| Message ID | 20210422222644.GA5803@kam.mff.cuni.cz |
|---|---|
| State | New |
| Headers | show |
| Series | [wwwdocs] IPA/LTO/profile-feedback changes | expand |
On Fri, 23 Apr 2021, Jan Hubicka wrote: > this patch adds changesentry for IPA/LTO and FDO. Ah, cool! This looks fine with some minor edits. > --- a/htdocs/gcc-11/changes.html > +++ b/htdocs/gcc-11/changes.html > + <ul> > + <li>New IPA-modref pass was added to track side-effects of function calls > + and improve precision of points-to-analysis. Pass can be controlled > + by <code>-fipa-modref</code> attribute. "A new IPA-modref pass..." or "An IPA-modref pass..." And simply "side effects" without a dash. "The pass can be..." "...by the..." > + <li>Identical code folding pass was significantly improved to increase number of > + unified functions and to reduce compile-time memory use.</li> "The identical code..." "the number" > + <li>IPA-CP heuristics improved its estimation of potential usefulness of > + known loop bounds and strides by taking into account the estimated > + frequency of these loops. </li> Here I'd probably say "by taking the ... frequence of these loops into account". > + <li>LTO bytecode file format was optimized for smaller object files and > + faster streaming.</li> "The LTO bytecode format..." Thank you, Gerald
diff --git a/htdocs/gcc-11/changes.html b/htdocs/gcc-11/changes.html index 6f58cfe8..bba16ead 100644 --- a/htdocs/gcc-11/changes.html +++ b/htdocs/gcc-11/changes.html @@ -170,6 +170,37 @@ a work-in-progress.</p> use <code>-g</code> together with <code>-gdwarf-2</code>, <code>-gdwarf-3</code> or <code>-gdwarf-4</code>. </li> + <li> + Inter-procedural optimization improvements: + <ul> + <li>New IPA-modref pass was added to track side-effects of function calls + and improve precision of points-to-analysis. Pass can be controlled + by <code>-fipa-modref</code> attribute. + </li> + <li>Identical code folding pass was significantly improved to increase number of + unified functions and to reduce compile-time memory use.</li> + <li>IPA-CP heuristics improved its estimation of potential usefulness of + known loop bounds and strides by taking into account the estimated + frequency of these loops. </li> + </li> + <li> + Link-time optimization improvements: + <ul> + <li>LTO bytecode file format was optimized for smaller object files and + faster streaming.</li> + <li>Memory allocation of the linking stage was improved to reduce peak + memory use.</li> + </ul> + </li> + <li> + Profile driven optimization improvements: + <ul> + <li> + Using <a href="https://gcc.gnu.org/onlinedocs/gcc-10.1.0/gcc/Optimize-Options.html#index-fprofile-values"><code>-fprofile-values</code></a>, + was improved by tracking more target values for e.g. indirect calls. + </li> + </ul> + </li> </ul> <!-- .................................................................. -->