Part 2/3 for contributing PPC64LE support for X86 SSE instrisics.

Part 2/3 for contributing PPC64LE support for X86 SSE
instrisics. This patch includes the new (for PPC) xmmintrin.h,
changes x86intrin.h to include xmmintrin.h and associated
config.gcc changes.

From-SVN: r251356

gcc/ChangeLog

+2017-08-25  Steven Munroe  <munroesj@gcc.gnu.org>
+
+	* config.gcc (powerpc*-*-*): Add xmmintrin.h and mm_malloc.h.
+	* config/rs6000/xmmintrin.h: New file.
+	* config/rs6000/x86intrin.h [__ALTIVEC__]: Include xmmintrin.h.
+
 2017-08-25  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
 
 	PR target/81504

gcc/config.gcc

@@ -457,6 +457,7 @@ powerpc*-*-*)
 	extra_objs="rs6000-string.o rs6000-p8swap.o"
 	extra_headers="ppc-asm.h altivec.h htmintrin.h htmxlintrin.h"
 	extra_headers="${extra_headers} bmi2intrin.h bmiintrin.h"
+	extra_headers="${extra_headers} xmmintrin.h mm_malloc.h"
 	extra_headers="${extra_headers} mmintrin.h x86intrin.h"
 	extra_headers="${extra_headers} ppu_intrinsics.h spu2vmx.h vec_types.h si2vmx.h"
 	extra_headers="${extra_headers} paired.h"

gcc/config/rs6000/x86intrin.h

@@ -37,6 +37,8 @@
 
 #ifdef __ALTIVEC__
 #include <mmintrin.h>
+
+#include <xmmintrin.h>
 #endif /* __ALTIVEC__ */
 
 #include <bmiintrin.h>