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| author | Matthew Wahab <matthew.wahab@arm.com> | 2016-06-29 12:32:08 +0000 |
|---|---|---|
| committer | Matthew Wahab <mwahab@gcc.gnu.org> | 2016-06-29 12:32:08 +0000 |
| commit | 7fe43755428bb289b9d52510973feb3ced77e0ae (patch) | |
| tree | 781640718bb1bc4327eefe38e013dab9a4946865 /gcc/doc/sourcebuild.texi | |
| parent | 264d951ae8c99ea72633487dc3404e8d2a4a02d8 (diff) | |
| download | gcc-7fe43755428bb289b9d52510973feb3ced77e0ae.zip gcc-7fe43755428bb289b9d52510973feb3ced77e0ae.tar.gz gcc-7fe43755428bb289b9d52510973feb3ced77e0ae.tar.bz2 | |
[Testsuite] Selectors and options directives for ARM VFP FP16 support.
gcc/
* doc/sourcebuild.texi (Effective-Target keywords): Add entries
for arm_fp16_ok and arm_fp16_hw.
(Add Options): Add entries for arm_fp16, arm_fp16_ieee and
arm_fp16_alternative.
testsuite/
* lib/target-supports.exp (add_options_for arm_fp16): Reword
comment.
(add_options_for_arm_fp16_ieee): New.
(add_options_for_arm_fp16_alternative): New.
(effective_target_arm_fp16_ok_nocache): Add to comment. Fix a
long-line.
(effective_target_arm_fp16_hw): New.
From-SVN: r237847
Diffstat (limited to 'gcc/doc/sourcebuild.texi')
| -rw-r--r-- | gcc/doc/sourcebuild.texi | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi index 95a781d..23d3c3f 100644 --- a/gcc/doc/sourcebuild.texi +++ b/gcc/doc/sourcebuild.texi @@ -1555,6 +1555,16 @@ options. Some multilibs may be incompatible with these options. ARM Target supports @code{-mfpu=neon-vfpv4 -mfloat-abi=softfp} or compatible options. Some multilibs may be incompatible with these options. +@item arm_fp16_ok +@anchor{arm_fp16_ok} +Target supports options to generate VFP half-precision floating-point +instructions. Some multilibs may be incompatible with these +options. This test is valid for ARM only. + +@item arm_fp16_hw +Target supports executing VFP half-precision floating-point +instructions. This test is valid for ARM only. + @item arm_neon_fp16_ok @anchor{arm_neon_fp16_ok} ARM Target supports @code{-mfpu=neon-fp16 -mfloat-abi=softfp} or compatible @@ -2075,6 +2085,28 @@ NEON support. Only ARM targets support this feature, and only then in certain modes; see the @ref{arm_neon_ok,,arm_neon_ok effective target keyword}. +@item arm_fp16 +VFP half-precision floating point support. This does not select the +FP16 format; for that, use @ref{arm_fp16_ieee,,arm_fp16_ieee} or +@ref{arm_fp16_alternative,,arm_fp16_alternative} instead. This +feature is only supported by ARM targets and then only in certain +modes; see the @ref{arm_fp16_ok,,arm_fp16_ok effective target +keyword}. + +@item arm_fp16_ieee +@anchor{arm_fp16_ieee} +ARM IEEE 754-2008 format VFP half-precision floating point support. +This feature is only supported by ARM targets and then only in certain +modes; see the @ref{arm_fp16_ok,,arm_fp16_ok effective target +keyword}. + +@item arm_fp16_alternative +@anchor{arm_fp16_alternative} +ARM Alternative format VFP half-precision floating point support. +This feature is only supported by ARM targets and then only in certain +modes; see the @ref{arm_fp16_ok,,arm_fp16_ok effective target +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 |