CodeGen: Fix linkage of reference temporaries

Summary:
A reference temporary should inherit the linkage of the variable it
initializes.  Otherwise, we may hit cases where a reference temporary
wouldn't have the same value in all translation units.

Reviewers: rsmith

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D3515

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@207451 91177308-0d34-0410-b5e6-96231b3b80d8
Move all CUDA testing inputs to Inputs/ subdirectory inside the tests.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@207453 91177308-0d34-0410-b5e6-96231b3b80d8
When Driver::generateCompilationDiagnostics is filtering the list of
inputs to the preprocessor, check for invalid types first because not
all linker inputs have an option value to retrieve.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@207454 91177308-0d34-0410-b5e6-96231b3b80d8