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645fd68c5c
llvm-6502/test/Transforms
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Owen Anderson 645fd68c5c Fix an infinite loop in InstCombine when an instruction with no users and side effects can be constant folded. 
ReplaceInstUsesWith needs to return nullptr when the input has no users,
because in that case it does not mutate the program.  Otherwise, we can
get stuck in an infinite loop of repeatedly attempting to constant fold
and instruction with no users.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231755 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-10 05:13:47 +00:00
..
ADCE [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
AddDiscriminators DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
AlignmentFromAssumptions [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
ArgumentPromotion DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
AtomicExpand/ARM
BBVectorize [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
BDCE [BDCE] Don't forget uses of root instructions seen before the instruction itself 2015-02-18 03:12:28 +00:00
BranchFolding
CodeExtractor [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
CodeGenPrepare [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
ConstantHoisting [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
ConstantMerge Make DataLayout Non-Optional in the Module 2015-03-04 18:43:29 +00:00
ConstProp [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
CorrelatedValuePropagation [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
DeadArgElim DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
DeadStoreElimination DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
EarlyCSE [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
FunctionAttrs [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
GCOVProfiling DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
GlobalDCE [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
GlobalOpt Make DataLayout Non-Optional in the Module 2015-03-04 18:43:29 +00:00
GVN [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
IndVarSimplify Make DataLayout Non-Optional in the Module 2015-03-04 18:43:29 +00:00
Inline Make DataLayout Non-Optional in the Module 2015-03-04 18:43:29 +00:00
InstCombine Fix an infinite loop in InstCombine when an instruction with no users and side effects can be constant folded. 2015-03-10 05:13:47 +00:00
InstMerge [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
InstSimplify [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
Internalize [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
IPConstantProp [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
IRCE [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
JumpThreading [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
LCSSA [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
LICM DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
LoadCombine [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
LoopDeletion [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
LoopIdiom DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
LoopInterchange Add a new pass "Loop Interchange" 2015-03-06 10:11:25 +00:00
LoopReroll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
LoopRotate DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
LoopSimplify Make DataLayout Non-Optional in the Module 2015-03-04 18:43:29 +00:00
LoopStrengthReduce Make DataLayout Non-Optional in the Module 2015-03-04 18:43:29 +00:00
LoopUnroll Revert r231630 - Run LICM pass after loop unrolling pass. 2015-03-09 07:26:37 +00:00
LoopUnswitch [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
LoopVectorize Introduce runtime unrolling disable matadata and use it to mark the scalar loop from vectorization. 2015-03-09 06:14:18 +00:00
LowerAtomic [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
LowerBitSets LowerBitSets: Use byte arrays instead of bit sets to represent in-memory bit sets. 2015-03-03 00:49:28 +00:00
LowerExpectIntrinsic [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
LowerInvoke
LowerSwitch [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
Mem2Reg DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
MemCpyOpt [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
MergeFunc [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
MetaRenamer [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
ObjCARC [objc-arc] Remove annotations code. 2015-03-06 00:34:29 +00:00
PartiallyInlineLibCalls
PhaseOrdering Make DataLayout Non-Optional in the Module 2015-03-04 18:43:29 +00:00
PlaceSafepoints PlaceSafepoints: use IRBuilder helpers 2015-02-26 00:35:56 +00:00
PruneEH
Reassociate [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
Reg2Mem
RewriteStatepointsForGC [RewriteStatepointsForGC] Yet more test cases for relocation 2015-03-05 22:28:06 +00:00
SampleProfile DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
Scalarizer Make DataLayout Non-Optional in the Module 2015-03-04 18:43:29 +00:00
ScalarRepl Make DataLayout Non-Optional in the Module 2015-03-04 18:43:29 +00:00
SCCP [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
SeparateConstOffsetFromGEP/NVPTX [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
SimplifyCFG DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
Sink [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
SLPVectorizer DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
SROA [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
StraightLineStrengthReduce
StripSymbols DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
StructurizeCFG [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
TailCallElim TRE: Just erase dead BBs and tweak the iteration loop not to increment the deleted BB iterator. 2015-02-28 16:47:27 +00:00
TailDup
Util