rs6000-c: The return type of the following built-in functions was implemented as...

rs6000-c: The return type of the following built-in functions was implemented as int not...

gcc/ChangeLog:

2017-06-07  Carl Love  <cel@us.ibm.com>

	* config/rs6000/rs6000-c: The return type of the following
	built-in functions was implemented as int not long long.  Fix sign
	of return value for the unsigned version of vec_mulo and vec_mule.
	vector unsigned long long vec_bperm (vector unsigned long long,
	                                     vector unsigned char)
	vector signed long long vec_mule (vector signed int,
	                                  vector signed int)
	vector unsigned long long vec_mule (vector unsigned int,
	                                    vector unsigned int)
	vector signed long long vec_mulo (vector signed int,
	                                  vector signed int)
	vector unsigned long long vec_mulo (vector unsigned int,
	                                    vector unsigned int)
	* doc/extend.texi: Fix the documentation for the built-in
	functions.

gcc/testsuite/ChangeLog:

2017-06-07  Carl Love  <cel@us.ibm.com>
	* gcc.target/powerpc/builtins-3.c: Fix vec_mule, vec_mulo test cases.
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From-SVN: r248998