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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/cse.c | 15 |
2 files changed, 20 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6b97447..f87ec3b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2008-03-06 Andreas Krebbel <krebbel1@de.ibm.com> + + * cse.c (cse_extended_basic_block): Invalidate artificial defs + at bb start. + 2008-03-06 Richard Guenther <rguenther@suse.de> * alias.c (struct alias_set_entry): Move has_zero_child field @@ -5992,6 +5992,21 @@ cse_extended_basic_block (struct cse_basic_block_data *ebb_data) int no_conflict = 0; bb = ebb_data->path[path_entry].bb; + + /* Invalidate recorded information for eh regs if there is an EH + edge pointing to that bb. */ + if (bb_has_eh_pred (bb)) + { + struct df_ref **def_rec; + + for (def_rec = df_get_artificial_defs (bb->index); *def_rec; def_rec++) + { + struct df_ref *def = *def_rec; + if (DF_REF_FLAGS (def) & DF_REF_AT_TOP) + invalidate (DF_REF_REG (def), GET_MODE (DF_REF_REG (def))); + } + } + FOR_BB_INSNS (bb, insn) { /* If we have processed 1,000 insns, flush the hash table to |