llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-28 06:32:09 +00:00

History

Devang Patel e9e16c5f52 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.

Use 8 bits from line number field to keep track of argument ordering while encoding debug info for an argument. That leaves 24 bit for line no, DebugLoc also allocates 24 bit for line numbers. If a function has more than 255 arguments then rest of the arguments will be ordered by llvm.dbg.* intrinsics' ordering in IR.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126793 91177308-0d34-0410-b5e6-96231b3b80d8

2011-03-01 22:58:13 +00:00

IPA

Use the new addEscapingValue callback to update GlobalsModRef when GVN adds PHIs of GEPs. For the moment,

2011-01-03 23:51:43 +00:00

AliasAnalysis.cpp

Stub out a new updating interface to AliasAnalysis, allowing stateful analyses to be informed when

2011-01-03 21:38:41 +00:00

AliasAnalysisCounter.cpp

Teach AliasAnalysisCounter about PartialAlias.

2010-12-10 19:53:05 +00:00

AliasAnalysisEvaluator.cpp

Teach AliasAnalysisEvaluator about PartialAlias.

2010-12-10 19:52:40 +00:00

AliasDebugger.cpp

Extend the AliasAnalysis::pointsToConstantMemory interface to allow it

2010-11-08 16:45:26 +00:00

AliasSetTracker.cpp

Update this code to handle PartialAlias as MayAlias.

2010-12-10 19:40:47 +00:00

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

VAArg doesn't capture its operand.

2010-11-09 20:09:35 +00:00

CFGPrinter.cpp

Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which

2010-10-19 17:21:58 +00:00

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

Move DbgInfoPrinter specific utlities inside DbgInfoPrinter.cpp

2011-02-15 17:36:11 +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

Move DominanceFrontier from VMCore to Analysis.

2011-01-18 06:06:27 +00:00

DomPrinter.cpp

split dom frontier handling stuff out to its own DominanceFrontier header,

2011-01-02 22:09:33 +00:00

InlineCost.cpp

Remove premature optimization that avoided calculating argument weights

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

InstCount.cpp

Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which

2010-10-19 17:21:58 +00:00

InstructionSimplify.cpp

Optimize "icmp pred (urem X, Y), Y" --> true/false depending on pred. There's

2011-03-01 08:15:50 +00:00

Interval.cpp

…

IntervalPartition.cpp

…

IVUsers.cpp

split dom frontier handling stuff out to its own DominanceFrontier header,

2011-01-02 22:09:33 +00:00

LazyValueInfo.cpp

Teach LazyValueInfo that allocas aren't NULL. Over all of llvm-test, this saves

2011-01-15 09:16:12 +00:00

LibCallAliasAnalysis.cpp

…

LibCallSemantics.cpp

…

Lint.cpp

Give GetUnderlyingObject a TargetData, to keep it in sync

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

Loads.cpp

Move Value::getUnderlyingObject to be a standalone

2010-12-15 20:02:24 +00:00

LoopDependenceAnalysis.cpp

split dom frontier handling stuff out to its own DominanceFrontier header,

2011-01-02 22:09:33 +00:00

LoopInfo.cpp

Fix typo pointed out by Trevor Harmon.

2010-11-13 12:16:27 +00:00

LoopPass.cpp

…

Makefile

…

MemDepPrinter.cpp

Add helper functions for computing the Location of load, store,

2010-11-11 21:50:19 +00:00

MemoryBuiltins.cpp

…

MemoryDependenceAnalysis.cpp

Give GetUnderlyingObject a TargetData, to keep it in sync

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

ModuleDebugInfoPrinter.cpp

Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which

2010-10-19 17:21:58 +00:00

NoAliasAnalysis.cpp

Use the new addEscapingValue callback to update GlobalsModRef when GVN adds PHIs of GEPs. For the moment,

2011-01-03 23:51:43 +00:00

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

split dom frontier handling stuff out to its own DominanceFrontier header,

2011-01-02 22:09:33 +00:00

PostDominators.cpp

split dom frontier handling stuff out to its own DominanceFrontier header,

2011-01-02 22:09:33 +00:00

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

…

ProfileInfoLoaderPass.cpp

Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which

2010-10-19 17:21:58 +00:00

ProfileVerifierPass.cpp

Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which

2010-10-19 17:21:58 +00:00

README.txt

…

RegionInfo.cpp

Add single entry / single exit accessors.

2011-01-13 23:18:04 +00:00

RegionPass.cpp

Remove useless dynamic_cast<>().

2010-12-12 21:58:28 +00:00

RegionPrinter.cpp

RegionPrinter: Ignore back edges when layouting the graph

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

ScalarEvolution.cpp

teach SCEV that the scale and addition of an inbounds gep don't NSW.

2011-02-13 03:14:49 +00:00

ScalarEvolutionAliasAnalysis.cpp

Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which

2010-10-19 17:21:58 +00:00

ScalarEvolutionExpander.cpp

Introduce memoization for ScalarEvolution dominates and properlyDominates

2010-11-18 00:34:22 +00:00

ScalarEvolutionNormalization.cpp

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SparsePropagation.cpp

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Trace.cpp

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TypeBasedAliasAnalysis.cpp

Update a comment.

2010-12-16 02:55:10 +00:00

ValueTracking.cpp

Fix comment.

2011-02-28 09:18:11 +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))

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