From e54db24f7355b816f4087b083deb79a2bd76d8dc Mon Sep 17 00:00:00 2001 From: Mark Mitchell Date: Mon, 15 Mar 1999 09:25:01 +0000 Subject: [PATCH] reload.c (find_reloads): Add a REG_LABEL note if we substitute a LABEL_REF for something else. Mon Mar 15 10:20:20 1999 Mark Mitchell * reload.c (find_reloads): Add a REG_LABEL note if we substitute a LABEL_REF for something else. From-SVN: r25777 --- gcc/ChangeLog | 5 +++++ gcc/reload.c | 16 +++++++++++++++- 2 files changed, 20 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 88e3bd26171..049d7adbd8a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Mon Mar 15 10:20:20 1999 Mark Mitchell + + * 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 * fold-const.c (exact_real_inverse): Move variable `float_error' diff --git a/gcc/reload.c b/gcc/reload.c index e424d74554a..936e72fced4 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]); } -- 2.30.2