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History

Victor Hernandez aee71b4e81 Improve llvm.dbg.declare intrinsic by referring directly to the storage in its first argument, via function-local metadata (instead of via a bitcast). This patch also cleans up code that expects there to be a bitcast in the first argument and testcases that call llvm.dbg.declare. llvm-svn: 93504		2010-01-15 03:37:48 +00:00
..
IPA	Change dbgs() back to errs() for assert messages as Chris requested.	2009-12-23 23:14:41 +00:00
AliasAnalysis.cpp	Partially address a README by having functionattrs consider calls to	2010-01-06 08:45:52 +00:00
AliasAnalysisCounter.cpp	Change dbgs() back to errs() as Chris requested.	2009-12-23 22:49:57 +00:00
AliasAnalysisEvaluator.cpp	Change dbgs() back to errs() as Chris requested.	2009-12-23 22:49:57 +00:00
AliasDebugger.cpp	Remove the AliasAnalysis::getMustAliases method, which is dead.	2009-11-22 16:01:44 +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	move DecomposeGEPExpression out into ValueTracking.cpp	2009-11-26 17:12:50 +00:00
CaptureTracking.cpp	Reuse the Threshold value to size these containers because it's	2009-12-09 18:48:53 +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	fix PR5978 by peeling the loop so that we avoid shifting the	2010-01-08 19:02:23 +00:00
DbgInfoPrinter.cpp	Remove dead debug info intrinsics.	2010-01-05 01:10:40 +00:00
DebugInfo.cpp	Improve llvm.dbg.declare intrinsic by referring directly to the storage in its first argument, via function-local metadata (instead of via a bitcast).	2010-01-15 03:37:48 +00:00
DomPrinter.cpp	Remove ShortNames from getNodeLabel in DOTGraphTraits	2009-11-30 12:38:47 +00:00
InlineCost.cpp	Pad my commit stats by reducing indentation in this now separate	2010-01-14 23:00:10 +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	Use WriteAsOperand instead of getName() to print loop header names,	2010-01-09 18:17:45 +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	remove redundant foward declaration. This function is already in	2009-11-11 00:21:21 +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	Fix this debug output to handle the case where the loop has been deleted.	2009-09-28 15:40:01 +00:00
Makefile
MemoryBuiltins.cpp	Simplify ComputeMultiple so that it doesn't depend on TargetData.	2009-11-18 00:58:27 +00:00
MemoryDependenceAnalysis.cpp	The phi translated pointer can be computed when returning a partially cached result	2009-12-22 04:25:02 +00:00
PHITransAddr.cpp	Change dbgs() back to errs() as Chris requested.	2009-12-23 23:27:15 +00:00
PointerTracking.cpp	remove a bunch of extraneous LLVMContext arguments	2009-11-06 04:27:31 +00:00
PostDominators.cpp	Convert debug messages to use dbgs(). Generally this means	2009-12-23 21:16:54 +00:00
ProfileEstimatorPass.cpp	Convert debug messages to use dbgs(). Generally this means	2009-12-23 21:27:29 +00:00
ProfileInfo.cpp	Change dbgs() back to errs() for assert messages as Chris requested.	2009-12-23 22:59:29 +00:00
ProfileInfoLoader.cpp	Reapplied r81355 with the problems fixed.	2009-09-16 11:35:50 +00:00
ProfileInfoLoaderPass.cpp	Change dbgs() back to errs() for assert messages as Chris requested.	2009-12-23 23:00:50 +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	Use WriteAsOperand instead of getName() to print loop header names,	2010-01-09 18:17:45 +00:00
ScalarEvolutionAliasAnalysis.cpp	Make ScalarEvolutionAliasAnalysis slightly more aggressive, by making an	2009-10-31 14:32:25 +00:00
ScalarEvolutionExpander.cpp	Fix a comment typo.	2009-12-04 01:33:04 +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	teach ComputeNumSignBits to look through PHI nodes.	2010-01-07 23:44:37 +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.

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