llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-27 14:24:40 +00:00

Files

David Majnemer 9cd99a0724 InstSimplify: Optimize away pointless comparisons

(X & INT_MIN) ? X & INT_MAX : X  into  X & INT_MAX
(X & INT_MIN) ? X : X & INT_MAX  into  X
(X & INT_MIN) ? X | INT_MIN : X  into  X
(X & INT_MIN) ? X : X | INT_MIN  into  X | INT_MIN

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224669 91177308-0d34-0410-b5e6-96231b3b80d8

2014-12-20 03:04:38 +00:00

IPA

Remove the unused FindUsedTypes pass.

2014-11-24 20:53:26 +00:00

AliasAnalysis.cpp

Sink store based on alias analysis

2014-12-15 14:09:53 +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

AliasSet: Simplify mergeSetIn

2014-11-19 19:36:18 +00:00

Analysis.cpp

Revert "Don't make assumptions about the name of private global variables."

2014-11-15 02:03:53 +00:00

AssumptionTracker.cpp

Clean up assume intrinsic pattern matching, no need to check that the argument is a value.

2014-10-25 18:09:01 +00:00

BasicAliasAnalysis.cpp

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +00:00

BlockFrequencyInfo.cpp

Revert "Introduce a string_ostream string builder facilty"

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

BlockFrequencyInfoImpl.cpp

BFI: Saturate when combining edges to a successor

2014-12-05 19:13:42 +00:00

BranchProbabilityInfo.cpp

IR: Split Metadata from Value

2014-12-09 18:38:53 +00:00

CaptureTracking.cpp

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +00:00

CFG.cpp

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +00:00

CFGPrinter.cpp

Modernize raw_fd_ostream's constructor a bit.

2014-08-25 18:16:47 +00:00

CFLAliasAnalysis.cpp

Remove redundant virtual on overriden functions.

2014-11-14 19:06:36 +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 file to CMake build as well.

2014-09-18 00:39:20 +00:00

CodeMetrics.cpp

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +00:00

ConstantFolding.cpp

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +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

[DependenceAnalysis] Allow subscripts of different types

2014-11-16 16:52:44 +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

FunctionTargetTransformInfo.cpp

Add a new pass FunctionTargetTransformInfo. This pass serves as a

2014-09-18 00:34:14 +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: Optimize away pointless comparisons

2014-12-20 03:04:38 +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

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +00:00

JumpInstrTableInfo.cpp

Add Forward Control-Flow Integrity.

2014-11-11 21:08:02 +00:00

LazyCallGraph.cpp

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +00:00

LazyValueInfo.cpp

LazyValueInfo: Actually re-visit partially solved block-values in solveBlockValue()

2014-11-25 17:23:05 +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

remove function names from comments; NFC

2014-10-21 18:26:57 +00:00

Lint.cpp

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +00:00

LLVMBuild.txt

…

Loads.cpp

Revert r220349 to re-instate r220277 with a fix for PR21330 -- quite

2014-11-25 08:20:27 +00:00

LoopInfo.cpp

Revert "IR: MDNode => Value"

2014-11-11 21:30:22 +00:00

LoopPass.cpp

Fix assertion in LICM doFinalization()

2014-09-24 16:48:31 +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

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +00:00

MemoryDependenceAnalysis.cpp

Remove redundant assignment.

2014-12-19 11:29:34 +00:00

ModuleDebugInfoPrinter.cpp

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

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

NoAliasAnalysis.cpp

Simplify code. No functionality change.

2014-10-05 12:21:57 +00:00

PHITransAddr.cpp

Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.)

2014-09-07 18:57:58 +00:00

PostDominators.cpp

[Modules] Fix potential ODR violations by sinking the DEBUG_TYPE

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

PtrUseVisitor.cpp

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +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

Teach ScalarEvolution to exploit min and max expressions when proving

2014-12-15 22:50:15 +00:00

ScalarEvolutionAliasAnalysis.cpp

AA metadata refactoring (introduce AAMDNodes)

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

ScalarEvolutionExpander.cpp

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +00:00

ScalarEvolutionNormalization.cpp

Fix typos in comments, NFC

2014-08-29 21:53:01 +00:00

ScopedNoAliasAA.cpp

Revert "IR: MDNode => Value"

2014-11-11 21:30:22 +00:00

SparsePropagation.cpp

[Modules] Fix potential ODR violations by sinking the DEBUG_TYPE

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

StratifiedSets.h

Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

2014-11-19 07:49:26 +00:00

TargetTransformInfo.cpp

Loop Vectorizer minor changes in the code -

2014-12-14 09:43:50 +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

IR: Split Metadata from Value

2014-12-09 18:38:53 +00:00

ValueTracking.cpp

ValueTracking: Don't recurse too deeply in computeKnownBitsFromAssume

2014-12-12 23:59:29 +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))

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