[patch, wwwdocs] Mention work on array temporaries

[patch, wwwdocs] Mention work on array temporaries

[Thomas Koenig]

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Hello world,

here is a patch for wwwdocs mentioning the improvements in array
temporaries.

If anybody has suggestions on improvements of the wording, I would
appreciate that.

OK?

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Index: changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.6/changes.html,v
retrieving revision 1.73
diff -u -r1.73 changes.html
--- changes.html	27 Nov 2010 10:26:28 -0000	1.73
+++ changes.html	9 Dec 2010 19:14:43 -0000
@@ -254,6 +254,9 @@
     support <code>REAL(16)</code> in hardware nor those which do not support
     <code>libquadmath</code>.</li>
     <li>Much improved compile time for large array constructors.</li>
+    <li>Use of temporary arrays in assignment expressions is avoided for
+      many cases.  The compiler now reverses loops in order to avoid
+      generating a temporary array where possible.</li>
     <li>Improved diagnostics, especially with
       <code>-fwhole-file</code>.</li>
     <li>The <code>-fwhole-file</code> flag is now enabled by default. This

Re: [patch, wwwdocs] Mention work on array temporaries

[Gerald Pfeifer]

On Thu, 9 Dec 2010, Thomas Koenig wrote:
> here is a patch for wwwdocs mentioning the improvements in array
> temporaries.

This looks good.  The one question I'll pose is "What's the benefit
for the user?"  Performance, presumably?

Gerald

Re: [patch, wwwdocs] Mention work on array temporaries

[Thomas Koenig]

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Hello Gerald,


> This looks good.  The one question I'll pose is "What's the benefit
> for the user?"  Performance, presumably?

here's what I committed, taking your remark into account.  Thanks!

	Thomas

2010-12-18  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * changes.html: Mention work on reducing array temporaries.


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Index: changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.6/changes.html,v
retrieving revision 1.77
diff -u -r1.77 changes.html
--- changes.html	15 Dec 2010 23:15:06 -0000	1.77
+++ changes.html	18 Dec 2010 11:44:55 -0000
@@ -254,6 +254,10 @@
     support <code>REAL(16)</code> in hardware nor those which do not support
     <code>libquadmath</code>.</li>
     <li>Much improved compile time for large array constructors.</li>
+    <li>In order to reduce execution time and memory usage, use of
+      temporary arrays in assignment expressions is avoided for
+      many cases.  The compiler now reverses loops in order to avoid
+      generating a temporary array where possible.</li>
     <li>Improved diagnostics, especially with
       <code>-fwhole-file</code>.</li>
     <li>The <code>-fwhole-file</code> flag is now enabled by default. This

Re: [patch, wwwdocs] Mention work on array temporaries

[Gerald Pfeifer]

On Sat, 18 Dec 2010, Thomas Koenig wrote:
> here's what I committed, taking your remark into account.  Thanks!
> 
> 	Thomas
> 
> 2010-12-18  Thomas Koenig  <tkoenig@gcc.gnu.org>
> 
>         * changes.html: Mention work on reducing array temporaries.

Cool.  I just committed a small editorial change on top to avoid
consecutive use of "use"/"usage".

Gerald

Index: changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.6/changes.html,v
retrieving revision 1.85
diff -u -r1.85 changes.html
--- changes.html	9 Jan 2011 14:12:15 -0000	1.85
+++ changes.html	16 Jan 2011 23:44:48 -0000
@@ -273,7 +273,7 @@
     support <code>REAL(16)</code> in hardware nor those which do not support
     <code>libquadmath</code>.</li>
     <li>Much improved compile time for large array constructors.</li>
-    <li>In order to reduce execution time and memory usage, use of
+    <li>In order to reduce execution time and memory consumption, use of
       temporary arrays in assignment expressions is avoided for
       many cases.  The compiler now reverses loops in order to avoid
       generating a temporary array where possible.</li>