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Cleanup the formatting. 

llvm-svn: 144053
This commit is contained in:
Bill Wendling 2011-11-08 00:32:45 +00:00
parent 91b56e0390
commit 1654bb22ca
1 changed files with 37 additions and 22 deletions
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llvm/docs/LangRef.html
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@ -3023,26 +3023,29 @@ href="#linkage_appending">appending linkage</a>. This array contains a list of
pointers to global variables and functions which may optionally have a pointer
cast formed of bitcast or getelementptr. For example, a legal use of it is:</p>
<div class="doc_code">
<pre>
@X = global i8 4
@Y = global i32 123
@X = global i8 4
@Y = global i32 123
@llvm.used = appending global [2 x i8*] [
i8* @X,
i8* bitcast (i32* @Y to i8*)
], section "llvm.metadata"
@llvm.used = appending global [2 x i8*] [
i8* @X,
i8* bitcast (i32* @Y to i8*)
], section "llvm.metadata"
</pre>
</div>
<p>If a global variable appears in the <tt>@llvm.used</tt> list, then the
compiler, assembler, and linker are required to treat the symbol as if there is
a reference to the global that it cannot see. For example, if a variable has
internal linkage and no references other than that from the <tt>@llvm.used</tt>
list, it cannot be deleted. This is commonly used to represent references from
inline asms and other things the compiler cannot "see", and corresponds to
"attribute((used))" in GNU C.</p>
compiler, assembler, and linker are required to treat the symbol as if there
is a reference to the global that it cannot see. For example, if a variable
has internal linkage and no references other than that from
the <tt>@llvm.used</tt> list, it cannot be deleted. This is commonly used to
represent references from inline asms and other things the compiler cannot
"see", and corresponds to "<tt>attribute((used))</tt>" in GNU C.</p>
<p>On some targets, the code generator must emit a directive to the assembler or
object file to prevent the assembler and linker from molesting the symbol.</p>
object file to prevent the assembler and linker from molesting the
symbol.</p>
</div>
@ -3056,13 +3059,13 @@ object file to prevent the assembler and linker from molesting the symbol.</p>
<div>
<p>The <tt>@llvm.compiler.used</tt> directive is the same as the
<tt>@llvm.used</tt> directive, except that it only prevents the compiler from
touching the symbol. On targets that support it, this allows an intelligent
linker to optimize references to the symbol without being impeded as it would be
by <tt>@llvm.used</tt>.</p>
<tt>@llvm.used</tt> directive, except that it only prevents the compiler from
touching the symbol. On targets that support it, this allows an intelligent
linker to optimize references to the symbol without being impeded as it would
be by <tt>@llvm.used</tt>.</p>
<p>This is a rare construct that should only be used in rare circumstances, and
should not be exposed to source languages.</p>
should not be exposed to source languages.</p>
</div>
@ -3072,12 +3075,19 @@ should not be exposed to source languages.</p>
</h3>
<div>
<div class="doc_code">
<pre>
%0 = type { i32, void ()* }
@llvm.global_ctors = appending global [1 x %0] [%0 { i32 65535, void ()* @ctor }]
</pre>
<p>The <tt>@llvm.global_ctors</tt> array contains a list of constructor functions and associated priorities. The functions referenced by this array will be called in ascending order of priority (i.e. lowest first) when the module is loaded. The order of functions with the same priority is not defined.
</p>
</div>
<p>The <tt>@llvm.global_ctors</tt> array contains a list of constructor
functions and associated priorities. The functions referenced by this array
will be called in ascending order of priority (i.e. lowest first) when the
module is loaded. The order of functions with the same priority is not
defined.</p>
</div>
@ -3087,13 +3097,18 @@ should not be exposed to source languages.</p>
</h3>
<div>
<div class="doc_code">
<pre>
%0 = type { i32, void ()* }
@llvm.global_dtors = appending global [1 x %0] [%0 { i32 65535, void ()* @dtor }]
</pre>
</div>
<p>The <tt>@llvm.global_dtors</tt> array contains a list of destructor functions and associated priorities. The functions referenced by this array will be called in descending order of priority (i.e. highest first) when the module is loaded. The order of functions with the same priority is not defined.
</p>
<p>The <tt>@llvm.global_dtors</tt> array contains a list of destructor functions
and associated priorities. The functions referenced by this array will be
called in descending order of priority (i.e. highest first) when the module
is loaded. The order of functions with the same priority is not defined.</p>
</div>