Don't produce a vtable for a class if we have an explicit template instantiation declaration and no key function. We will produce the vtable at the explicit template instantiation.

Fixes PR6748

llvm-svn: 100266

llvm-svn: 100237

IRgen/Obj-C: Eliminate FindIvarInterface, now that ivar's are in the right DeclContexts (-2 FIXMEs). We still have an annoying linear scan + hidden dependency on how Obj-C layout is done.
 - This is also an algorithmic improvement in IRgen for Obj-C, although it probably doesn't matter in practice.

llvm-svn: 100228

llvm-svn: 100219

llvm-svn: 100200

poor (and wrong) approximation of the actual rules governing when to
build a copy and when it can be elided.

The correct implementation is actually simpler than the
approximation. When we only enumerate constructors as part of
initialization (e.g., for direct initialization or when we're copying
from a class type or one of its derived classes), we don't create a
copy. When we enumerate all conversion functions, we do create a
copy. Before, we created some extra copies and missed some
others. The new test copy-initialization.cpp shows a case where we
missed creating a (required, non-elidable) copy as part of a
user-defined conversion, which resulted in a miscompile. This commit
also fixes PR6757, where the missing copy made us reject well-formed
code in the ternary operator.

This commit also cleans up our handling of copy elision in the case
where we create an extra copy of a temporary object, which became
necessary now that we produce the right copies. The code that seeks to
find the temporary object being copied has moved into
Expr::getTemporaryObject(); it used to have two different
not-quite-the-same implementations, one in Sema and one in CodeGen.

Note that we still do not attempt to perform the named return value
optimization, so we miss copy elisions for return values and throw
expressions.

llvm-svn: 100196

Reapply patch for adding support for address spaces and added a isVolatile field to memcpy, memmove, and memset. 

llvm-svn: 100193

CG/NeXT: Assert some invariants on an ivar's containing decl context that I am about to refactor based on, following some testing.

llvm-svn: 100188

llvm-svn: 100093

this was parsed as a typename-specifier, elaborated-type-specifier
(including the kind), or just a dependent qualified type name.

llvm-svn: 100039

refactoring work in this area.

llvm-svn: 100019

llvm-svn: 100007

addition to the inherent win, this eliminates the pointless
cost of going through the name -> mdkind stringmap that we
were paying.

llvm-svn: 99983

IRGen: Move the auxiliary data structures tracking AST -> LLVM mappings out of CodeGenTypes, to per-record CGRecordLayout structures.
 - I did a cursory check that this was perf neutral, FWIW.

llvm-svn: 99978

CGRecordLayoutBuilder: Switch unions to use same mechanism for tracking field and bit-field info as structs.
 - Anders, please check.

llvm-svn: 99977

the existing (and already well-tested) linkage computation for types,
with minor tweaks for dynamic classes and (pointers to) incomplete
types. Fixes PR6597.

llvm-svn: 99968

llvm-svn: 99967

null checks, and make sure we elide null checks when accessing base class
members.

llvm-svn: 99963

llvm-svn: 99949

llvm-svn: 99946

llvm-svn: 99945

llvm-svn: 99944

Fixes PR3782.

llvm-svn: 99940

llvm-svn: 99930

This introduces FunctionType::ExtInfo to hold the calling convention and the
noreturn attribute. The next patch will extend it to include the regparm
attribute and fix the bug.

llvm-svn: 99920

class has no key function.

Fix PR6738.

llvm-svn: 99900

llvm-svn: 99884

llvm-svn: 99869

llvm-svn: 99868

Use the new function in EmitClassAggrMemberwiseCopy, fixing the same assert as seen in PR6628 but for arrays this time.

llvm-svn: 99867

llvm-svn: 99866

llvm-svn: 99865

Handle default arguments when calling copy constructors for bases or members when synthesizing a copy constructor. Fixes PR6628.

llvm-svn: 99864

Flip the switch and use the new vtable layout code for everything. I've verified that this passes a self-host but I'll let the bots self host as well before removing the now dead code.

llvm-svn: 99861

This reduces '-c -g' time on one file in 403.gcc by 12%.

llvm-svn: 99857

llvm-svn: 99828

on one .i file from 403.gcc by 0.5%.

llvm-svn: 99823

Anton Yartsev!

llvm-svn: 99817

llvm-svn: 99812

llvm-svn: 99807