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Fully specify the type of the llvm.va* intrinsics. This helps resolve

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Pr1093


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33009 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-01-08 07:55:15 +00:00
parent c0974a1344
commit b75137d1f4
1 changed files with 15 additions and 8 deletions

23
docs/LangRef.html

@ -3519,18 +3519,20 @@ used.</p>
define i32 %test(i32 %X, ...) {
; Initialize variable argument processing
%ap = alloca i8 *
call void %<a href="#i_va_start">llvm.va_start</a>(i8 ** %ap)
%ap2 = bitcast i8** %ap to i8*
call void %<a href="#i_va_start">llvm.va_start</a>(i8* %ap2)
; Read a single integer argument
%tmp = va_arg i8 ** %ap, i32
; Demonstrate usage of llvm.va_copy and llvm.va_end
%aq = alloca i8 *
call void %<a href="#i_va_copy">llvm.va_copy</a>(i8 ** %aq, i8 ** %ap)
call void %<a href="#i_va_end">llvm.va_end</a>(i8 ** %aq)
%aq2 = bitcast i8** %aq to i8*
call void %<a href="#i_va_copy">llvm.va_copy</a>(i8 *%aq2, i8* %ap2)
call void %<a href="#i_va_end">llvm.va_end</a>(i8* %aq2)
; Stop processing of arguments.
call void %<a href="#i_va_end">llvm.va_end</a>(i8 ** %ap)
call void %<a href="#i_va_end">llvm.va_end</a>(i8* %ap2)
ret i32 %tmp
}
</pre>
@ -3544,7 +3546,7 @@ define i32 %test(i32 %X, ...) {
<div class="doc_text">
<h5>Syntax:</h5>
<pre> declare void %llvm.va_start(&lt;va_list&gt;* &lt;arglist&gt;)<br></pre>
<pre> declare void %llvm.va_start(i8* &lt;arglist&gt;)<br></pre>
<h5>Overview:</h5>
<P>The '<tt>llvm.va_start</tt>' intrinsic initializes
<tt>*&lt;arglist&gt;</tt> for subsequent use by <tt><a
@ -3572,19 +3574,25 @@ last argument of the function, the compiler can figure that out.</p>
<div class="doc_text">
<h5>Syntax:</h5>
<pre> declare void %llvm.va_end(&lt;va_list*&gt; &lt;arglist&gt;)<br></pre>
<pre> declare void %llvm.va_end(i8* &lt;arglist&gt;)<br></pre>
<h5>Overview:</h5>
<p>The '<tt>llvm.va_end</tt>' intrinsic destroys <tt>&lt;arglist&gt;</tt>
which has been initialized previously with <tt><a href="#i_va_start">llvm.va_start</a></tt>
or <tt><a href="#i_va_copy">llvm.va_copy</a></tt>.</p>
<h5>Arguments:</h5>
<p>The argument is a <tt>va_list</tt> to destroy.</p>
<h5>Semantics:</h5>
<p>The '<tt>llvm.va_end</tt>' intrinsic works just like the <tt>va_end</tt>
macro available in C. In a target-dependent way, it destroys the <tt>va_list</tt>.
Calls to <a href="#i_va_start"><tt>llvm.va_start</tt></a> and <a
href="#i_va_copy"><tt>llvm.va_copy</tt></a> must be matched exactly
with calls to <tt>llvm.va_end</tt>.</p>
</div>
<!-- _______________________________________________________________________ -->
@ -3597,8 +3605,7 @@ with calls to <tt>llvm.va_end</tt>.</p>
<h5>Syntax:</h5>
<pre>
declare void %llvm.va_copy(&lt;va_list&gt;* &lt;destarglist&gt;,
&lt;va_list&gt;* &lt;srcarglist&gt;)
declare void %llvm.va_copy(i8* &lt;destarglist&gt;, i8* &lt;srcarglist&gt;)
</pre>
<h5>Overview:</h5>