FreeChainXenon/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

re PR target/27544 (attribute altivec is not documented)

Browse source 
PR target/27544
        * doc/extend.texi (PowerPC Variable Attributes): Mention altivec.
        (PowerPC Type Attributes): New.

From-SVN: r116478
This commit is contained in:
David Edelsohn 2006-08-26 21:36:39 +00:00 • committed by David Edelsohn
parent ec6aa5008e
commit 63d0dca480
2 changed files with 38 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
gcc/ChangeLog
View file

@ -1,3 +1,9 @@
2006-08-26 David Edelsohn <edelsohn@gnu.org>
PR target/27544
* doc/extend.texi (PowerPC Variable Attributes): Mention altivec.
(PowerPC Type Attributes): New.
2006-08-26 Bob Wilson <bob.wilson@acm.org>
* config/xtensa/xtensa.c (function_arg_boundary): New.

37
gcc/doc/extend.texi
View file

@ -3374,11 +3374,14 @@ Here, @code{t5} will take up 2 bytes.
@subsection PowerPC Variable Attributes
Two attributes are currently defined for PowerPC configurations:
@code{ms_struct} and @code{gcc_struct}.
Three attributes currently are defined for PowerPC configurations:
@code{altivec}, @code{ms_struct} and @code{gcc_struct}.
For full documentation of these attributes please see the documentation
in the @xref{i386 Variable Attributes}, section.
For full documentation of the struct attributes please see the
documentation in the @xref{i386 Variable Attributes}, section.
For documentation of @code{altivec} attribute please see the
documentation in the @xref{PowerPC Type Attributes}, section.
@subsection Xstormy16 Variable Attributes
@ -3674,7 +3677,6 @@ declaration, the above program would abort when compiled with
above in recent GCC versions.
@item visibility
In C++, attribute visibility (@pxref{Function Attributes}) can also be
applied to class, struct, union and enum types. Unlike other type
attributes, the attribute must appear between the initial keyword and
@ -3710,6 +3712,7 @@ virtual table for @code{C} is not exported. (You can use
@code{__attribute__} instead of @code{__declspec} if you prefer, but
most Symbian OS code uses @code{__declspec}.)
@anchor{i386 Type Attributes}
@subsection i386 Type Attributes
Two attributes are currently defined for i386 configurations:
@ -3735,6 +3738,30 @@ To specify multiple attributes, separate them by commas within the
double parentheses: for example, @samp{__attribute__ ((aligned (16),
packed))}.
@anchor{PowerPC Type Attributes}
@subsection PowerPC Type Attributes
Three attributes currently are defined for PowerPC configurations:
@code{altivec}, @code{ms_struct} and @code{gcc_struct}.
For full documentation of the struct attributes please see the
documentation in the @xref{i386 Type Attributes}, section.
The @code{altivec} attribute allows one to declare AltiVec vector data
types supported by the AltiVec Programming Interface Manual. The
attribute requires an argument to specify one of three vector types:
@code{vector__}, @code{pixel__} (always followed by unsigned short),
and @code{bool__} (always followed by unsigned).
@smallexample
__attribute__((altivec(vector__)))
__attribute__((altivec(pixel__))) unsigned short
__attribute__((altivec(bool__))) unsigned
@end smallexample
These attributes mainly are intended to support the @code{__vector},
@code{__pixel}, and @code{__bool} AltiVec keywords.
@node Inline
@section An Inline Function is As Fast As a Macro
@cindex inline functions