D18325: Added mm_malloc module export.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264092 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Headers/module.modulemap

@@ -44,6 +44,7 @@ module _Builtin_intrinsics [system] [extern_c] {
     }
 
     explicit module sse {
+      export mm_malloc
       export mmx
       export sse2 // note: for hackish <emmintrin.h> dependency
       header "xmmintrin.h"

test/Headers/xmmintrin.c

@@ -23,3 +23,7 @@ __m128 test_xmmintrin_provides_emmintrin(__m128d __a, __m128d __b) {
   return _mm_add_sd(__a, __b);
 }
 
+#if __STDC_HOSTED__
+// Make sure stdlib.h symbols are accessible.
+void *p = NULL;
+#endif