[IR][ARM] Add function pointer alignment to datalayout
Use this feature to fix a bug on ARM where 4 byte alignment is
incorrectly assumed.
Differential Revision: https://reviews.llvm.org/D57335
llvm-svn: 355685
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
index 86972ac..261d1d4 100644
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -2004,6 +2004,14 @@
targets.
``a:<abi>:<pref>``
This specifies the alignment for an object of aggregate type.
+``F<type><abi>``
+ This specifies the alignment for function pointers.
+ The options for ``<type>`` are:
+
+ * ``i``: The alignment of function pointers is independent of the alignment
+ of functions, and is a multiple of ``<abi>``.
+ * ``n``: The alignment of function pointers is a multiple of the explicit
+ alignment specified on the function, and is a multiple of ``<abi>``.
``m:<mangling>``
If present, specifies that llvm names are mangled in the output. Symbols
prefixed with the mangling escape character ``\01`` are passed through