Revert r102604. It was breaking 32-bit Linux. See

       http://llvm.org/bugs/show_bug.cgi?id=8153

llvm-svn: 115183

Author: isanbard

llvm/include/llvm/ADT/SmallVector.h

@@ -61,7 +61,7 @@ class SmallVectorBase {
   // number of union instances for the space, which guarantee maximal alignment.
   struct U {
 #ifdef __GNUC__
-    char X __attribute__((aligned(8)));
+    char X __attribute__((aligned));
 #else
     union {
       double D;