[PATCH] Fix immintrin.h to include wmmintrin.h if -mpclmul is specified

[John Baldwin]

The wmmintrin.h header includes two different sub-headers: one for AES support 
and one for PCLMUL support.  The current immintrin.h header in clang 3.4 at 
least only includes wmmintrin.h if AES support is enabled.  It should include 
it if either AES or PCLMUL is enabled (GCC's version of immintrin.h does 
this).

Index: tools/clang/lib/Headers/immintrin.h
===================================================================
--- tools/clang/lib/Headers/immintrin.h (revision 263553)
+++ tools/clang/lib/Headers/immintrin.h (revision 263554)
@@ -48,7 +48,7 @@
 #include <smmintrin.h>
 #endif
 
-#if defined (__AES__)
+#if defined (__AES__) || defined (__PCLMUL__)
 #include <wmmintrin.h>
 #endif

-- 
John Baldwin