Refactor -KPIC handling for as invocation.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201719 91177308-0d34-0410-b5e6-96231b3b80d8
clang-cl: Pass /Z7 when we fallback to cl with debug info enabled

Clang itself only emits CodeView line tables, so it seems more
consistent to ask cl.exe for the same format.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201721 91177308-0d34-0410-b5e6-96231b3b80d8
MS ABI: Let non-virtual method overloads participate in vftable ordering

In the Microsoft ABI, the vftable is laid out as if all methods in every
overload set were declared in reverse order of declaration at the point
of declaration of the first overload in the set.

Previously we only considered virtual methods in an overload set, but
MSVC includes non-virtual methods for ordering purposes.

Fixes PR18902.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201722 91177308-0d34-0410-b5e6-96231b3b80d8
Use a switch for the architecture specific logic in
netbsd::Assemble::ConstructJob.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201725 91177308-0d34-0410-b5e6-96231b3b80d8
GC now unused variable.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201728 91177308-0d34-0410-b5e6-96231b3b80d8
Teach Clang to provide ::max_align_t in C11 and C++11 modes.

This definition is not chosen idly. There is an unfortunate reality with
max_align_t -- the specific nature of its definition leaks into the ABI
almost immediately. Because it is part of C11 and C++11 it becomes
essential for it to match with other systems on that ABI. There is an
effort to discourage any further use of this construct as a consequence
-- using max_align_t introduces an immediate ABI problem. We can never
update it to have larger alignment even as the microarchitecture changes
to necessitate higher alignment. =/

The particular definition here exactly matches the ABI of GCC's chosen
::max_align_t definition, for better or worse. This was written with the
help of Richard Smith who was decoding the exact ABI implications of the
selected definition in GCC. Notably, in-register arguments are impacted
by the particular definition chosen. =/

No one is under the illusion that this is a "good" or "useful"
definition of max_align_t, and we are working with the standards
committee to specify a more useful interface to address this need.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201729 91177308-0d34-0410-b5e6-96231b3b80d8
Hook up NetBSD/sparc and NetBSD/sparc64 as and ld invocations.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201730 91177308-0d34-0410-b5e6-96231b3b80d8
Remove a broken attempt to cope with someone #undef'ing __has_include_next.
This was broken because __has_include_next(...) would not be valid in a
preprocessor condition if __has_include_next is not defined.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201731 91177308-0d34-0410-b5e6-96231b3b80d8