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History

Dan Gohman 9268d67079 Teach ScalarEvolution how to compute a tripcount for a loop with

true or false as its exit condition. These are usually eliminated by
SimplifyCFG, but the may be left around during a pass which wishes
to preserve the CFG.

llvm-svn: 96683

2010-02-19 18:12:07 +00:00

IPA

There are two ways of checking for a given type, for example isa<PointerType>(T)

2010-02-16 11:11:14 +00:00

AliasAnalysis.cpp

Partially address a README by having functionattrs consider calls to

2010-01-06 08:45:52 +00:00

AliasAnalysisCounter.cpp

drop the pass name from the output.

2010-01-22 05:52:51 +00:00

AliasAnalysisEvaluator.cpp

There are two ways of checking for a given type, for example isa<PointerType>(T)

2010-02-16 11:11:14 +00:00

AliasDebugger.cpp

adopt getAdjustedAnalysisPointer in a few more passes.

2010-01-20 20:09:02 +00:00

AliasSetTracker.cpp

Change dbgs() back to errs() as Chris requested.

2009-12-23 22:49:57 +00:00

Analysis.cpp

"In order to ease automatic bindings generation, it would be helpful if boolean values were distinguishable from integers. The attached patch introduces "typedef int LLVMBool;", and uses LLVMBool instead of int throughout the C API, wherever a boolean value is called for."

2010-01-09 22:27:07 +00:00

BasicAliasAnalysis.cpp

There are two ways of checking for a given type, for example isa<PointerType>(T)

2010-02-16 11:11:14 +00:00

CaptureTracking.cpp

There are two ways of checking for a given type, for example isa<PointerType>(T)

2010-02-16 11:11:14 +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

add to cmake

2009-12-04 04:15:36 +00:00

ConstantFolding.cpp

Fold bswap(undef) to undef.

2010-02-17 00:54:58 +00:00

DbgInfoPrinter.cpp

Remove dead debug info intrinsics.

2010-01-05 01:10:40 +00:00

DebugInfo.cpp

Use line and column number to distinguish two lexical blocks at the same level.

2010-02-16 21:39:34 +00:00

DomPrinter.cpp

Create Generic DOTGraphTraits Printer/Viewer

2010-01-16 10:56:41 +00:00

InlineCost.cpp

There are two ways of checking for a given type, for example isa<PointerType>(T)

2010-02-16 11:11:14 +00:00

InstCount.cpp

Change dbgs() back to errs() as Chris requested.

2009-12-23 23:29:28 +00:00

InstructionSimplify.cpp

factor some logic out of instcombine into a new SimplifyAddInst method.

2009-11-27 17:42:22 +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

Simplify this code; no need for a custom subclass if it doesn't need

2010-02-14 02:48:58 +00:00

LazyValueInfo.cpp

Convert debug messages to use dbgs(). Generally this means

2009-12-23 20:43:58 +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

Fix "the the" and similar typos.

2010-02-10 16:03:48 +00:00

LoopDependenceAnalysis.cpp

Convert debug messages to use dbgs(). Generally this means

2009-12-23 20:52:41 +00:00

LoopInfo.cpp

Restore dump() methods to Loop and MachineLoop.

2010-01-05 21:08:02 +00:00

LoopPass.cpp

eliminate a bunch more unneeded dynamic_cast's.

2010-01-22 05:37:10 +00:00

Makefile

make -fno-rtti the default unless a directory builds with REQUIRES_RTTI.

2010-01-24 20:43:08 +00:00

MemoryBuiltins.cpp

Fix "the the" and similar typos.

2010-02-10 16:03:48 +00:00

MemoryDependenceAnalysis.cpp

Split critical edges as needed for load PRE.

2010-02-16 19:51:59 +00:00

PHITransAddr.cpp

Change dbgs() back to errs() as Chris requested.

2009-12-23 23:27:15 +00:00

PointerTracking.cpp

There are two ways of checking for a given type, for example isa<PointerType>(T)

2010-02-16 11:11:14 +00:00

PostDominators.cpp

Convert debug messages to use dbgs(). Generally this means

2009-12-23 21:16:54 +00:00

ProfileEstimatorPass.cpp

adopt getAdjustedAnalysisPointer in a few more passes.

2010-01-20 20:09:02 +00:00

ProfileInfo.cpp

adopt getAdjustedAnalysisPointer in a few more passes.

2010-01-20 20:09:02 +00:00

ProfileInfoLoader.cpp

Reapplied r81355 with the problems fixed.

2009-09-16 11:35:50 +00:00

ProfileInfoLoaderPass.cpp

adopt getAdjustedAnalysisPointer in a few more passes.

2010-01-20 20:09:02 +00:00

ProfileVerifierPass.cpp

Convert debug messages to use dbgs(). Generally this means

2009-12-23 22:10:20 +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

Teach ScalarEvolution how to compute a tripcount for a loop with

2010-02-19 18:12:07 +00:00

ScalarEvolutionAliasAnalysis.cpp

There are two ways of checking for a given type, for example isa<PointerType>(T)

2010-02-16 11:11:14 +00:00

ScalarEvolutionExpander.cpp

Fix SCEVExpander's existing PHI reuse checking to recognize the

2010-02-17 02:39:31 +00:00

SparsePropagation.cpp

Convert debug messages to use dbgs(). Generally this means

2009-12-23 22:28:01 +00:00

Trace.cpp

Convert debug messages to use dbgs(). Generally this means

2009-12-23 22:35:10 +00:00

ValueTracking.cpp

There are two ways of checking for a given type, for example isa<PointerType>(T)

2010-02-16 11:11:14 +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.

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