llvm/Analysis at 7a0201c6a60d95a4afd6434a790526c6217b111f - llvm

RPCS3/llvm

mirror of https://github.com/RPCS3/llvm.git synced 2025-01-15 14:28:25 +00:00

History

Jiangning Liu 1505fa4376 In LVI(Lazy Value Info), originally value on a BB can only be caculated once,

and the lattice will be updated to be a state other than "undefined". This
limiation could miss some opportunities of lowering "overdefined" to be an
even accurate value. So this patch ask the algorithm to try to lower the
lattice value again even if the value has been lowered to be "overdefined".



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215343 91177308-0d34-0410-b5e6-96231b3b80d8

2014-08-11 05:02:04 +00:00

IPA

Remove Support/IncludeFile.h and its only user. This is actively harmful, since

2014-08-07 20:41:17 +00:00

AliasAnalysis.cpp

AA metadata refactoring (introduce AAMDNodes)

2014-07-24 12:16:19 +00:00

AliasAnalysisCounter.cpp

[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

2014-04-15 04:59:12 +00:00

AliasAnalysisEvaluator.cpp

AA metadata refactoring (introduce AAMDNodes)

2014-07-24 12:16:19 +00:00

AliasDebugger.cpp

[C++11] Add 'override' keyword to virtual methods that override their base class.

2014-03-05 07:30:04 +00:00

AliasSetTracker.cpp

AA metadata refactoring (introduce AAMDNodes)

2014-07-24 12:16:19 +00:00

Analysis.cpp

Add scoped-noalias metadata

2014-07-24 14:25:39 +00:00

BasicAliasAnalysis.cpp

Add @llvm.assume, lowering, and some basic properties

2014-07-25 21:13:35 +00:00

BlockFrequencyInfo.cpp

Revert "Introduce a string_ostream string builder facilty"

2014-06-26 22:52:05 +00:00

BlockFrequencyInfoImpl.cpp

BFI: Add constructor for Weight

2014-07-12 00:26:00 +00:00

BranchProbabilityInfo.cpp

Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges."

2014-07-21 17:06:51 +00:00

CaptureTracking.cpp

Match semantics of PointerMayBeCapturedBefore to its name by default

2014-07-21 21:30:22 +00:00

CFG.cpp

[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

2014-04-15 04:59:12 +00:00

CFGPrinter.cpp

Clean up language and grammar.

2014-05-20 17:11:11 +00:00

CGSCCPassManager.cpp

[PM] Add a new-PM-style CGSCC pass manager using the newly added

2014-04-21 11:12:00 +00:00

CMakeLists.txt

Add scoped-noalias metadata

2014-07-24 14:25:39 +00:00

CodeMetrics.cpp

Consistent use of the noduplicate attribute.

2014-03-17 16:19:07 +00:00

ConstantFolding.cpp

Look through addrspacecast in IsConstantOffsetFromGlobal

2014-07-14 22:39:26 +00:00

CostModel.cpp

[CostModel][x86] Improved cost model for alternate shuffles.

2014-07-03 22:24:18 +00:00

Delinearization.cpp

remove BasePointer before delinearizing

2014-05-27 22:41:51 +00:00

DependenceAnalysis.cpp

remove BasePointer before delinearizing

2014-05-27 22:41:51 +00:00

DominanceFrontier.cpp

Templatify DominanceFrontier.

2014-07-12 21:59:52 +00:00

DomPrinter.cpp

…

InstCount.cpp

[Modules] Fix potential ODR violations by sinking the DEBUG_TYPE

2014-04-22 02:48:03 +00:00

InstructionSimplify.cpp

InstSimplify: Simplify (X - (0 - Y)) if the second sub is NUW

2014-07-31 04:49:18 +00:00

Interval.cpp

Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges."

2014-07-21 17:06:51 +00:00

IntervalPartition.cpp

[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

2014-04-15 04:59:12 +00:00

IVUsers.cpp

Add back functionality removed in r210497.

2014-06-21 02:43:02 +00:00

JumpInstrTableInfo.cpp

Add a new attribute called 'jumptable' that creates jump-instruction tables for functions marked with this attribute.

2014-06-05 19:29:43 +00:00

LazyCallGraph.cpp

Fix typos

2014-05-15 01:52:21 +00:00

LazyValueInfo.cpp

In LVI(Lazy Value Info), originally value on a BB can only be caculated once,

2014-08-11 05:02:04 +00:00

LibCallAliasAnalysis.cpp

[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

2014-04-15 04:59:12 +00:00

LibCallSemantics.cpp

[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

2014-04-15 04:59:12 +00:00

Lint.cpp

Revert "Introduce a string_ostream string builder facilty"

2014-06-26 22:52:05 +00:00

LLVMBuild.txt

…

Loads.cpp

AA metadata refactoring (introduce AAMDNodes)

2014-07-24 12:16:19 +00:00

LoopInfo.cpp

Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges."

2014-07-21 17:06:51 +00:00

LoopPass.cpp

Add back functionality removed in r210497.

2014-06-21 02:43:02 +00:00

Makefile

…

MemDepPrinter.cpp

[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

2014-04-15 04:59:12 +00:00

MemoryBuiltins.cpp

[Modules] Fix potential ODR violations by sinking the DEBUG_TYPE

2014-04-22 02:48:03 +00:00

MemoryDependenceAnalysis.cpp

AA metadata refactoring (introduce AAMDNodes)

2014-07-24 12:16:19 +00:00

ModuleDebugInfoPrinter.cpp

[C++11] Change DebugInfoFinder to use range-based loops

2014-03-18 09:41:07 +00:00

NoAliasAnalysis.cpp

Improve BasicAA CS-CS queries (redux)

2014-07-17 01:28:25 +00:00

PHITransAddr.cpp

[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

2014-04-15 04:59:12 +00:00

PostDominators.cpp

[Modules] Fix potential ODR violations by sinking the DEBUG_TYPE

2014-04-22 02:48:03 +00:00

PtrUseVisitor.cpp

[C++11] Add range based accessors for the Use-Def chain of a Value.

2014-03-09 03:16:01 +00:00

README.txt

…

RegionInfo.cpp

Fix msc17 build. RegionInfo::RegionInfo::recalculate() doesn't make sense.

2014-07-20 03:57:51 +00:00

RegionPass.cpp

Templatify RegionInfo so it works on MachineBasicBlocks

2014-07-19 18:29:29 +00:00

RegionPrinter.cpp

Templatify RegionInfo so it works on MachineBasicBlocks

2014-07-19 18:29:29 +00:00

ScalarEvolution.cpp

Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges."

2014-07-21 17:06:51 +00:00

ScalarEvolutionAliasAnalysis.cpp

AA metadata refactoring (introduce AAMDNodes)

2014-07-24 12:16:19 +00:00

ScalarEvolutionExpander.cpp

Fix ScalarEvolutionExpander when creating a PHI in a block with duplicate predecessors

2014-07-31 19:13:38 +00:00

ScalarEvolutionNormalization.cpp

test check-in: added missing parenthesis in comment

2014-05-28 19:03:33 +00:00

ScopedNoAliasAA.cpp

Simplify and improve scoped-noalias metadata semantics

2014-07-25 15:50:02 +00:00

SparsePropagation.cpp

[Modules] Fix potential ODR violations by sinking the DEBUG_TYPE

2014-04-22 02:48:03 +00:00

TargetTransformInfo.cpp

Teach the SLP Vectorizer that keeping some values live over a callsite can have a cost.

2014-08-05 12:30:34 +00:00

Trace.cpp

…

TypeBasedAliasAnalysis.cpp

Add scoped-noalias metadata

2014-07-24 14:25:39 +00:00

ValueTracking.cpp

Make use of the align parameter attribute for all pointer arguments

2014-07-22 16:58:55 +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))

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