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extend.texi (PowerPC Altivec/VSX Built-in Functions): Describe when a typedef name can be used as the type specifier for a vector type...

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2018-12-18  Bill Schmidt  <wschmidt@linux.ibm.com>

	* doc/extend.texi (PowerPC Altivec/VSX Built-in Functions):
	Describe when a typedef name can be used as the type specifier for
	a vector type, and when it cannot.

From-SVN: r267232
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Bill Schmidt 2018-12-18 13:46:10 +00:00 committed by William Schmidt
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@ -1,3 +1,9 @@
2018-12-18 Bill Schmidt <wschmidt@linux.ibm.com>
* doc/extend.texi (PowerPC Altivec/VSX Built-in Functions):
Describe when a typedef name can be used as the type specifier for
a vector type, and when it cannot.
2018-12-18 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* config/msp430/msp430.h: Define TARGET_VTABLE_ENTRY_ALIGN.

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gcc/doc/extend.texi
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@ -16616,7 +16616,30 @@ disabled. To use them, you must include @code{<altivec.h>} instead.
@item
GCC allows using a @code{typedef} name as the type specifier for a
vector type.
vector type, but only under the following circumstances:
@itemize @bullet
@item
When using @code{__vector} instead of @code{vector}; for example,
@smallexample
typedef signed short int16;
__vector int16 data;
@end smallexample
@item
When using @code{vector} in keyword-and-predefine mode; for example,
@smallexample
typedef signed short int16;
vector int16 data;
@end smallexample
Note that keyword-and-predefine mode is enabled by disabling GNU
extensions (e.g., by using @code{-std=c11}) and including
@code{<altivec.h>}.
@end itemize
@item
For C, overloaded functions are implemented with macros so the following