On Mon, May 7, 2012 at 4:35 PM, Steven Bosscher <stevenb....@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; > } > }
