llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-10-01 13:17:01 +00:00

Files

Chris Lattner fe8c7c807c teach libanalysis to fold int and fp loads from almost arbitrary

non-type-safe constant initializers.  This sort of thing happens
quite a bit for 4-byte loads out of string constants, unions, 
bitfields, and an interesting endianness check from sqlite, which
is something like this:

const int sqlite3one = 1;
# define SQLITE_BIGENDIAN    (*(char *)(&sqlite3one)==0)
# define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1)
# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE)

all of these macros now constant fold away.

This implements PR3152 and is based on a patch started by Eli, but heavily
modified and extended.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84936 91177308-0d34-0410-b5e6-96231b3b80d8

2009-10-23 06:23:49 +00:00

IPA

Remove MallocInst from LLVM Instructions.

2009-10-17 01:18:07 +00:00

AliasAnalysis.cpp

Global Aliases are not identifiable objects.

2009-08-27 17:52:56 +00:00

AliasAnalysisCounter.cpp

Do not try to override non-virtual methods, especially

2009-09-06 20:02:00 +00:00

AliasAnalysisEvaluator.cpp

Fix a missing newline, now that Value's operator<< doesn't add one of its own.

2009-08-26 14:34:12 +00:00

AliasDebugger.cpp

Refactor my previous change to maintain the distinction between AliasAnalysis and BasicAliasAnalysis. This involves some wider changes because it

2009-02-05 23:36:27 +00:00

AliasSetTracker.cpp

eliminate the std::ostream form of WriteAsOperand and update clients.

2009-08-23 05:17:37 +00:00

Analysis.cpp

Tidy #includes.

2009-08-11 16:02:12 +00:00

BasicAliasAnalysis.cpp

inline isGEP away.

2009-10-17 23:48:54 +00:00

CaptureTracking.cpp

Push LLVMContexts through the IntegerType APIs.

2009-08-13 21:58:54 +00:00

CFGPrinter.cpp

make DOTGraphTraits public, patch by Tobias Grosser!

2009-10-18 04:09:11 +00:00

CMakeLists.txt

add function passes for printing various dominator datastructures

2009-10-18 04:10:40 +00:00

ConstantFolding.cpp

teach libanalysis to fold int and fp loads from almost arbitrary

2009-10-23 06:23:49 +00:00

DbgInfoPrinter.cpp

Remove std::string uses from DebugInfo interface.

2009-09-29 18:40:58 +00:00

DebugInfo.cpp

"there is not any instruction with attached debug info in this module" does not mean "there is no debug info in this module". :)

2009-10-13 17:35:35 +00:00

DomPrinter.cpp

fix the other issue with ID's, hopefully really fixing the linux build.

2009-10-18 04:58:34 +00:00

InlineCost.cpp

Remove MallocInst from LLVM Instructions.

2009-10-17 01:18:07 +00:00

InstCount.cpp

Remove MallocInst from LLVM Instructions.

2009-10-17 01:18:07 +00:00

Interval.cpp

Change Pass::print to take a raw ostream instead of std::ostream,

2009-08-23 06:03:38 +00:00

IntervalPartition.cpp

Change Pass::print to take a raw ostream instead of std::ostream,

2009-08-23 06:03:38 +00:00

IVUsers.cpp

Instead of testing whether an instruction dominates the loop preheader,

2009-09-27 15:30:00 +00:00

LibCallAliasAnalysis.cpp

LibCallAliasAnalysis doesn't use TargetData.

2009-07-31 20:56:29 +00:00

LibCallSemantics.cpp

Remove Value::getNameLen

2009-07-26 08:34:35 +00:00

LiveValues.cpp

Delete an obsolete sentance from a comment.

2009-05-31 16:18:57 +00:00

LoopDependenceAnalysis.cpp

remove a few dead insertion methods.

2009-08-24 02:39:26 +00:00

LoopInfo.cpp

Fix another place that calls Loop::contains a lot to construct a sorted

2009-10-20 20:41:13 +00:00

LoopPass.cpp

Fix this debug output to handle the case where the loop has been deleted.

2009-09-28 15:40:01 +00:00

Makefile

Removed trailing whitespace from Makefiles.

2009-01-09 16:44:42 +00:00

MallocHelper.cpp

Invert isSafeToGetMallocArraySize check because we return NULL when we don't know the size.

2009-10-16 18:08:17 +00:00

MemoryDependenceAnalysis.cpp

Memory dependence analysis was incorrectly stopping to scan for stores to a pointer at bitcast uses of a malloc call.

2009-10-13 01:42:53 +00:00

PointerTracking.cpp

Fix bug where array malloc with unexpected computation of the size argument resulted in MallocHelper

2009-10-15 20:14:52 +00:00

PostDominators.cpp

Change Pass::print to take a raw ostream instead of std::ostream,

2009-08-23 06:03:38 +00:00

ProfileEstimatorPass.cpp

Make ProfileEstimator even more robust on general CFGs.

2009-09-11 08:39:33 +00:00

ProfileInfo.cpp

Add the first functions for updating ProfileInfo.

2009-09-09 17:52:57 +00:00

ProfileInfoLoader.cpp

Reapplied r81355 with the problems fixed.

2009-09-16 11:35:50 +00:00

ProfileInfoLoaderPass.cpp

Reapplied r81355 with the problems fixed.

2009-09-16 11:35:50 +00:00

ProfileVerifierPass.cpp

Bugfix. Sorry.

2009-09-11 08:43:15 +00:00

README.txt

Create a README.txt for lib/Analysis, and add an entry.

2009-09-28 18:38:53 +00:00

ScalarEvolution.cpp

Revert r83606 and add comments explaining why it isn't safe.

2009-10-09 16:35:06 +00:00

ScalarEvolutionAliasAnalysis.cpp

Add some comments.

2009-08-29 23:36:57 +00:00

ScalarEvolutionExpander.cpp

Introduce and use convenience methods for getting pointer types

2009-10-06 15:40:36 +00:00

SparsePropagation.cpp

Add a comment explaining why you would ever want to do this.

2009-09-19 19:00:06 +00:00

Trace.cpp

eliminate the "Value" printing methods that print to a std::ostream.

2009-08-23 04:37:46 +00:00

ValueTracking.cpp

Remove MallocInst from LLVM Instructions.

2009-10-17 01:18:07 +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.

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