<h2 id="compiler">Compiler</h2>
+<p>
+ Profile-guide optimization (PGO), added as a preview in Go 1.20, is now ready
+ for general use. PGO enables additional optimizations on code identified as
+ hot by profiles of production workloads. As mentioned in the
+ <a href="#go-command">Go command section</a>, PGO is enabled by default for
+ binaries that contain a <code>default.pgo</code> profile in the main
+ package directory. Performance improvements vary depending on application
+ behavior, with most programs from a representative set of Go programs seeing
+ between 2 and 7% improvement from enabling PGO. See the
+ <a href="/doc/pgo">PGO user guide</a> for detailed documentation.
+</p>
+
+<!-- https://go.dev/issue/59959 -->
+<p>
+ PGO builds can now devirtualize some interface method calls, adding a
+ concrete call to the most common callee. This enables further optimization,
+ such as inlining the callee.
+</p>
+
<!-- CL 490819 -->
<p>
<!-- cmd/cgo: reject attempts to declare methods on C types -->