Fix handling of pointers-to-members and comma expressions when
lifetime-extending temporaries in reference bindings.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183089 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a couple of bugs where jump diagnostics would not notice that a variable
has an initializer.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183092 91177308-0d34-0410-b5e6-96231b3b80d8
Refactor constant expression evaluation to associate the complete object of a
materialized temporary with the corresponding MaterializeTemporaryExpr. This is
groundwork for providing C++11's guaranteed static initialization for global
references bound to lifetime-extended temporaries (if the initialization is a
constant expression).

In passing, fix a couple of bugs where some evaluation failures didn't trigger
diagnostics, and a rejects-valid where potential constant expression testing
would assume that it knew the dynamic type of *this and would reject programs
which relied on it being some derived type.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183093 91177308-0d34-0410-b5e6-96231b3b80d8
Do not walk through member-accesses on bitfields when looking for the object
which is lifetime-extended by a reference binding. An additional temporary is
created for such a bitfield access (although we have no explicit AST
representation for it).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183095 91177308-0d34-0410-b5e6-96231b3b80d8
Fix line-breaking problem caused by comment.

Before, clang-format would not find a solution for formatting:
if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||
     bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaaaaaaa
    cccccc) {
}

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183096 91177308-0d34-0410-b5e6-96231b3b80d8
Improve detection preventing certain kind of formatting patterns.

An oversight in this detection made clang-format unable to format
the following nicely:
void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaa,
                         bbbbbbbbbbbbbbbbbbbbbbbbbb>(
    cccccccccccccccccccccccccccc);

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183097 91177308-0d34-0410-b5e6-96231b3b80d8