llvm/Analysis at 06f5ebc5a1604b01689cf2d482dd05f956538af6 - llvm

RPCS3/llvm

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History

Quentin Colombet 06f5ebc5a1 Loop Strength Reduce: Scaling factor cost.

Account for the cost of scaling factor in Loop Strength Reduce when rating the
formulae. This uses a target hook.

The default implementation of the hook is: if the addressing mode is legal, the
scaling factor is free.

<rdar://problem/13806271>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183045 91177308-0d34-0410-b5e6-96231b3b80d8

2013-05-31 21:29:03 +00:00

IPA

This patch breaks up Wrap.h so that it does not have to include all of

2013-05-01 20:59:00 +00:00

AliasAnalysis.cpp

Make BasicAliasAnalysis recognize the fact a noalias argument cannot alias another argument, even if the other argument is not itself marked noalias.

2013-05-28 08:17:48 +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

Support in AAEvaluator to print alias queries of loads/stores with TBAA tags.

2013-03-22 22:34:41 +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

This patch breaks up Wrap.h so that it does not have to include all of

2013-05-01 20:59:00 +00:00

BasicAliasAnalysis.cpp

Make BasicAliasAnalysis recognize the fact a noalias argument cannot alias another argument, even if the other argument is not itself marked noalias.

2013-05-28 08:17:48 +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

Do not reserve space for the ColdEdges and NormalEdges vectors.

2013-05-24 17:00:22 +00:00

CaptureTracking.cpp

Remove unneeded #includes. Use forward declarations instead.

2013-03-10 00:34:01 +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

Remove -print-dbginfo as it is unused & bitrotten.

2013-03-08 18:17:46 +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

ConstantFolding: ComputeMaskedBits wants the scalar size for vectors.

2013-04-19 16:56:24 +00:00

CostModel.cpp

CostModel: Add parameter to instruction cost to further classify operand values

2013-04-04 23:26:21 +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

…

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

InstructionSimplify.cpp: Fix a ligature, "fi", to get rid of utf8 in comment.

2013-04-08 23:05:21 +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

…

Loads.cpp

Change GetPointerBaseWithConstantOffset's DataLayout argument from a

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

LoopInfo.cpp

Add support for llvm.vectorizer metadata

2013-05-28 20:00:34 +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

Respect the 'nobuiltin' attribute when determining if a call is to a memory builtin.

2013-05-16 04:12:04 +00:00

MemoryDependenceAnalysis.cpp

Use only explicit bool conversion operators

2013-05-15 07:36:59 +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

Build fixes for STLPort + GCC

2013-03-29 18:48:45 +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

Build fixes for STLPort + GCC

2013-03-29 18:48:45 +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

RegionInfo: Do not crash if unreachable block is found

2013-05-03 15:48:34 +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

Fix ScalarEvolution::ComputeExitLimitFromCond for 'or' conditions.

2013-05-31 06:43:25 +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

…

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

Loop Strength Reduce: Scaling factor cost.

2013-05-31 21:29:03 +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

Struct-path aware TBAA: change the format of TBAAStructType node.

2013-04-27 00:26:11 +00:00

ValueTracking.cpp

Replace Count{Leading,Trailing}Zeros_{32,64} with count{Leading,Trailing}Zeros.

2013-05-24 22:23:49 +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))

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