[PATCH] D26316: [coroutines] Build and pass coroutine_handle to await_suspend.

[Eric Fiselier via cfe-commits]

EricWF created this revision.
EricWF added reviewers: rsmith, GorNishanov.
EricWF added a subscriber: cfe-commits.
Herald added a subscriber: mehdi_amini.

This patch adds passing a `coroutine_handle` object to `await_suspend` calls.

It builds the `coroutine_handle`  using `coroutine_handle<PromiseType>::from_address(__builtin_coro_frame())`.


https://reviews.llvm.org/D26316

Files:
  include/clang/Basic/DiagnosticSemaKinds.td
  lib/Sema/SemaCoroutine.cpp
  test/CodeGenCoroutines/coro-alloc.cpp
  test/SemaCXX/coroutines.cpp

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