swift

c10e5ac6 - UnsafeGuaranteedPeephole: Handle exception edges correctly (#3471)

UnsafeGuaranteedPeephole: Handle exception edges correctly (#3471) * UnsafeGuaranteedPeephole: Handle exception edges correctly Exceptions can cause an exit before hitting the unsafeGuaranteedEnd instruction. Make sure that we check post dominance to find such cases. rdar://26890751 (cherry picked from commit 7cc447c7c7cac6d6c52e44cf7670fae8ee0631a3) * Adopt test case for swift-3.0-preview-3-branch