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| author | Andrew Pinski <quic_apinski@quicinc.com> | 2024-04-15 17:13:36 -0700 |
|---|---|---|
| committer | Andrew Pinski <quic_apinski@quicinc.com> | 2024-04-16 08:38:14 -0700 |
| commit | 8eddd87da2dd01c841f9742f973f65ebe0a88e71 (patch) | |
| tree | a817ceae28dca1dc5289b87094aedef2e7f83f56 | |
| parent | f949481a1f7ab973608a4ffcc0e342ab5a74e8e4 (diff) | |
| download | gcc-8eddd87da2dd01c841f9742f973f65ebe0a88e71.zip gcc-8eddd87da2dd01c841f9742f973f65ebe0a88e71.tar.gz gcc-8eddd87da2dd01c841f9742f973f65ebe0a88e71.tar.bz2 | |
Document that vector_size works with typedefs [PR92880]
This just adds a clause to make it more obvious that the vector_size
attribute extension works with typedefs.
Note this whole section needs a rewrite to be a similar format as other
extensions. But that is for another day.
gcc/ChangeLog:
PR c/92880
* doc/extend.texi (Using Vector Instructions): Add that
the base_types could be a typedef of them.
Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>
| -rw-r--r-- | gcc/doc/extend.texi | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 7b54a24..e290265 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -12901,12 +12901,13 @@ typedef int v4si __attribute__ ((vector_size (16))); @end smallexample @noindent -The @code{int} type specifies the @dfn{base type}, while the attribute specifies -the vector size for the variable, measured in bytes. For example, the -declaration above causes the compiler to set the mode for the @code{v4si} -type to be 16 bytes wide and divided into @code{int} sized units. For -a 32-bit @code{int} this means a vector of 4 units of 4 bytes, and the -corresponding mode of @code{foo} is @acronym{V4SI}. +The @code{int} type specifies the @dfn{base type} (which can be a +@code{typedef}), while the attribute specifies the vector size for the +variable, measured in bytes. For example, the declaration above causes +the compiler to set the mode for the @code{v4si} type to be 16 bytes wide +and divided into @code{int} sized units. For a 32-bit @code{int} this +means a vector of 4 units of 4 bytes, and the corresponding mode of +@code{foo} is @acronym{V4SI}. The @code{vector_size} attribute is only applicable to integral and floating scalars, although arrays, pointers, and function return values |