diff options
Diffstat (limited to 'gcc/regrename.c')
| -rw-r--r-- | gcc/regrename.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/gcc/regrename.c b/gcc/regrename.c index c2e773d875f..330ed3b4284 100644 --- a/gcc/regrename.c +++ b/gcc/regrename.c @@ -1750,14 +1750,13 @@ copyprop_hardreg_forward (void) processed, begin with the value data that was live at the end of the predecessor block. */ /* ??? Ought to use more intelligent queuing of blocks. */ - if (bb->pred) - for (bbp = bb; bbp && bbp != bb->pred->src; bbp = bbp->prev_bb); - if (bb->pred - && ! bb->pred->pred_next - && ! (bb->pred->flags & (EDGE_ABNORMAL_CALL | EDGE_EH)) - && bb->pred->src != ENTRY_BLOCK_PTR + if (EDGE_COUNT (bb->preds) > 0) + for (bbp = bb; bbp && bbp != EDGE_PRED (bb, 0)->src; bbp = bbp->prev_bb); + if (EDGE_COUNT (bb->preds) == 1 + && ! (EDGE_PRED (bb, 0)->flags & (EDGE_ABNORMAL_CALL | EDGE_EH)) + && EDGE_PRED (bb, 0)->src != ENTRY_BLOCK_PTR && bbp) - all_vd[bb->index] = all_vd[bb->pred->src->index]; + all_vd[bb->index] = all_vd[EDGE_PRED (bb, 0)->src->index]; else init_value_data (all_vd + bb->index); |
