llvm-6502/lib/Transforms/Scalar
Chandler Carruth a87c35420b Revert r220349 to re-instate r220277 with a fix for PR21330 -- quite
clearly only exactly equal width ptrtoint and inttoptr casts are no-op
casts, it says so right there in the langref. Make the code agree.

Original log from r220277:
Teach the load analysis to allow finding available values which require
inttoptr or ptrtoint cast provided there is datalayout available.
Eventually, the datalayout can just be required but in practice it will
always be there today.

To go with the ability to expose available values requiring a ptrtoint
or inttoptr cast, helpers are added to perform one of these three casts.

These smarts are necessary to finish canonicalizing loads and stores to
the operational type requirements without regressing fundamental
combines.

I've added some test cases. These should actually improve as the load
combining and store combining improves, but they may fundamentally be
highlighting some missing combines for select in addition to exercising
the specific added logic to load analysis.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222739 91177308-0d34-0410-b5e6-96231b3b80d8
2014-11-25 08:20:27 +00:00
..
ADCE.cpp Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool> 2014-11-19 07:49:26 +00:00
AlignmentFromAssumptions.cpp [AlignmentFromAssumptions] Don't crash just because the target is 32-bit 2014-09-11 08:40:17 +00:00
CMakeLists.txt Add an AlignmentFromAssumptions Pass 2014-09-07 20:05:11 +00:00
ConstantHoisting.cpp Remove unnecessary copying or replace it with moves in a bunch of places. 2014-10-04 16:55:56 +00:00
ConstantProp.cpp
CorrelatedValuePropagation.cpp Make use of @llvm.assume from LazyValueInfo 2014-09-07 20:29:59 +00:00
DCE.cpp
DeadStoreElimination.cpp [DSE] Remove no-data-layout-only type-based overlap checking 2014-10-17 11:56:00 +00:00
EarlyCSE.cpp Tweak EarlyCSE to recognize series of dead stores 2014-11-18 17:46:32 +00:00
FlattenCFGPass.cpp
GVN.cpp Revert r222039 because of bot failure. 2014-11-19 00:13:26 +00:00
IndVarSimplify.cpp Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool> 2014-11-19 07:49:26 +00:00
JumpThreading.cpp Revert r220349 to re-instate r220277 with a fix for PR21330 -- quite 2014-11-25 08:20:27 +00:00
LICM.cpp Introduce enum values for previously defined metadata types. (NFC) 2014-10-21 00:13:20 +00:00
LLVMBuild.txt ScalarOpts/LLVMBuild.txt: Prune unused dependency to IPA. 2014-09-09 15:00:38 +00:00
LoadCombine.cpp Use AA in LoadCombine 2014-11-03 23:19:16 +00:00
LoopDeletion.cpp Use range based for loops to avoid needing to re-mention SmallPtrSet size. 2014-08-24 23:23:06 +00:00
LoopIdiomRecognize.cpp
LoopInstSimplify.cpp Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool> 2014-11-19 07:49:26 +00:00
LoopRerollPass.cpp Reformat partially, where I touched for whitespace changes. 2014-10-28 11:54:52 +00:00
LoopRotation.cpp Do not simplifyLatch for loops where hoisting increments couldresult in extra live range interferance 2014-10-29 20:19:47 +00:00
LoopStrengthReduce.cpp Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool> 2014-11-19 07:49:26 +00:00
LoopUnrollPass.cpp [SCEV] Add some asserts to the recently improved trip count computation 2014-10-11 00:12:11 +00:00
LoopUnswitch.cpp Add functions for finding ephemeral values 2014-09-07 13:49:57 +00:00
LowerAtomic.cpp
Makefile
MemCpyOptimizer.cpp Allow call-slop optzn for destinations with a suitable dereferenceable attribute 2014-10-16 19:43:08 +00:00
MergedLoadStoreMotion.cpp Use Alias Analysis to hoist 2 loads from diamond to the common predecessor basic block. 2014-11-02 08:03:05 +00:00
PartiallyInlineLibCalls.cpp
Reassociate.cpp This Reassociate change unintentionally slipped in r222499 2014-11-21 02:37:38 +00:00
Reg2Mem.cpp
SampleProfile.cpp Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool> 2014-11-19 07:49:26 +00:00
Scalar.cpp [C API] Make the 'lower switch' pass available via the C API. 2014-09-11 21:32:32 +00:00
Scalarizer.cpp Revert "IR: MDNode => Value" 2014-11-11 21:30:22 +00:00
ScalarReplAggregates.cpp Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool> 2014-11-19 07:49:26 +00:00
SCCP.cpp Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool> 2014-11-19 07:49:26 +00:00
SeparateConstOffsetFromGEP.cpp [SeparateConstOffsetFromGEP] Allow SeparateConstOffsetFromGEP pass to lower GEPs. 2014-11-19 06:24:44 +00:00
SimplifyCFGPass.cpp [SimplifyCFG] threshold for folding branches with common destination 2014-09-30 22:23:38 +00:00
Sink.cpp Use range based for loops to avoid needing to re-mention SmallPtrSet size. 2014-08-24 23:23:06 +00:00
SROA.cpp SROA: The alloca type isn't a candidate promotion type for vectors 2014-11-21 02:34:55 +00:00
StructurizeCFG.cpp
TailRecursionElimination.cpp Fix tail recursion elimination 2014-11-19 13:32:51 +00:00