extend.texi (PowerPC AltiVec Built-in Functions): Add reference to the OpenPOWER…

extend.texi (PowerPC AltiVec Built-in Functions): Add reference to the OpenPOWER 64-Bit ELF V2 ABI Specification.

2017-03-31  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* doc/extend.texi (PowerPC AltiVec Built-in Functions):	Add
	reference to the OpenPOWER 64-Bit ELF V2 ABI Specification.

From-SVN: r246617

gcc/ChangeLog

+2017-03-31  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
+
+	* doc/extend.texi (PowerPC AltiVec Built-in Functions):	Add
+	reference to the OpenPOWER 64-Bit ELF V2 ABI Specification.
+
 2017-03-31  Matthew Fortune  <matthew.fortune@imgtec.com>
 
 	* config/mips/mips-msa.md (msa_vec_extract_<msafmt_f>): Update

gcc/doc/extend.texi

@@ -15539,6 +15539,15 @@ Internally, GCC uses built-in functions to achieve the functionality in
 the aforementioned header file, but they are not supported and are
 subject to change without notice.
 
+GCC complies with the OpenPOWER 64-Bit ELF V2 ABI Specification,
+which may be found at
+@uref{http://openpowerfoundation.org/wp-content/uploads/resources/leabi-prd/content/index.html}.
+Appendix A of this document lists the vector API interfaces that must be
+provided by compliant compilers.  Programmers should preferentially use
+the interfaces described therein.  However, historically GCC has provided
+additional interfaces for access to vector instructions.  These are
+described briefly below.
+
 The following interfaces are supported for the generic and specific
 AltiVec operations and the AltiVec predicates.  In cases where there
 is a direct mapping between generic and specific operations, only the