The following patch fixes
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55396
The patch was successfully tested and bootstrapped on x886/x86-64.
Committed as rev. 193678.
2012-11-20 Vladimir Makarov <vmaka...@redhat.com>
PR rtl-optimization/55396
* lra-constraints.c (get_reload_reg): Change class if it is
different from reg class.
Index: lra-constraints.c
===================================================================
--- lra-constraints.c (revision 193677)
+++ lra-constraints.c (working copy)
@@ -425,7 +425,7 @@ get_reload_reg (enum op_type type, enum
fprintf (lra_dump_file, " Reuse r%d for reload ", regno);
print_value_slim (lra_dump_file, original, 1);
}
- if (rclass != new_class)
+ if (new_class != lra_get_allocno_class (regno))
change_class (regno, new_class, ", change", false);
if (lra_dump_file != NULL)
fprintf (lra_dump_file, "\n");
