opt_random.h: Include pmmintrin.h instead of x86intrin.h, and only do so when __SSE3__

	* config/cpu/i486/opt/bits/opt_random.h: Include pmmintrin.h instead
	of x86intrin.h, and only do so when __SSE3__
	* include/ext/random: Include emmintrin.h instead of x86intrin.h

From-SVN: r228786

libstdc++-v3/ChangeLog

+2015-10-13  Nathan Froyd  <froydnj@gcc.gnu.org>
+
+	* config/cpu/i486/opt/bits/opt_random.h: Include pmmintrin.h instead
+	of x86intrin.h, and only do so when __SSE3__
+	* include/ext/random: Include emmintrin.h instead of x86intrin.h
+
 2015-10-11  Joseph Myers  <joseph@codesourcery.com>
 
 	* crossconfig.m4 (GLIBCXX_CROSSCONFIG) <*-linux* | *-uclinux* |

libstdc++-v3/config/cpu/i486/opt/bits/opt_random.h

@@ -30,7 +30,9 @@
 #ifndef _BITS_OPT_RANDOM_H
 #define _BITS_OPT_RANDOM_H 1
 
-#include <x86intrin.h>
+#ifdef __SSE3__
+#include <pmmintrin.h>
+#endif
 
 
 #pragma GCC system_header

libstdc++-v3/include/ext/random

@@ -40,7 +40,7 @@
 #include <array>
 #include <ext/cmath>
 #ifdef __SSE2__
-# include <x86intrin.h>
+# include <emmintrin.h>
 #endif
 
 #if defined(_GLIBCXX_USE_C99_STDINT_TR1) && defined(UINT32_C)