[PATCH] D47673: [Coroutines] Less IR for noexcept await_resume

[Brian Gesiak via Phabricator via cfe-commits]

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

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`


Repository:
  rC Clang

https://reviews.llvm.org/D47673

Files:
  lib/CodeGen/CGCoroutine.cpp
  test/CodeGenCoroutines/coro-await-resume-eh.cpp

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