llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-13 10:32:06 +00:00

History

Eli Friedman 9055ccdb6b PR9604; try to deal with RAUW updates correctly in the AST. I'm not convinced

it's completely safe to cache the AST across LICM runs even with this fix,
but this fix can't hurt.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129198 91177308-0d34-0410-b5e6-96231b3b80d8

2011-04-09 06:55:46 +00:00

IPA

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AliasAnalysis.cpp

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AliasAnalysisCounter.cpp

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AliasAnalysisEvaluator.cpp

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AliasDebugger.cpp

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AliasSetTracker.cpp

PR9604; try to deal with RAUW updates correctly in the AST. I'm not convinced

2011-04-09 06:55:46 +00:00

Analysis.cpp

remove postdom frontiers, because it is dead. Forward dom frontiers are

2011-04-05 21:57:17 +00:00

BasicAliasAnalysis.cpp

Revert r128140 for now.

2011-03-23 15:51:12 +00:00

CaptureTracking.cpp

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CFGPrinter.cpp

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CMakeLists.txt

Unbreak CMake build.

2011-03-01 00:02:51 +00:00

ConstantFolding.cpp

Constant folding support for calls to umul.with.overflow(), basically identical to the smul.with.overflow() code.

2011-03-27 14:26:13 +00:00

DbgInfoPrinter.cpp

Move DbgInfoPrinter specific utlities inside DbgInfoPrinter.cpp

2011-02-15 17:36:11 +00:00

DebugInfo.cpp

Remove DIFactory. Patch by Devang.

2011-03-02 20:30:37 +00:00

DIBuilder.cpp

Add support to encode function's template parameters.

2011-04-05 22:52:06 +00:00

DominanceFrontier.cpp

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DomPrinter.cpp

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InlineCost.cpp

Remove premature optimization that avoided calculating argument weights

2011-02-06 21:27:46 +00:00

InstCount.cpp

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InstructionSimplify.cpp

Fix two cases I forgot to update when doing a mental "getSwappedPredicate".

2011-03-09 08:20:06 +00:00

Interval.cpp

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IntervalPartition.cpp

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IVUsers.cpp

Avoid creating canonical induction variables for non-native types.

2011-03-18 16:50:32 +00:00

LazyValueInfo.cpp

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LibCallAliasAnalysis.cpp

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LibCallSemantics.cpp

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Lint.cpp

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Loads.cpp

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LoopDependenceAnalysis.cpp

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LoopInfo.cpp

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LoopPass.cpp

Introduce DebugInfoProbe. This is used to monitor how llvm optimizer is treating debugging information.

2011-03-10 00:21:25 +00:00

Makefile

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MemDepPrinter.cpp

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MemoryBuiltins.cpp

Add comments for the demanglings. Correct mangled form of operator delete!

2011-03-17 05:20:12 +00:00

MemoryDependenceAnalysis.cpp

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ModuleDebugInfoPrinter.cpp

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NoAliasAnalysis.cpp

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PathNumbering.cpp

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PathProfileInfo.cpp

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PathProfileVerifier.cpp

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PHITransAddr.cpp

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PostDominators.cpp

remove postdom frontiers, because it is dead. Forward dom frontiers are

2011-04-05 21:57:17 +00:00

ProfileEstimatorPass.cpp

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ProfileInfo.cpp

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ProfileInfoLoader.cpp

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ProfileInfoLoaderPass.cpp

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ProfileVerifierPass.cpp

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README.txt

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RegionInfo.cpp

Region: Allow user control the printing style of the print function.

2011-04-04 07:19:18 +00:00

RegionPass.cpp

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RegionPrinter.cpp

RegionPrinter: Ignore back edges when layouting the graph

2011-02-27 04:11:07 +00:00

ScalarEvolution.cpp

Added isValidRewrite() to check the result of ScalarEvolutionExpander.

2011-03-17 23:51:11 +00:00

ScalarEvolutionAliasAnalysis.cpp

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ScalarEvolutionExpander.cpp

Remove PHINode::reserveOperandSpace(). Instead, add a parameter to

2011-03-30 11:28:46 +00:00

ScalarEvolutionNormalization.cpp

Added SCEV::NoWrapFlags to manage unsigned, signed, and self wrap

2011-03-14 16:50:06 +00:00

SparsePropagation.cpp

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Trace.cpp

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TypeBasedAliasAnalysis.cpp

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ValueTracking.cpp

Don't assume something which might be a constant expression is an instruction.

2011-04-02 22:11:56 +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))

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