On 08/09/15 15:00, Alan Lawrence wrote:
Original message here: https://gcc.gnu.org/ml/gcc-patches/2015-07/msg02363.html
On 28/07/15 12:27, Alan Lawrence wrote:
This documents the change to arm_neon_fp16_ok in the first patch; the addition
of arm_neon_fp16_hw_ok in the last patch; and corrects a cross-reference.
(I tried using an @ref instead of "Implies previous." but the page ref looked
very out-of-place in PDF when I am referring to the previous item in the list!)
The change to arm_neon_fp16_ok was committed in r227033 (as per
https://gcc.gnu.org/ml/gcc-patches/2015-07/msg02470.html).
I've now updated this patch with the change to arm_neon_fp16_hw (rather than
_hw_ok), as per https://gcc.gnu.org/ml/gcc-patches/2015-09/msg00488.html.
OK for trunk?
Ok.
Thanks,
Kyrill
Thanks, Alan
gcc/ChangeLog:
* doc/sourcebuild.texi (arm_neon_fp16): Correct cross-reference.
(arm_neon_fp16_ok): Document adding of -mfp16-format=ieee flag.
(arm_neon_fp16_hw): New.
---
gcc/doc/sourcebuild.texi | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
index 7aa9c9d..5dc7c81 100644
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -1549,7 +1549,12 @@ options. Some multilibs may be incompatible with these
options.
@item arm_neon_fp16_ok
@anchor{arm_neon_fp16_ok}
ARM Target supports @code{-mfpu=neon-fp16 -mfloat-abi=softfp} or compatible
-options. Some multilibs may be incompatible with these options.
+options, including @code{-mfp16-format=ieee} if necessary to obtain the
+@code{__fp16} type. Some multilibs may be incompatible with these options.
+
+@item arm_neon_fp16_hw
+Test system supports executing Neon half-precision float instructions.
+(Implies previous.)
@item arm_thumb1_ok
ARM target generates Thumb-1 code for @code{-mthumb}.
@@ -2035,7 +2040,7 @@ keyword}.
@item arm_neon_fp16
NEON and half-precision floating point support. Only ARM targets
support this feature, and only then in certain modes; see
-the @ref{arm_neon_ok,,arm_neon_fp16_ok effective target keyword}.
+the @ref{arm_neon_fp16_ok,,arm_neon_fp16_ok effective target keyword}.
@item arm_vfp3
arm vfp3 floating point support; see
