481ab86aaf
Instead of adding a typelinks section to a Go binary, mark the start and end of the typelinked type descriptors. The runtime can then step through the descriptors to find them all, rather than relying on the extra linker-generated offset list. The runtime steps through the type descriptors lazily, as many Go programs don't need the typelinks list at all. This reduces the size of cmd/go by 15K bytes, which isn't much but it's not nothing. A future CL will change the reflect package to use the type pointers directly rather than converting to offsets and then back to type pointers. For #6853 Change-Id: Id0af4ce81c5b1cea899fc92b6ff9d2db8ce4c267 Reviewed-on: https://go-review.googlesource.com/c/go/+/724261 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Ian Lance Taylor <iant@golang.org>
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