public inbox for gcc-cvs-wwwdocs@sourceware.org
help / color / mirror / Atom feed
* gcc-wwwdocs branch master updated. 08249747b2539776f2f071438e6c496e174bfcfc
@ 2021-04-26 20:25 Jan Hubicka
0 siblings, 0 replies; only message in thread
From: Jan Hubicka @ 2021-04-26 20:25 UTC (permalink / raw)
To: gcc-cvs-wwwdocs
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "gcc-wwwdocs".
The branch, master has been updated
via 08249747b2539776f2f071438e6c496e174bfcfc (commit)
from c88fea4535093106bb9dcb1548194e1d94b0bd2a (commit)
Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.
- Log -----------------------------------------------------------------
commit 08249747b2539776f2f071438e6c496e174bfcfc
Author: Jan Hubicka <hubicka@ucw.cz>
Date: Mon Apr 26 22:25:18 2021 +0200
Document IPA/LTO/FDO changes.
diff --git a/htdocs/gcc-11/changes.html b/htdocs/gcc-11/changes.html
index 6f58cfe8..2c98b9a3 100644
--- a/htdocs/gcc-11/changes.html
+++ b/htdocs/gcc-11/changes.html
@@ -170,6 +170,39 @@ 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>A new IPA-modref pass was added to track side effects of function calls
+ and improve precision of points-to-analysis. The pass can be controlled
+ by the <a href="https://gcc.gnu.org/onlinedocs/gcc-11.1.0/gcc/Optimize-Options.html#index-fipa-modref"><code>-fipa-modref</code></a> option.
+ </li>
+ <li>The identical code folding pass (controlled by <a href="https://gcc.gnu.org/onlinedocs/gcc-11.1.0/gcc/Optimize-Options.html#index-fipa-ocf"><code>-fipa-icf</code></a>)
+ was significantly improved to increase the number of
+ unified functions and to reduce compile-time memory use.</li>
+ <li>IPA-CP (Interprocedural constant propagation)
+ heuristics improved its estimation of potential usefulness of
+ known loop bounds and strides by taking the estimated frequency of
+ these loops into account.</li>
+ </li>
+ <li>
+ Link-time optimization improvements:
+ <ul>
+ <li>The LTO bytecode 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-11.1.0/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>
<!-- .................................................................. -->
-----------------------------------------------------------------------
Summary of changes:
htdocs/gcc-11/changes.html | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
hooks/post-receive
--
gcc-wwwdocs
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2021-04-26 20:25 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-04-26 20:25 gcc-wwwdocs branch master updated. 08249747b2539776f2f071438e6c496e174bfcfc Jan Hubicka
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).