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Diffstat (limited to 'docs/LangRef.html')
| -rw-r--r-- | docs/LangRef.html | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/docs/LangRef.html b/docs/LangRef.html index 21144125b0..2121fc6740 100644 --- a/docs/LangRef.html +++ b/docs/LangRef.html @@ -846,6 +846,10 @@ define i32 @main() { <i>; i32()* </i> region of memory, and all memory objects in LLVM are accessed through pointers.</p> +<p>Global variables can be marked with <tt>unnamed_addr</tt> which indicates + that the address is not significant, only the content. Constants marked + like this can be merged if they have the same content.</p> + <p>A global variable may be declared to reside in a target-specific numbered address space. For targets that support them, address spaces may affect how optimizations are performed and/or what target instructions are used to @@ -885,7 +889,8 @@ define i32 @main() { <i>; i32()* </i> <p>LLVM function definitions consist of the "<tt>define</tt>" keyword, an optional <a href="#linkage">linkage type</a>, an optional <a href="#visibility">visibility style</a>, an optional - <a href="#callingconv">calling convention</a>, a return type, an optional + <a href="#callingconv">calling convention</a>, + an optional <tt>unnamed_addr</tt> attribute, a return type, an optional <a href="#paramattrs">parameter attribute</a> for the return type, a function name, a (possibly empty) argument list (each with optional <a href="#paramattrs">parameter attributes</a>), optional @@ -896,7 +901,8 @@ define i32 @main() { <i>; i32()* </i> <p>LLVM function declarations consist of the "<tt>declare</tt>" keyword, an optional <a href="#linkage">linkage type</a>, an optional <a href="#visibility">visibility style</a>, an optional - <a href="#callingconv">calling convention</a>, a return type, an optional + <a href="#callingconv">calling convention</a>, + an optional <tt>unnamed_addr</tt> attribute, a return type, an optional <a href="#paramattrs">parameter attribute</a> for the return type, a function name, a possibly empty list of arguments, an optional alignment, and an optional <a href="#gc">garbage collector name</a>.</p> @@ -922,6 +928,9 @@ define i32 @main() { <i>; i32()* </i> specified, the function is forced to have at least that much alignment. All alignments must be a power of 2.</p> +<p>If the <tt>unnamed_addr</tt> attribute is given, the address is know to not + be significant and two identical functions can be merged</p>. + <h5>Syntax:</h5> <pre class="doc_code"> define [<a href="#linkage">linkage</a>] [<a href="#visibility">visibility</a>] |