diff options
Diffstat (limited to 'gcc/df-core.c')
| -rw-r--r-- | gcc/df-core.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/df-core.c b/gcc/df-core.c index 5ec802d0f8b..cee00b9dafd 100644 --- a/gcc/df-core.c +++ b/gcc/df-core.c @@ -1354,6 +1354,30 @@ df_set_bb_dirty (basic_block bb) } +/* Mark BB as needing it's transfer functions as being out of + date, except for LR problem. Used when analyzing DEBUG_INSNs, + as LR problem can trigger DCE, and DEBUG_INSNs shouldn't ever + shorten or enlarge lifetime of regs. */ + +void +df_set_bb_dirty_nonlr (basic_block bb) +{ + if (df) + { + int p; + for (p = 1; p < df->num_problems_defined; p++) + { + struct dataflow *dflow = df->problems_in_order[p]; + if (dflow == df_lr) + continue; + if (dflow->out_of_date_transfer_functions) + bitmap_set_bit (dflow->out_of_date_transfer_functions, bb->index); + dflow->solutions_dirty = true; + } + } +} + + /* Clear the dirty bits. This is called from places that delete blocks. */ static void |