LLVM_ENABLE_ASSERTIONS instead of LIBCXX_ENABLE_ASSERTIONS when
figuring out what _DEBUG/NDEBUG defines to set. It also tries to test
the non-existent variable 'uppercase_CMAKE_BUILD_TYPE', which the top
level LLVM CMakeLists.txt sets up, but which the top level libc++
CMakeLists.txt currently does not. Changing the variable name tested
and creating the uppercase release name variable allows libc++ to
honor the LIBCXX_ENABLE_ASSERTIONS option correctly.

llvm-svn: 161308

llvm-svn: 161307

llvm-svn: 161306

Use a COPY node instead of an explicit MOVA opcode in the custom insterter for pcmpestrm/pcmpistrm. Allows the register allocator to handle it better and prevent wasted identity moves.

llvm-svn: 161305

llvm-svn: 161303

On PPC64, this can be done with a simple TableGen pattern.
To enable this, I've added the (otherwise missing) readcyclecounter
SDNode definition to TargetSelectionDAG.td.

llvm-svn: 161302

llvm-svn: 161301

(this corresponds by spilling/reloading regs in DTriple / DQuad reg classes).
No testcase, found by inspection.

llvm-svn: 161300

were missed for no reason. This fixes PR13377

llvm-svn: 161299

llvm-svn: 161298

llvm-svn: 161297

Postpone the deletion of the old name in StructType::setName to allow using a slice of the old name.

Fixes PR13522. Add a rudimentary unit test to exercise the behavior.

llvm-svn: 161296

[CMake] add_lit_target: Remove comments about add_dependencies. It is not a bug in cmake that add_custom_target(DEPENDS) would not accept targets but file-level dependencies.

llvm-svn: 161295

We can be in the situation where we did not track the symbol before
realloc was called on it.

llvm-svn: 161294

Pull in cxa_demangle.cpp/.h from llvm's libcxxabi project.  Change the namespace to lldb_cxxabiv1 for the time being.
Mangled.cpp is not wired in to call it yet.

llvm-svn: 161293

FIXME: Fix several tests on i686-win32 due to lacking of many libraries.
llvm-svn: 161292

resulting in issuance of unused static variable
warning now. // rdar://10777111

llvm-svn: 161291

This should fix the failing test on the buildbot as well.

llvm-svn: 161290

llvm-svn: 161289

While there is no such thing as a "null reference" in the C++ standard,
many implementations of references (including Clang's) do not actually
check that the location bound to them is non-null. Thus unlike a regular
null dereference, this will not cause a problem at runtime until the
reference is actually used. In order to catch these cases, we need to not
prune out paths on which the input pointer is null.

llvm-svn: 161288

llvm-svn: 161287

llvm-svn: 161286

TwoAddressInstructionPass doesn't remat any more.

llvm-svn: 161285

llvm-svn: 161284

Like base constructors, delegating constructors require no further
processing in the CFGInitializer node.

Also, add PrettyStackTraceLoc to the initializer and destructor logic
so we can get better stack traces in the future.

llvm-svn: 161283

This patch is mostly just refactoring a bunch of copy-and-pasted code, but
it also adds a check that the call instructions are readnone or readonly.
That check was already present for sin, cos, sqrt, log2, and exp2 calls, but
it was missing for the rest of the builtins being handled in this code.

llvm-svn: 161282

No functional change intended, except replacing a DenseMap with a
SmallDenseMap which should behave identically.

llvm-svn: 161281

Because of this, we would previously emit NO path notes when a parameter
is constrained to null (because there are no stores). Now we show where we
made the assumption, which is much more useful.

llvm-svn: 161280

llvm-svn: 161279

llvm-svn: 161278

llvm-svn: 161277

The visitor walks back through the ExplodedGraph as expected, but
it wasn't actually keeping track of when a value was assigned. This
meant that it only worked when the value was assigned when the variable
was defined.

Tests in the next commit (dependent on another change).

llvm-svn: 161276

This only applies in the case where ->* is not overloaded, since it
specifically looks for BinaryOperator and not CXXOperatorCallExpr.

llvm-svn: 161275

llvm-svn: 161274

This is far from complete, and only changes behavior when the
-early-live-intervals flag is passed to llc.

llvm-svn: 161273

Change these to patterns.
2. Add another 16 instructions.

Patch by Reed Kotler.

llvm-svn: 161272

<rdar://problem/12027563> Making sure that some class of stop-hook commands that involve po'ing objects do not cause an endless recursion

llvm-svn: 161271

This option runs LiveIntervals before TwoAddressInstructionPass which
will eventually learn to exploit and update the analysis.

Eventually, LiveIntervals will run before PHIElimination, and we can get
rid of LiveVariables.

llvm-svn: 161270

Previously, the identity copy would survive through register allocation
before it was removed by the rewriter.

llvm-svn: 161269

substitution forward references.  That is, sometimes a mangled name refers to
a substitution that hasn't yet been defined.  The demangler was derferencing a
null pointer in this case because it wasn't properly guarded against a
forward reference.  Test case added to catch this problem.

llvm-svn: 161267