llvm-svn: 131372

that the destructor body is trivial and that all member variables also have either
trivial destructors or trivial destructor bodies, we don't need to initialize the
vtable pointers since no virtual member functions will be called on the destructor.

Fixes PR9181.

llvm-svn: 131368

send if the receiver is null.  Normally it's not worthwhile to check this,
but avoiding the null-initialization is nice, and this also avoids nasty
problems where the null-initialization is visible within the call because
we use an aliased result buffer.  rdar://problem/9402992

llvm-svn: 131366

out as "v-table" message sends and stop calling normal messages "legacy"
message sends.

Also, fix some comments to reveal the true state of affairs.

llvm-svn: 131335

and to decrease the amount of effort in appending strings.

llvm-svn: 131323

llvm-svn: 131321

mangled to avoid doing it twice for platforms that use prefixes like
Darwin.

llvm-svn: 131311

llvm-svn: 131300

-fno-constant-cfstrings. Patch by Jonathan Schleifer.

llvm-svn: 131298

constant, also consider whether it's a class type that has any mutable
fields. If so, it can't be a global constant.

llvm-svn: 131276

s/DW_AT_APPLE_objc_class_extension/DW_AT_APPLE_objc_complete_type/g

llvm-svn: 131245

llvm-svn: 131242

Use DW_AT_APPLE_objc_class_extension attribute to identify interfaces that represent class extension.
Radar 9423077.

llvm-svn: 131239

     (__m128){ p[0], p[1], p[2], p[3] }

which produces really bad code. This could be done in instcombine, but it's
probably better to do it in the front-end instead.
<rdar://problem/9424836>

llvm-svn: 131237

llvm-svn: 131215

modify the semantics slightly to accomodate default constructors (I
hope).

llvm-svn: 131087

llvm-svn: 131075

complete destructors for abstract classes unless the destructor is virtual
and thus needs to be in the vtable.

llvm-svn: 131068

type, so long as it is known to have a constant initializer and the
class type is a POD class. Fixes <rdar://problem/9306265>.

llvm-svn: 131060

llvm-svn: 131057

llvm-svn: 131019

 - New isDefined() function checks for deletedness
 - isThisDeclarationADefinition checks for deletedness
 - New doesThisDeclarationHaveABody() does what
   isThisDeclarationADefinition() used to do
 - The IsDeleted bit is not propagated across redeclarations
 - isDeleted() now checks the canoncial declaration
 - New isDeletedAsWritten() does what it says on the tin.
 - isUserProvided() now correct (thanks Richard!)

This fixes the bug that we weren't catching

void foo() = delete;
void foo() {}

as being a redefinition.

llvm-svn: 131013

Don't emit nsw flags for vector operations; there's basically no benefit, and a lot of downside (like PR9850, which is about clang's xmmintrin.h making an unexpected transformation on an expression involving _mm_add_epi32).

llvm-svn: 131000

Add an implementation of thunks for varargs methods.  The implementation is a bit messy, but it is correct as long as the method in question doesn't use indirect gotos.  A couple of possible alternative implementations are outlined in FIXME's in this patch. rdar://problem/8077308 .

llvm-svn: 130993

This enables incremental codegen, where the initializer array can be removed from the module, such that only new initializers will be emitted and run.

llvm-svn: 130986

// rdar://9362887

llvm-svn: 130956

llvm-svn: 130953

llvm-svn: 130929

foo.pic.gcno instead of foo.gcno.

llvm-svn: 130899

Ivar offsets for synthesized ivars are wrong, which could end up with a large
number of dirty pages because of ivar fixups at runtime. When we pack all of the
synthesized ivars into the same section, it limits the number of dirty pages
created. Place them in the "__DATA,__objc_ivar" section.
<rdar://problem/9374905>

llvm-svn: 130870

llvm-svn: 130866

llvm-svn: 130864

llvm-svn: 130830

the body of a delegating constructor call.

This means that the delegating constructor implementation should be
complete and correct, though there are some rough edges (diagnostic
quality with the cycle detection and using a deleted destructor).

llvm-svn: 130803

structs. // rdar://8823265

llvm-svn: 130783

Material bugfixes to come this afternoon.

llvm-svn: 130782

llvm-svn: 130736

Do not try to get mangled name of block helpers. Apply a stopgap measure to fix SingleSource/UnitTests/block-copied-in-cxxobj compile time crash.

llvm-svn: 130734

llvm-svn: 130719

Skip extra copy from aggregate where it isn't necessary; rdar://problem/8139919 .  This shouldn't make much of a difference at -O3, but should substantially reduce the number of generated memcpy's at -O0.

llvm-svn: 130717