__builtin___CFStringMakeConstantString
This fixes PR8993. A darwin expert might want to check that this is safe.

llvm-svn: 123658

process, perform a number of refactorings:

- Move MiscNameMangler member functions to MangleContext
- Remove GlobalDecl dependency from MangleContext
- Make MangleContext abstract and move Itanium/Microsoft functionality
  to their own classes/files
- Implement ASTContext::createMangleContext and have CodeGen use it

No (intended) functionality change.

llvm-svn: 123386

think it is safe to mark all type infos with unnamed_addr, but I am not sure.

llvm-svn: 123275

llvm-svn: 123197

static const char foo[] = "foo";
static const char *bar = "bar";

the global created to hold "bar" will have it, but foo will not.

llvm-svn: 123192

llvm-svn: 122634

within the class.  Teach IR gen to look for function definitions in record
lexical contexts when deciding whether to emit a function whose address    
was taken.  Fixes PR8789.

llvm-svn: 121833

rdar://8560647

llvm-svn: 120650

data members by delaying the emission of the initializer until after
linkage and visibility have been set on the global.  Also, don't
emit a guard unless the variable actually ends up with vague linkage,
and don't use thread-safe statics in any case.

llvm-svn: 118336

visibility of their function.

llvm-svn: 118065

independently of whether they're definitions, then teach IR generation to
ignore non-explicit visibility when emitting declarations.  Use this to
make sure that RTTI, vtables, and VTTs get the right visibility.

More of rdar://problem/8613093

llvm-svn: 117781

for namespace-scope variable declarations.

Apply visibility in IR gen to variables that are merely declared
and never defined.  We were previously emitting these with default
visibility unless they were declared with private_extern.

Ignore global visibility settings when computing visibility for
a declaration's context, and key several conditions on whether a
visibility attribute exists anywhere in the hierarchy as opposed
to whether it exists at the current level.

llvm-svn: 117729

declared", it breaks things.

llvm-svn: 117653

and never defined.  We were previously emitting these with default
visibility unless they were declared with private_extern.

Ignore global visibility settings when computing visibility for
a declaration's context, and key several conditions on whether a
visibility attribute exists anywhere in the hierarchy as opposed
to whether it exists at the current level.

llvm-svn: 117644

on if its linkage is weak. Currently this is the
case but may change in the future. (part of radar 
8562966).

llvm-svn: 117452

more closely parallel the computation of linkage.  This gets us to a state
much closer to what gcc emits, modulo bugs, which will undoubtedly arise in
abundance.

llvm-svn: 117147

PR6056, //rdar: //8564463

llvm-svn: 116819

llvm-svn: 116613

llvm-svn: 116595

This enables metadata generation by default, however the TBAA pass
in the optimizer is still disabled for now.

llvm-svn: 116536

It enables clang to compile Mingw's headers.

llvm-svn: 116184

 - Minor style tweaks by me.

llvm-svn: 115056

already be determined by isCopyAssignmentOperator(), and was set too
late in the process for all clients to see the appropriate
value. Cleanup only; no functionality change.

llvm-svn: 114916

translation units that don't catch ObjC types.  rdar://problem/8434851

llvm-svn: 114070

llvm-svn: 113256

instead of asserting in IRGen. Fixes radar 8390459.

llvm-svn: 113253

under the ARM ABI.

llvm-svn: 112588

This lets us remove Sema.h's dependency on Expr.h and Decl.h.

llvm-svn: 112156

objc-nonfragile-abi2 (radar 7824380).

llvm-svn: 111823

Make CGT defer to the ABI on all member pointer types.
This requires giving CGT a handle to the ABI.
It's way easier to make that work if we avoid lazily creating the ABI.
Make it so.

llvm-svn: 111786

it deserves its own enumerator.  Obviously the implementations should
closely follow the Itanium ABI except in cases of divergence.

llvm-svn: 111749

active C++ ABI as a raw string, we store it as an enum. This should improve
performance somewhat.

And yes, this time, I started from a clean build directory, and
all the tests passed. :)

llvm-svn: 111507

Now all classes derived from Attr are generated from TableGen.
Additionally, Attr* is no longer its own linked list; SmallVectors or
Attr* are used. The accompanying LLVM commit contains the updates to
TableGen necessary for this.

Some other notes about newly-generated attribute classes:

 - The constructor arguments are a SourceLocation and a Context&,
   followed by the attributes arguments in the order that they were
   defined in Attr.td

 - Every argument in Attr.td has an appropriate accessor named getFoo,
   and there are sometimes a few extra ones (such as to get the length
   of a variadic argument).

Additionally, specific_attr_iterator has been introduced, which will
iterate over an AttrVec, but only over attributes of a certain type. It
can be accessed through either Decl::specific_attr_begin/end or
the global functions of the same name.

llvm-svn: 111455

and remove getStrData().  Patch by Peter Davies (with some tweaks).

llvm-svn: 111229

a -cc1 option.  The Darwin linker complains about mixed visibility when linking
gcc-built objects with clang-built objects, and the optimization isn't really
that valuable.  Platforms with less ornery linkers can feel free to enable this.

llvm-svn: 110979

llvm-svn: 110530

do the right thing with mixed-visibility symbols, so disable the visibility
optimization where that's possible, i.e. with template classes (since it's
possible that an arbitrary template might be subject to an explicit
instantiation elsewhere).  447.dealII actually does this.

I've put the code under an option that's currently not hooked up to anything.

llvm-svn: 110374

llvm-svn: 110315

Apply hidden visibility to most RTTI;  libstdc++ does not rely on exact
pointer equality for the type info (just the type info names).  Apply
the same optimization to RTTI that we do to vtables.

Fixes PR5962.

llvm-svn: 110192

llvm-svn: 109797