diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/reload.c | 16 |
2 files changed, 20 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 88e3bd2..049d7ad 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Mon Mar 15 10:20:20 1999 Mark Mitchell <mark@markmitchell.com> + + * reload.c (find_reloads): Add a REG_LABEL note if we substitute a + LABEL_REF for something else. + Mon Mar 15 08:24:17 1999 Kaveh R. Ghazi <ghazi@caip.rutgers.edu> * fold-const.c (exact_real_inverse): Move variable `float_error' diff --git a/gcc/reload.c b/gcc/reload.c index e424d74..936e72f 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -3854,7 +3854,21 @@ find_reloads (insn, replace, ind_levels, live_known, reload_reg_p) reload_{in,out}_reg when we do these replacements. */ if (replace) - *recog_operand_loc[i] = substed_operand[i]; + { + rtx substitution = substed_operand[i]; + + *recog_operand_loc[i] = substitution; + + /* If we're replacing an operand with a LABEL_REF, we need + to make sure that there's a REG_LABEL note attached to + this instruction. */ + if (GET_CODE (insn) != JUMP_INSN + && GET_CODE (substitution) == LABEL_REF + && !find_reg_note (insn, REG_LABEL, XEXP (substitution, 0))) + REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_LABEL, + XEXP (substitution, 0), + REG_NOTES (insn)); + } else retval |= (substed_operand[i] != *recog_operand_loc[i]); } |