PR tree-optimization/57488
* tree-ssa-pre.c (insert): Clear NEW sets before each iteration.
* gcc.dg/torture/pr57488.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@200363
138bc75d-0d04-0410-961f-
82ee72b054a4
+2013-06-24 Richard Biener <rguenther@suse.de>
+
+ PR tree-optimization/57488
+ * tree-ssa-pre.c (insert): Clear NEW sets before each iteration.
+
2013-06-24 Alan Modra <amodra@gmail.com>
* config/rs6000/rs6000.c (vspltis_constant): Correct for little-endian.
+2013-06-24 Richard Biener <rguenther@suse.de>
+
+ PR tree-optimization/57488
+ * gcc.dg/torture/pr57488.c: New testcase.
+
2013-06-24 Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
Dominique d'Humieres <dominiq@lps.ens.fr>
--- /dev/null
+/* { dg-do run } */
+
+extern void abort (void);
+
+int i, j, *pj = &j, **ppj = &pj;
+int x, *px = &x;
+
+short s, *ps = &s, k;
+
+unsigned short u, *pu = &u, **ppu = &pu;
+
+char c, *pc = &c;
+
+unsigned char v = 48;
+
+static int
+bar (int p)
+{
+ p = k;
+ *px = **ppu = i;
+ *ppj = &p;
+ if (**ppj)
+ *pj = p;
+ return p;
+}
+
+void __attribute__((noinline))
+foo ()
+{
+ for (; i <= 3; i++)
+ for (; j; j--);
+
+ u ^= bar (*pj);
+
+ for (k = 1; k >= 0; k--)
+ {
+ int l;
+ bar (0);
+ for (l = 1; l < 5; l++)
+ {
+ int m;
+ for (m = 6; m; m--)
+ {
+ v--;
+ *ps = *pc;
+ }
+ }
+ }
+}
+
+int
+main ()
+{
+ foo ();
+ if (v != 0)
+ abort ();
+ return 0;
+}
if (dump_file && dump_flags & TDF_DETAILS)
fprintf (dump_file, "Starting insert iteration %d\n", num_iterations);
new_stuff = insert_aux (ENTRY_BLOCK_PTR);
+
+ /* Clear the NEW sets before the next iteration. We have already
+ fully propagated its contents. */
+ if (new_stuff)
+ FOR_ALL_BB (bb)
+ bitmap_set_free (NEW_SETS (bb));
}
statistics_histogram_event (cfun, "insert iterations", num_iterations);
}