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doc/go1.15: add release notes for new linker

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Add a blurb to the release notes describing improvements made to the
Go linker in the most recent development cycle.

Updates #37419.

Change-Id: I3b870f0c00efc0b7b33aab2631d8c4e1c273922d
Reviewed-on: https://go-review.googlesource.com/c/go/+/236159
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
This commit is contained in:
Than McIntosh 2020-06-02 13:56:26 -04:00
parent 9b90491e4a
commit 9326d71874
1 changed files with 28 additions and 2 deletions
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doc/go1.15.html
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@ -209,8 +209,34 @@ TODO
updated to satisfy the safety rules.
</p>
<p><!-- CL 231497 -->
TODO: <a href="https://golang.org/cl/231497">https://golang.org/cl/231497</a>: merge branch &#39;dev.link&#39; into master
<h2 id="linker">Linker</h2>
<p>
This release includes substantial improvements to the Go linker,
which reduce linker resource usage (both time and memory) and
improve code robustness/maintainability.
</p>
<p>
For a representative set of large Go programs, linking is 20% faster
and requires 30% less memory on average, for <code>ELF</code>-based
OSes running on <code>amd64</code> architectures, with more modest
improvements for other architecture/OS combinations.
</p>
<p>
The key contributors to better linker performance are a newly
redesigned object file format, and a revamping of internal
phases to increase concurrency (for example, applying relocations to
symbols in parallel). Object files in Go 1.15 are slightly larger
than their 1.14 equivalents.
</p>
<p>
These changes are part of a multi-release project
to <a href="https://golang.org/s/better-linker">modernize the Go
linker</a>, meaning that there will be additional linker
improvements expected in future releases.
</p>
<h2 id="library">Core library</h2>