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| author | Matthew Wahab <matthew.wahab@arm.com> | 2016-07-04 08:17:57 +0000 |
|---|---|---|
| committer | Jiong Wang <jiwang@gcc.gnu.org> | 2016-07-04 08:17:57 +0000 |
| commit | c61465bda5ed50a1bf664211515436f884e6fa66 (patch) | |
| tree | f3d89dc5d03ffde41530bf6c68165422b8b4cb83 /gcc/doc/invoke.texi | |
| parent | 793350758c5c88b29b1c9459f3b3fb1bb00bc0c0 (diff) | |
| download | gcc-c61465bda5ed50a1bf664211515436f884e6fa66.zip gcc-c61465bda5ed50a1bf664211515436f884e6fa66.tar.gz gcc-c61465bda5ed50a1bf664211515436f884e6fa66.tar.bz2 | |
[AArch64] ARMv8.2 command line and feature macros support
* config/aarch64/aarch64-arches.def: Add "armv8.2-a".
* config/aarch64/aarch64.h (AARCH64_FL_V8_2): New.
(AARCH64_FL_F16): New.
(AARCH64_FL_FOR_ARCH8_2): New.
(AARCH64_ISA_8_2): New.
(AARCH64_ISA_F16): New.
(TARGET_FP_F16INST): New.
(TARGET_SIMD_F16INST): New.
* config/aarch64/aarch64-option-extensions.def ("fp16"): New entry.
("fp"): Disabling "fp" also disables "fp16".
* config/aarch64/aarch64-c.c (arch64_update_cpp_builtins): Conditionally define
__ARM_FEATURE_FP16_SCALAR_ARITHMETIC and __ARM_FEATURE_FP16_VECTOR_ARITHMETIC.
* doc/invoke.texi (AArch64 Options): Document "armv8.2-a" and "fp16".
Co-Authored-By: Jiong Wang <jiong.wang@arm.com>
From-SVN: r237956
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 4f24dae..1e0337d 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -13101,7 +13101,10 @@ more feature modifiers. This option has the form @option{-march=@var{arch}@r{@{}+@r{[}no@r{]}@var{feature}@r{@}*}}. The permissible values for @var{arch} are @samp{armv8-a}, -@samp{armv8.1-a} or @var{native}. +@samp{armv8.1-a}, @samp{armv8.2-a} or @var{native}. + +The value @samp{armv8.2-a} implies @samp{armv8.1-a} and enables compiler +support for the ARMv8.2-A architecture extensions. The value @samp{armv8.1-a} implies @samp{armv8-a} and enables compiler support for the ARMv8.1 architecture extension. In particular, it @@ -13208,6 +13211,8 @@ instructions. This is on by default for all possible values for options @item lse Enable Large System Extension instructions. This is on by default for @option{-march=armv8.1-a}. +@item fp16 +Enable FP16 extension. This also enables floating-point instructions. @end table |