Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186722 91177308-0d34-0410-b5e6-96231b3b80d8
Correctly handle packs for variadic type traits.

I'm not sure how to write a test for this; the following shows the
difference in -ast-dump:

template <int x> struct A {};
template <class T> struct B { };
template <class ...Args> using C = A<(__is_trivially_constructible(Args...))>;
template <class ...Args> using D = C<B<Args>...>;

However, I can't seem to write a test that triggers a visible difference
in behavior.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186726 91177308-0d34-0410-b5e6-96231b3b80d8
Use function overloading instead of template specialization for diagnosis of bad template argument deductions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186727 91177308-0d34-0410-b5e6-96231b3b80d8
Fix pack instantiation with function types.

Make sure we correctly expand packs which expand to another
pack in a function type.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186728 91177308-0d34-0410-b5e6-96231b3b80d8
Revert "Use function overloading instead of template specialization for diagnosis of bad template argument deductions."

This reverts commit a730f548325756d050d4caaa28fcbffdae8dfe95.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186729 91177308-0d34-0410-b5e6-96231b3b80d8
FIXME fix: improving diagnostics for template arguments deduction of class templates and explicit specializations
    This patch essentially removes all the FIXMEs following calls to DeduceTemplateArguments() that want to keep track of deduction failure info.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186730 91177308-0d34-0410-b5e6-96231b3b80d8