re PR tree-optimization/71109 (gcc ICE at -O3 on valid code on x86_64-linux-gnu…

re PR tree-optimization/71109 (gcc ICE at -O3 on valid code on x86_64-linux-gnu in "maybe_record_trace_start")

	PR tree-optimization/71109
	* gcc.c-torture/compile/pr71109.c: New test.

From-SVN: r266738

gcc/testsuite/ChangeLog

 2018-12-03  Jakub Jelinek  <jakub@redhat.com>
 
+	PR tree-optimization/71109
+	* gcc.c-torture/compile/pr71109.c: New test.
+
 	PR target/88287
 	* g++.target/aarch64/sve/vcond_1.C: Adjust for comparison
 	canonicalization.

gcc/testsuite/gcc.c-torture/compile/pr71109.c

+/* PR tree-optimization/71109 */
+
+struct S { int g, h; signed char i; int j; signed char k; int l[4]; } a, c;
+struct T { signed char g; } e;
+int *b, d;
+static void foo ();
+
+void
+bar (void)
+{
+  while (d)
+    {
+      int k;
+      struct T f[3];
+      foo (bar, a);
+      for (k = 0;; k++)
+	f[k] = e;
+    }
+}
+
+static inline void
+foo (int x, struct S y, struct T z)
+{
+  for (z.g = 2; z.g; z.g--)
+    {
+      c = a = y;
+      *b |= 6;
+      if (y.g)
+	break;
+    }
+}