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doc: add release note fragment on inlining changes

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Add some material to the "compiler" portion of the release
notes describing the 1.22 changes to the inliner.

For #61422.
Updates #61502.

Change-Id: Ic7f1cb7f70752446d2465ea3da6bd7488436342b
Reviewed-on: https://go-review.googlesource.com/c/go/+/549395
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Than McIntosh 2023-12-13 11:37:46 -05:00
parent 6146a73d27
commit d1a186d7d0
1 changed files with 12 additions and 0 deletions
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doc/go1.22.html
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@ -219,6 +219,18 @@ defer func() {
14% improvement from enabling PGO.
</p>
<p><!-- https://go.dev/cl/528321 -->
The compiler now interleaves devirtualization and inlining, so interface
method calls are better optimized.
</p>
<p><!-- https://go.dev/issue/61502 -->
Go 1.22 also includes a preview of an enhanced implementation of the compiler's inlining phase that uses heuristics to boost inlinability at call sites deemed "important" (for example, in loops) and discourage inlining at call sites deemed "unimportant" (for example, on panic paths).
Building with <code>GOEXPERIMENT=newinliner</code> enables the new call-site
heuristics; see <a href="https://go.dev/issue/61502">issue #61502</a> for
more info and to provide feedback.
</p>
<h2 id="linker">Linker</h2>
<p><!-- CL 493136 -->