llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-11-01 00:17:01 +00:00

Files

Shuxin Yang d2eaf45af4 Fix a problem in alias analysis. It is about the misinterpretation of "Object".

This problem is exposed by r171325 which is already reverted. It is rather
hard to fabricate a testing case without it.

r171325 should *NOT* be resurrected as it has a potential problem although 
this problem dosen't directly contribute to PR14988.

The bug is tracked by:
  - rdar://13063553, and
  - http://llvm.org/bugs/show_bug.cgi?id=14988

Thank Arnold for coming up a better solution to this problem. After
comparing this solution and my original proposal, I decided to ditch mine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176225 91177308-0d34-0410-b5e6-96231b3b80d8

2013-02-28 00:24:45 +00:00

IPA

Begin fleshing out an interface in TTI for modelling the costs of

2013-01-22 11:26:02 +00:00

AliasAnalysis.cpp

Move isKnownNonNull out of AliasAnalysis.h and into ValueTracking.cpp since

2013-01-31 02:40:59 +00:00

AliasAnalysisCounter.cpp

Use the new script to sort the includes of every file under lib.

2012-12-03 16:50:05 +00:00

AliasAnalysisEvaluator.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

AliasDebugger.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

AliasSetTracker.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

Analysis.cpp

Move the initialization to the Analysis library as well as the pass.

2013-01-07 03:33:08 +00:00

BasicAliasAnalysis.cpp

Fix a problem in alias analysis. It is about the misinterpretation of "Object".

2013-02-28 00:24:45 +00:00

BlockFrequencyInfo.cpp

Use the new script to sort the includes of every file under lib.

2012-12-03 16:50:05 +00:00

BranchProbabilityInfo.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

CaptureTracking.cpp

Give CaptureTracker::shouldExplore a base implementation. Most users want to do

2012-10-08 22:12:48 +00:00

CFGPrinter.cpp

Use the new script to sort the includes of every file under lib.

2012-12-03 16:50:05 +00:00

CMakeLists.txt

Sink InlineCost.cpp into IPA -- it is now officially an interprocedural

2013-01-21 12:09:41 +00:00

CodeMetrics.cpp

Begin fleshing out an interface in TTI for modelling the costs of

2013-01-22 11:26:02 +00:00

ConstantFolding.cpp

Constant fold vector bitcasts of halves similarly to how floats and doubles are folded. Test case included.

2013-02-26 22:51:07 +00:00

CostModel.cpp

Cost model: Add check for reverse shuffles to CostModel analysis

2013-02-12 02:40:37 +00:00

DbgInfoPrinter.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

DependenceAnalysis.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

DominanceFrontier.cpp

Use the new script to sort the includes of every file under lib.

2012-12-03 16:50:05 +00:00

DomPrinter.cpp

remove the blank line from previous ci.

2012-02-04 03:18:47 +00:00

InstCount.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

InstructionSimplify.cpp

Identify and simplify idempotent intrinsics. Test case included.

2013-02-07 19:26:05 +00:00

Interval.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

IntervalPartition.cpp

…

IVUsers.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

LazyValueInfo.cpp

Move isKnownNonNull out of AliasAnalysis.h and into ValueTracking.cpp since

2013-01-31 02:40:59 +00:00

LibCallAliasAnalysis.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

LibCallSemantics.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

Lint.cpp

Change GetPointerBaseWithConstantOffset's DataLayout argument from a

2013-01-31 02:00:45 +00:00

LLVMBuild.txt

LLVMBuild: Introduce a common section which currently has a list of the

2011-12-12 22:45:54 +00:00

Loads.cpp

Change GetPointerBaseWithConstantOffset's DataLayout argument from a

2013-01-31 02:00:45 +00:00

LoopInfo.cpp

Metadata for annotating loops as parallel. The first consumer for this

2013-02-13 18:08:57 +00:00

LoopPass.cpp

Enable the new LoopInfo algorithm by default.

2012-06-26 04:11:38 +00:00

Makefile

…

MemDepPrinter.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

MemoryBuiltins.cpp

Reverting r171325 & r172363. This was causing a mis-compile on the self-hosted LTO build bots.

2013-01-17 21:28:46 +00:00

MemoryDependenceAnalysis.cpp

Unify clang/llvm attributes for asan/tsan/msan (LLVM part)

2013-02-26 06:58:09 +00:00

ModuleDebugInfoPrinter.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

NoAliasAnalysis.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

PathNumbering.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

PathProfileInfo.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

PathProfileVerifier.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

PHITransAddr.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

PostDominators.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

ProfileDataLoader.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

ProfileDataLoaderPass.cpp

Revert "Add LLVMContext::emitWarning methods and use them. <rdar://problem/12867368>"

2013-02-08 21:48:29 +00:00

ProfileEstimatorPass.cpp

Use the new script to sort the includes of every file under lib.

2012-12-03 16:50:05 +00:00

ProfileInfo.cpp

Use the new script to sort the includes of every file under lib.

2012-12-03 16:50:05 +00:00

ProfileInfoLoader.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

ProfileInfoLoaderPass.cpp

Revert "Add LLVMContext::emitWarning methods and use them. <rdar://problem/12867368>"

2013-02-08 21:48:29 +00:00

ProfileVerifierPass.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

PtrUseVisitor.cpp

Hoist the GEP constant address offset computation to a common home on

2012-12-11 10:29:10 +00:00

README.txt

…

RegionInfo.cpp

Use the new script to sort the includes of every file under lib.

2012-12-03 16:50:05 +00:00

RegionPass.cpp

Remove the the block_node_iterator of Region, replace it by the block_iterator.

2012-08-27 13:49:24 +00:00

RegionPrinter.cpp

Use the new script to sort the includes of every file under lib.

2012-12-03 16:50:05 +00:00

ScalarEvolution.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

ScalarEvolutionAliasAnalysis.cpp

Use the new script to sort the includes of every file under lib.

2012-12-03 16:50:05 +00:00

ScalarEvolutionExpander.cpp

SCEVExpander fix. RAUW needs to update the InsertedExpressions cache.

2013-01-14 21:00:37 +00:00

ScalarEvolutionNormalization.cpp

More dead code removal (using -Wunreachable-code)

2012-01-20 21:51:11 +00:00

SparsePropagation.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

TargetTransformInfo.cpp

ARM cost model: Address computation in vector mem ops not free

2013-02-08 14:50:48 +00:00

Trace.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

TypeBasedAliasAnalysis.cpp

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

ValueTracking.cpp

Move isKnownNonNull out of AliasAnalysis.h and into ValueTracking.cpp since

2013-01-31 02:40:59 +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))

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