Ahmed Bougacha 8081057fca [MemCpyOpt] Turn memcpy from just-memset'd source into memset. ...

There's no point in copying around constants, so, when all else fails,
we can still transform memcpy of memset into two independent memsets.

To quote the example, we can turn:
  memset(dst1, c, dst1_size);
  memcpy(dst2, dst1, dst2_size);
into:
  memset(dst1, c, dst1_size);
  memset(dst2, c, dst2_size);
When dst2_size <= dst1_size.

Like r235232 for copy constructors, this can occur in move constructors.

Differential Revision: http://reviews.llvm.org/D9682


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237506 91177308-0d34-0410-b5e6-96231b3b80d8

2015-05-16 01:32:26 +00:00

..

ADCE.cpp

[ADCE] Don't indent inside an anonymous namespace

2015-02-16 18:08:00 +00:00

AlignmentFromAssumptions.cpp

Use 'override/final' instead of 'virtual' for overridden methods

2015-04-11 02:11:45 +00:00

BDCE.cpp

DataLayout is mandatory, update the API to reflect it with references.

2015-03-10 02:37:25 +00:00

CMakeLists.txt

Add a speculative execution pass

2015-05-15 17:54:48 +00:00

ConstantHoisting.cpp

Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used.

2015-03-23 19:32:43 +00:00

ConstantProp.cpp

DataLayout is mandatory, update the API to reflect it with references.

2015-03-10 02:37:25 +00:00

CorrelatedValuePropagation.cpp

CVP: Improve handling of Selects used as incoming PHI values

2015-05-12 22:31:47 +00:00

DCE.cpp

[PM] Separate the TargetLibraryInfo object from the immutable pass.

2015-01-15 10:41:28 +00:00

DeadStoreElimination.cpp

[CallSite] Make construction from Value* (or Instruction*) explicit.

2015-04-10 14:50:08 +00:00

EarlyCSE.cpp

Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used.

2015-03-23 19:32:43 +00:00

FlattenCFGPass.cpp

[Modules] Fix potential ODR violations by sinking the DEBUG_TYPE

2014-04-22 02:55:47 +00:00

Float2Int.cpp

Reapply r233175 and r233183: float2int.

2015-03-27 10:36:57 +00:00

GVN.cpp

[opaque pointer type] API migration for GEP constant factories

2015-04-02 18:55:32 +00:00

InductiveRangeCheckElimination.cpp

[IRCE] Fix how IRCE checks for no-sign-overflow.

2015-03-24 19:29:22 +00:00

IndVarSimplify.cpp

[SCEV] Refactor out isHighCostExpansion. NFCI.

2015-04-14 03:20:28 +00:00

JumpThreading.cpp

[JumpThreading] Simplify comparisons when simplifying branches

2015-05-07 00:19:14 +00:00

LICM.cpp

Construct ArrayRef<const T*> from vector<T>

2015-05-13 22:43:09 +00:00

LLVMBuild.txt

Update libdeps since TLI was moved from Target to Analysis in r226078.

2015-01-15 05:21:00 +00:00

LoadCombine.cpp

Mark empty default constructors as =default if it makes the type POD

2015-04-11 18:57:14 +00:00

LoopDeletion.cpp

[PM] Split the LoopInfo object apart from the legacy pass, creating

2015-01-17 14:16:18 +00:00

LoopDistribute.cpp

Attempt to fix MSVC bots

2015-05-14 12:33:32 +00:00

LoopIdiomRecognize.cpp

Don't rely on implicit pointerness of 'auto'.

2015-05-14 21:52:12 +00:00

LoopInstSimplify.cpp

DataLayout is mandatory, update the API to reflect it with references.

2015-03-10 02:37:25 +00:00

LoopInterchange.cpp

Fix LoopInterchange/reductions.ll test for debug builds

2015-04-24 17:39:16 +00:00

LoopRerollPass.cpp

Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used.

2015-03-23 19:32:43 +00:00

LoopRotation.cpp

Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used.

2015-03-23 19:32:43 +00:00

LoopStrengthReduce.cpp

[LSR][NFC] Remove a stale comment.

2015-04-21 20:42:50 +00:00

LoopUnrollPass.cpp

[Unrolling] Refactor the start and step offsets to simplify overflow

2015-05-12 23:32:56 +00:00

LoopUnswitch.cpp

DataLayout is mandatory, update the API to reflect it with references.

2015-03-10 02:37:25 +00:00

LowerAtomic.cpp

IR: add "cmpxchg weak" variant to support permitted failure.

2014-06-13 14:24:07 +00:00

LowerExpectIntrinsic.cpp

[PM] Port LowerExpectIntrinsic to the new pass manager.

2015-01-24 11:13:02 +00:00

Makefile

…

MemCpyOptimizer.cpp

[MemCpyOpt] Turn memcpy from just-memset'd source into memset.

2015-05-16 01:32:26 +00:00

MergedLoadStoreMotion.cpp

Another set of missing raw_ostream.h. Still no functional change.

2015-03-23 18:45:56 +00:00

NaryReassociate.cpp

[NaryReassociate] avoid running forever

2015-05-13 18:12:24 +00:00

PartiallyInlineLibCalls.cpp

[multiversion] Thread a function argument through all the callers of the

2015-02-01 12:01:35 +00:00

PlaceSafepoints.cpp

[PlaceSafepoints] Fix a bug that came in with rL236672.

2015-05-15 00:26:21 +00:00

Reassociate.cpp

don't repeat function names in comments; NFC

2015-04-22 18:04:46 +00:00

Reg2Mem.cpp

Standardize {pred,succ,use,user}_empty()

2015-01-13 03:46:47 +00:00

RewriteStatepointsForGC.cpp

[RewriteStatepointsForGC] Extend base pointer to handle more cases w/vectors

2015-05-12 22:19:52 +00:00

SampleProfile.cpp

Add function entry counts from sample profiles.

2015-05-13 17:04:29 +00:00

Scalar.cpp

Add a speculative execution pass

2015-05-15 17:54:48 +00:00

Scalarizer.cpp

[opaque pointer type] More GEP IRBuilder API migrations

2015-04-03 23:03:54 +00:00

ScalarReplAggregates.cpp

Change LoadAndStorePromoter to take ArrayRef instead of SmallVectorImpl&.

2015-05-13 01:12:16 +00:00

SCCP.cpp

[opaque pointer type] API migration for GEP constant factories

2015-04-02 18:55:32 +00:00

SeparateConstOffsetFromGEP.cpp

[ValueTracking] refactor: extract method haveNoCommonBitsSet

2015-05-14 23:53:19 +00:00

SimplifyCFGPass.cpp

DataLayout is mandatory, update the API to reflect it with references.

2015-03-10 02:37:25 +00:00

Sink.cpp

DataLayout is mandatory, update the API to reflect it with references.

2015-03-10 02:37:25 +00:00

SpeculativeExecution.cpp

Add a speculative execution pass

2015-05-15 17:54:48 +00:00

SROA.cpp

Construct ArrayRef<const T*> from vector<T>

2015-05-13 22:43:09 +00:00

StraightLineStrengthReduce.cpp

[SLSR] handle (B | i) * S

2015-05-15 17:07:48 +00:00

StructurizeCFG.cpp

Change range-based for-loops to be -Wrange-loop-analysis clean.

2015-04-15 01:21:15 +00:00

TailRecursionElimination.cpp

Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used.

2015-03-23 19:32:43 +00:00