diff options
Diffstat (limited to 'gcc/dce.c')
| -rw-r--r-- | gcc/dce.c | 14 |
1 files changed, 10 insertions, 4 deletions
@@ -864,9 +864,12 @@ word_dce_process_block (basic_block bb, bool redo_out) anything in local_live. */ if (marked_insn_p (insn)) df_word_lr_simulate_uses (insn, local_live); + /* Insert debug temps for dead REGs used in subsequent debug - insns. */ - else if (debug.used && !bitmap_empty_p (debug.used)) + insns. We may have to emit a debug temp even if the insn + was marked, in case the debug use was after the point of + death. */ + if (debug.used && !bitmap_empty_p (debug.used)) { df_ref *def_rec; @@ -963,9 +966,12 @@ dce_process_block (basic_block bb, bool redo_out, bitmap au) anything in local_live. */ if (needed) df_simulate_uses (insn, local_live); + /* Insert debug temps for dead REGs used in subsequent debug - insns. */ - else if (debug.used && !bitmap_empty_p (debug.used)) + insns. We may have to emit a debug temp even if the insn + was marked, in case the debug use was after the point of + death. */ + if (debug.used && !bitmap_empty_p (debug.used)) for (def_rec = DF_INSN_DEFS (insn); *def_rec; def_rec++) dead_debug_insert_temp (&debug, DF_REF_REGNO (*def_rec), insn, DEBUG_TEMP_BEFORE_WITH_VALUE); |