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2166f62290
llvm-6502/lib/Analysis
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Dan Gohman 2166f62290 Add a function to Passes.h to allow clients to create instances 
of the ScalarEvolution pass without needing to #include ScalarEvolution.h.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85716 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01 15:28:36 +00:00
..
IPA Don't #include Pass.h from CallGraph.h. 2009-11-01 15:23:35 +00:00
AliasAnalysis.cpp Remove AllocationInst. Since MallocInst went away, AllocaInst is the only subclass of AllocationInst, so it no longer is necessary. 2009-10-23 21:09:37 +00:00
AliasAnalysisCounter.cpp Remove includes of Support/Compiler.h that are no longer needed after the 2009-10-25 06:57:41 +00:00
AliasAnalysisEvaluator.cpp Remove includes of Support/Compiler.h that are no longer needed after the 2009-10-25 06:57:41 +00:00
AliasDebugger.cpp Remove includes of Support/Compiler.h that are no longer needed after the 2009-10-25 06:57:41 +00:00
AliasSetTracker.cpp Rename MallocFreeHelper as MemoryBuiltins 2009-10-27 20:05:49 +00:00
Analysis.cpp Tidy #includes. 2009-08-11 16:02:12 +00:00
BasicAliasAnalysis.cpp Rename MallocFreeHelper as MemoryBuiltins 2009-10-27 20:05:49 +00:00
CaptureTracking.cpp Rename MallocFreeHelper as MemoryBuiltins 2009-10-27 20:05:49 +00:00
CFGPrinter.cpp Remove includes of Support/Compiler.h that are no longer needed after the 2009-10-25 06:57:41 +00:00
CMakeLists.txt Rename MallocFreeHelper as MemoryBuiltins 2009-10-27 20:05:49 +00:00
ConstantFolding.cpp Teach FoldBitCast to be able to handle bitcasts from (e.g.) i128 -> <4 x float>. 2009-10-25 06:15:37 +00:00
DbgInfoPrinter.cpp Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces. 2009-10-25 06:33:48 +00:00
DebugInfo.cpp If string field is empty then return NULL. 2009-10-30 22:52:47 +00:00
DomPrinter.cpp fix the other issue with ID's, hopefully really fixing the linux build. 2009-10-18 04:58:34 +00:00
InlineCost.cpp pull check for return inst out of loop, never inline a callee that contains 2009-11-01 03:07:53 +00:00
InstCount.cpp Remove FreeInst. 2009-10-26 23:43:48 +00:00
Interval.cpp Change Pass::print to take a raw ostream instead of std::ostream, 2009-08-23 06:03:38 +00:00
IntervalPartition.cpp Change Pass::print to take a raw ostream instead of std::ostream, 2009-08-23 06:03:38 +00:00
IVUsers.cpp Instead of testing whether an instruction dominates the loop preheader, 2009-09-27 15:30:00 +00:00
LibCallAliasAnalysis.cpp LibCallAliasAnalysis doesn't use TargetData. 2009-07-31 20:56:29 +00:00
LibCallSemantics.cpp Remove Value::getNameLen 2009-07-26 08:34:35 +00:00
LiveValues.cpp Delete an obsolete sentance from a comment. 2009-05-31 16:18:57 +00:00
LoopDependenceAnalysis.cpp remove a few dead insertion methods. 2009-08-24 02:39:26 +00:00
LoopInfo.cpp Fix another place that calls Loop::contains a lot to construct a sorted 2009-10-20 20:41:13 +00:00
LoopPass.cpp Fix this debug output to handle the case where the loop has been deleted. 2009-09-28 15:40:01 +00:00
Makefile Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
MemoryBuiltins.cpp fix 80-col. 2009-10-29 04:41:24 +00:00
MemoryDependenceAnalysis.cpp Treat lifetime begin/end markers as allocations/frees respectively for the 2009-10-28 07:05:35 +00:00
PointerTracking.cpp Rename MallocFreeHelper as MemoryBuiltins 2009-10-27 20:05:49 +00:00
PostDominators.cpp Change Pass::print to take a raw ostream instead of std::ostream, 2009-08-23 06:03:38 +00:00
ProfileEstimatorPass.cpp Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces. 2009-10-25 06:33:48 +00:00
ProfileInfo.cpp Remove includes of Support/Compiler.h that are no longer needed after the 2009-10-25 06:57:41 +00:00
ProfileInfoLoader.cpp Reapplied r81355 with the problems fixed. 2009-09-16 11:35:50 +00:00
ProfileInfoLoaderPass.cpp Remove includes of Support/Compiler.h that are no longer needed after the 2009-10-25 06:57:41 +00:00
ProfileVerifierPass.cpp Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces. 2009-10-25 06:33:48 +00:00
README.txt Create a README.txt for lib/Analysis, and add an entry. 2009-09-28 18:38:53 +00:00
ScalarEvolution.cpp Add a function to Passes.h to allow clients to create instances 2009-11-01 15:28:36 +00:00
ScalarEvolutionAliasAnalysis.cpp Make ScalarEvolutionAliasAnalysis slightly more aggressive, by making an 2009-10-31 14:32:25 +00:00
ScalarEvolutionExpander.cpp Introduce and use convenience methods for getting pointer types 2009-10-06 15:40:36 +00:00
SparsePropagation.cpp rename indbr -> indirectbr to appease the residents of #llvm. 2009-10-28 00:19:10 +00:00
Trace.cpp eliminate the "Value" printing methods that print to a std::ostream. 2009-08-23 04:37:46 +00:00
ValueTracking.cpp Remove AllocationInst. Since MallocInst went away, AllocaInst is the only subclass of AllocationInst, so it no longer is necessary. 2009-10-23 21:09:37 +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.

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