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[wwwdocs] List IPA-CP of alignments in changes.html


I'd like to commit the following to gcc-5/changes.html so that IPA-CP
alignment propagation is listed among other new features.  OK?



Index: changes.html
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-5/changes.html,v
retrieving revision 1.82
diff -u -r1.82 changes.html
--- changes.html	25 Feb 2015 06:02:21 -0000	1.82
+++ changes.html	25 Feb 2015 14:19:31 -0000
@@ -57,6 +57,10 @@
 	 seen when building Chromium with link-time optimization.</li>
      <li>The symbol table and call-graph API was reworked to C++ and
+     <li>The interprocedural propagation of constants now also propagates
+         alignments of pointer parameters.  This for example means that the
+         vectorizer often does not need to generate loop prologues and epilogues
+         to make up for potential misalignments.</li>
     <li>Link-time optimization improvements:

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