+Sat Dec 16 10:41:11 2000 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
+
+ * expmed.c (expand_mult): Write REG_EQUAL note with proper mode.
+
2000-12-16 Neil Booth <neil@daikokuya.demon.co.uk>
* tradcpp.c: T_WARNING: New.
/* We found something cheaper than a multiply insn. */
int opno;
rtx accum, tem;
+ enum machine_mode nmode;
op0 = protect_from_queue (op0, 0);
}
/* Write a REG_EQUAL note on the last insn so that we can cse
- multiplication sequences. */
+ multiplication sequences. Note that if ACCUM is a SUBREG,
+ we've set the inner register and must properly indicate
+ that. */
+
+ tem = op0, nmode = mode;
+ if (GET_CODE (accum) == SUBREG)
+ {
+ nmode = GET_MODE (SUBREG_REG (accum));
+ tem = gen_lowpart (nmode, op0);
+ }
insn = get_last_insn ();
set_unique_reg_note (insn,
REG_EQUAL,
- gen_rtx_MULT (mode, op0,
+ gen_rtx_MULT (nmode, tem,
GEN_INT (val_so_far)));
}