[PATCH i386][google]With -mtune=core2, avoid generating the slow unaligned vector load/store

doc/tm.texi.in

Index: doc/tm.texi.in
===================================================================
--- doc/tm.texi.in	(revision 182265)
+++ doc/tm.texi.in	(working copy)
@@ -10875,6 +10875,11 @@ The result is another tree containing a simplified
 call's result.  If @var{ignore} is true the value will be ignored.
 @end deftypefn
 
+@hook TARGET_SLOW_UNALIGNED_VECTOR_MEMOP
+Return true if unaligned vector memory load/store is a slow operation
+on this target.
+@end deftypefn
+
 @hook TARGET_INVALID_WITHIN_DOLOOP
 
 Take an instruction in @var{insn} and return NULL if it is valid within a