+2004-12-18 Eric Botcazou <ebotcazou@libertysurf.fr>
+
+ PR rtl-optimization/16968
+ * loop.c (scan_loop): Stop scanning the loop for movable
+ insns as soon as an optimization barrier is encountered.
+
2004-12-17 Zack Weinberg <zack@codesourcery.com>
PR 18897
in_libcall--;
if (NONJUMP_INSN_P (p))
{
+ /* Do not scan past an optimization barrier. */
+ if (GET_CODE (PATTERN (p)) == ASM_INPUT)
+ break;
temp = find_reg_note (p, REG_LIBCALL, NULL_RTX);
if (temp)
in_libcall++;
+2004-12-18 Jakub Jelinek <jakub@redhat.com>
+
+ * gcc.c-torture/execute/20041218-1.c: New test.
+
2004-12-17 Diego Novillo <dnovillo@redhat.com>
* gcc.dg/pr18501.c: New test.
--- /dev/null
+/* PR rtl-optimization/16968 */
+/* Testcase by Jakub Jelinek <jakub@redhat.com> */
+
+struct T
+{
+ unsigned int b, c, *d;
+ unsigned char e;
+};
+struct S
+{
+ unsigned int a;
+ struct T f;
+};
+struct U
+{
+ struct S g, h;
+};
+struct V
+{
+ unsigned int i;
+ struct U j;
+};
+
+extern void exit (int);
+extern void abort (void);
+
+void *
+dummy1 (void *x)
+{
+ return "";
+}
+
+void *
+dummy2 (void *x, void *y)
+{
+ exit (0);
+}
+
+struct V *
+baz (unsigned int x)
+{
+ static struct V v;
+ __builtin_memset (&v, 0x55, sizeof (v));
+ return &v;
+}
+
+int
+check (void *x, struct S *y)
+{
+ if (y->a || y->f.b || y->f.c || y->f.d || y->f.e)
+ abort ();
+ return 1;
+}
+
+static struct V *
+bar (unsigned int x, void *y)
+{
+ const struct T t = { 0, 0, (void *) 0, 0 };
+ struct V *u;
+ void *v;
+ v = dummy1 (y);
+ if (!v)
+ return (void *) 0;
+
+ u = baz (sizeof (struct V));
+ u->i = x;
+ u->j.g.a = 0;
+ u->j.g.f = t;
+ u->j.h.a = 0;
+ u->j.h.f = t;
+
+ if (!check (v, &u->j.g) || !check (v, &u->j.h))
+ return (void *) 0;
+ return u;
+}
+
+int
+foo (unsigned int *x, unsigned int y, void **z)
+{
+ void *v;
+ unsigned int i, j;
+
+ *z = v = (void *) 0;
+
+ for (i = 0; i < y; i++)
+ {
+ struct V *c;
+
+ j = *x;
+
+ switch (j)
+ {
+ case 1:
+ c = bar (j, x);
+ break;
+ default:
+ c = 0;
+ break;
+ }
+ if (c)
+ v = dummy2 (v, c);
+ else
+ return 1;
+ }
+
+ *z = v;
+ return 0;
+}
+
+int
+main (void)
+{
+ unsigned int one = 1;
+ void *p;
+ foo (&one, 1, &p);
+ abort ();
+}