re PR tree-optimization/91632 (Probably wrong code since r275026)

	PR tree-optimization/91632
	* gcc.c-torture/execute/pr91632.c: New test.

From-SVN: r275318

gcc/testsuite/ChangeLog

+2019-09-02  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/91632
+	* gcc.c-torture/execute/pr91632.c: New test.
+
 2019-09-02  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gcc.dg/tree-ssa/slsr-42.c: New test.

gcc/testsuite/gcc.c-torture/execute/pr91632.c

+/* PR tree-optimization/91632 */
+/* { dg-additional-options "-fwrapv" } */
+
+static int
+__attribute__((noipa))
+foo (char x)
+{
+  switch (x)
+    {
+    case '"':
+    case '<':
+    case '>':
+    case '\\':
+    case '^':
+    case '`':
+    case '{':
+    case '|':
+    case '}':
+      return 0;
+    }
+  return 1;
+}
+
+int
+main ()
+{
+  if (foo ('h') == 0)
+    __builtin_abort ();
+  return 0;
+}