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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/LangRef.html | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/docs/LangRef.html b/docs/LangRef.html index 9c6a6d91e6..6315993fdf 100644 --- a/docs/LangRef.html +++ b/docs/LangRef.html @@ -558,10 +558,17 @@ define i32 @main() { <i>; i32()* </i> <dt><tt><b><a name="linkage_linkonce">linkonce</a></b></tt></dt> <dd>Globals with "<tt>linkonce</tt>" linkage are merged with other globals of - the same name when linkage occurs. This is typically used to implement - inline functions, templates, or other code which must be generated in each - translation unit that uses it. Unreferenced <tt>linkonce</tt> globals are - allowed to be discarded.</dd> + the same name when linkage occurs. This can be used to implement + some forms of inline functions, templates, or other code which must be + generated in each translation unit that uses it, but where the body may + be overridden with a more definitive definition later. Unreferenced + <tt>linkonce</tt> globals are allowed to be discarded. Note that + <tt>linkonce</tt> linkage does not actually allow the optimizer to + inline the body of this function into callers because it doesn't know if + this definition of the function is the definitive definition within the + program or whether it will be overridden by a stronger definition. + To enable inlining and other optimizations, use "<tt>linkonce_odr</tt>" + linkage.</dd> <dt><tt><b><a name="linkage_weak">weak</a></b></tt></dt> <dd>"<tt>weak</tt>" linkage has the same merging semantics as |