| Message ID | 52829F45.1070106@redhat.com |
|---|---|
| State | New |
| Headers | show |
Index: ira-costs.c =================================================================== --- ira-costs.c (revision 204594) +++ ira-costs.c (working copy) @@ -1224,6 +1224,9 @@ record_operand_costs (rtx insn, enum reg preferred class is very expensive as the source of a copy instruction. */ if ((set = single_set (insn)) != NULL_RTX + /* In rare cases the single set insn might have less 2 operands + as the source can be a fixed special reg. */ + && recog_data.n_operands > 1 && ops[0] == SET_DEST (set) && ops[1] == SET_SRC (set)) { int regno, other_regno;
The following patch fixes usage of an uninitialized value in record_operand_costs: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58712 The single set insn might have less 2 operands, e.g. x86_fnstcw_1. Committed as rev. 204720. 2013-11-12 Vladimir Makarov <vmakarov@redhat.com> PR other/58712 * ira-costs.c (record_operand_costs): Check operands number for the single set.