMiscompile.ll
2003-05-27-ConstExprCrash.ll
2003-06-05-BranchInvertInfLoop.ll
2003-07-21-ExternalConstant.ll
2003-08-12-AllocaNonNull.ll remove a use of llvm-dis 2010-11-30 02:04:15 +00:00
2003-09-09-VolatileLoadElim.ll
2003-10-29-CallSiteResolve.ll
2003-11-03-VarargsCallBug.ll
2003-11-13-ConstExprCastCall.ll
2004-01-13-InstCombineInvokePHI.ll
2004-02-23-ShiftShiftOverflow.ll
2004-03-13-InstCombineInfLoop.ll
2004-04-04-InstCombineReplaceAllUsesWith.ll
2004-05-07-UnsizedCastLoad.ll
2004-07-27-ConstantExprMul.ll
2004-08-09-RemInfLoop.ll
2004-08-10-BoolSetCC.ll
2004-09-20-BadLoadCombine2.ll
2004-09-20-BadLoadCombine.ll
2004-09-28-BadShiftAndSetCC.ll
2004-11-22-Missed-and-fold.ll
2004-11-27-SetCCForCastLargerAndConstant.ll
2004-12-08-RemInfiniteLoop.ll
2005-03-04-ShiftOverflow.ll
2005-04-07-UDivSelectCrash.ll
2005-06-15-DivSelectCrash.ll
2005-06-15-ShiftSetCCCrash.ll
2005-06-16-RangeCrash.ll
2005-06-16-SetCCOrSetCCMiscompile.ll
2005-07-07-DeadPHILoop.ll
2006-02-13-DemandedMiscompile.ll
2006-02-28-Crash.ll
2006-03-30-ExtractElement.ll
2006-04-28-ShiftShiftLongLong.ll
2006-05-04-DemandedBitCrash.ll
2006-09-15-CastToBool.ll
2006-10-19-SignedToUnsignedCastAndConst-2.ll
2006-10-20-mask.ll
2006-10-26-VectorReassoc.ll
2006-11-03-Memmove64.ll
2006-11-10-ashr-miscompile.ll
2006-12-01-BadFPVectorXform.ll
2006-12-05-fp-to-int-ext.ll
2006-12-08-Phi-ICmp-Op-Fold.ll
2006-12-08-Select-ICmp.ll
2006-12-15-Range-Test.ll
2006-12-23-Select-Cmp-Cmp.ll
2007-01-13-ExtCompareMiscompile.ll
2007-01-14-FcmpSelf.ll
2007-01-18-VectorInfLoop.ll
2007-01-27-AndICmp.ll
2007-02-01-LoadSinkAlloca.ll
2007-02-07-PointerCast.ll
2007-02-23-PhiFoldInfLoop.ll
2007-03-13-CompareMerge.ll
2007-03-19-BadTruncChangePR1261.ll
2007-03-21-SignedRangeTest.ll
2007-03-25-BadShiftMask.ll
2007-03-25-DoubleShift.ll
2007-03-26-BadShiftMask.ll
2007-04-04-BadFoldBitcastIntoMalloc.ll
2007-04-08-SingleEltVectorCrash.ll
2007-05-04-Crash.ll
2007-05-10-icmp-or.ll
2007-05-14-Crash.ll
2007-05-18-CastFoldBug.ll
2007-06-06-AshrSignBit.ll
2007-06-21-DivCompareMiscomp.ll
2007-08-02-InfiniteLoop.ll
2007-09-10-AliasConstFold.ll
2007-09-11-Trampoline.ll
2007-09-17-AliasConstFold2.ll
2007-10-10-EliminateMemCpy.ll
2007-10-12-Crash.ll
2007-10-28-stacksave.ll
2007-10-31-RangeCrash.ll
2007-10-31-StringCrash.ll
2007-11-07-OpaqueAlignCrash.ll
2007-11-15-CompareMiscomp.ll
2007-11-22-IcmpCrash.ll
2007-11-25-CompatibleAttributes.ll
2007-12-10-ConstFoldCompare.ll
2007-12-12-GEPScale.ll
2007-12-16-AsmNoUnwind.ll
2007-12-18-AddSelCmpSub.ll
2007-12-28-IcmpSub2.ll add newlines at the end of files. 2010-04-07 22:53:17 +00:00
2008-01-06-BitCastAttributes.ll
2008-01-06-CastCrash.ll
2008-01-06-VoidCast.ll
2008-01-13-AndCmpCmp.ll
2008-01-13-NoBitCastAttributes.ll
2008-01-14-DoubleNest.ll
2008-01-14-VarArgTrampoline.ll
2008-01-21-MismatchedCastAndCompare.ll
2008-01-21-MulTrunc.ll
2008-01-27-FloatSelect.ll
2008-01-29-AddICmp.ll
2008-02-13-MulURem.ll
2008-02-16-SDivOverflow2.ll
2008-02-16-SDivOverflow.ll
2008-02-23-MulSub.ll
2008-02-28-OrFCmpCrash.ll
2008-03-13-IntToPtr.ll
2008-04-22-ByValBitcast.ll
2008-04-28-VolatileStore.ll
2008-04-29-VolatileLoadDontMerge.ll
2008-04-29-VolatileLoadMerge.ll
2008-05-08-LiveStoreDelete.ll
2008-05-08-StrLenSink.ll
2008-05-09-SinkOfInvoke.ll
2008-05-17-InfLoop.ll
2008-05-18-FoldIntToPtr.ll
2008-05-22-IDivVector.ll
2008-05-22-NegValVector.ll
2008-05-23-CompareFold.ll
2008-05-31-AddBool.ll
2008-05-31-Bools.ll
2008-06-05-ashr-crash.ll
2008-06-08-ICmpPHI.ll
2008-06-13-InfiniteLoopStore.ll
2008-06-13-ReadOnlyCallStore.ll
2008-06-19-UncondLoad.ll
2008-06-21-CompareMiscomp.ll
2008-06-24-StackRestore.ll
2008-07-08-AndICmp.ll
2008-07-08-ShiftOneAndOne.ll
2008-07-08-SubAnd.ll
2008-07-08-VolatileLoadMerge.ll
2008-07-09-SubAndError.ll
2008-07-10-CastSextBool.ll
2008-07-10-ICmpBinOp.ll
2008-07-11-RemAnd.ll
2008-07-13-DivZero.ll
2008-07-16-fsub.ll
2008-07-16-sse2_storel_dq.ll
2008-08-05-And.ll
2008-08-17-ICmpXorSignbit.ll
2008-09-02-VectorCrash.ll
2008-09-29-FoldingOr.ll
2008-10-11-DivCompareFold.ll
2008-10-23-ConstFoldWithoutMask.ll
2008-11-01-SRemDemandedBits.ll
2008-11-08-FCmp.ll
2008-11-20-DivMulRem.ll
2008-11-27-IDivVector.ll
2008-11-27-MultiplyIntVec.ll
2008-11-27-UDivNegative.ll
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 Teach APFloat how to create both QNaNs and SNaNs and with arbitrary-width 2010-02-28 02:51:25 +00:00
2009-01-19-fmod-constant-float.ll
2009-01-24-EmptyStruct.ll
2009-01-31-InfIterate.ll
2009-01-31-Pressure.ll
2009-02-04-FPBitcast.ll
2009-02-20-InstCombine-SROA.ll
2009-02-21-LoadCST.ll
2009-02-25-CrashZeroSizeArray.ll
2009-03-18-vector-ashr-crash.ll
2009-03-20-AShrOverShift.ll
2009-03-24-InfLoop.ll
2009-04-07-MulPromoteToI96.ll
2009-05-23-FCmpToICmp.ll
2009-06-11-StoreAddrSpace.ll
2009-06-16-SRemDemandedBits.ll
2009-07-02-MaskedIntVector.ll
2009-12-17-CmpSelectNull.ll
2010-01-28-NegativeSRem.ll
2010-03-03-ExtElim.ll Make the 'icmp pred trunc(ext(X)), CST --> icmp pred X, ext(trunc(CST))' 2010-03-04 06:54:10 +00:00
2010-11-01-lshr-mask.ll Have SimplifyBinOp dispatch Xor, Add and Sub to the corresponding methods 2010-12-20 14:47:04 +00:00
2010-11-21-SizeZeroTypeGEP.ll If a GEP index simply advances by multiples of a type of zero size, 2010-11-22 16:32:50 +00:00
2010-11-23-Distributed.ll Add a generic expansion transform: A op (B op' C) -> (A op B) op' (A op C) 2010-12-22 13:36:08 +00:00
add2.ll
add3.ll
add-shrink.ll
add-sitofp.ll
add.ll
addnegneg.ll
adjust-for-sminmax.ll
align-2d-gep.ll
align-addr.ll Make instcombine set explicit alignments on load or store 2010-08-03 18:20:32 +00:00
align-external.ll
alloca.ll Teach instcombine to promote alloca array sizes. 2010-05-28 15:09:00 +00:00
and2.ll Teach InstructionSimplify to fold (A & B) & A -> A & B and (A | B) | A -> A | B. 2010-09-10 22:39:55 +00:00
and-compare.ll
and-fcmp.ll
and-not-or.ll
and-or-and.ll
and-or-not.ll
and-or.ll
and-xor-merge.ll
and.ll
apint-add1.ll
apint-add2.ll
apint-and1.ll
apint-and2.ll
apint-and-compare.ll
apint-and-or-and.ll
apint-and-xor-merge.ll
apint-call-cast-target.ll
apint-cast-and-cast.ll
apint-cast-cast-to-and.ll
apint-cast.ll
apint-div1.ll
apint-div2.ll
apint-mul1.ll
apint-mul2.ll
apint-not.ll
apint-or1.ll
apint-or2.ll
apint-rem1.ll
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
apint-zext2.ll
ashr-nop.ll
badmalloc.ll Teach instCombine to remove malloc+free if malloc's only uses are comparisons 2010-05-27 19:09:06 +00:00
binop-cast.ll
bit-checks.ll Generalize instcombine's support for combining multiple bit checks into a single test. Patch by Dirk Steinke! 2010-09-08 22:16:17 +00:00
bit-tracking.ll
bitcast-sext-vector.ll
bitcast-store.ll Fix a case where instcombine was stripping metadata (and alignment) 2010-10-25 16:16:27 +00:00
bitcast-vec-canon.ll
bitcast-vector-fold.ll
bitcast.ll handle the constant case of vector insertion. For something 2010-08-28 01:50:57 +00:00
bitcount.ll
bittest.ll
bswap-fold.ll Fold bswap(undef) to undef. 2010-02-17 00:54:58 +00:00
bswap.ll
call2.ll
call-cast-target.ll
call-intrinsics.ll
call.ll Remove arm_apcscc from the test files. It is the default and doing this 2010-06-17 15:18:27 +00:00
canonicalize_branch.ll
cast_ptr.ll
cast-mul-select.ll
cast-set.ll
cast.ll Re-apply r113679, which was reverted in r113720, which added a paid of new instcombine transforms 2010-09-13 17:59:27 +00:00
compare-signs.ll
constant-fold-compare.ll
constant-fold-gep.ll
CPP_min_max.ll
crash.ll fix PR8807 by making transformConstExprCastCall aware of byval arguments. 2010-12-20 08:36:38 +00:00
dce-iterate.ll
deadcode.ll
dg.exp
div-cmp-overflow.ll
div.ll
enforce-known-alignment.ll
exact-sdiv.ll
extractvalue.ll Transform (extractvalue (load P), ...) to (load (gep P, 0, ...)) if the load has no other uses, shrinking the load. 2010-11-29 21:56:20 +00:00
fcmp-select.ll Don't do (X != Y) ? X : Y -> X for floating-point values; it doesn't 2010-02-23 17:17:57 +00:00
fcmp-special.ll Constant-fold certain comparisons with infinity and negative infinity. 2010-02-22 04:06:03 +00:00
fold-bin-operand.ll
fold-calls.ll Don't try to constant fold libm functions with non-finite arguments. 2010-09-27 21:29:20 +00:00
fold-vector-zero.ll
fp-ret-bitcast.ll
fpcast.ll
fpextend.ll
fsub.ll
gepgep.ll When constant folding GEP of GEP, do not crash if an index of 2010-03-12 17:55:20 +00:00
getelementptr.ll Add a testcase for getelementptr index promotion. 2010-05-28 15:07:59 +00:00
hoist_instr.ll
icmp.ll duncan's spider sense was right, I completely reversed the condition 2010-11-23 02:42:04 +00:00
idioms.ll
IntPtrCast.ll
intrinsics.ll X86 supports i8/i16 overflow ops (except i8 multiplies), we should 2010-12-19 20:03:11 +00:00
invariant.ll Print empty structs as {} rather than { }. 2010-04-08 18:03:05 +00:00
JavaCompare.ll make these less sensitive to temporary naming. 2010-03-05 08:43:33 +00:00
known_align.ll
load3.ll fix PR7429, a crash turning a load from a string into a float. 2010-07-12 00:22:51 +00:00
load-cmp.ll make these less sensitive to temporary naming. 2010-03-05 08:43:33 +00:00
load-select.ll
load.ll merge two tests. 2010-07-12 00:19:47 +00:00
loadstore-alignment.ll
logical-select.ll
lshr-phi.ll
malloc2.ll
malloc3.ll
malloc-free-delete.ll Teach instCombine to remove malloc+free if malloc's only uses are comparisons 2010-05-27 19:09:06 +00:00
malloc.ll
memcpy-to-load.ll
memcpy.ll fix PR8267 - Instcombine shouldn't optimizer away volatile memcpy's. 2010-10-01 05:51:02 +00:00
memmove.ll
memset2.ll Test case for r122215 when InstCombine optimizes memset 2010-12-20 01:06:23 +00:00
memset_chk.ll Reapply address space patch after fixing an issue in MemCopyOptimizer. 2010-04-04 03:10:48 +00:00
memset.ll
mul-masked-bits.ll
mul.ll
multi-use-or.ll Floating-point add, sub, and mul are now spelled fadd, fsub, and fmul, 2010-03-02 01:11:08 +00:00
narrow.ll
neon-intrinsics.ll Teach instcombine to set the alignment arguments for NEON load/store intrinsics. 2010-10-22 21:41:48 +00:00
no-negzero.ll
not-fcmp.ll
not.ll
nothrow.ll
nsw.ll
objsize.ll Fix declarations in a few more tests. 2010-04-17 21:29:25 +00:00
odr-linkage.ll add newlines at the end of files. 2010-04-07 22:53:17 +00:00
or-fcmp.ll
or-to-xor.ll
or.ll Teach InstCombine to merge (icmp ult (X + CA), C1) | (icmp eq X, C2) into (icmp ult (X + CA), C1 + 1) if C2 + CA == C1. 2010-12-20 16:18:51 +00:00
overflow.ll recognize an unsigned add with overflow idiom into uadd. 2010-12-19 19:37:52 +00:00
phi-merge-gep.ll
phi.ll In which I discover the existence of loops. Threading an operation 2010-11-16 12:16:38 +00:00
pr2645-0.ll
pr2645-1.ll
pr2996.ll
pr8547.ll When checking that the necessary bits are zero in 2010-11-10 01:30:56 +00:00
preserve-sminmax.ll
ptr-int-cast.ll Convert this test to FileCheck and add a testcase for PR3574. 2010-02-23 01:28:09 +00:00
README.txt
rem.ll InstCombine: Add a missing irem identity (X % X -> 0). 2010-11-17 19:11:46 +00:00
sdiv-1.ll
sdiv-2.ll
sdiv-shift.ll
select-2.ll
select-crash.ll Teach InstCombine not to use Add and Neg on FP. PR 8490. 2010-10-27 23:45:18 +00:00
select-load-call.ll
select.ll InstCombine: creating selects from -1 and 0 is fine, they combine into a sext from i1. 2010-12-22 23:12:15 +00:00
set.ll
setcc-strength-reduce.ll
sext.ll
shift-sra.ll Fix a typo in ValueTracking that's causing instcombine to delete needed shift instructions. 2010-03-13 02:20:29 +00:00
shift.ll When determining if we can fold (x >> C1) << C2, the bits that we need to verify are zero 2010-12-23 23:56:24 +00:00
shufflemask-undef.ll
shufflevec-constant.ll
signed-comparison.ll
signext.ll
simplify-demanded-bits-pointer.ll
sink_instruction.ll
sitofp.ll
sqrt.ll Fix a serious performance regression introduced by r108687 on linux: 2010-09-07 20:01:38 +00:00
srem1.ll
srem-simplify-bug.ll
srem.ll
stack-overalign.ll
stacksaverestore.ll
store.ll
strcpy_chk.ll Verify function prototypes before trying to optimize functions. We also 2010-04-12 04:48:00 +00:00
sub.ll InstCombine: Implement X - A*-B -> X + A*B. 2010-11-22 20:31:27 +00:00
trunc.ll teach the truncation optimization that an entire chain of 2010-08-27 20:32:06 +00:00
udiv_select_to_select_shift.ll
udiv-simplify-bug-0.ll
udiv-simplify-bug-1.ll
udivrem-change-width.ll
urem-simplify-bug.ll more test cleanup 2010-09-02 22:38:56 +00:00
urem.ll
vec_demanded_elts-2.ll
vec_demanded_elts-3.ll
vec_demanded_elts.ll
vec_extract_elt.ll
vec_insertelt.ll
vec_narrow.ll Floating-point add, sub, and mul are now spelled fadd, fsub, and fmul, 2010-03-02 01:11:08 +00:00
vec_sext.ll Add vector versions of some existing scalar transforms to aid codegen in matching psign & pblend operations to the IR produced by clang/gcc for their C idioms. 2010-12-17 23:12:19 +00:00
vec_shuffle.ll Change instcombine's getShuffleMask to represent undef with negative values. 2010-10-29 22:03:05 +00:00
vector-casts.ll Rename ValueRequiresCast to ShouldOptimizeCast, to better reflect 2010-02-11 06:26:33 +00:00
vector-srem.ll
volatile_store.ll
xor2.ll Re-apply r113679, which was reverted in r113720, which added a paid of new instcombine transforms 2010-09-13 17:59:27 +00:00
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
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.