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Keith Randall authored
Make sure we do any just-before-return cleanup on all paths out of a function, including when recovering. Each exit path should include deferreturn (if there are any defers) and then the exit code (e.g. copying heap-escaping return values back to the stack). Introduce a Defer SSA block type which has two outgoing edges - one the fallthrough edge (the defer was queued successfully) and one which immediately returns (the defer had a successful recover() call and normal execution should resume at the return point). Fixes #14725 Change-Id: Iad035c9fd25ef8b7a74dafbd7461cf04833d981f Reviewed-on: https://go-review.googlesource.com/20486Reviewed-by:
David Chase <drchase@google.com>
ddc6b644