f5c53e0deb
Move to implicit (mostly) instead of explicit exit blocks. RET and RETJMP have no outgoing edges - they implicitly exit. CALL only has one outgoing edge, as its exception edge is implicit as well. Exit blocks are only used for unconditionally panicking code, like the failed branches of nil and bounds checks. There may now be more than one exit block. No merges happen at exit blocks. The only downside is it is harder to find all the places code can exit the method. See the reverse dominator code for an example. Change-Id: I42e2fd809a4bf81301ab993e29ad9f203ce48eb0 Reviewed-on: https://go-review.googlesource.com/14462 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> |
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The Go Programming Language
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