re PR tree-optimization/87645 (gcc hangs up on vr_values::vrp_visit_assignment_or_call)

2018-10-19  Richard Biener  <rguenther@suse.de>

	PR middle-end/87645
	* gcc.dg/torture/pr87645.c: New testcase.

From-SVN: r265317

gcc/testsuite/ChangeLog

 2018-10-19  Richard Biener  <rguenther@suse.de>
 
+	PR middle-end/87645
+	* gcc.dg/torture/pr87645.c: New testcase.
+
+2018-10-19  Richard Biener  <rguenther@suse.de>
+
 	PR target/87657
 	* gcc.target/i386/pr87657.c: New testcase.
 

gcc/testsuite/gcc.dg/torture/pr87645.c

+/* { dg-do compile } */
+
+typedef unsigned a[8];
+a b, g;
+int c, d, e, f;
+int h() {
+    unsigned i = 2;
+    for (; i < 8; i++)
+      b[i] = 0;
+    for (; f;) {
+	d = 1;
+	for (; d < 14; d += 3) {
+	    e = 0;
+	    for (; e < 8; e++) {
+		i = 2;
+		for (; i < 8; i++)
+		  b[i] = 5 - (c - g[e] + b[i]);
+	    }
+	}
+    }
+}