Update Sphinx documentation, commit 6989f64 [skip ci].

_sources/changelog.rst

@@ -24,9 +24,10 @@ Changes
 - **BREAKING**: the minimum supported LLVM version is now 11
   (`#342 <https://github.com/bluescarni/heyoka/pull/342>`__).
   This is a :ref:`breaking change <bchanges_2_0_0>`.
-- The LLVM SLP vectorizer is now enabled when JIT compiling
-  with optimisations
+- The LLVM SLP vectorizer can now be enabled
   (`#341 <https://github.com/bluescarni/heyoka/pull/341>`__).
+  This feature is opt-in due to the fact that enabling it
+  can considerably increase JIT compilation times.
 - The optimisation level for an ``llvm_state`` is now clamped
   within the ``[0, 3]`` range
   (`#340 <https://github.com/bluescarni/heyoka/pull/340>`__).

changelog.html

@@ -521,9 +521,10 @@ <h3>Changes<a class="headerlink" href="#changes" title="Permalink to this headin
 <li><p><strong>BREAKING</strong>: the minimum supported LLVM version is now 11
 (<a class="reference external" href="https://github.com/bluescarni/heyoka/pull/342">#342</a>).
 This is a <a class="reference internal" href="breaking_changes.html#bchanges-2-0-0"><span class="std std-ref">breaking change</span></a>.</p></li>
-<li><p>The LLVM SLP vectorizer is now enabled when JIT compiling
-with optimisations
-(<a class="reference external" href="https://github.com/bluescarni/heyoka/pull/341">#341</a>).</p></li>
+<li><p>The LLVM SLP vectorizer can now be enabled
+(<a class="reference external" href="https://github.com/bluescarni/heyoka/pull/341">#341</a>).
+This feature is opt-in due to the fact that enabling it
+can considerably increase JIT compilation times.</p></li>
 <li><p>The optimisation level for an <code class="docutils literal notranslate"><span class="pre">llvm_state</span></code> is now clamped
 within the <code class="docutils literal notranslate"><span class="pre">[0,</span> <span class="pre">3]</span></code> range
 (<a class="reference external" href="https://github.com/bluescarni/heyoka/pull/340">#340</a>).</p></li>