===================================================================
@@ -470,15 +470,13 @@ alias_sets_conflict_p (alias_set_type se
/* See if the first alias set is a subset of the second. */
ase = get_alias_set_entry (set1);
if (ase != 0
- && (ase->has_zero_child
- || ase->children->get (set2)))
+ && ase->children->get (set2))
return 1;
/* Now do the same, but with the alias sets reversed. */
ase = get_alias_set_entry (set2);
if (ase != 0
- && (ase->has_zero_child
- || ase->children->get (set1)))
+ && ase->children->get (set1))
return 1;
/* The two alias sets are distinct and neither one is the
===================================================================
@@ -211,6 +211,7 @@ libgcov-driver-tool.o-warn = -Wno-error
libgcov-merge-tool.o-warn = -Wno-error
gimple-match.o-warn = -Wno-unused
generic-match.o-warn = -Wno-unused
+dfp.o-warn = -Wno-strict-aliasing
# All warnings have to be shut off in stage1 if the compiler used then
# isn't gcc; configure determines that. WARN_CFLAGS will be either
===================================================================
@@ -11,6 +11,6 @@ struct foo {
int
sub1 (long long int foobar)
{
- struct foo *tmp = (struct foo *) &foobar; // { dg-warning "type-punned pointer might" "" }
+ struct foo *tmp = (struct foo *) &foobar; // { dg-warning "type-punned pointer will" "" }
return tmp->i;
}
===================================================================
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-dse1" } */
+
+struct s1 {
+ unsigned short f1;
+ unsigned char f2;
+};
+
+struct s2 {
+ struct s1 *p1;
+};
+
+void f1(struct s2 *p)
+{
+ p->p1->f2 = 9;
+ p->p1->f2 = 10;
+}
+
+/* { dg-final { scan-tree-dump-times "f2 =" 1 "dse1" } } */
+/* { dg-final { cleanup-tree-dump "dse1" } } */