2001-08-22 Jason Merrill <jason_merrill@redhat.com>
+ * explow.c (set_mem_attributes): Avoid returning a bogus alias set
+ from a new MEM.
+
* jump.c (squeeze_notes): Take parms by reference. Handle END being
a squeezable note.
* rtl.h: Adjust.
here, because, in C and C++, the fact that a location is accessed
through a const expression does not mean that the value there can
never change. */
+
+ /* If we have already set DECL_RTL = ref, get_alias_set will get the
+ wrong answer, as it assumes that DECL_RTL already has the right alias
+ info. Callers should not set DECL_RTL until after the call to
+ set_mem_attributes. */
+ if (DECL_P (t) && ref == DECL_RTL_IF_SET (t))
+ abort ();
+
set_mem_alias_set (ref, get_alias_set (t));
+
MEM_VOLATILE_P (ref) = TYPE_VOLATILE (type);
MEM_IN_STRUCT_P (ref) = AGGREGATE_TYPE_P (type);