+2006-05-03 Julian Brown <julian@codesourcery.com>
+
+ * gas/doc/c-arm.texi: Add documentation for .dn/.qn directives.
+
2006-05-03 Paul Brook <paul@codesourcery.com>
* bfd/elf32-arm.c (elf32_arm_reloc_map): Add MOVW and MOVT relocs.
@cindex @code{unreq} directive, ARM
@item .unreq @var{alias-name}
This undefines a register alias which was previously defined using the
-@code{req} directive. For example:
+@code{req}, @code{dn} or @code{qn} directives. For example:
@smallexample
foo .req r0
be used to delete builtin in register name aliases (eg 'r0'). This
should only be done if it is really necessary.
+@cindex @code{dn} and @code{qn} directives, ARM
+@item @var{name} .dn @var{register name} [@var{.type}] [@var{[index]}]
+@item @var{name} .qn @var{register name} [@var{.type}] [@var{[index]}]
+
+The @code{dn} and @code{qn} are used to create typed and/or indexed
+register aliases for use in Advanced SIMD Extension (Neon) instructions.
+The former should be used to create aliases of double-precision registers,
+and the latter to create aliases of quad-precision registers.
+
+If these directives are used to create typed aliases, those aliases can
+be used in Neon instructions instead of writing types after the mnemonic
+or after each operand. For example:
+
+@smallexample
+ x .dn d2.f32
+ y .dn d3.f32
+ z .dn d4.f32[1]
+ vmul x,y,z
+@end smallexample
+
+This is equivalent to writing the following:
+
+@smallexample
+ vmul.f32 d2,d3,d4[1]
+@end smallexample
+
+Aliases created using @code{dn} or @code{qn} can be destroyed using
+@code{unreq}.
+
@cindex @code{code} directive, ARM
@item .code @code{[16|32]}
This directive selects the instruction set being generated. The value 16