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| author | Andreas Krebbel <krebbel1@de.ibm.com> | 2008-03-06 11:35:30 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2008-03-06 11:35:30 +0000 |
| commit | e186ff694e3233b58c8b7d04e90f223f84b9d691 (patch) | |
| tree | 2c56878216d3ee70908c9fd34be3eeee9cc5af9f /gcc/cse.c | |
| parent | 4c067742bdf8ee3976f05d7b85dc152ebf629ae3 (diff) | |
| download | gcc-e186ff694e3233b58c8b7d04e90f223f84b9d691.zip gcc-e186ff694e3233b58c8b7d04e90f223f84b9d691.tar.gz gcc-e186ff694e3233b58c8b7d04e90f223f84b9d691.tar.bz2 | |
cse.c (cse_extended_basic_block): Invalidate artificial defs at bb start.
2008-03-06 Andreas Krebbel <krebbel1@de.ibm.com>
* cse.c (cse_extended_basic_block): Invalidate artificial defs
at bb start.
From-SVN: r132968
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -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 |