Update release notes

1 files changed, 100 insertions, 0 deletions

diff --git a/lib/compiler/doc/src/notes.xml b/lib/compiler/doc/src/notes.xml
index 7ea000a895..c08839bc7b 100644
--- a/lib/compiler/doc/src/notes.xml
+++ b/lib/compiler/doc/src/notes.xml
@@ -31,6 +31,106 @@
   <p>This document describes the changes made to the Compiler
     application.</p>
 
+<section><title>Compiler 4.7</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Several problems in the inliner have been fixed.</p>
+          <p>
+	    Own Id: OTP-8552</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    The module binary from EEP31 (and EEP9) is implemented.</p>
+          <p>
+	    Own Id: OTP-8217</p>
+        </item>
+        <item>
+	    <p>Local and imported functions now override the
+	    auto-imported BIFs when the names clash. The pre R14
+	    behaviour was that auto-imported BIFs would override
+	    local functions. To avoid that old programs change
+	    behaviour, the following will generate an error:</p>
+	    <list><item><p>Doing a call without explicit module name
+	    to a local function having a name clashing with the name
+	    of an auto-imported BIF that was present (and
+	    auto-imported) before OTP R14A</p></item>
+	    <item><p>Explicitly importing a function having a name
+	    clashing with the name of an autoimported BIF that was
+	    present (and autoimported) before OTP R14A</p></item>
+	    <item><p>Using any form of the old compiler directive
+	    <c>nowarn_bif_clash</c></p></item> </list> <p>If the BIF
+	    was added or auto-imported in OTP R14A or later,
+	    overriding it with an import or a local function will
+	    only result in a warning,</p> <p>To resolve clashes, you
+	    can either use the explicit module name <c>erlang</c> to
+	    call the BIF, or you can remove the auto-import of that
+	    specific BIF by using the new compiler directive
+	    <c>-compile({no_auto_import,[F/A]}).</c>, which makes all
+	    calls to the local or imported function without explicit
+	    module name pass without warnings or errors.</p> <p>The
+	    change makes it possible to add auto-imported BIFs
+	    without breaking or silently changing old code in the
+	    future. However some current code ingeniously utilizing
+	    the old behaviour or the <c>nowarn_bif_clash</c> compiler
+	    directive, might need changing to be accepted by the
+	    compiler.</p>
+          <p>
+	    *** POTENTIAL INCOMPATIBILITY ***</p>
+          <p>
+	    Own Id: OTP-8579</p>
+        </item>
+        <item>
+	    <p>The undocumented, unsupport, and deprecated function
+	    <c>lists:flat_length/1</c> has been removed.</p>
+          <p>
+	    Own Id: OTP-8584</p>
+        </item>
+        <item>
+	    <p>Nested records can now be accessed without
+	    parenthesis. See the Reference Manual for examples.
+	    (Thanks to YAMASHINA Hio and Tuncer Ayaz.)</p>
+          <p>
+	    Own Id: OTP-8597</p>
+        </item>
+        <item>
+	    <p>It is now possible to suppress the warning in code
+	    such as "<c>list_to_integer(S), ok</c>" by assigning the
+	    ignored value "_" like this: "<c>_ = list_to_integer(S),
+	    ok</c>".</p>
+          <p>
+	    Own Id: OTP-8602</p>
+        </item>
+        <item>
+	    <p><c>receive</c> statements that can only read out a
+	    newly created reference are now specially optimized so
+	    that it will execute in constant time regardless of the
+	    number of messages in the receive queue for the process.
+	    That optimization will benefit calls to
+	    <c>gen_server:call()</c>. (See <c>gen:do_call/4</c> for
+	    an example of a receive statement that will be
+	    optimized.)</p>
+          <p>
+	    Own Id: OTP-8623</p>
+        </item>
+        <item>
+	    <p>The compiler optimizes record operations better.</p>
+          <p>
+	    Own Id: OTP-8668</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Compiler 4.6.5</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>