llvm/Analysis at e637d65af355ef24ef2bd8d6072861d7354d5e91 - llvm

RPCS3/llvm

mirror of https://github.com/RPCS3/llvm.git synced 2025-01-26 20:57:15 +00:00

History

Karthik Bhat e637d65af3 Allow vectorization of division by uniform power of 2.

This patch adds support to recognize division by uniform power of 2 and modifies the cost table to vectorize division by uniform power of 2 whenever possible.
Updates Cost model for Loop and SLP Vectorizer.The cost table is currently only updated for X86 backend.
Thanks to Hal, Andrea, Sanjay for the review. (http://reviews.llvm.org/D4971)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216371 91177308-0d34-0410-b5e6-96231b3b80d8

2014-08-25 04:56:54 +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

Use range based for loops to avoid needing to re-mention SmallPtrSet size.

2014-08-24 23:23:06 +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

Repace SmallPtrSet with SmallPtrSetImpl in function arguments to avoid needing to mention the size.

2014-08-21 05:55:13 +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

Analysis: unique_ptr-ify DependenceAnalysis::collectCoeffInfo

2014-08-25 00:28:43 +00:00

DominanceFrontier.cpp

Templatify DominanceFrontier.

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

DomPrinter.cpp

[PM] Split DominatorTree into a concrete analysis result object which

2014-01-13 13:07:17 +00:00

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

Repace SmallPtrSet with SmallPtrSetImpl in function arguments to avoid needing to mention the size.

2014-08-21 05:55:13 +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

Repace SmallPtrSet with SmallPtrSetImpl in function arguments to avoid needing to mention the size.

2014-08-21 05:55:13 +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

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

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

2010-01-24 20:43:08 +00:00

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

Use range based for loops to avoid needing to re-mention SmallPtrSet size.

2014-08-24 23:23:06 +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

When checking whether the special handling for an addrec increment which

2010-04-26 21:46:36 +00:00

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

Allow vectorization of division by uniform power of 2.

2014-08-25 04:56:54 +00:00

Trace.cpp

Put the functionality for printing a value to a raw_ostream as an

2014-01-09 02:29:41 +00:00

TypeBasedAliasAnalysis.cpp

Add scoped-noalias metadata

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

ValueTracking.cpp

ValueTracking: Figure out more bits when looking at add/sub

2014-08-22 00:40:43 +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))

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