APValue::Array and APValue::MemberPointer. All APValue values can now be emitted
as constants.

Add new CGCXXABI entry point for emitting an APValue MemberPointer. The other
entrypoints dealing with constant member pointers are no longer necessary and
will be removed in a later change.

Switch codegen from using EvaluateAsRValue/EvaluateAsLValue to
VarDecl::evaluateValue. This performs caching and deals with the nasty cases in
C++11 where a non-const object's initializer can refer indirectly to
previously-initialized fields within the same object.

Building the intermediate APValue object incurs a measurable performance hit on
pathological testcases with huge initializer lists, so we continue to build IR
directly from the Expr nodes for array and record types outside of C++11.

llvm-svn: 148178

A base subobject type doesn't make sense for unions; don't try to compute it.  Based on patch by Yin Ma.  Fixes PR11751.

llvm-svn: 148093

llvm-svn: 147989

llvm-svn: 147988

argument when Offset is initialized.

llvm-svn: 147986

Remove function MipsABIInfo::GetFloatingPointTy.

llvm-svn: 147985

llvm-svn: 147933

floating point type.

llvm-svn: 147894

passed in floating point registers.

llvm-svn: 147892

llvm-svn: 147889

for the arm-linux-androideabi triple in particular.

Also use this to do a better job of selecting soft FP settings.

Patch by Evgeniy Stepanov.

llvm-svn: 147872

passing on i386 and does not use registers.

llvm-svn: 147856

CFStrings writable.

The strings (both Unicode and ASCII) should reside in a read-only section. E.g.,
__TEXT,__cstring instead of __DATA,__data. This is done by making the global
variable created for the strings constant despite the value of that flag.
<rdar://problem/10657500>

llvm-svn: 147845

Implement the missing pieces of Evaluate for _Complex types.  With that complete, remove some code from CGExprConstant which is no longer necessary.  While I'm here, a couple minor tweaks to _Complex-in-C++. (Specifically, make _Complex types literal types, and don't warn for _Complex int.)

llvm-svn: 147840

c++ objects with non-trivial assignment/copy functions.
Also, one additional sema check. // rdar://6137845

llvm-svn: 147817

llvm-svn: 147791

padding insertion will not work if the coerced type is not a structure.

llvm-svn: 147786

c++ object properties. wip.

llvm-svn: 147750

with non-trivial copies. // rdar://6137845

llvm-svn: 147735

llvm-svn: 147730

is inserted before the real argument. Padding is needed to ensure the backend
reads from or writes to the correct argument slots when the original alignment
of a byval structure is unavailable due to flattening.

llvm-svn: 147699

currently turned off. // rdar://6137845
Also, fixes a test case which should be nonatomic under
new API.

llvm-svn: 147691

llvm-svn: 147681

llvm-svn: 147677

properties of c++ object types with non-trivial
assignment copy. Not used yet. // rdar://6137845

llvm-svn: 147666

llvm-svn: 147664

builtins.

This fixes PR11711.

llvm-svn: 147655

for copying atomic properties of c++ objects
with non-trivial copy assignment in setters/getters.
Not yet used. // rdar://6137845

llvm-svn: 147636

llvm-svn: 147631

c++ object reference type with trivial copy constructor.
This causes an assert crash and bad code gen. when assert 
is off. // rdar://6137845

llvm-svn: 147573

Add an APValue representation for the difference between two address-of-label expressions.  Add support to Evaluate and CGExprConstant for generating/handling them.  Remove the special-case for such differences in Expr::isConstantInitializer.

With that done, remove a bunch of buggy code from CGExprConstant for handling scalar expressions which is no longer necessary.

Fixes PR11705.

llvm-svn: 147561

information even in subscripting operations.

llvm-svn: 147557

llvm-svn: 147530

is either N32 or N64. 

llvm-svn: 147520

llvm-svn: 147511

Initialise constant Objective-C string isa pointers with a weak reference to the class, so that they are usable in +load methods if the string class has been compiled with clang - if it's been compiled with GCC, the ABI makes this impossible.  (GNU runtimes)

llvm-svn: 147493

ObjCProtocolDecl modules forward declarations properly.

llvm-svn: 147415

for Objective-C protocols, including:
  - Using the first declaration as the canonical declaration
  - Using the definition as the primary DeclContext
  - Making sure that all declarations have a pointer to the definition
  data, and that we know which declaration is the definition
  - Serialization support for redeclaration chains and for adding
  definitions to already-serialized declarations.

However, note that we're not taking advantage of much of this code
yet, because we're still re-using ObjCProtocolDecls.

llvm-svn: 147410

Also temporarily remove the assumption from IR gen that we can emit IR for every
constant we can fold, since it isn't currently true in C++11, to fix PR11676.

Original comment from r147271:

constexpr: perform zero-initialization prior to / instead of performing a
constructor call when appropriate. Thanks to Eli for spotting this.

llvm-svn: 147384

clients. No functionality change.

llvm-svn: 147318