- insn = gen_extend_insn (op0, op1, promoted_nominal_mode,
+ /* If op1 is a hard register that is likely spilled, first
+ force it into a pseudo, otherwise combiner might extend
+ its lifetime too much. */
+ if (GET_CODE (t) == SUBREG)
+ t = SUBREG_REG (t);
+ if (REG_P (t)
+ && HARD_REGISTER_P (t)
+ && ! TEST_HARD_REG_BIT (fixed_reg_set, REGNO (t))
+ && targetm.class_likely_spilled_p (REGNO_REG_CLASS (REGNO (t))))
+ {
+ t = gen_reg_rtx (GET_MODE (op1));
+ emit_move_insn (t, op1);
+ }
+ else
+ t = op1;
+ insn = gen_extend_insn (op0, t, promoted_nominal_mode,