infrastructure to construct function type.
 - For consistencty, we should probably always use this to construct
   function types, but these are absolutely necessary to ensure that
   we can emit calls to these functions.

llvm-svn: 63695

llvm-svn: 63694

a.k.a. Koenig lookup) in C++. Most of the pieces are in place, but for
two:

  - In an unqualified call g(x), even if the name does not refer to
    anything in the current scope, we can still find functions named
    "g" based on ADL. We don't yet have this ability.
  - ADL will need updating for friend functions and templates.

llvm-svn: 63692

llvm-svn: 63691

llvm-svn: 63688

Patch by David Chisnall

llvm-svn: 63686

llvm-svn: 63685

abi messaging.

llvm-svn: 63684

llvm-svn: 63683

llvm-svn: 63681

llvm-svn: 63679

llvm-svn: 63678

out of FileInfo :)

llvm-svn: 63672

types.

llvm-svn: 63669

llvm-svn: 63668

llvm-svn: 63667

Patch by David Chisnall.

llvm-svn: 63666

llvm-svn: 63665

llvm-svn: 63662

David Chisnall.

llvm-svn: 63661

llvm-svn: 63657

Pointers to functions don't work yet, and pointers to overloaded functions even less. Also, far too much illegal code is accepted.

llvm-svn: 63655

 - Now only 27/500 failures on ABITest single argument tests; from
   350/500. :)
 - As with return types, a large percentage of these are likely to be
   gcc bugs, not yet reviewed.

Also, fix bug in handling of Ignore ABI type in argument lists.

llvm-svn: 63654

llvm-svn: 63648

scopes where the name would be considered a redeclaration if we know
that we're declaring or defining that tag.

llvm-svn: 63647

using directives, from Piotr Rak!

llvm-svn: 63646

return types).

llvm-svn: 63645

llvm-svn: 63644

Specify external linkage for such globals so that llvm optimizer do
not assume there values initialized as zero.

llvm-svn: 63636

llvm-svn: 63635

llvm-svn: 63634

are 8-byte aligned.

llvm-svn: 63630

ContentCache objects to using a densemap and list, and allocating
the ContentCache objects from a bump pointer.  This does not speed
up or slow down things substantially, but gives us control over 
their alignment.

llvm-svn: 63628

llvm-svn: 63627

llvm-svn: 63626

llvm-svn: 63625

llvm-svn: 63624

(the main point of this restructing).

llvm-svn: 63619

acceptable kind with more precise semantics.

llvm-svn: 63617

native IRgen type is. This is like Default, but without any extra
semantics (like automatic tweaking of structures or void).

llvm-svn: 63615