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| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2014-06-10 09:50:22 +0000 |
|---|---|---|
| committer | Kyrylo Tkachov <ktkachov@gcc.gnu.org> | 2014-06-10 09:50:22 +0000 |
| commit | 87ee52efe73734c055ac647aa68e28f7c398c479 (patch) | |
| tree | 100375ebbf3addcdb813cbf1c7fc2a1bce4f83dd /gcc/doc | |
| parent | 35fa894ae37dc5efdaf05db965e65a0621f5beee (diff) | |
| download | gcc-87ee52efe73734c055ac647aa68e28f7c398c479.zip gcc-87ee52efe73734c055ac647aa68e28f7c398c479.tar.gz gcc-87ee52efe73734c055ac647aa68e28f7c398c479.tar.bz2 | |
[ARM][doc] Improve description of AArch32 CRC32 intrinsics.
* doc/arm-acle-intrinsics.texi: Specify when CRC32 intrinsics are
available.
Simplify description of __crc32d and __crc32cd intrinsics.
* doc/extend.texi (ARM ACLE Intrinsics): Remove comment about CRC32
availability.
From-SVN: r211402
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/arm-acle-intrinsics.texi | 10 | ||||
| -rw-r--r-- | gcc/doc/extend.texi | 3 |
2 files changed, 6 insertions, 7 deletions
diff --git a/gcc/doc/arm-acle-intrinsics.texi b/gcc/doc/arm-acle-intrinsics.texi index e68f4cd..8c5523e 100644 --- a/gcc/doc/arm-acle-intrinsics.texi +++ b/gcc/doc/arm-acle-intrinsics.texi @@ -4,6 +4,10 @@ @subsubsection CRC32 intrinsics +These intrinsics are available when the CRC32 architecture extension is +specified, e.g. when the @option{-march=armv8-a+crc} switch is used, or when +the target processor specified with @option{-mcpu} supports it. + @itemize @bullet @item uint32_t __crc32b (uint32_t, uint8_t) @*@emph{Form of expected instruction(s):} @code{crc32b @var{r0}, @var{r0}, @var{r0}} @@ -25,8 +29,7 @@ @itemize @bullet @item uint32_t __crc32d (uint32_t, uint64_t) @*@emph{Form of expected instruction(s):} Two @code{crc32w @var{r0}, @var{r0}, @var{r0}} -instructions for AArch32. One @code{crc32w @var{w0}, @var{w0}, @var{x0}} instruction for -AArch64. +instructions. @end itemize @itemize @bullet @@ -50,6 +53,5 @@ AArch64. @itemize @bullet @item uint32_t __crc32cd (uint32_t, uint64_t) @*@emph{Form of expected instruction(s):} Two @code{crc32cw @var{r0}, @var{r0}, @var{r0}} -instructions for AArch32. One @code{crc32cw @var{w0}, @var{w0}, @var{x0}} instruction for -AArch64. +instructions. @end itemize diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 42db985..a79dbbf 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -10516,9 +10516,6 @@ when the @option{-mfpu=neon} switch is used: @node ARM ACLE Intrinsics @subsection ARM ACLE Intrinsics -These built-in intrinsics for the ARMv8-A CRC32 extension are available when -the @option{-march=armv8-a+crc} switch is used: - @include arm-acle-intrinsics.texi @node ARM Floating Point Status and Control Intrinsics |