llvm-6502/lib/Transforms/Scalar
Sanjoy Das 008dd56706 Revert some changes that were made to fix PR20680.
Summary:
As far as I can tell, the real bug causing the issue was fixed in
r230533.  SCEVExpander should mark an increment operation as nuw or nsw
only if it can *prove* that the operation does not overflow.  There
shouldn't be any situation where we have to do something different
because of no-wrap flags generated by SCEVExpander.

Revert "IndVarSimplify: Allow LFTR to fire more often"

This reverts commit 1ade0f0faa (SVN: 222213).

Revert "IndVarSimplify: Don't let LFTR compare against a poison value"

This reverts commit c0f2b8b528 (SVN: 217102).

Reviewers: majnemer, atrick, spatel

Differential Revision: http://reviews.llvm.org/D7979

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230921 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-01 23:36:26 +00:00
..
ADCE.cpp [ADCE] Don't indent inside an anonymous namespace 2015-02-16 18:08:00 +00:00
AlignmentFromAssumptions.cpp [PM] Split the LoopInfo object apart from the legacy pass, creating 2015-01-17 14:16:18 +00:00
BDCE.cpp add newline for easier reading; NFC 2015-02-23 21:32:09 +00:00
CMakeLists.txt Add a pass for constructing gc.statepoint sequences w/explicit relocations 2015-02-20 01:06:44 +00:00
ConstantHoisting.cpp [optnone] Skip pass Constant Hoisting on optnone functions. 2015-02-14 15:11:48 +00:00
ConstantProp.cpp [PM] Separate the TargetLibraryInfo object from the immutable pass. 2015-01-15 10:41:28 +00:00
CorrelatedValuePropagation.cpp
DCE.cpp [PM] Separate the TargetLibraryInfo object from the immutable pass. 2015-01-15 10:41:28 +00:00
DeadStoreElimination.cpp [PM] Move TargetLibraryInfo into the Analysis library. 2015-01-15 02:16:27 +00:00
EarlyCSE.cpp Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition. 2015-02-15 22:54:22 +00:00
FlattenCFGPass.cpp
GVN.cpp only propagate equality comparisons of FP values that we are certain are non-zero 2015-02-25 22:46:08 +00:00
InductiveRangeCheckElimination.cpp IRCE: only touch loops that have been shown to have a high 2015-02-26 08:56:04 +00:00
IndVarSimplify.cpp Revert some changes that were made to fix PR20680. 2015-03-01 23:36:26 +00:00
JumpThreading.cpp [PM] Replace the Pass argument to SplitEdge with specific analyses used 2015-01-19 12:36:53 +00:00
LICM.cpp [LICM] Refactor to expose functionality as utility functions 2015-02-22 18:35:32 +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
LoopDeletion.cpp [PM] Split the LoopInfo object apart from the legacy pass, creating 2015-01-17 14:16:18 +00:00
LoopIdiomRecognize.cpp LoopIdiom: Use utility functions. 2015-02-07 21:37:08 +00:00
LoopInstSimplify.cpp [LPM] Stop using the string based preservation API. It is an 2015-01-28 04:57:56 +00:00
LoopRerollPass.cpp [LoopReroll] Relax some assumptions a little. 2015-02-16 17:02:00 +00:00
LoopRotation.cpp LoopRotate: When reconstructing loop simplify form don't split edges from indirectbrs. 2015-02-20 20:49:25 +00:00
LoopStrengthReduce.cpp LSR: Move set instead of copying. NFC. 2015-02-19 17:19:43 +00:00
LoopUnrollPass.cpp Transforms: Canonicalize access to function attributes, NFC 2015-02-14 01:11:29 +00:00
LoopUnswitch.cpp Transforms: Canonicalize access to function attributes, NFC 2015-02-14 01:11:29 +00:00
LowerAtomic.cpp
LowerExpectIntrinsic.cpp [PM] Port LowerExpectIntrinsic to the new pass manager. 2015-01-24 11:13:02 +00:00
Makefile
MemCpyOptimizer.cpp Properly update AA metadata when performing call slot optimization 2015-02-07 17:54:36 +00:00
MergedLoadStoreMotion.cpp Fixed a bug in store sinking. 2015-02-17 13:10:05 +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: use IRBuilder helpers 2015-02-26 00:35:56 +00:00
Reassociate.cpp Reassociate: cannot negate a INT_MIN value 2015-02-11 19:54:44 +00:00
Reg2Mem.cpp Standardize {pred,succ,use,user}_empty() 2015-01-13 03:46:47 +00:00
RewriteStatepointsForGC.cpp Silence variable set but not used warning, NFC. 2015-02-28 13:11:24 +00:00
SampleProfile.cpp [PM] Split the LoopInfo object apart from the legacy pass, creating 2015-01-17 14:16:18 +00:00
Scalar.cpp Add a pass for constructing gc.statepoint sequences w/explicit relocations 2015-02-20 01:06:44 +00:00
Scalarizer.cpp
ScalarReplAggregates.cpp [PM] Split the AssumptionTracker immutable pass into two separate APIs: 2015-01-04 12:03:27 +00:00
SCCP.cpp [PM] Separate the TargetLibraryInfo object from the immutable pass. 2015-01-15 10:41:28 +00:00
SeparateConstOffsetFromGEP.cpp [multiversion] Thread a function argument through all the callers of the 2015-02-01 12:01:35 +00:00
SimplifyCFGPass.cpp [multiversion] Thread a function argument through all the callers of the 2015-02-01 12:01:35 +00:00
Sink.cpp [PM] Split the LoopInfo object apart from the legacy pass, creating 2015-01-17 14:16:18 +00:00
SROA.cpp Replace std::copy with a back inserter with vector append where feasible 2015-02-28 10:11:12 +00:00
StraightLineStrengthReduce.cpp Fixing a -Wsign-compare warning; NFC 2015-02-04 14:01:08 +00:00
StructurizeCFG.cpp StructurizeCFG: Remove obsolete fix for loop backedge detection 2015-02-04 20:49:47 +00:00
TailRecursionElimination.cpp 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