<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>
</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">
returnaddress, // Yields the return address of a dynamic call frame
frameaddress, // Yields the frame address of a dynamic call frame
prefetch, // Prefetch a value into the cache
+ pcmarker, // Export a PC from near the marker
// setjmp/longjmp intrinsics.
setjmp, // Used to represent a setjmp call in C
case Intrinsic::prefetch:
break; // Simply strip out prefetches on unsupported architectures
+ case Intrinsic::pcmarker:
+ break; // Simply strip out pcmarker on unsupported architectures
+
case Intrinsic::dbg_stoppoint:
case Intrinsic::dbg_region_start:
case Intrinsic::dbg_region_end:
case Intrinsic::memset: NumArgs = 4; break;
case Intrinsic::prefetch: NumArgs = 3; break;
+ case Intrinsic::pcmarker:
+ NumArgs = 1;
+ Assert1(isa<Constant>(CI.getOperand(1)),
+ "First argument to llvm.pcmarker must be a constant!", &CI);
+ break;
case Intrinsic::not_intrinsic:
assert(0 && "Invalid intrinsic!"); NumArgs = 0; break;