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llvm-project/llvm/test/Transforms
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Simon Dardis 230f453574 [CodeGenPrepare] Check that erased sunken address are not reused 
CodeGenPrepare sinks address computations from one basic block to another
and attempts to reuse address computations that have already been sunk. If
the same address computation appears twice with the first instance as an
operand of a load whose result is an operand to a simplifable select,
CodeGenPrepare simplifies the select and recursively erases the now dead
instructions. CodeGenPrepare then attempts to use the erased address
computation for the second load.

Fix this by erasing the cached address value if it has zero uses before
looking for the address value in the sunken address map.

This partially resolves PR35209.

Thanks to Alexander Richardson for reporting the issue!

This fixed version relands r318032 which was reverted in r318049 due to
sanitizer buildbot failures.

Reviewers: john.brawn

Differential Revision: https://reviews.llvm.org/D39841

llvm-svn: 318956
 		2017-11-24 16:45:28 +00:00
..
ADCE [ADCE][Dominators] Reapply: Teach ADCE to preserve dominators 2017-08-22 16:30:21 +00:00
AddDiscriminators
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AlignmentFromAssumptions
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ArgumentPromotion [ArgPromotion] Preserve alignment of byval argument in new alloca 2017-08-04 17:09:11 +00:00
AtomicExpand
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BDCE [BDCE] Don't check demanded bits on unsized types 2017-08-16 16:09:22 +00:00
BranchFolding
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CallSiteSplitting [CallSiteSplitting] Remove some indirection (NFC). 2017-11-18 18:14:13 +00:00
CalledValuePropagation Add CalledValuePropagation pass 2017-10-25 13:40:08 +00:00
CodeExtractor [PartialInliner] Inline vararg functions that forward varargs. 2017-11-13 10:35:52 +00:00
CodeGenPrepare [CodeGenPrepare] Check that erased sunken address are not reused 2017-11-24 16:45:28 +00:00
ConstProp [X86] Replace 'REQUIRES: x86' in tests with 'REQUIRES: x86-registered-target' which seems to be the correct way to make them run on an x86 build. 2017-06-04 08:21:58 +00:00
ConstantHoisting Fix out-of-order stepping behavior in programs with hoisted constants. 2017-11-09 20:01:31 +00:00
ConstantMerge Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
Coroutines [coroutines] Add support for symmetric control transfer (musttail on coro.resumes followed by a suspend) 2017-08-25 02:25:10 +00:00
CorrelatedValuePropagation [CVP] Remove some {s|u}add.with.overflow checks. 2017-11-10 19:13:35 +00:00
CrossDSOCFI [cfi] Build __cfi_check as Thumb when applicable. 2017-08-29 22:29:15 +00:00
DCE Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
DeadArgElim Remove the obsolete offset parameter from @llvm.dbg.value 2017-07-28 20:21:02 +00:00
DeadStoreElimination Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
DivRemPairs [DivRemPairs] split tests per target to account for bots that don't build for all targets 2017-09-09 14:10:59 +00:00
EarlyCSE Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
EliminateAvailableExternally
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EntryExitInstrumenter Rename test/Transforms/CountingFunctionInserter -> EntryExitInstrumenter 2017-11-21 17:22:19 +00:00
ExpandMemCmp/X86 re-land [ExpandMemCmp] Split ExpandMemCmp from CodeGen into its own pass." 2017-11-03 12:12:27 +00:00
Float2Int
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ForcedFunctionAttrs
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FunctionAttrs Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
FunctionImport Fix bot failures by requiring x86 target 2017-08-19 19:15:04 +00:00
GCOVProfiling Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
GVN Let llvm.invariant.group.barrier accepts pointer to any address space 2017-11-16 16:32:16 +00:00
GVNHoist Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
GVNSink Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
GlobalDCE [PM] Teach the PGO instrumentation pasess to run GlobalDCE before 2017-05-25 07:15:09 +00:00
GlobalMerge Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
GlobalOpt Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
GlobalSplit
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GuardWidening
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IPConstantProp
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IRCE [IRCE] Smart range intersection 2017-11-20 06:07:57 +00:00
IndVarSimplify IndVarSimplify: preserve debug information attached to widened PHI nodes. 2017-11-02 23:17:06 +00:00
InferAddressSpaces InferAddressSpaces: Fix bug about replacing addrspacecast 2017-10-30 21:19:41 +00:00
InferFunctionAttrs Add argmononly attribute to strlen and wcslen, i.e. they only read memory (string) passed to them. 2017-06-18 03:10:26 +00:00
Inline Move verbosity check for remarks to the diag handler 2017-10-04 04:26:23 +00:00
InstCombine [InstCombine] Test for PR35354: unable to vectorize loop with std::max 2017-11-21 14:49:13 +00:00
InstMerge
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InstNamer Add basic test case for -instnamer 2017-05-08 23:18:46 +00:00
InstSimplify [InstSimplify] fold and/or of fcmp ord/uno when operand is known nnan 2017-11-19 15:34:27 +00:00
InterleavedAccess [X86][LLVM]Expanding Supports lowerInterleaved{store|load}() in X86InterleavedAccess (VF64 stride 3-4) 2017-10-02 07:35:25 +00:00
Internalize
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JumpThreading Fix some misc. -enable-var-scope violations 2017-11-13 01:47:52 +00:00
LCSSA
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LICM [LICM] Fix PR35342 2017-11-17 20:38:25 +00:00
LoadStoreVectorizer Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
LoopDataPrefetch
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LoopDeletion [Dominators] Teach LoopDeletion to use the new incremental API 2017-08-02 18:17:52 +00:00
LoopDistribute
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LoopIdiom Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
LoopInterchange [LoopInterchange] Fix phi node ordering miscompile. 2017-10-21 13:58:37 +00:00
LoopLoadElim
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LoopPredication [LoopPredication] Enable predication when latchCheckIV is wider than rangeCheck 2017-11-02 21:21:02 +00:00
LoopReroll Remove the obsolete offset parameter from @llvm.dbg.value 2017-07-28 20:21:02 +00:00
LoopRotate Fix llvm/test/Transforms/LoopRotate/pr35210.ll in rL318237, it uses debug options. 2017-11-15 06:46:58 +00:00
LoopSimplify [SCEV] Teach SCEV to find maxBECount when loop endbound is variant 2017-10-13 14:30:43 +00:00
LoopSimplifyCFG
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LoopStrengthReduce Revert r314886 "[X86] Improvement in CodeGen instruction selection for LEAs (re-applying post required revision changes.)" 2017-10-04 17:54:06 +00:00
LoopUnroll loop-unroll: teach remapInstruction to update dbg.value intrinsics. 2017-11-01 23:12:35 +00:00
LoopUnswitch [LoopUnswitch] Fix a simple bug which disables loop unswitch for select statement 2017-08-29 21:45:11 +00:00
LoopVectorize [LV] Model masking in VPlan, introducing VPInstructions 2017-11-20 12:01:47 +00:00
LoopVersioning
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LoopVersioningLICM
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LowerAtomic LowerAtomic: Don't skip optnone functions; atomic still need lowering (PR34020) 2017-08-23 15:43:28 +00:00
LowerExpectIntrinsic Fix builin_expect lowering bug 2017-06-07 18:32:24 +00:00
LowerGuardIntrinsic
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LowerInvoke
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LowerSwitch
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LowerTypeTests Current implementation of Value::replaceUsesExceptBlockAddr() uses UseList 2017-11-17 00:30:24 +00:00
Mem2Reg Re-land r313825: "[IR] Add llvm.dbg.addr, a control-dependent version of llvm.dbg.declare" 2017-09-21 19:52:03 +00:00
MemCpyOpt Fix some misc. -enable-var-scope violations 2017-11-13 01:47:52 +00:00
MergeFunc [MergeFunctions] Merge small functions if possible without a thunk. 2017-10-15 12:29:09 +00:00
MergeICmps Re-land "[MergeICmps] Disable mergeicmps if the target does not want to handle memcmp expansion." 2017-10-10 08:00:45 +00:00
MetaRenamer [MetaRenamer] Leave `@main` alone. 2017-08-01 05:14:45 +00:00
NameAnonGlobals
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NaryReassociate
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NewGVN Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
ObjCARC ObjCARC: do not increment past the end of the BB 2017-10-24 00:09:10 +00:00
PGOProfile Add heuristics for irreducible loop metadata under PGO 2017-11-20 21:03:38 +00:00
PartiallyInlineLibCalls [PartialInlineLibCalls] Teach PartialInlineLibCalls to honor nobuiltin, properly check the function signature, and check TLI::has 2017-10-28 00:36:58 +00:00
PhaseOrdering [PassManager, SimplifyCFG] add test for PR34603 / D38566; NFC 2017-11-15 16:37:30 +00:00
PlaceSafepoints All libcalls should be considered to be GC-leaf functions. 2017-07-27 16:49:39 +00:00
PreISelIntrinsicLowering
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PruneEH
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Reassociate [Reassociation] regenerate test checks; NFC 2017-11-13 19:46:28 +00:00
Reg2Mem
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RewriteStatepointsForGC Strip off invariant.start because memory locations arent invariant 2017-11-02 18:24:04 +00:00
SCCP [SCCP] Pick the right lattice value for constants. 2017-11-22 03:04:55 +00:00
SLPVectorizer SLPVectorizer.cpp: Avoid std::stable_sort(properlyDominates()). 2017-11-21 09:41:01 +00:00
SROA [SROA] Correctly invalidate analyses when dead instructions deleted 2017-11-20 18:33:38 +00:00
SafeStack Parse and print DIExpressions inline to ease IR and MIR testing 2017-08-23 20:31:27 +00:00
SampleProfile Include already promoted counts when computing SUM for VP. 2017-11-06 19:52:49 +00:00
Scalarizer Remove the obsolete offset parameter from @llvm.dbg.value 2017-07-28 20:21:02 +00:00
SeparateConstOffsetFromGEP
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SimpleLoopUnswitch [PM/Unswitch] Teach SimpleLoopUnswitch to do non-trivial unswitching, 2017-11-17 19:58:36 +00:00
SimplifyCFG [Hexagon] Remove trailing spaces, NFC 2017-11-22 20:43:00 +00:00
Sink Enhance synchscope representation 2017-07-11 22:23:00 +00:00
SpeculativeExecution Revert r301950: SpeculativeExecution: Stop using whitelist for costs 2017-05-10 12:30:07 +00:00
StraightLineStrengthReduce
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StripDeadPrototypes
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StripSymbols Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
StructurizeCFG [Dominators] Include infinite loops in PostDominatorTree 2017-08-15 18:14:57 +00:00
TailCallElim [TRE] Add another test for OptRemark. 2017-07-19 21:39:51 +00:00
ThinLTOBitcodeWriter ModuleUtils: Stop using comdat members to generate unique module ids. 2017-10-05 21:54:53 +00:00
Util [InstCombine] Add a flag to disable LowerDbgDeclare 2017-09-13 01:43:25 +00:00
WholeProgramDevirt [LTO][ThinLTO] Use the linker resolutions to mark global values as dso_local. 2017-11-04 17:04:39 +00:00