[PATCH v2 9/16][docs] Add some missing test directive documentaion.

[Tamar Christina]

Hi All,

This adds some documentation for some test directives that are missing.

Bootstrapped Regtested on aarch64-none-linux-gnu and no issues.

Ok for master?

Thanks,
Tamar

gcc/ChangeLog:

        * doc/sourcebuild.texi (vect_complex_rot_<type>,
        arm_v8_3a_complex_neon_ok, arm_v8_3a_complex_neon_hw): New.

-- 

diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
index 65b2e552b74becdbc5474ba5ac387a4a0296e341..3abd8f631cb0234076641e399f6f00768b38ebee 100644
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -1671,6 +1671,10 @@ Target supports a vector dot-product of @code{signed short}.
 @item vect_udot_hi
 Target supports a vector dot-product of @code{unsigned short}.
 
+@item vect_complex_rot_@var{n}
+Target supports a vector complex addition and complex fma of mode @var{N}.
+Possible values of @var{n} are @code{hf}, @code{sf}, @code{df}.
+
 @item vect_pack_trunc
 Target supports a vector demotion (packing) of @code{short} to @code{char}
 and from @code{int} to @code{short} using modulo arithmetic.
@@ -1941,6 +1945,16 @@ ARM target supports executing instructions from ARMv8.2-A with the Dot
 Product extension. Some multilibs may be incompatible with these options.
 Implies arm_v8_2a_dotprod_neon_ok.
 
+@item arm_v8_3a_complex_neon_ok
+@anchor{arm_v8_3a_complex_neon_ok}
+ARM target supports options to generate complex number arithmetic instructions
+from ARMv8.3-A.  Some multilibs may be incompatible with these options.
+
+@item arm_v8_3a_complex_neon_hw
+ARM target supports executing complex arithmetic instructions from ARMv8.3-A.
+Some multilibs may be incompatible with these options.
+Implies arm_v8_3a_complex_neon_ok.
+
 @item arm_fp16fml_neon_ok
 @anchor{arm_fp16fml_neon_ok}
 ARM target supports extensions to generate the @code{VFMAL} and @code{VFMLS}