MS ABI: Avoid hashing back reference keys in mangler

This patch replaces the back reference StringMap from the MS mangler
with a SmallVector of strings. My previous patches reduced the number of
hashes involved in back reference lookups, this one removes them
completely. The back reference map contains at most 10 entries, which
are likely to be of varying sizes and different initial subsequences,
and which can easily became huge (due to templates and namespaces).

The solution presented is the simplest possible one. Nevertheless, it's
enough to reduce compilation times for a particular test case from 11.1s
to 9s, versus 8.58s for the Itanium ABI. Possible further improvements
include using a sorted vector (carefully to not introduce an extra
comparison), storing the string contents in a common arena, and/or keep
the string storage in the context for reuse.

Patch by Agustín Bergé.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218461 91177308-0d34-0410-b5e6-96231b3b80d8
Move calls to ResolveExceptionSpec out of SetDeclDefaulted and into DefineImplicit*

This fixes an assertion failure in CodeGen where we were not resolving
an exception specification.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218466 91177308-0d34-0410-b5e6-96231b3b80d8
Suggest fix-it for missing '{' after base-clause


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218468 91177308-0d34-0410-b5e6-96231b3b80d8
Fix PR20886 - enforce CUDA target match in method calls

http://reviews.llvm.org/D5298



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218482 91177308-0d34-0410-b5e6-96231b3b80d8
-ms-extensions: Implement __super scope specifier (PR13236).

We build a NestedNameSpecifier that records the CXXRecordDecl in which
__super appeared. Name lookup is performed in all base classes of the
recorded CXXRecordDecl. Use of __super is allowed only inside class and
member function scope.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218484 91177308-0d34-0410-b5e6-96231b3b80d8
CGBuiltin: Use frem instruction rather than libcall to implement fmod

AFAICT the semantics of frem match libm's fmod.

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: Tom Stellard <tom@stellard.net>

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218488 91177308-0d34-0410-b5e6-96231b3b80d8