Merge #10843: Add attribute [[noreturn]] (C++11) to functions that will not return
b82c55a Add attribute [[noreturn]] (C++11) to functions that will not return (practicalswift)
Pull request description:
Add attribute `[[noreturn]]` (C++11) to functions that will not return.
Rationale:
* Reduce the number of false positives/false negatives from static analyzers with regards to things such as unused or unreachable code
* Potentially enable additional compiler optimizations
Tree-SHA512: 899683fe8b2fcf19bd334352271d368b46b805be9d426aac1808335fd95732d6d7078d3296951b9879196f3f6e3ec0fdb7695d0afdc3fbe4dd78a2ca70e91ff7