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| author | Duncan Sands <baldrick@free.fr> | 2009-03-11 08:08:06 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2009-03-11 08:08:06 +0000 |
| commit | e2881053c9d977cbe1176c2fdaf2a5049a0e7dad (patch) | |
| tree | 226aa64f23be1d7ea3a0dc2e5ba6cb63df21c84f /llvm/docs | |
| parent | 507202ecb79bf1da7ec2b3e854b78ce660a68012 (diff) | |
| download | bcm5719-llvm-e2881053c9d977cbe1176c2fdaf2a5049a0e7dad.tar.gz bcm5719-llvm-e2881053c9d977cbe1176c2fdaf2a5049a0e7dad.zip | |
Remove the one-definition-rule version of extern_weak
linkage: this linkage type only applies to declarations,
but ODR is only relevant to globals with definitions.
llvm-svn: 66650
Diffstat (limited to 'llvm/docs')
| -rw-r--r-- | llvm/docs/LangRef.html | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/llvm/docs/LangRef.html b/llvm/docs/LangRef.html index 6b7038dbccb..c698e8a90a9 100644 --- a/llvm/docs/LangRef.html +++ b/llvm/docs/LangRef.html @@ -554,15 +554,13 @@ All Global Variables and Functions have one of the following types of linkage: <dt><tt><b><a name="linkage_linkonce">linkonce_odr</a></b></tt>: </dt> <dt><tt><b><a name="linkage_common">common_odr</a></b></tt>: </dt> <dt><tt><b><a name="linkage_weak">weak_odr</a></b></tt>: </dt> - <dt><tt><b><a name="linkage_externweak">extern_weak_odr</a></b></tt>: </dt> <dd>Some languages allow inequivalent globals to be merged, such as two functions with different semantics. Other languages, such as <tt>C++</tt>, ensure that only equivalent globals are ever merged (the "one definition rule" - <tt>odr</tt>). Such languages can use the <tt>linkonce_odr</tt>, - <tt>common_odr</tt>, <tt>weak_odr</tt> and <tt>extern_weak_odr</tt> linkage - types to indicate that the global will only be merged with equivalent - globals. These linkage types are otherwise the same as their - non-<tt>odr</tt> versions. + <tt>common_odr</tt> and <tt>weak_odr</tt> linkage types to indicate that + the global will only be merged with equivalent globals. These linkage + types are otherwise the same as their non-<tt>odr</tt> versions. </dd> <dt><tt><b><a name="linkage_external">externally visible</a></b></tt>:</dt> @@ -606,8 +604,8 @@ preventing a collision. Since "<tt>main</tt>" and "<tt>puts</tt>" are external (i.e., lacking any linkage declarations), they are accessible outside of the current module.</p> <p>It is illegal for a function <i>declaration</i> -to have any linkage type other than "externally visible", <tt>dllimport</tt>, -<tt>extern_weak</tt> or <tt>extern_weak_odr</tt>.</p> +to have any linkage type other than "externally visible", <tt>dllimport</tt> +or <tt>extern_weak</tt>.</p> <p>Aliases can have only <tt>external</tt>, <tt>internal</tt>, <tt>weak</tt> or <tt>weak_odr</tt> linkages.</p> </div> |
