llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-12 03:32:10 +00:00

History

Dan Gohman 4f8eea82d8 Generalize target-independent folding rules for sizeof to handle more

cases, and implement target-independent folding rules for alignof and
offsetof. Also, reassociate reassociative operators when it leads to
more folding.

Generalize ScalarEvolution's isOffsetOf to recognize offsetof on
arrays. Rename getAllocSizeExpr to getSizeOfExpr, and getFieldOffsetExpr
to getOffsetOfExpr, for consistency with analagous ConstantExpr routines.

Make the target-dependent folder promote GEP array indices to
pointer-sized integers, to make implicit casting explicit and exposed
to subsequent folding.

And add a bunch of testcases for this new functionality, and a bunch
of related existing functionality.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94987 91177308-0d34-0410-b5e6-96231b3b80d8

2010-02-01 18:27:38 +00:00

IPA

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

2010-01-24 20:43:08 +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

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

2009-12-23 22:49:57 +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

add some new methods to adjust this pointers. Not used yet.

2010-01-20 19:26:14 +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

…

CMakeLists.txt

add to cmake

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

ConstantFolding.cpp

Generalize target-independent folding rules for sizeof to handle more

2010-02-01 18:27:38 +00:00

DbgInfoPrinter.cpp

Remove dead debug info intrinsics.

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

DebugInfo.cpp

Before inserting llvm.dbg.declare intrinsic at the end of a basic block, check whether the basic block has a terminator or not.

2010-01-29 18:30:57 +00:00

DomPrinter.cpp

Create Generic DOTGraphTraits Printer/Viewer

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

InlineCost.cpp

Fix inline cost predictions with SCIENCE.

2010-01-26 23:21:56 +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

…

IntervalPartition.cpp

…

IVUsers.cpp

Re-implement the main strength-reduction portion of LoopStrengthReduction.

2010-01-21 02:09:26 +00:00

LazyValueInfo.cpp

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

2009-12-23 20:43:58 +00:00

LibCallAliasAnalysis.cpp

…

LibCallSemantics.cpp

…

LiveValues.cpp

…

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

…

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

…

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

…

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

…

ScalarEvolution.cpp

Generalize target-independent folding rules for sizeof to handle more

2010-02-01 18:27:38 +00:00

ScalarEvolutionAliasAnalysis.cpp

adopt getAdjustedAnalysisPointer in a few more passes.

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

ScalarEvolutionExpander.cpp

Generalize target-independent folding rules for sizeof to handle more

2010-02-01 18:27:38 +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

It looks like the changes to the SRem logic of SimplifyDemandedUseBits

2010-01-29 06:18:37 +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.

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