llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-09 22:24:37 +00:00

Files

Chandler Carruth ccbf1e36d3 Switch llvm.cttz and llvm.ctlz to accept a second i1 parameter which

indicates whether the intrinsic has a defined result for a first
argument equal to zero. This will eventually allow these intrinsics to
accurately model the semantics of GCC's __builtin_ctz and __builtin_clz
and the X86 instructions (prior to AVX) which implement them.

This patch merely sets the stage by extending the signature of these
intrinsics and establishing auto-upgrade logic so that the old spelling
still works both in IR and in bitcode. The upgrade logic preserves the
existing (inefficient) semantics. This patch should not change any
behavior. CodeGen isn't updated because it can use the existing
semantics regardless of the flag's value.

Note that this will be followed by API updates to Clang and DragonEgg.

Reviewed by Nick Lewycky!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146357 91177308-0d34-0410-b5e6-96231b3b80d8

2011-12-12 04:26:04 +00:00

IPA

build/CMake: Finish removal of add_llvm_library_dependencies.

2011-11-29 19:25:30 +00:00

AliasAnalysis.cpp

Enhance alias analysis for atomic instructions a bit. Upgrade a couple alias-analysis tests to the new atomic instructions.

2011-09-26 20:15:28 +00:00

AliasAnalysisCounter.cpp

Teach AliasAnalysisCounter about PartialAlias.

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

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

Refactor code to use new attribute getters on CallSite for NoCapture and ByVal.

2011-11-20 19:09:04 +00:00

BlockFrequencyInfo.cpp

Add pass printing support to BlockFrequencyInfo pass. The implementation

2011-10-19 10:12:41 +00:00

BranchProbabilityInfo.cpp

Remove all remaining uses of Value::getNameStr().

2011-11-15 16:27:03 +00:00

CaptureTracking.cpp

Fix crasher in GVN due to my recent capture tracking changes.

2011-11-21 19:42:56 +00:00

CFGPrinter.cpp

Remove all remaining uses of Value::getNameStr().

2011-11-15 16:27:03 +00:00

CMakeLists.txt

build/CMake: Finish removal of add_llvm_library_dependencies.

2011-11-29 19:25:30 +00:00

ConstantFolding.cpp

Switch llvm.cttz and llvm.ctlz to accept a second i1 parameter which

2011-12-12 04:26:04 +00:00

DbgInfoPrinter.cpp

Fix for DbgInfoPrinter.cpp:174:12: warning: ‘LineNo’ may be used uninitialized in this function.

2011-09-21 23:34:23 +00:00

DebugInfo.cpp

Update DebugInfoFinder to match recent debug info encoding changes.

2011-10-17 22:30:34 +00:00

DIBuilder.cpp

Fix typo in comment.

2011-11-09 22:45:04 +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

A FIXME about block addresses and indirectbr.

2011-10-20 04:05:33 +00:00

InstCount.cpp

…

InstructionSimplify.cpp

Add support for vectors of pointers.

2011-12-05 06:29:09 +00:00

Interval.cpp

…

IntervalPartition.cpp

…

IVUsers.cpp

Slightly more useful tracing.

2011-10-13 17:06:38 +00:00

LazyValueInfo.cpp

Clear the new cache.

2011-12-03 15:19:55 +00:00

LibCallAliasAnalysis.cpp

…

LibCallSemantics.cpp

…

Lint.cpp

Fix a few more places where TargetData/TargetLibraryInfo is not being passed.

2011-12-02 01:26:24 +00:00

LLVMBuild.txt

build: Add initial cut at LLVMBuild.txt files.

2011-11-03 18:53:17 +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

Remove the temporary flag -disable-unroll-scev and dead code.

2011-11-28 19:22:09 +00:00

LoopPass.cpp

Reapply r138695. Fix PassManager stack depths.

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

Makefile

…

MemDepPrinter.cpp

Enhance the memdep interface so that users can tell the difference between a dependency which cannot be calculated and a path reaching the entry point of the function. This patch introduces isNonFuncLocal, which replaces isUnknown in some cases.

2011-10-13 22:14:57 +00:00

MemoryBuiltins.cpp

Validate the return type when checking if a function is malloc.

2011-11-23 17:58:47 +00:00

MemoryDependenceAnalysis.cpp

Fix crasher in GVN due to my recent capture tracking changes.

2011-11-21 19:42:56 +00:00

ModuleDebugInfoPrinter.cpp

…

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

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

Implementation of path profiling.

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

PathProfileVerifier.cpp

Remove all remaining uses of Value::getNameStr().

2011-11-15 16:27:03 +00:00

PHITransAddr.cpp

Propagate TargetLibraryInfo throughout ConstantFolding.cpp and

2011-12-01 03:08:23 +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

Remove all remaining uses of Value::getNameStr().

2011-11-15 16:27:03 +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

Remove all remaining uses of Value::getNameStr().

2011-11-15 16:27:03 +00:00

ProfileVerifierPass.cpp

Move code into anonymous namespaces.

2011-11-26 23:01:57 +00:00

README.txt

…

RegionInfo.cpp

Missed some users of Value::getNameStr.

2011-11-15 18:30:06 +00:00

RegionPass.cpp

Reapply r138695. Fix PassManager stack depths.

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

RegionPrinter.cpp

RegionPrinter: Ignore back edges when layouting the graph

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

ScalarEvolution.cpp

Fix a few more places where TargetData/TargetLibraryInfo is not being passed.

2011-12-02 01:26:24 +00:00

ScalarEvolutionAliasAnalysis.cpp

…

ScalarEvolutionExpander.cpp

LSR: handle the expansion of phi operands that use postinc forms of the IV.

2011-11-30 06:07:54 +00:00

ScalarEvolutionNormalization.cpp

Fix memory corruption I introduced a few checkins ago.

2011-10-13 18:49:23 +00:00

SparsePropagation.cpp

Remove all remaining uses of Value::getNameStr().

2011-11-15 16:27:03 +00:00

Trace.cpp

Remove all remaining uses of Value::getNameStr().

2011-11-15 16:27:03 +00:00

TypeBasedAliasAnalysis.cpp

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

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

ValueTracking.cpp

Probably not a good idea to convert a single vector load into a memcpy. We

2011-12-06 00:19:08 +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))

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