llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-28 21:34:23 +00:00

History

Nick Lewycky fa151a79ed The logic inside getMulExpr to simplify {a,+,b}*{c,+,d} was wrong, which was

visible given a=b=c=d=1, on iteration #1 (the second iteration). Replace it with
correct math. Fixes PR10383!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139133 91177308-0d34-0410-b5e6-96231b3b80d8

2011-09-06 05:05:14 +00:00

IPA

Reapply r138695. Fix PassManager stack depths.

2011-08-29 17:07:00 +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

Use canonical forms for the branch probability zero heutistic.

2011-09-04 23:53:04 +00:00

CaptureTracking.cpp

Don't include Operator.h from InstrTypes.h.

2011-04-11 09:35:34 +00:00

CFGPrinter.cpp

…

CMakeLists.txt

Rewrite the CMake build to use explicit dependencies between libraries,

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

ConstantFolding.cpp

Fixes following the CR by Chris and Duncan:

2011-08-29 19:58:36 +00:00

DbgInfoPrinter.cpp

…

DebugInfo.cpp

After r138010, subroutine type does not have context info. Update type verifier accordingly.

2011-08-31 18:04:31 +00:00

DIBuilder.cpp

Whitespace and 80-col.

2011-08-26 21:02:40 +00:00

DominanceFrontier.cpp

…

DomPrinter.cpp

…

InlineCost.cpp

Change condition for determining whether a function is small for inlining metrics so that very long functions

2011-05-24 20:22:24 +00:00

InstCount.cpp

…

InstructionSimplify.cpp

InstSimplify: Don't try to replace an extractvalue/insertvalue pair with the original value if types don't match.

2011-09-05 18:16:19 +00:00

Interval.cpp

…

IntervalPartition.cpp

…

IVUsers.cpp

Teach IVUsers to stop at non-affine expressions unless they are both

2011-07-01 22:05:19 +00:00

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

…

LibCallSemantics.cpp

…

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

LoopInfo::updateUnloop fix, and verify Block->Loop maps.

2011-08-26 03:06:34 +00:00

LoopPass.cpp

Reapply r138695. Fix PassManager stack depths.

2011-08-29 17:07:00 +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

…

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

…

PathProfileVerifier.cpp

Fix a ton of comment typos found by codespell. Patch by

2011-04-15 05:18:47 +00:00

PHITransAddr.cpp

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

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

PostDominators.cpp

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

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

ProfileEstimatorPass.cpp

Fix a ton of comment typos found by codespell. Patch by

2011-04-15 05:18:47 +00:00

ProfileInfo.cpp

Fix a ton of comment typos found by codespell. Patch by

2011-04-15 05:18:47 +00:00

ProfileInfoLoader.cpp

Remove unused STL header includes.

2011-04-23 19:53:52 +00:00

ProfileInfoLoaderPass.cpp

…

ProfileVerifierPass.cpp

…

README.txt

…

RegionInfo.cpp

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

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

RegionPass.cpp

Reapply r138695. Fix PassManager stack depths.

2011-08-29 17:07:00 +00:00

RegionPrinter.cpp

…

ScalarEvolution.cpp

The logic inside getMulExpr to simplify {a,+,b}*{c,+,d} was wrong, which was

2011-09-06 05:05:14 +00:00

ScalarEvolutionAliasAnalysis.cpp

…

ScalarEvolutionExpander.cpp

Skip the landingpad instruction when determining the insertion point.

2011-08-24 21:06:46 +00:00

ScalarEvolutionNormalization.cpp

…

SparsePropagation.cpp

…

Trace.cpp

…

TypeBasedAliasAnalysis.cpp

Fix a ton of comment typos found by codespell. Patch by

2011-04-15 05:18:47 +00:00

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))

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