[PATCH] rs6000, Fix header comment for intrinsic function

[Carl Love]

GCC maintainers:

The following is a trivial patch to fix a comment describing the
intrinsic function _mm_movemask_epi8.  The comment was expanded to
clarify the layout of the returned result. 

The patch does not make any functional changes.

Please let me know if the patch is OK for mainline and backporting as
appropriate.

Thanks.

                     Carl Love
-------------------------------------------
rs6000, Fix header comment for intrinsic function _mm_movemask_epi8

gcc/ChangeLog

2020-04-22  Carl Love  <cel@us.ibm.com>

	* config/rs6000/emmintrin.h (_mm_movemask_epi8): Fix comment for the
	function.

Signed-off-by: Carl Love <carll@us.ibm.com>
---
 gcc/config/rs6000/emmintrin.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gcc/config/rs6000/emmintrin.h b/gcc/config/rs6000/emmintrin.h
index 2462cf5bdac..0872a75c0de 100644
--- a/gcc/config/rs6000/emmintrin.h
+++ b/gcc/config/rs6000/emmintrin.h
@@ -2033,7 +2033,9 @@ _mm_min_epu8 (__m128i __A, __m128i __B)
 #ifdef _ARCH_PWR8
 /* Intrinsic functions that require PowerISA 2.07 minimum.  */
 
-/* Creates a 4-bit mask from the most significant bits of the SPFP values.  */
+/* Creates a 16-bit mask from the most significant bits of the sixteen 8-bit
+   values.  The 16-bit result is placed in bits[48:63], bits [0:47] and
+   bits [64:127] are  set to zero.  */
 extern __inline int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
 _mm_movemask_epi8 (__m128i __A)
 {
-- 
2.17.1