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author | Bill Wendling <isanbard@gmail.com> | 2012-01-12 23:06:28 +0000 |
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committer | Bill Wendling <isanbard@gmail.com> | 2012-01-12 23:06:28 +0000 |
commit | bf5b13d07ec942c865479448e1b9344fe0c9509f (patch) | |
tree | 1bbb68a0ad2cce698532e97d83c21ecc41fd24b6 /docs | |
parent | 86b1a7d61413aed40a68f98f1e8f17fd79ebd7a2 (diff) | |
download | external_llvm-bf5b13d07ec942c865479448e1b9344fe0c9509f.zip external_llvm-bf5b13d07ec942c865479448e1b9344fe0c9509f.tar.gz external_llvm-bf5b13d07ec942c865479448e1b9344fe0c9509f.tar.bz2 |
Revert accidental commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148065 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs')
-rw-r--r-- | docs/LangRef.html | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/docs/LangRef.html b/docs/LangRef.html index 6881620..2799083 100644 --- a/docs/LangRef.html +++ b/docs/LangRef.html @@ -106,11 +106,6 @@ <li><a href="#fpaccuracy">'<tt>fpaccuracy</tt>' Metadata</a></li> </ol> </li> - <li><a href="#module_flags">Module Flags Metadata</a> - <ol> - <li><a href="#objc_metadata">Objective-C Metadata</a></li> - </ol> - </li> </ol> </li> <li><a href="#intrinsic_globals">Intrinsic Global Variables</a> @@ -3031,138 +3026,6 @@ call void @llvm.dbg.value(metadata !24, i64 0, metadata !25) </div> -<!-- ======================================================================= --> -<h3> - <a name="module_flags">Module Flags Metadata</a> -</h3> - -<div> - -<p>Occasionally, the front-end needs to transmit data to the linker which - affects its behavior. The LLVM IR isn't sufficient to transmit this - information, so one should use the <tt>llvm.module.flags</tt> named - metadata.</p> - -<p>The <tt>llvm.module.flags</tt> metadata is a named metadata, whose elements - consist of metadata triplets. For example:</p> - -<pre class="doc_code"> -!0 = metadata !{ i32 0, metadata !"foo", i32 1 } -!1 = metadata !{ i32 1, metadata !"bar", i32 37 } - -!llvm.module.flags = !{ !0, !1 } -</pre> - -<p>The first field specifies the behavior of the linker upon encountering two of - the same values. Behavior could range from: emitting an error if some of the - modules' flags disagree, emitting a warning, etc. The second field is the - name of the metadata. The third field is the value of the metadata.</p> - -<p>When two modules are linked together, the <tt>llvm.module.flags</tt> metadata - are unioned together.</p> - -</div> - -<!-- _______________________________________________________________________ --> -<h4> - <a name="objc_metadata">Objective-C Metadata</a> -</h4> - -<div> - -<p>The following module flags are used to convey Objective-C metadata to the - linker.</p> - -<table border="1" cellspacing="0" cellpadding="4"> - <tbody> - <tr> - <th>Value</th> - <th>Behavior</th> - </tr> - <tr> - <td>1</td> - <td align="left"> - <dl> - <dt><tt>Error</tt></dt> - <dd>Causes the linker to emit an error when two values disagree.</dd> - </dl> - </td> - </tr> - <tr> - <td>2</td> - <td align="left"> - <dl> - <dt><tt>Require</tt></dt> - <dd>Causes the linker to emit an error when the specified value is not - present.</dd> - </dl> - </td> - </tr> - <tr> - <td>3</td> - <td align="left"> - <dl> - <dt><tt>Override</tt></dt> - <dd>Causes the linker to use the specified value if the two values - disagree. It's an error if two pieces of the same metadata have - the <tt>Override</tt> behavior but different values.</dd> - </dl> - </td> - </tr> - </tbody> -</table> - -<p>The names are:</p> - -<ul> - <li><tt>Objective-C Version</tt></li> - <li><tt>Objective-C Garbage Collection</tt></li> - <li><tt>Objective-C GC Only</tt></li> - <li><tt>Objective-C Image Info Section</tt></li> -</ul> - -<p> - -<p>Here is an example of how to use the Objective-C metadata:</p> - -<pre class="doc_code"> -<u>Module A</u> -!0 = metadata !{ i32 1, metadata !"Objective-C Version", i32 2 } -!1 = metadata !{ i32 1, metadata !"Objective-C Garbage Collection", i32 2 } -!2 = metadata !{ i32 1, metadata !"Objective-C Image Info Section", - metadata !"__DATA, __objc_imageinfo, regular, no_dead_strip" } -!llvm.module.flags = !{ !0, !1, !2 } - -<u>Module B</u> -!0 = metadata !{ i32 1, metadata !"Objective-C Version", i32 2 } -!1 = metadata !{ i32 1, metadata !"Objective-C Garbage Collection", i32 2 } -!2 = metadata !{ i32 1, metadata !"Objective-C GC Only", i32 4 } -!3 = metadata !{ i32 1, metadata !"Objective-C Image Info Section", - metadata !"__DATA, __objc_imageinfo, regular, no_dead_strip" } -!4 = metadata !{ i32 2, metadata !"Objective-C GC Only", - metadata !{ - metadata !"Objective-C Garbage Collection", i32 2 - } -} -!llvm.module.flags = !{ !0, !1, !2, !3, !4 } - -<u>Linked Module</u> -!0 = metadata !{ i32 1, metadata !"Objective-C Version", i32 2 } -!1 = metadata !{ i32 3, metadata !"Objective-C Garbage Collection", i32 2 } -!2 = metadata !{ i32 1, metadata !"Objective-C GC Only", i32 4 } -!3 = metadata !{ i32 1, metadata !"Objective-C Image Info Section", - metadata !"__DATA, __objc_imageinfo, regular, no_dead_strip" } -!4 = metadata !{ i32 2, metadata !"Objective-C GC Only", - metadata !{ - metadata !"Objective-C Garbage Collection", i32 2 - } -} -!llvm.module.flags = !{ !0, !1, !2, !3, !4 } -</pre> - - -</div> - </div> <!-- *********************************************************************** --> |