re PR target/1078 (Problems with attributes documentation)

2016-01-07  Sandra Loosemore <sandra@codesourcery.com>

	PR 1078
	gcc/
	* doc/extend.texi (Nvidia PDX Function Attributes): New section.

From-SVN: r232136

gcc/ChangeLog

+2016-01-07  Sandra Loosemore <sandra@codesourcery.com>
+
+	PR 1078
+	* doc/extend.texi (Nvidia PDX Function Attributes): New section.
+
 2016-01-07  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR target/69171

gcc/doc/extend.texi

@@ -2271,6 +2271,7 @@ GCC plugins may provide their own attributes.
 * MSP430 Function Attributes::
 * NDS32 Function Attributes::
 * Nios II Function Attributes::
+* Nvidia PTX Function Attributes::
 * PowerPC Function Attributes::
 * RL78 Function Attributes::
 * RX Function Attributes::
@@ -4633,6 +4634,22 @@ named @var{name}.
 @end table
 @end table
 
+@node Nvidia PTX Function Attributes
+@subsection Nvidia PTX Function Attributes
+
+These function attributes are supported by the Nvidia PTX back end:
+
+@table @code
+@item kernel
+@cindex @code{kernel} attribute, Nvidia PTX
+This attribute indicates that the corresponding function should be compiled
+as a kernel function, which can be invoked from the host via the CUDA RT 
+library.
+By default functions are only callable only from other PTX functions.
+
+Kernel functions must have @code{void} return type.
+@end table
+
 @node PowerPC Function Attributes
 @subsection PowerPC Function Attributes