--- gcc-3.2.1/gcc/reload1.c.orig 2002-10-10 09:40:20.000000000 -0600 +++ gcc-3.2.1/gcc/reload1.c 2003-01-30 12:15:05.000000000 -0700 @@ -8674,7 +8674,9 @@ ... (MEM (PLUS (REGZ) (REGY)))... . First, check that we have (set (REGX) (PLUS (REGX) (REGY))) - and that we know all uses of REGX before it dies. */ + and that we know all uses of REGX before it dies. + Also, explicitly check that REGX != REGY; our life information + does not yet show whether REGY changes in this insn. */ set = single_set (insn); if (set != NULL_RTX && GET_CODE (SET_DEST (set)) == REG @@ -8684,6 +8686,7 @@ && GET_CODE (SET_SRC (set)) == PLUS && GET_CODE (XEXP (SET_SRC (set), 1)) == REG && rtx_equal_p (XEXP (SET_SRC (set), 0), SET_DEST (set)) + && !rtx_equal_p (XEXP (SET_SRC (set), 1), SET_DEST (set)) && last_label_ruid < reg_state[REGNO (SET_DEST (set))].use_ruid) { rtx reg = SET_DEST (set);