llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-10 02:36:06 +00:00

History

Nick Lewycky 42e72ca3d0 Add C++ global operator {new,new[],delete,delete[]}(unsigned {int,long}) to the

memory builtins as equivalent to malloc/free.

This is different from any attribute we have. For example, you can delete the
allocators when their result is unused, but you can't collapse two calls to the
same function, even if no global/memory state has changed in between. The
noalias return states that the result does not alias any other pointer, but
instcombine optimizes malloc() as though the result is non-null for the purpose
of eliminating unused pointers.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127673 91177308-0d34-0410-b5e6-96231b3b80d8

2011-03-15 07:31:32 +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

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Analysis.cpp

Delete the LiveValues pass. I won't get get back to the project it

2011-02-28 19:37:59 +00:00

BasicAliasAnalysis.cpp

Give GetUnderlyingObject a TargetData, to keep it in sync

2011-01-24 18:53:32 +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

convert ConstantVector::get to use ArrayRef.

2011-02-15 00:14:00 +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

Today, the language front ends produces llvm.dbg.* intrinsics, used to encode arguments' debug info, in order any way, most of the times. However, if a front end mix-n-matches llvm.dbg.declare and llvm.dbg.value intrinsics to encode debug info for arguments then code generator needs a way to find argument order.

2011-03-01 22:58:13 +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

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LazyValueInfo.cpp

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LibCallAliasAnalysis.cpp

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LibCallSemantics.cpp

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Lint.cpp

Give GetUnderlyingObject a TargetData, to keep it in sync

2011-01-24 18:53:32 +00:00

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 C++ global operator {new,new[],delete,delete[]}(unsigned {int,long}) to the

2011-03-15 07:31:32 +00:00

MemoryDependenceAnalysis.cpp

Give GetUnderlyingObject a TargetData, to keep it in sync

2011-01-24 18:53:32 +00:00

ModuleDebugInfoPrinter.cpp

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NoAliasAnalysis.cpp

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PathNumbering.cpp

Implementation of path profiling.

2011-01-29 01:09:53 +00:00

PathProfileInfo.cpp

Implementation of path profiling.

2011-01-29 01:09:53 +00:00

PathProfileVerifier.cpp

Implementation of path profiling.

2011-01-29 01:09:53 +00:00

PHITransAddr.cpp

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PostDominators.cpp

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ProfileEstimatorPass.cpp

fix PR8928 by clearing a stale map, patch by Jakub Staszak!

2011-01-24 18:36:51 +00:00

ProfileInfo.cpp

Null initialize a few variables flagged by

2011-01-23 17:05:06 +00:00

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

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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

Remove getMinusSCEVForExitTest().

2011-03-15 01:16:14 +00:00

ScalarEvolutionAliasAnalysis.cpp

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ScalarEvolutionExpander.cpp

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

2011-03-14 16:50:06 +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

Teach ComputeMaskedBits about sub nsw.

2011-03-12 17:18:11 +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))

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