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authorNAKAMURA Takumi <geek4civic@gmail.com>2011-08-12 06:17:17 +0000
committerNAKAMURA Takumi <geek4civic@gmail.com>2011-08-12 06:17:17 +0000
commitb5bb29c71fccc3c36c9175764303ef75c4fc73ee (patch)
tree0cce08e45290148df0538cf4093d95fa60efa5db /docs/GarbageCollection.html
parent3cc8482b06af75b4f519e4e9d7b85a48965fd0ba (diff)
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docs: Update HTML markup(s).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137433 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/GarbageCollection.html')
-rw-r--r--docs/GarbageCollection.html30
1 files changed, 15 insertions, 15 deletions
diff --git a/docs/GarbageCollection.html b/docs/GarbageCollection.html
index 761e1d0..a226b0e 100644
--- a/docs/GarbageCollection.html
+++ b/docs/GarbageCollection.html
@@ -290,10 +290,8 @@ doing so is very simple. (This code is heavily commented to help you
understand the data structure, but there are only 20 lines of meaningful
code.)</p>
-</div>
-
-<div class="doc_code"><pre
->/// @brief The map for a single function's stack frame. One of these is
+<pre class="doc_code">
+/// @brief The map for a single function's stack frame. One of these is
/// compiled as constant data into the executable for each function.
///
/// Storage of metadata values is elided if the %metadata parameter to
@@ -338,7 +336,9 @@ void visitGCRoots(void (*Visitor)(void **Root, const void *Meta)) {
for (unsigned e = R->Map->NumRoots; i != e; ++i)
Visitor(&amp;R->Roots[i], NULL);
}
-}</pre></div>
+}</pre>
+
+</div>
<!-- ======================================================================= -->
<h3>
@@ -395,12 +395,12 @@ program.</p>
<a name="gcattr">Specifying GC code generation: <tt>gc "..."</tt></a>
</h3>
+<div>
+
<div class="doc_code"><tt>
define <i>ty</i> @<i>name</i>(...) <span style="text-decoration: underline">gc "<i>name</i>"</span> { ...
</tt></div>
-<div>
-
<p>The <tt>gc</tt> function attribute is used to specify the desired GC style
to the compiler. Its programmatic equivalent is the <tt>setGC</tt> method of
<tt>Function</tt>.</p>
@@ -420,12 +420,12 @@ programs that use different garbage collection algorithms (or none at all).</p>
<a name="gcroot">Identifying GC roots on the stack: <tt>llvm.gcroot</tt></a>
</h3>
+<div>
+
<div class="doc_code"><tt>
void @llvm.gcroot(i8** %ptrloc, i8* %metadata)
</tt></div>
-<div>
-
<p>The <tt>llvm.gcroot</tt> intrinsic is used to inform LLVM that a stack
variable references an object on the heap and is to be tracked for garbage
collection. The exact impact on generated code is specified by a <a
@@ -453,7 +453,7 @@ the stack frame.</p>
<p>Consider the following fragment of Java code:</p>
-<pre>
+<pre class="doc_code">
{
Object X; // A null-initialized reference to an object
...
@@ -463,7 +463,7 @@ the stack frame.</p>
<p>This block (which may be located in the middle of a function or in a loop
nest), could be compiled to this LLVM code:</p>
-<pre>
+<pre class="doc_code">
Entry:
;; In the entry block for the function, allocate the
;; stack space for X, which is an LLVM pointer.
@@ -537,12 +537,12 @@ are used.</p>
<a name="gcwrite">Write barrier: <tt>llvm.gcwrite</tt></a>
</h4>
+<div>
+
<div class="doc_code"><tt>
void @llvm.gcwrite(i8* %value, i8* %object, i8** %derived)
</tt></div>
-<div>
-
<p>For write barriers, LLVM provides the <tt>llvm.gcwrite</tt> intrinsic
function. It has exactly the same semantics as a non-volatile <tt>store</tt> to
the derived pointer (the third argument). The exact code generated is specified
@@ -559,12 +559,12 @@ implement reference counting.</p>
<a name="gcread">Read barrier: <tt>llvm.gcread</tt></a>
</h4>
+<div>
+
<div class="doc_code"><tt>
i8* @llvm.gcread(i8* %object, i8** %derived)<br>
</tt></div>
-<div>
-
<p>For read barriers, LLVM provides the <tt>llvm.gcread</tt> intrinsic function.
It has exactly the same semantics as a non-volatile <tt>load</tt> from the
derived pointer (the second argument). The exact code generated is specified by