diff options
Diffstat (limited to 'gcc/cfglayout.c')
| -rw-r--r-- | gcc/cfglayout.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/gcc/cfglayout.c b/gcc/cfglayout.c index b4ca49f4324..be1188d0b61 100644 --- a/gcc/cfglayout.c +++ b/gcc/cfglayout.c @@ -887,6 +887,46 @@ fixup_reorder_chain (void) if (e && !can_fallthru (e->src, e->dest)) force_nonfallthru (e); } + + /* Ensure goto_locus from edges has some instructions with that locus + in RTL. */ + if (!optimize) + FOR_EACH_BB (bb) + { + edge e; + edge_iterator ei; + + FOR_EACH_EDGE (e, ei, bb->succs) + if (e->goto_locus && !(e->flags & EDGE_ABNORMAL)) + { + basic_block nb; + + if (simplejump_p (BB_END (e->src))) + { + if (INSN_LOCATOR (BB_END (e->src)) == (int) e->goto_locus) + continue; + if (INSN_LOCATOR (BB_END (e->src)) == 0) + { + INSN_LOCATOR (BB_END (e->src)) = e->goto_locus; + continue; + } + } + if (e->dest != EXIT_BLOCK_PTR) + { + insn = BB_HEAD (e->dest); + if (!INSN_P (insn)) + insn = next_insn (insn); + if (insn && INSN_P (insn) + && INSN_LOCATOR (insn) == (int) e->goto_locus) + continue; + } + nb = split_edge (e); + if (!INSN_P (BB_END (nb))) + BB_END (nb) = emit_insn_after_noloc (gen_nop (), BB_END (nb), + nb); + INSN_LOCATOR (BB_END (nb)) = e->goto_locus; + } + } } /* Perform sanity checks on the insn chain. |