------- Comment #4 from jv244 at cam dot ac dot uk 2009-05-16 11:19 ------- (In reply to comment #3) > Like so: > > Index: trans-expr.c > =================================================================== > --- trans-expr.c (revision 147583) > +++ trans-expr.c (working copy) > @@ -4430,7 +4430,8 @@ gfc_trans_zero_assign (gfc_expr * expr) > > /* Convert arguments to the correct types. */ > if (!POINTER_TYPE_P (TREE_TYPE (dest))) > - dest = gfc_build_addr_expr (pvoid_type_node, dest); > + return build2 (MODIFY_EXPR, void_type_node, > + dest, build_constructor (TREE_TYPE (dest), NULL)); > else > dest = fold_convert (pvoid_type_node, dest); > len = fold_convert (size_type_node, len);
this seems to speedup this case by somewhat, but not quite as much as the hand-coded version (even with the other unroll parameters). However, another testcase I run automatically when building gcc is much faster with a patched trunk than unpatched trunk from a week ago. I will try to see if this is due to this patch alone. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40168
