+2010-04-08 Richard Guenther <rguenther@suse.de>
+
+ PR tree-optimization/43679
+ * tree-ssa-pre.c (eliminate): Only propagate copies.
+
2010-04-08 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/43681
+2010-04-08 Richard Guenther <rguenther@suse.de>
+
+ PR tree-optimization/43679
+ * gcc.c-torture/compile/pr43679.c: New testcase.
+
2010-04-08 Jakub Jelinek <jakub@redhat.com>
PR debug/43670
--- /dev/null
+unsigned g_5;
+int g_7;
+int g_23[2];
+int *g_29 = &g_23[0];
+int **g_59;
+unsigned long g_186;
+
+int foo (int, int);
+int bar (int);
+
+void func_37 (long p_38)
+{
+ int *l_39 = &g_7;
+ *l_39 = (*l_39
+ ||
+ (foo
+ (((*g_29 != *l_39, ((bar (g_59 != &l_39), 0), 0))),
+ 0)));
+ foo (*l_39, 0);
+ int **l_256 = &l_39;
+ {
+ for (0; g_186; 0)
+ {
+ *l_256 = *l_256;
+ if (g_5)
+ goto lbl_270;
+ *l_39 &= 0;
+ }
+ }
+lbl_270:
+ ;
+}
+
for (i = 0; VEC_iterate (gimple, to_remove, i, stmt); ++i)
{
tree lhs = gimple_assign_lhs (stmt);
+ tree rhs = gimple_assign_rhs1 (stmt);
use_operand_p use_p;
gimple use_stmt;
/* If there is a single use only, propagate the equivalency
instead of keeping the copy. */
if (TREE_CODE (lhs) == SSA_NAME
+ && TREE_CODE (rhs) == SSA_NAME
&& single_imm_use (lhs, &use_p, &use_stmt)
- && may_propagate_copy (USE_FROM_PTR (use_p),
- gimple_assign_rhs1 (stmt)))
+ && may_propagate_copy (USE_FROM_PTR (use_p), rhs))
{
SET_USE (use_p, gimple_assign_rhs1 (stmt));
update_stmt (use_stmt);