[llvm-commits] CVS: llvm/docs/LangRef.html

[Andrew Lenharth]

Changes in directory llvm/docs:

LangRef.html updated: 1.90 -> 1.91
---
Log message:

First step in adding pcmarker intrinsic.  Second step (soon) is adding backend support.

---
Diffs of the changes:  (+42 -1)

 LangRef.html |   43 ++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 42 insertions(+), 1 deletion(-)


Index: llvm/docs/LangRef.html
diff -u llvm/docs/LangRef.html:1.90 llvm/docs/LangRef.html:1.91
--- llvm/docs/LangRef.html:1.90	Mon Mar  7 16:13:59 2005
+++ llvm/docs/LangRef.html	Mon Mar 28 14:05:48 2005
@@ -126,6 +126,7 @@
           <li><a href="#i_returnaddress">'<tt>llvm.returnaddress</tt>' Intrinsic</a></li>
           <li><a href="#i_frameaddress">'<tt>llvm.frameaddress</tt>'   Intrinsic</a></li>
           <li><a href="#i_prefetch">'<tt>llvm.prefetch</tt>' Intrinsic</a></li>
+          <li><a href="#i_pcmarker">'<tt>llvm.pcmarker</tt>' Intrinsic</a></li>
         </ol>
       </li>
       <li><a href="#int_os">Operating System Intrinsics</a>
@@ -2548,6 +2549,46 @@
 
 </div>
 
+<!-- _______________________________________________________________________ -->
+<div class="doc_subsubsection">
+  <a name="i_pcmarker">'<tt>llvm.pcmarker</tt>' Intrinsic</a>
+</div>
+
+<div class="doc_text">
+
+<h5>Syntax:</h5>
+<pre>
+  call void (uint)* %llvm.pcmarker( uint <id> )
+</pre>
+
+<h5>Overview:</h5>
+
+
+<p>
+The '<tt>llvm.pcmarker</tt>' intrinsic is a method to export a PC in a region of 
+code to simulators and other tools.  The method is target specific, but it is 
+expected that the marker will use exported symbols to transmit the PC of the marker.
+The marker makes no guaranties that it will remain with any specific instruction 
+after optimizations.  It is possible that the presense of a marker will inhibit 
+optimizations.  The intended use is to be inserted after optmizations to allow
+corrolations of simulation runs.
+</p>
+
+<h5>Arguments:</h5>
+
+<p>
+<tt>id</tt> is a numerical id identifying the marker.
+</p>
+
+<h5>Semantics:</h5>
+
+<p>
+This intrinsic does not modify the behavior of the program.  Backends that do not 
+support this intrinisic may ignore it.
+</p>
+
+</div>
+
 
 <!-- ======================================================================= -->
 <div class="doc_subsection">
@@ -2974,7 +3015,7 @@
 
   <a href="mailto:sabre at nondot.org">Chris Lattner</a><br>
   <a href="http://llvm.cs.uiuc.edu">The LLVM Compiler Infrastructure</a><br>
-  Last modified: $Date: 2005/03/07 22:13:59 $
+  Last modified: $Date: 2005/03/28 20:05:48 $
 </address>
 </body>
 </html>