diff options
| author | jfb@chromium.org <jfb@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2014-03-03 21:45:31 +0000 |
|---|---|---|
| committer | jfb@chromium.org <jfb@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2014-03-03 21:45:31 +0000 |
| commit | aeeab0a46b2cbb43923e720d4c500129ed0ea1ff (patch) | |
| tree | 1abcc53a6bd85b34aad87fc4cf1b7b23efcd8c15 /native_client_sdk/doc_generated | |
| parent | a571de61eecb9e99e6adf4a79dca161b52ecf8db (diff) | |
| download | chromium_src-aeeab0a46b2cbb43923e720d4c500129ed0ea1ff.zip chromium_src-aeeab0a46b2cbb43923e720d4c500129ed0ea1ff.tar.gz chromium_src-aeeab0a46b2cbb43923e720d4c500129ed0ea1ff.tar.bz2 | |
NaCl docs: update computed goto support
mseaborn added computed goto lowering in:
https://codereview.chromium.org/120773002
R= binji@chromium.org, sbc@chromium.org, mseaborn@chromium.org
TEST=none
BUG= https://code.google.com/p/nativeclient/issues/detail?id=3695
NOTRY=true
(documentation only change)
Review URL: https://codereview.chromium.org/185653007
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254570 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'native_client_sdk/doc_generated')
| -rw-r--r-- | native_client_sdk/doc_generated/reference/pnacl-c-cpp-language-support.html | 25 | ||||
| -rw-r--r-- | native_client_sdk/doc_generated/sitemap.html | 1 |
2 files changed, 16 insertions, 10 deletions
diff --git a/native_client_sdk/doc_generated/reference/pnacl-c-cpp-language-support.html b/native_client_sdk/doc_generated/reference/pnacl-c-cpp-language-support.html index 8d09b4a..f6f463e 100644 --- a/native_client_sdk/doc_generated/reference/pnacl-c-cpp-language-support.html +++ b/native_client_sdk/doc_generated/reference/pnacl-c-cpp-language-support.html @@ -22,12 +22,12 @@ <li><a class="reference internal" href="#inline-assembly" id="id11">Inline Assembly</a></li> <li><a class="reference internal" href="#undefined-behavior" id="id12">Undefined Behavior</a></li> <li><a class="reference internal" href="#floating-point" id="id13">Floating-Point</a></li> -<li><p class="first"><a class="reference internal" href="#future-directions" id="id14">Future Directions</a></p> +<li><a class="reference internal" href="#computed-goto" id="id14">Computed <code>goto</code></a></li> +<li><p class="first"><a class="reference internal" href="#future-directions" id="id15">Future Directions</a></p> <ul class="small-gap"> -<li><a class="reference internal" href="#simd" id="id15">SIMD</a></li> -<li><a class="reference internal" href="#inter-process-communication" id="id16">Inter-Process Communication</a></li> -<li><a class="reference internal" href="#posix-style-signal-handling" id="id17">POSIX-style Signal Handling</a></li> -<li><a class="reference internal" href="#computed-goto" id="id18">Computed <code>goto</code></a></li> +<li><a class="reference internal" href="#simd" id="id16">SIMD</a></li> +<li><a class="reference internal" href="#inter-process-communication" id="id17">Inter-Process Communication</a></li> +<li><a class="reference internal" href="#posix-style-signal-handling" id="id18">POSIX-style Signal Handling</a></li> </ul> </li> </ul> @@ -205,6 +205,16 @@ in the <em>pexe</em>.</li> </ul> </li> </ul> +</section><section id="computed-goto"> +<h2 id="computed-goto">Computed <code>goto</code></h2> +<p>PNaCl supports computed <code>goto</code>, a non-standard GCC extension to C used +by some interpreters, by lowering them to <code>switch</code> statements. The +resulting use of <code>switch</code> might not be as fast as the original +indirect branches. If you are compiling a program that has a +compile-time option for using computed <code>goto</code>, it’s possible that the +program will run faster with the option turned off (e.g., if the program +does extra work to take advantage of computed <code>goto</code>).</p> +<p>NaCl supports computed <code>goto</code> without any transformation.</p> </section><section id="future-directions"> <h2 id="future-directions">Future Directions</h2> <section id="simd"> @@ -243,11 +253,6 @@ or suspension of threads.</p> <p>If PNaCl were to support either of these, the interaction of <code>volatile</code> and atomics with same-thread signal handling would need to be carefully detailed.</p> -</section><section id="computed-goto"> -<h3 id="computed-goto">Computed <code>goto</code></h3> -<p>PNaCl currently doesn’t support computed <code>goto</code>, a non-standard -extension to C used by some interpreters.</p> -<p>NaCl supports computed <code>goto</code>.</p> </section></section></section> {{/partials.standard_nacl_article}} diff --git a/native_client_sdk/doc_generated/sitemap.html b/native_client_sdk/doc_generated/sitemap.html index a029249..8295f4b 100644 --- a/native_client_sdk/doc_generated/sitemap.html +++ b/native_client_sdk/doc_generated/sitemap.html @@ -340,6 +340,7 @@ <li class="toctree-l2"><a class="reference internal" href="/native-client/reference/pnacl-c-cpp-language-support.html#inline-assembly">Inline Assembly</a></li> <li class="toctree-l2"><a class="reference internal" href="/native-client/reference/pnacl-c-cpp-language-support.html#undefined-behavior">Undefined Behavior</a></li> <li class="toctree-l2"><a class="reference internal" href="/native-client/reference/pnacl-c-cpp-language-support.html#floating-point">Floating-Point</a></li> +<li class="toctree-l2"><a class="reference internal" href="/native-client/reference/pnacl-c-cpp-language-support.html#computed-goto">Computed <code>goto</code></a></li> <li class="toctree-l2"><a class="reference internal" href="/native-client/reference/pnacl-c-cpp-language-support.html#future-directions">Future Directions</a></li> </ul> </li> |