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* [Coroutines] Less IR for noexcept await_resumeBrian Gesiak2018-06-231-6/+33
| | | | | | | | | | | | | | | | | | | | Summary: In his review of https://reviews.llvm.org/D45860, @GorNishanov suggested avoiding generating additional exception-handling IR in the case that the resume function was marked as 'noexcept', and exceptions could not occur. This implements that suggestion. Test Plan: `check-clang` Reviewers: GorNishanov, EricWF Reviewed By: GorNishanov Subscribers: cfe-commits, GorNishanov Differential Revision: https://reviews.llvm.org/D47673 llvm-svn: 335422
* [Coroutines] Catch exceptions in await_resumeBrian Gesiak2018-05-041-0/+81
Summary: http://wg21.link/P0664r2 section "Evolution/Core Issues 24" describes a proposed change to Coroutines TS that would have any exceptions thrown after the initial suspend point of a coroutine be caught by the handler specified by the promise type's 'unhandled_exception' member function. This commit provides a sample implementation of the specified behavior. Test Plan: `check-clang` Reviewers: GorNishanov, EricWF Reviewed By: GorNishanov Subscribers: cfe-commits, lewissbaker, eric_niebler Differential Revision: https://reviews.llvm.org/D45860 llvm-svn: 331519
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