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-rw-r--r--gcc/regclass.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/regclass.c b/gcc/regclass.c
index 6a741a64b4b..3db64a2244d 100644
--- a/gcc/regclass.c
+++ b/gcc/regclass.c
@@ -859,9 +859,11 @@ record_operand_costs (insn, op_costs, reg_pref)
if (GET_CODE (recog_data.operand[i]) == SUBREG)
{
rtx inner = SUBREG_REG (recog_data.operand[i]);
+#ifdef CLASS_CANNOT_CHANGE_SIZE
if (GET_MODE_SIZE (modes[i]) != GET_MODE_SIZE (GET_MODE (inner))
&& GET_CODE (inner) == REG)
SET_REGNO_REG_SET (reg_changes_size, REGNO (inner));
+#endif
recog_data.operand[i] = inner;
}