diff options
Diffstat (limited to 'gcc/gcse.c')
| -rw-r--r-- | gcc/gcse.c | 24 |
1 files changed, 13 insertions, 11 deletions
@@ -2048,21 +2048,23 @@ insert_insn_end_basic_block (struct gcse_expr *expr, basic_block bb) && (!single_succ_p (bb) || single_succ_edge (bb)->flags & EDGE_ABNORMAL))) { -#if HAVE_cc0 /* FIXME: 'twould be nice to call prev_cc0_setter here but it aborts if cc0 isn't set. */ - rtx note = find_reg_note (insn, REG_CC_SETTER, NULL_RTX); - if (note) - insn = safe_as_a <rtx_insn *> (XEXP (note, 0)); - else + if (HAVE_cc0) { - rtx_insn *maybe_cc0_setter = prev_nonnote_insn (insn); - if (maybe_cc0_setter - && INSN_P (maybe_cc0_setter) - && sets_cc0_p (PATTERN (maybe_cc0_setter))) - insn = maybe_cc0_setter; + rtx note = find_reg_note (insn, REG_CC_SETTER, NULL_RTX); + if (note) + insn = safe_as_a <rtx_insn *> (XEXP (note, 0)); + else + { + rtx_insn *maybe_cc0_setter = prev_nonnote_insn (insn); + if (maybe_cc0_setter + && INSN_P (maybe_cc0_setter) + && sets_cc0_p (PATTERN (maybe_cc0_setter))) + insn = maybe_cc0_setter; + } } -#endif + /* FIXME: What if something in cc0/jump uses value set in new insn? */ new_insn = emit_insn_before_noloc (pat, insn, bb); } |