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llvm-mirror/test/Transforms
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Bjorn Pettersson f9a3ecf57f [Reassociate] Skip analysis of dead code to avoid infinite loop. 
Summary:
It was detected that the reassociate pass could enter an inifite
loop when analysing dead code. Simply skipping to analyse basic
blocks that are dead avoids such problems (and as a side effect
we avoid spending time on optimising dead code).

The solution is using the same Reverse Post Order ordering of the
basic blocks when doing the optimisations, as when building the
precalculated rank map. A nice side-effect of this solution is
that we now know that we only try to do optimisations for blocks
with ranked instructions.

Fixes https://llvm.org/bugs/show_bug.cgi?id=30818

Reviewers: llvm-commits, davide, eli.friedman, mehdi_amini

Subscribers: dberlin

Differential Revision: https://reviews.llvm.org/D26154

llvm-svn: 285793
2016-11-02 08:55:19 +00:00
..
ADCE
AddDiscriminators Introduce updateDiscriminator interface to DILocation to make it cleaner assigning discriminators. 2016-10-26 15:48:45 +00:00
AlignmentFromAssumptions
ArgumentPromotion
AtomicExpand
BBVectorize [ValueTracking] An improvement to IR ValueTracking on Non-negative Integers 2016-10-12 16:18:43 +00:00
BDCE
BranchFolding
CodeExtractor
CodeGenPrepare Add missing lit.local.cfg to llvm/test/Transforms/CodeGenPrepare/NVPTX. 2016-10-28 21:56:07 +00:00
ConstantHoisting
ConstantMerge
ConstProp
Coroutines [coroutines] Store an address of destroy OR cleanup part in the coroutine frame. 2016-10-08 00:22:50 +00:00
CorrelatedValuePropagation [LVI] Fix a bug with a guard being the very first instruction in a BB not taken into account 2016-10-21 15:02:21 +00:00
CountingFunctionInserter Add a counter-function insertion pass 2016-09-01 09:42:39 +00:00
CrossDSOCFI
DCE
DeadArgElim DeadArgElim: Don't mark swifterror arguments as unused 2016-09-21 15:29:08 +00:00
DeadStoreElimination
EarlyCSE [EarlyCSE] Make MemorySSA memory dependency check more aggressive. 2016-10-25 16:18:47 +00:00
EliminateAvailableExternally
Float2Int
ForcedFunctionAttrs
FunctionAttrs [FunctionAttrs] Don't try to infer returned if it is already on an argument 2016-09-12 16:04:59 +00:00
FunctionImport [llvm] Remove redundant --check-prefix=CHECK from tests 2016-10-24 18:57:55 +00:00
GCOVProfiling DebugInfo: New metadata representation for global variables. 2016-09-13 01:12:59 +00:00
GlobalDCE
GlobalMerge Teach llvm::StripDebugInfo() about global variable !dbg attachments. 2016-10-10 17:53:33 +00:00
GlobalOpt [GlobalOpt] Dead Eliminate declarations 2016-09-15 20:26:27 +00:00
GuardWidening
GVN Revert "[GVN/PRE] Hoist global values outside of loops." 2016-10-21 01:37:02 +00:00
GVNHoist commit back "GVN-hoist: fix store past load dependence analysis (PR30216, PR30499)" 2016-10-13 01:39:10 +00:00
IndVarSimplify [IndVarSimplify] Teach calculatePostIncRange to take guards into account 2016-10-19 19:43:54 +00:00
InferFunctionAttrs [InferAttributes] Don't access parameters that don't exist. 2016-09-20 23:10:31 +00:00
Inline [llvm] Remove redundant --check-prefix=CHECK from tests 2016-10-24 18:57:55 +00:00
InstCombine [InstCombine] allow splat vector folds in adjustMinMax() 2016-11-01 20:08:02 +00:00
InstMerge
InstSimplify Simplify x >=u x >> y and x >=u x udiv y 2016-10-26 19:18:43 +00:00
InterleavedAccess/X86 Add a pass to optimize patterns of vectorized interleaved memory accesses for 2016-10-14 18:20:41 +00:00
Internalize
IPConstantProp
IRCE
JumpThreading Revert 284971. 2016-10-24 14:52:04 +00:00
LCSSA
LICM Add Loop Sink pass to reverse the LICM based of basic block frequency. 2016-10-27 16:30:08 +00:00
LoadCombine
LoadStoreVectorizer AMDGPU/SI: Don't allow unaligned scratch access 2016-10-14 18:10:39 +00:00
LoopDataPrefetch
LoopDeletion
LoopDistribute
LoopIdiom
LoopInterchange [LoopInterchange] Track all dependencies, not just anti dependencies. 2016-09-21 19:16:47 +00:00
LoopLoadElim
LoopReroll
LoopRotate
LoopSimplify
LoopSimplifyCFG
LoopStrengthReduce Fix testcases failing after r284036 2016-10-12 20:39:33 +00:00
LoopUnroll [LoopUnroll] Keep the loop test only on the first iteration of max-or-zero loops 2016-10-21 11:08:48 +00:00
LoopUnswitch
LoopVectorize Second attempt at r285517. 2016-10-31 13:17:31 +00:00
LoopVersioning
LoopVersioningLICM [Loop Vectorizer] Fixed memory confilict checks. 2016-08-28 08:53:53 +00:00
LowerAtomic
LowerExpectIntrinsic [Profile] handle select instruction in 'expect' lowering 2016-09-02 22:03:40 +00:00
LowerGuardIntrinsic
LowerInvoke
LowerSwitch
LowerTypeTests Revert r277556. Add -lowertypetests-bitsets-level to control bitsets generation 2016-09-27 00:29:53 +00:00
Mem2Reg
MemCpyOpt [MemCpy] Add comments for r279769 2016-08-25 21:03:46 +00:00
MergeFunc
MetaRenamer
NameAnonGlobals [ThinLTO] Ensure anonymous globals renamed even at -O0 2016-09-17 20:40:16 +00:00
NaryReassociate
ObjCARC [ObjCARC] Traverse chain downwards to replace uses of argument passed to 2016-09-13 23:43:11 +00:00
PartiallyInlineLibCalls
PGOProfile [PGO] Fix select instruction annotation 2016-10-25 21:47:24 +00:00
PhaseOrdering
PlaceSafepoints
PreISelIntrinsicLowering
PruneEH [PruneEH] Be correct in the face IPO 2016-10-03 19:35:30 +00:00
Reassociate [Reassociate] Skip analysis of dead code to avoid infinite loop. 2016-11-02 08:55:19 +00:00
Reg2Mem
RewriteStatepointsForGC [RS4GC] Strengthen coverage: add more tests 2016-10-07 20:34:00 +00:00
SafeStack [safestack] Use non-thread-local unsafe stack pointer for Contiki OS 2016-10-14 17:56:00 +00:00
SampleProfile Change the basic block weight calculation algorithm to use max instead of voting. 2016-09-21 16:26:51 +00:00
Scalarizer
SCCP [SCCP] Don't delete side-effecting instructions 2016-08-24 18:10:21 +00:00
SeparateConstOffsetFromGEP
SimplifyCFG [llvm] Remove redundant --check-prefix=CHECK from tests 2016-10-24 18:57:55 +00:00
Sink
SLPVectorizer [SLP] Fix for PR30626: Compiler crash inside SLP Vectorizer. 2016-10-27 12:02:28 +00:00
SpeculativeExecution SpeculativeExecution: Allow speculating more inst types 2016-10-28 20:00:33 +00:00
SROA Fix revision 281960 2016-09-22 07:56:23 +00:00
StraightLineStrengthReduce
StripDeadPrototypes
StripSymbols [opt] Strip coverage if debug info is not present. 2016-10-17 20:05:35 +00:00
StructurizeCFG
TailCallElim
Util Add -strip-nonlinetable-debuginfo capability 2016-10-25 18:44:13 +00:00
WholeProgramDevirt