re PR tree-optimization/32772 (error: found real variable when subvariables should have appeared)

	PR tree-optimization/32772
	* gcc.c-torture/compile/20070905-1.c: New test.

	PR tree-optimization/32975
	* gcc.dg/pr32975.c: New test.

From-SVN: r128688

gcc/testsuite/ChangeLog

@@ -7,6 +7,12 @@
 	attributes.
 	* g++.dg/ext/va-arg-pack-len-2.C: New test.
 
+	PR tree-optimization/32772
+	* gcc.c-torture/compile/20070905-1.c: New test.
+
+	PR tree-optimization/32975
+	* gcc.dg/pr32975.c: New test.
+
 	PR middle-end/28755
 	* gcc.dg/pr28755.c: New test.
 

gcc/testsuite/gcc.c-torture/compile/20070905-1.c

+/* PR tree-optimization/32772 */
+
+struct S
+{
+  unsigned long bits[1];
+};
+
+void f1 (int, unsigned long *);
+int f2 (void);
+int f3 (int, unsigned long *);
+int f4 (int, unsigned long *);
+
+static inline __attribute__ ((always_inline))
+void baz (int x, volatile struct S *y)
+{
+  f1 (x, y->bits);
+}
+
+static int
+bar (int x, struct S *y)
+{
+  int n;
+  if (__builtin_constant_p (x) ? f3 (x, y->bits) : f4 (x, y->bits))
+    baz (x, y);
+  for (n = f2 (); n < 8; n = f2 ())
+    f3 (n, y->bits);
+}
+
+void
+foo (int x, int y)
+{
+  struct S m;
+  while ((y = bar (x, &m)) >= 0);
+}

gcc/testsuite/gcc.dg/pr32975.c

+/* PR tree-optimization/32975 */
+/* { dg-do compile } */
+/* { dg-options "-O1 -finline-functions -fipa-cp" } */
+
+static int
+f0 (char *s0, char *s1)
+{
+  return __builtin_strlen (s0) > __builtin_strlen (s1);
+}
+
+int
+f1 (char *s, int j)
+{
+  if (f0 (s, ""))
+    return 1;
+  return j;
+}
+
+void
+f2 (char *s)
+{
+  f1 (s, 0);
+}