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A method selector expression can pick out a method or promoted method (represented by ODOTMETH), but it can also pick out an interface method from an embedded interface-typed field (represented by ODOTINTER). In the case that we're picking out an interface method, we're not able to fully devirtualize the method call. However, we're still able to improve escape analysis somewhat. E.g., the included test case demonstrates that we can optimize "i.M()" to "i.(T).I.M()", which means the T literal can be stack allocated instead of heap allocated. Fixes #42279. Change-Id: Ifa21d19011e2f008d84f9624b7055b4676b6d188 Reviewed-on: https://go-review.googlesource.com/c/go/+/266300 Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com> |
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