| commit | 27342e5bd9694df2878534ec122058ccbcd291aa | [log] [tgz] |
|---|---|---|
| author | Cherry Zhang <cherryyz@google.com> | Fri Jul 10 18:49:01 2020 -0400 |
| committer | Cherry Zhang <cherryyz@google.com> | Thu Jul 16 18:44:07 2020 +0000 |
| tree | c5e794f436a64dd9daa5779db833eeae3fe1d43d | |
| parent | 5698ec36a86afcba0f7fe06e97e4cd5deaabe3f9 [diff] |
[dev.link] cmd/internal/goobj2, cmd/link: add content addressable symbols This CL introduces content-addressable symbols (a.k.a. hashed symbols) to object files. Content-addressable symbols are identified and referenced by their content hashes, instead of by names. In the object file, a new pseudo-package index PkgIdxHashed is introduced, for content-addressable symbols, and a new block is added to store their hashes. The hashes are used by the linker to identify and deduplicate the symbols. For now, we only support content-addressable symbols that are always locally defined (i.e. no cross-package references). As a proof of concept, make string constant symbols content- addressable. Change-Id: Iaf53efd74c0ffb54fa95f784628cc84e95844536 Reviewed-on: https://go-review.googlesource.com/c/go/+/242079 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Jeremy Faller <jeremy@golang.org>
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