diff options
Diffstat (limited to 'tcg/tcg.c')
| -rw-r--r-- | tcg/tcg.c | 99 |
1 files changed, 38 insertions, 61 deletions
diff --git a/tcg/tcg.c b/tcg/tcg.c index e211e6eedb..d40198e086 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -1198,57 +1198,50 @@ static void tcg_liveness_analysis(TCGContext *s) break; /* XXX: optimize by hardcoding common cases (e.g. triadic ops) */ default: - if (op > INDEX_op_end) { - args -= def->nb_args; - nb_iargs = def->nb_iargs; - nb_oargs = def->nb_oargs; + args -= def->nb_args; + nb_iargs = def->nb_iargs; + nb_oargs = def->nb_oargs; - /* Test if the operation can be removed because all - its outputs are dead. We assume that nb_oargs == 0 - implies side effects */ - if (!(def->flags & TCG_OPF_SIDE_EFFECTS) && nb_oargs != 0) { - for(i = 0; i < nb_oargs; i++) { - arg = args[i]; - if (!dead_temps[arg]) - goto do_not_remove; - } - tcg_set_nop(s, gen_opc_buf + op_index, args, def->nb_args); + /* Test if the operation can be removed because all + its outputs are dead. We assume that nb_oargs == 0 + implies side effects */ + if (!(def->flags & TCG_OPF_SIDE_EFFECTS) && nb_oargs != 0) { + for(i = 0; i < nb_oargs; i++) { + arg = args[i]; + if (!dead_temps[arg]) + goto do_not_remove; + } + tcg_set_nop(s, gen_opc_buf + op_index, args, def->nb_args); #ifdef CONFIG_PROFILER - s->del_op_count++; + s->del_op_count++; #endif - } else { - do_not_remove: + } else { + do_not_remove: - /* output args are dead */ - for(i = 0; i < nb_oargs; i++) { - arg = args[i]; - dead_temps[arg] = 1; - } - - /* if end of basic block, update */ - if (def->flags & TCG_OPF_BB_END) { - tcg_la_bb_end(s, dead_temps); - } else if (def->flags & TCG_OPF_CALL_CLOBBER) { - /* globals are live */ - memset(dead_temps, 0, s->nb_globals); - } - - /* input args are live */ - dead_iargs = 0; - for(i = 0; i < nb_iargs; i++) { - arg = args[i + nb_oargs]; - if (dead_temps[arg]) { - dead_iargs |= (1 << i); - } - dead_temps[arg] = 0; + /* output args are dead */ + for(i = 0; i < nb_oargs; i++) { + arg = args[i]; + dead_temps[arg] = 1; + } + + /* if end of basic block, update */ + if (def->flags & TCG_OPF_BB_END) { + tcg_la_bb_end(s, dead_temps); + } else if (def->flags & TCG_OPF_CALL_CLOBBER) { + /* globals are live */ + memset(dead_temps, 0, s->nb_globals); + } + + /* input args are live */ + dead_iargs = 0; + for(i = 0; i < nb_iargs; i++) { + arg = args[i + nb_oargs]; + if (dead_temps[arg]) { + dead_iargs |= (1 << i); } - s->op_dead_iargs[op_index] = dead_iargs; + dead_temps[arg] = 0; } - } else { - /* legacy dyngen operations */ - args -= def->nb_args; - /* mark end of basic block */ - tcg_la_bb_end(s, dead_temps); + s->op_dead_iargs[op_index] = dead_iargs; } break; } @@ -2015,22 +2008,6 @@ static inline int tcg_gen_code_common(TCGContext *s, uint8_t *gen_code_buf, goto next; case INDEX_op_end: goto the_end; - -#ifdef CONFIG_DYNGEN_OP - case 0 ... INDEX_op_end - 1: - /* legacy dyngen ops */ -#ifdef CONFIG_PROFILER - s->old_op_count++; -#endif - tcg_reg_alloc_bb_end(s, s->reserved_regs); - if (search_pc >= 0) { - s->code_ptr += def->copy_size; - args += def->nb_args; - } else { - args = dyngen_op(s, opc, args); - } - goto next; -#endif default: /* Note: in order to speed up the code, it would be much faster to have specialized register allocator functions for |