| commit | af18bce87cc7ee1ffc68f91abefa241ab209539e | [log] [tgz] |
|---|---|---|
| author | Cherry Zhang <cherryyz@google.com> | Sun Sep 20 23:29:20 2020 -0400 |
| committer | Cherry Zhang <cherryyz@google.com> | Mon Sep 28 21:30:01 2020 +0000 |
| tree | 61998d0ad04ff13fd25f4466a5bcfa627b9d7569 | |
| parent | ad0ab812f8b80416c92ed227974e3194e98f4cdc [diff] |
cmd/link: consider interface conversions only in reachable code The linker prunes methods that are not directly reachable if the receiver type is never converted to interface. Currently, this "never" is too strong: it is invalidated even if the interface conversion is in an unreachable function. This CL improves it by only considering interface conversions in reachable code. To do that, we introduce a marker relocation R_USEIFACE, which marks the target symbol as UsedInIface if the source symbol is reached. binary size before after cmd/compile 18897528 18887400 cmd/go 13607372 13470652 Change-Id: I66c6b69eeff9ae02d84d2e6f2bc7f1b29dd53910 Reviewed-on: https://go-review.googlesource.com/c/go/+/256797 Trust: Cherry Zhang <cherryyz@google.com> Reviewed-by: Jeremy Faller <jeremy@golang.org> Reviewed-by: Than McIntosh <thanm@google.com>
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