Implement aliases. This fixes PR1017 and it's dependent bugs. CFE part
will follow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36435 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/BytecodeFormat.html b/docs/BytecodeFormat.html
index 56fc0af..396bf2f 100644
--- a/docs/BytecodeFormat.html
+++ b/docs/BytecodeFormat.html
@@ -943,11 +943,11 @@
target triple specified, i.e. a platform-independent module).</td>
</tr>
<tr>
- <td><a href="#string">string</a></td>
- <td class="td_left">The data layout string describing the endianness,
- pointer size, and type alignments for which the module was written
- (blank means no data layout specified, i.e. a platform-independent
- module).</td>
+ <td><a href="#string">string</a></td>
+ <td class="td_left">The data layout string describing the endianness,
+ pointer size, and type alignments for which the module was written
+ (blank means no data layout specified, i.e. a platform-independent
+ module).</td>
</tr>
<tr>
<td><a href="#llist">llist</a>(<a href="#string">string</a>)</td>
@@ -959,6 +959,11 @@
<td><a href="#string">string</a></td>
<td class="td_left">The inline asm block for this module.</td>
</tr>
+ <tr>
+ <td><a href="#zlist">zlist</a>(<a href="#alias">alias</a>)</td>
+ <td class="td_left">A zero terminated list of aliases occurring in the
+ module.</td>
+ </tr>
</tbody>
</table>
</div>
@@ -1123,7 +1128,7 @@
<td><a href="#bit">bit(5-30)</a></td>
<td class="td_left">Type slot number of type for the function.</td>
</tr>
- <tr>
+ <tr>
<td><a href="#bit">bit(31)</a></td>
<td class="td_left">Indicates whether an extension word follows.</td>
</tr>
@@ -1186,6 +1191,56 @@
</div>
<!-- _______________________________________________________________________ -->
+<div class="doc_subsubsection"><a name="alias">Alias Field</a>
+</div>
+<div class="doc_text">
+<p>Aliases are written using 3 <a href="#uint32_vbr">uint32_vbr</a>
+that encode information about alias itself and aliasee.</p>
+
+<p>The table below provides the bit layout of
+the first <a href="#uint32_vbr">uint32_vbr</a> which describes alias itself.</p>
+
+<table>
+ <tbody>
+ <tr>
+ <th><b>Type</b></th>
+ <th class="td_left"><b>Description</b></th>
+ </tr>
+ <tr>
+ <td><a href="#bit">bit(0-1)</a></td>
+ <td class="td_left">Alias linkage. 0 - External linkage, 1 - Internal
+ linkage, 2 - Weak linkage.</td>
+ </tr>
+ <tr>
+ <td><a href="#bit">bit(2-31)</a></td>
+ <td class="td_left">Type slot number of type for the alias itself.</td>
+ </tr>
+ </tbody>
+</table>
+
+ <p>The next two <a href="#uint32_vbr">uint32_vbr's</a> describes the
+ aliasee. </p>
+
+<table>
+ <tbody>
+ <tr>
+ <th><b>Type</b></th>
+ <th class="td_left"><b>Description</b></th>
+ </tr>
+ <tr>
+ <td><a href="#uint32_vbr">uint32_vbr</a></td>
+ <td class="td_left">Type slot number of type for the aliasee.</td>
+ </tr>
+ <tr>
+ <td><a href="#uint32_vbr">uint32_vbr</a></td>
+ <td class="td_left">Slot number of the aliasee.</td>
+ </tr>
+ </tbody>
+</table>
+
+</div>
+
+<!-- _______________________________________________________________________ -->
<div class="doc_subsection"><a name="constantpool">Constant Pool</a> </div>
<div class="doc_text">
<p>A constant pool defines as set of constant values. There are