xmmintrin.h: Make inclusion of emmintrin.h conditional to __SSE2__.

        * config/i386/xmmintrin.h: Make inclusion of emmintrin.h
        conditional to __SSE2__.
        (Entries below should have been added to first ChangeLog
        entry for amdfam10 dated 2007-02-05)
        * config/i386/emmintrin.h: Generate #error if __SSE2__ is not
        defined.
        * config/i386/pmmintrin.h: Generate #error if __SSE3__ is not
        defined.
        * config/i386/tmmintrin.h: Generate #error if __SSSE3__ is not
        defined.

From-SVN: r121726

gcc/ChangeLog

+2007-02-08  Harsha Jagasia  <harsha.jagasia@amd.com>
+
+	* config/i386/xmmintrin.h: Make inclusion of emmintrin.h
+	conditional to __SSE2__.
+	(Entries below should have been added to first ChangeLog
+	entry for amdfam10 dated 2007-02-05)
+	* config/i386/emmintrin.h: Generate #error if __SSE2__ is not
+	defined.
+	* config/i386/pmmintrin.h: Generate #error if __SSE3__ is not
+	defined.
+	* config/i386/tmmintrin.h: Generate #error if __SSSE3__ is not
+	defined.
+
 2007-02-08  DJ Delorie  <dj@redhat.com>
 
 	* config/m32c/m32c-protos.h (m32c_illegal_subreg_p): New.

gcc/config/i386/xmmintrin.h

-/* Copyright (C) 2002, 2003, 2004, 2005, 2006
+/* Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
    Free Software Foundation, Inc.
 
    This file is part of GCC.
@@ -1242,7 +1242,9 @@ do {									\
 } while (0)
 
 /* For backward source compatibility.  */
-#include <emmintrin.h>
+#ifdef __SSE2__
+# include <emmintrin.h>
+#endif
 
 #endif /* __SSE__ */
 #endif /* _XMMINTRIN_H_INCLUDED */