| Message ID | 4F19B2BB.2020401@gjlay.de |
|---|---|
| State | New |
| Headers | show |
http://gcc.gnu.org/ml/gcc-patches/2012-01/msg01020.html Georg-Johann Lay wrote: > Adding AVR-specific release notes to wwwdocs/htdocs/gcc-4.7/changes.html > > Ok? > > Johann >
On Fri, 20 Jan 2012, Georg-Johann Lay wrote:
> Adding AVR-specific release notes to wwwdocs/htdocs/gcc-4.7/changes.html
Index: changes.html
===================================================================
+ <li>The AVR port's libgcc has been improved and its multilib structure
+ has been enhanced. As a result, all objects contributing to an
+ application must either be compiled with GCC versions up to 4.6.x or
+ with GCC versions ≥ 4.7.</li>
How about "...compiled with older versions of GCC, up to GCC 4.6.x,
or GCC 4.7.0 and later" ?
And I'd omit the just ≥4.7.0 should work?
+ <li>Support has beed added for instrinsic named address spaces
"Support for...has been added" (also typo: beed -> been)
+ <code>__pgm</code>, <code>__pgm1</code>, …, <code>__pgm5</code>
How about omitting here?
+ and <code>__pgmx</code>. These address spaces locate read-only data in
+ flash memory and allow reading from flash memory by means of vanilla
+ C instructions, i.e. without the need of (inline) assembler code.</li>
What's a C instruction? C builtins?
+ <li>Support for AVR-specific built-in functions has beed added.</li>
Which ones?
+ <li>New command-line options <code>-maccumulate-args</code>,
+ <code>-mbranch-cost=<i>cost</i></code> and <code>-mstrict-X</code>
+ were added to allow better fine-tuning of code optimization.</li>
Should X be put under <i>...</i> here, to?
+ <li>Many optimizations to:
+ <ul>
+ <li>64-bit integer arithmetic</li>
+ <li>Widening multiplication</li>
+ <li>Integer divide-by-constant</li>
"division by a constant"
+ <li>Generic built-in functions + like <code>__builtin_ffs*</code>,
<code>__builtin_clz*</code>, etc.</li>
I don't think we need here. Breaing the lines here is something
a web browser should avoid, but it is not verboten, technically.
+ <li>Merging of data in <code>.progmem</code></li>
What is ".progmen"? Perhaps paraphrase this briefly?
The update is fine assuming you look into my suggestions.
Thanks you,
Gerald
Index: changes.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.7/changes.html,v retrieving revision 1.73 diff -u -r1.73 changes.html --- changes.html 12 Jan 2012 19:35:29 -0000 1.73 +++ changes.html 20 Jan 2012 18:29:39 -0000 @@ -45,6 +45,11 @@ <code>-compat-bsd</code> compiler option is not recognized any longer.</li> + <li>The AVR port's libgcc has been improved and its multilib structure + has been enhanced. As a result, all objects contributing to an + application must either be compiled with GCC versions up to 4.6.x or + with GCC versions ≥ 4.7.</li> + <li>The ARM port's <code>-mwords-little-endian</code> option has been deprecated. It will be removed in a future release.</li> @@ -530,6 +535,40 @@ <h2 id="targets">New Targets and Target Specific Improvements</h2> +<h3 id="avr">AVR</h3> + <ul> + <li>Support has beed added for instrinsic named address spaces + <code>__pgm</code>, <code>__pgm1</code>, …, <code>__pgm5</code> + and <code>__pgmx</code>. These address spaces locate read-only data in + flash memory and allow reading from flash memory by means of vanilla + C instructions, i.e. without the need of (inline) assembler code.</li> + <li>Support for AVR-specific built-in functions has beed added.</li> + <li>Support has beed added for the built-in, 24-bit, signed and unsigned + integer types <code>__int24</code> and <code>__uint24</code>.</li> + <li>New command-line options <code>-maccumulate-args</code>, + <code>-mbranch-cost=<i>cost</i></code> and <code>-mstrict-X</code> + were added to allow better fine-tuning of code optimization.</li> + <li>Many optimizations to: + <ul> + <li>64-bit integer arithmetic</li> + <li>Widening multiplication</li> + <li>Integer divide-by-constant</li> + <li>Generic built-in functions + like <code>__builtin_ffs*</code>, <code>__builtin_clz*</code>, etc.</li> + <li>If-else decision trees generated by <code>switch</code> instructions</li> + <li>Merging of data in <code>.progmem</code></li> + <li>Devices with 8-bit wide stack pointer register</li> + <li>…</li> + </ul> + <li>Better documentation: + <ul> + <li>Handling of <code>EIND</code> and indirect jumps on devices with + more than 128 KiB of program memory.</li> + <li>AVR-specific built-in macros.</li> + </ul> + </li> + </ul> + <h3 id="arm">ARM</h3> <ul> <li>GCC now supports the Cortex-A7 processor implementing the