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re PR middle-end/53245 (ice in expand_case) 

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.

From-SVN: r187248
This commit is contained in:
Steven Bosscher 2012-05-07 14:40:33 +00:00
parent 60197adbfd
commit 5be1632b7d
2 changed files with 11 additions and 0 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2012-05-07 Steven Bosscher <steven@gcc.gnu.org>
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.
2012-05-07 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.md (ctz<mode>2): Emit rep;bsf

4
gcc/gimplify.c
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@ -1658,6 +1658,10 @@ preprocess_case_label_vec_for_gimple (VEC(tree,heap) *labels,
&& 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;
}
}