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Eli Bendersky bbbc2b1140 Consistent use of the noduplicate attribute. 
The "noduplicate" attribute of call instructions is sometimes queried directly
and sometimes through the cannotDuplicate() predicate. This patch streamlines
all queries to use the cannotDuplicate() predicate. It also adds this predicate
to InvokeInst, to mirror what CallInst has.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204049 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-17 16:19:07 +00:00
..
IPA Consistent use of the noduplicate attribute. 2014-03-17 16:19:07 +00:00
AliasAnalysis.cpp IR: add a second ordering operand to cmpxhg for failure 2014-03-11 10:48:52 +00:00
AliasAnalysisCounter.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
AliasAnalysisEvaluator.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
AliasDebugger.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
AliasSetTracker.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
Analysis.cpp [cleanup] Re-sort all the includes with utils/sort_includes.py. 2014-03-04 10:07:28 +00:00
BasicAliasAnalysis.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
BlockFrequencyInfo.cpp [Modules] Move CFG.h to the IR library as it defines graph traits over 2014-03-04 11:45:46 +00:00
BranchProbabilityInfo.cpp [Modules] Move CFG.h to the IR library as it defines graph traits over 2014-03-04 11:45:46 +00:00
CaptureTracking.cpp [C++11] Add range based accessors for the Use-Def chain of a Value. 2014-03-09 03:16:01 +00:00
CFG.cpp
CFGPrinter.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
CMakeLists.txt
CodeMetrics.cpp Consistent use of the noduplicate attribute. 2014-03-17 16:19:07 +00:00
ConstantFolding.cpp Allow constant folding of round function whenever feasible 2014-03-07 04:36:21 +00:00
CostModel.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
Delinearization.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
DependenceAnalysis.cpp [Modules] Move InstIterator out of the Support library, where it had no 2014-03-04 10:30:26 +00:00
DominanceFrontier.cpp
DomPrinter.cpp
InstCount.cpp [Layering] Move InstVisitor.h into the IR library as it is pretty 2014-03-06 03:23:41 +00:00
InstructionSimplify.cpp [C++11] Add range based accessors for the Use-Def chain of a Value. 2014-03-09 03:16:01 +00:00
Interval.cpp [Modules] Move CFG.h to the IR library as it defines graph traits over 2014-03-04 11:45:46 +00:00
IntervalPartition.cpp
IVUsers.cpp PR17473: 2014-03-12 21:31:05 +00:00
LazyCallGraph.cpp [LCG] Ran clang-format over this too and it pointed out some fixes. 2014-03-10 02:14:14 +00:00
LazyValueInfo.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
LibCallAliasAnalysis.cpp
LibCallSemantics.cpp
Lint.cpp Teach lint about address spaces 2014-03-06 17:33:55 +00:00
LLVMBuild.txt
Loads.cpp
LoopInfo.cpp Consistent use of the noduplicate attribute. 2014-03-17 16:19:07 +00:00
LoopPass.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
Makefile
MemDepPrinter.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
MemoryBuiltins.cpp [C++11] Add range based accessors for the Use-Def chain of a Value. 2014-03-09 03:16:01 +00:00
MemoryDependenceAnalysis.cpp Replace OwningPtr<T> with std::unique_ptr<T>. 2014-03-06 05:51:42 +00:00
ModuleDebugInfoPrinter.cpp [Layering] Move DebugInfo.h into the IR library where its implementation 2014-03-06 00:46:21 +00:00
NoAliasAnalysis.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
PHITransAddr.cpp [C++11] Add range based accessors for the Use-Def chain of a Value. 2014-03-09 03:16:01 +00:00
PostDominators.cpp [Modules] Move CFG.h to the IR library as it defines graph traits over 2014-03-04 11:45:46 +00:00
PtrUseVisitor.cpp [C++11] Add range based accessors for the Use-Def chain of a Value. 2014-03-09 03:16:01 +00:00
README.txt
RegionInfo.cpp
RegionPass.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
RegionPrinter.cpp
ScalarEvolution.cpp Remove some dead assignements found by scan-build 2014-03-15 22:13:15 +00:00
ScalarEvolutionAliasAnalysis.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
ScalarEvolutionExpander.cpp [C++11] Add range based accessors for the Use-Def chain of a Value. 2014-03-09 03:16:01 +00:00
ScalarEvolutionNormalization.cpp
SparsePropagation.cpp [C++11] Add range based accessors for the Use-Def chain of a Value. 2014-03-09 03:16:01 +00:00
TargetTransformInfo.cpp [TTI] There is actually no realistic way to pop TTI implementations off 2014-03-10 02:45:14 +00:00
Trace.cpp
TypeBasedAliasAnalysis.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-05 07:30:04 +00:00
ValueTracking.cpp [C++11] Add range based accessors for the Use-Def chain of a Value. 2014-03-09 03:16:01 +00:00

README.txt 

Analysis Opportunities:

//===---------------------------------------------------------------------===//

In test/Transforms/LoopStrengthReduce/quadradic-exit-value.ll, the
ScalarEvolution expression for %r is this:

  {1,+,3,+,2}<loop>

Outside the loop, this could be evaluated simply as (%n * %n), however
ScalarEvolution currently evaluates it as

  (-2 + (2 * (trunc i65 (((zext i64 (-2 + %n) to i65) * (zext i64 (-1 + %n) to i65)) /u 2) to i64)) + (3 * %n))

In addition to being much more complicated, it involves i65 arithmetic,
which is very inefficient when expanded into code.

//===---------------------------------------------------------------------===//

In formatValue in test/CodeGen/X86/lsr-delayed-fold.ll,

ScalarEvolution is forming this expression:

((trunc i64 (-1 * %arg5) to i32) + (trunc i64 %arg5 to i32) + (-1 * (trunc i64 undef to i32)))

This could be folded to

(-1 * (trunc i64 undef to i32))

//===---------------------------------------------------------------------===//