9e21e9c5cb
The loop finder doesn't return good information if it encounters an irreducible loop. Make a start on improving this, and set a function-level flag to indicate when there is such a loop (and the returned information might be flaky). Use that flag to prevent the loop rotater from getting confused; the existing code seems to depend on artifacts of the previous loop-finding algorithm. (There is one irreducible loop in the go library, in "inflate.go"). Change-Id: If6e26feab38d9b009d2252d556e1470c803bde40 Reviewed-on: https://go-review.googlesource.com/42150 Run-TryBot: David Chase <drchase@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
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