Add an explicit diagnostic for the case where an expression is not a constant
expression because it uses 'this'. Inspired by PR20219 comment#2.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212433 91177308-0d34-0410-b5e6-96231b3b80d8
Fix layering of file remapping and header search initialization

These two functions initialize the source manager and header search objects and
shouldn't be in InitPreprocessor which is concerned with priming the
preprocessor itself and predefining macros.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212434 91177308-0d34-0410-b5e6-96231b3b80d8
CodeGen: Refactor RTTI emission

Let's not expose ABI specific minutia inside of CodeGenModule and Type.
Instead, let's abstract it through CXXABI.

This gets rid of:
CodeGenModule::getCompleteObjectLocator,
CodeGenModule::EmitFundamentalTypeDescriptor{s,},
CodeGenModule::getMSTypeDescriptor,
CodeGenModule::getMSCompleteObjectLocator,
CGCXXABI::shouldRTTIBeUnique,
CGCXXABI::classifyRTTIUniqueness.

CGRTTI was *almost* entirely centered around providing Itanium-style
RTTI information.  Instead of providing interfaces that only it
consumes, move it to the ItaniumCXXABI implementation file.  This allows
it to have access to Itanium-specific implementation details without
providing useless expansion points for the Microsoft ABI side.

Differential Revision: http://reviews.llvm.org/D4261

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212435 91177308-0d34-0410-b5e6-96231b3b80d8
StaticAnalyzer: Silence a warning

ExprEngine wasn't ready for SEHLeaveStmtClass.  Handle it like all the
other SEH constructs by aborting.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212436 91177308-0d34-0410-b5e6-96231b3b80d8
Fix an iterator invalidation issue: deserializing a key function can write to
the key functions table. Don't hold references to anything within that table
across such an access.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212437 91177308-0d34-0410-b5e6-96231b3b80d8