Related to PR15589.

llvm-svn: 177891

The loop convert tests for conflicting names have been extended to check for
macro names, types, and language keywords including language extensions. Tests
have also been added.

Fixes PR15322

Author: Jack Yang <jack.yang@intel.com>
Reviewer: gribozavr, klimek, revane
llvm-svn: 176690

For iterators where the dereference operator returns by value, LoopConvert
should use 'auto &&' in the range-based for loop expression.

If the dereference operator returns an rvalue reference, this is deemed too
strange and the for loop is not converted.

Moved test case from iterator_failing.cpp to iterator.cpp and added extra
tests.

Fixes PR15437.

Reviewer: gribozavr
llvm-svn: 176631

    
LoopConvert isn't properly handling iterators whose dereference operator
returns by value. This test case demonstrates the failure.

See PR15437.

llvm-svn: 176437

    
The Loop-Convert transform was mistransforming loops using 'this' implicitly.
Fixed and added tests.

Fixes PR15411.

llvm-svn: 176436

- Turned off -count-only tests as they aren't supported in cpp11-migrate
  yet.
- Updated tests to use new binary name and options to access
  loop-convert transform.
- Fixed header guards to not use restricted names.

Reviewers: klimek, gribozavr
llvm-svn: 171852