[PATCH] D31670: [coroutines] Implement correct GRO lifetime
Gor Nishanov via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Tue Apr 4 09:18:39 PDT 2017
GorNishanov created this revision.
Herald added a subscriber: EricWF.
Sema creates a declaration for gro variable as:
auto $gro = $promise.get_return_object();
However, gro variable has to outlive coroutine frame and coroutine promise, but,
it can only be initialized after the coroutine promise was created, thus, we
split its emission in two parts: EmitGroAlloca emits an alloca and sets up
the cleanups. Later when the coroutine promise is available we initialize
the gro and set the flag that the cleanup is now active.
https://reviews.llvm.org/D31670
Files:
lib/CodeGen/CGCoroutine.cpp
test/CodeGenCoroutines/coro-gro.cpp
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