Prepare release

1 files changed, 93 insertions, 0 deletions

diff --git a/lib/compiler/doc/src/notes.xml b/lib/compiler/doc/src/notes.xml
index d45dfef8f3..275c6268fa 100644
--- a/lib/compiler/doc/src/notes.xml
+++ b/lib/compiler/doc/src/notes.xml
@@ -32,6 +32,99 @@
   <p>This document describes the changes made to the Compiler
     application.</p>
 
+<section><title>Compiler 7.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p><c>record_info/2</c> is a pseudo-function that
+	    requires literal arguments known at compile time.
+	    Therefore, the following usage is illegal: <c>fun
+	    record/info/2</c>. The compiler would crash when during
+	    compilation of that kind of code. Corrected to issue a
+	    compilation error.</p>
+          <p>
+	    Own Id: OTP-15760 Aux Id: ERL-907 </p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    The compiler has been rewritten to internally use an
+	    intermediate representation based on Static Single
+	    Assignment (SSA). The new intermediate representation
+	    makes more optimizations possible.</p>
+          <p>
+	    Most noticeable is that the binary matching optimizations
+	    are now applicable in many more circumstances than
+	    before.</p>
+          <p>
+	    Another noticeable change is that type optimizations are
+	    now applied across local function calls, and will remove
+	    a lot more redundant type tests than before.</p>
+          <p>
+	    Own Id: OTP-14894 Aux Id: ERL-714 </p>
+        </item>
+        <item>
+	    <p>Funs are no longer created when they are only used
+	    locally, greatly improving the performance of named funs
+	    and "fun-wrapped" macros.</p>
+          <p>
+	    Own Id: OTP-15273 Aux Id: ERL-639 </p>
+        </item>
+        <item>
+	    <p>All compiler options that can be given in the source
+	    file can now also be given in the option list or from the
+	    command line for <c>erlc</c>.</p>
+	    <p>Specifically, the option
+	    <c>{nowarn_deprecated_function,MFAs}</c> was only
+	    recognized when given in the file with the attribute
+	    <c>-compile()</c>. The option
+	    <c>{nowarn_unused_function,FAs}</c> was incorrectly
+	    documented to only work in a file, but it also worked
+	    when given in the option list.</p>
+          <p>
+	    Own Id: OTP-15456</p>
+        </item>
+        <item>
+	    <p> Do not allow function specifications for functions
+	    residing in other modules. </p>
+          <p>
+	    *** POTENTIAL INCOMPATIBILITY ***</p>
+          <p>
+	    Own Id: OTP-15563 Aux Id: ERL-845, OTP-15562 </p>
+        </item>
+        <item>
+	    <p>Internal documentation has now been added to the
+	    <em>Erts</em> and <em>Compiler</em> applications.</p>
+	    <p>The internal documents for <em>Erts</em> describe
+	    miscellaneous interesting implementation details. Those
+	    details can change at any time.</p>
+	    <p>The internal documentation for <em>Compiler</em>
+	    documents the API for the Core Erlang modules. While we
+	    will not change those APIs without good reason, we don't
+	    give the same guarantees about backward compatibility as
+	    for the rest of the APIs in OTP.</p>
+          <p>
+	    Own Id: OTP-15715</p>
+        </item>
+        <item>
+	    <p> There are new compiler options <c>nowarn_removed</c>
+	    and <c>{nowarn_removed,Items}</c> to suppress warnings
+	    for functions and modules that have been removed from
+	    OTP.</p>
+          <p>
+	    Own Id: OTP-15749 Aux Id: ERL-904 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Compiler 7.3.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>