| Message ID | CABu31nM7xKEhVShEuX9dPyf--QvdWP6PRS4B5O6xnZZULNAk2Q@mail.gmail.com |
|---|---|
| State | New |
| Headers | show |
On Mon, May 7, 2012 at 4:35 PM, Steven Bosscher <stevenb.gcc@gmail.com> wrote: > Hello, > > This patch fixes PR53245. > Bootstrapped&tested on powerpc64-unknown-linux-gnu. OK for trunk? Ok. Thanks, Richard. > Ciao! > Steven > > > PR middle-end/53245 > * gimplify.c (preprocess_case_label_vec_for_gimple): If low or high > is folded to a type boundary value, verify that the resulting case > label is still a care range. > > Index: gimplify.c > =================================================================== > --- gimplify.c (revision 187219) > +++ gimplify.c (working copy) > @@ -1658,6 +1658,10 @@ preprocess_case_label_vec_for_gimple (VEC(tree,hea > && tree_int_cst_compare (high, max_value) > 0) > high = max_value; > high = fold_convert (index_type, high); > + > + /* We may have folded a case range to a one-value case. */ > + if (tree_int_cst_equal (low, high)) > + high = NULL_TREE; > } > }
On Mon, May 7, 2012 at 7:35 AM, Steven Bosscher <stevenb.gcc@gmail.com> wrote: > Hello, > > This patch fixes PR53245. > Bootstrapped&tested on powerpc64-unknown-linux-gnu. OK for trunk? > > Ciao! > Steven > > > PR middle-end/53245 > * gimplify.c (preprocess_case_label_vec_for_gimple): If low or high > is folded to a type boundary value, verify that the resulting case > label is still a care range. > Can you add the testcase in http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53245#c1 Thanks.
Index: gimplify.c =================================================================== --- gimplify.c (revision 187219) +++ gimplify.c (working copy) @@ -1658,6 +1658,10 @@ preprocess_case_label_vec_for_gimple (VEC(tree,hea && tree_int_cst_compare (high, max_value) > 0) high = max_value; high = fold_convert (index_type, high); + + /* We may have folded a case range to a one-value case. */ + if (tree_int_cst_equal (low, high)) + high = NULL_TREE; } }