rs6000-builtin.def: Change NEG macro expansions from BU_ALTIVEC_A to BU_P8V_AV_1...

rs6000-builtin.def: Change NEG macro expansions from BU_ALTIVEC_A to BU_P8V_AV_1 and...

gcc/ChangeLog:

2018-02-19  Carl Love  <cel@us.ibm.com>

	* config/rs6000/rs6000-builtin.def: Change NEG macro expansions from
	BU_ALTIVEC_A to BU_P8V_AV_1 and BU_ALTIVEC_OVERLOAD_1 to
	BU_P8V_OVERLOAD_1.
	* config/rs6000/rs6000-c.c: Change ALTIVEC_BUILTIN_VEC_NEG to
	P8V_BUILTIN_VEC_NEG.

gcc/testsuite/ChangeLog:

2018-02-19  Carl Love  <cel@us.ibm.com>
	* gcc.target/powerpc/fold-vec-neg-int.p7.c: Remove test file.

From-SVN: r257812