llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-15 23:31:37 +00:00

History

Eric Christopher acc8f2d938 Revert "Address Duncan's CR request:"

This reverts commit 20a05be15ea5271ab6185b83200fa88263362400. (svn rev 138340)

Conflicts:

	test/Transforms/InstCombine/bitcast.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138366 91177308-0d34-0410-b5e6-96231b3b80d8

2011-08-23 20:11:10 +00:00

IPA

Silence a bunch (but not all) "variable written but not read" warnings

2011-08-12 14:54:45 +00:00

AliasAnalysis.cpp

Misc analysis passes that need to be aware of atomic load/store.

2011-08-15 20:54:19 +00:00

AliasAnalysisCounter.cpp

…

AliasAnalysisEvaluator.cpp

land David Blaikie's patch to de-constify Type, with a few tweaks.

2011-07-18 04:54:35 +00:00

AliasDebugger.cpp

…

AliasSetTracker.cpp

Atomic load/store support in LICM.

2011-08-15 20:52:09 +00:00

Analysis.cpp

C API functions must be able to see their extern "C" definitions, or it will be impossible to call them from C.

2011-08-19 01:36:54 +00:00

BasicAliasAnalysis.cpp

Explicitly cast narrowing conversions inside {}s that will become errors in

2011-07-27 06:22:51 +00:00

BlockFrequencyInfo.cpp

Add more constantness in BlockFrequencyInfo.

2011-08-03 21:30:57 +00:00

BranchProbabilityInfo.cpp

Change SmallVector to SmallPtrSet in BranchProbabilityInfo. Handle cases where

2011-08-01 19:16:26 +00:00

CaptureTracking.cpp

…

CFGPrinter.cpp

…

CMakeLists.txt

Rewrite the CMake build to use explicit dependencies between libraries,

2011-07-29 00:14:25 +00:00

ConstantFolding.cpp

Revert "Address Duncan's CR request:"

2011-08-23 20:11:10 +00:00

DbgInfoPrinter.cpp

…

DebugInfo.cpp

Do not use named md nodes to track variables that are completely optimized. This does not scale while doing LTO with debug info. New approach is to include list of variables in the subprogram info directly.

2011-08-19 23:28:12 +00:00

DIBuilder.cpp

2011-08-19 23:28:12 +00:00

DominanceFrontier.cpp

…

DomPrinter.cpp

…

InlineCost.cpp

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InstCount.cpp

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InstructionSimplify.cpp

Revert r137781; I agree with Duncan's comment that the situation in question is clearly impossible given the current structure of the code.

2011-08-17 19:31:49 +00:00

Interval.cpp

…

IntervalPartition.cpp

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IVUsers.cpp

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LazyValueInfo.cpp

land David Blaikie's patch to de-constify Type, with a few tweaks.

2011-07-18 04:54:35 +00:00

LibCallAliasAnalysis.cpp

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LibCallSemantics.cpp

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Lint.cpp

land David Blaikie's patch to de-constify Type, with a few tweaks.

2011-07-18 04:54:35 +00:00

Loads.cpp

Add some comments here because the lack of a check for volatile/atomic here is a bit unusual.

2011-08-15 21:56:39 +00:00

LoopDependenceAnalysis.cpp

Misc analysis passes that need to be aware of atomic load/store.

2011-08-15 20:54:19 +00:00

LoopInfo.cpp

Make a bunch of symbols private.

2011-08-19 01:42:18 +00:00

LoopPass.cpp

Reapplying r136844.

2011-08-10 23:22:57 +00:00

Makefile

…

MemDepPrinter.cpp

Misc analysis passes that need to be aware of atomic load/store.

2011-08-15 20:54:19 +00:00

MemoryBuiltins.cpp

land David Blaikie's patch to de-constify Type, with a few tweaks.

2011-07-18 04:54:35 +00:00

MemoryDependenceAnalysis.cpp

Misc analysis passes that need to be aware of atomic load/store.

2011-08-15 20:54:19 +00:00

ModuleDebugInfoPrinter.cpp

…

NoAliasAnalysis.cpp

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PathNumbering.cpp

Add this back in for now. There are still a few passes which create unwind instructions at the moment.

2011-08-03 01:07:57 +00:00

PathProfileInfo.cpp

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PathProfileVerifier.cpp

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PHITransAddr.cpp

Shorten some expressions by using ArrayRef::slice().

2011-07-25 15:13:01 +00:00

PostDominators.cpp

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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

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RegionPass.cpp

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RegionPrinter.cpp

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ScalarEvolution.cpp

Allow loop unrolling to get known trip counts from ScalarEvolution.

2011-08-11 23:36:16 +00:00

ScalarEvolutionAliasAnalysis.cpp

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ScalarEvolutionExpander.cpp

Use the getFirstInsertionPt() method instead of getFirstNonPHI + an 'isa<>'

2011-08-16 20:45:24 +00:00

ScalarEvolutionNormalization.cpp

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SparsePropagation.cpp

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Trace.cpp

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TypeBasedAliasAnalysis.cpp

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ValueTracking.cpp

Migrate LLVM and Clang to use the new makeArrayRef(...) functions where previously explicit non-default constructors were used.

2011-07-18 12:00:32 +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))

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