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That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" These are easier to set and test when they have their own fields. Reduce the size of alias_index and sort_index to 4 bits, which is sufficient for TCG_MAX_OP_ARGS. This leaves only the bits indicating constants within the ct field. Move all initialization to allocation time, rather than init individual fields in process_op_defs. Signed-off-by: Richard Henderson --- include/tcg/tcg.h | 14 +++++++------- tcg/tcg.c | 28 ++++++++++++---------------- 2 files changed, 19 insertions(+), 23 deletions(-) diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h index 3168315bb8..e8629b58c8 100644 --- a/include/tcg/tcg.h +++ b/include/tcg/tcg.h @@ -976,15 +976,15 @@ int64_t tcg_cpu_exec_time(void); void tcg_dump_info(void); void tcg_dump_op_count(void); =20 -#define TCG_CT_ALIAS 0x80 -#define TCG_CT_IALIAS 0x40 -#define TCG_CT_NEWREG 0x20 /* output requires a new register */ -#define TCG_CT_CONST 0x02 /* any constant of register size */ +#define TCG_CT_CONST 1 /* any constant of register size */ =20 typedef struct TCGArgConstraint { - uint16_t ct; - uint8_t alias_index; - uint8_t sort_index; + unsigned ct : 16; + unsigned alias_index : 4; + unsigned sort_index : 4; + bool oalias : 1; + bool ialias : 1; + bool newreg : 1; TCGRegSet regs; } TCGArgConstraint; =20 diff --git a/tcg/tcg.c b/tcg/tcg.c index a618497c94..ad4b7fb90f 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -958,7 +958,7 @@ void tcg_context_init(TCGContext *s) total_args +=3D n; } =20 - args_ct =3D g_malloc(sizeof(TCGArgConstraint) * total_args); + args_ct =3D g_new0(TCGArgConstraint, total_args); =20 for(op =3D 0; op < NB_OPS; op++) { def =3D &tcg_op_defs[op]; @@ -2197,7 +2197,7 @@ static int get_constraint_priority(const TCGOpDef *de= f, int k) const TCGArgConstraint *arg_ct =3D &def->args_ct[k]; int n; =20 - if (arg_ct->ct & TCG_CT_ALIAS) { + if (arg_ct->oalias) { /* an alias is equivalent to a single register */ n =3D 1; } else { @@ -2260,8 +2260,6 @@ static void process_op_defs(TCGContext *s) /* Incomplete TCGTargetOpDef entry. */ tcg_debug_assert(ct_str !=3D NULL); =20 - def->args_ct[i].regs =3D 0; - def->args_ct[i].ct =3D 0; while (*ct_str !=3D '\0') { switch(*ct_str) { case '0' ... '9': @@ -2270,18 +2268,18 @@ static void process_op_defs(TCGContext *s) tcg_debug_assert(ct_str =3D=3D tdefs->args_ct_str[= i]); tcg_debug_assert(oarg < def->nb_oargs); tcg_debug_assert(def->args_ct[oarg].regs !=3D 0); - /* TCG_CT_ALIAS is for the output arguments. - The input is tagged with TCG_CT_IALIAS. */ def->args_ct[i] =3D def->args_ct[oarg]; - def->args_ct[oarg].ct |=3D TCG_CT_ALIAS; + /* The output sets oalias. */ + def->args_ct[oarg].oalias =3D true; def->args_ct[oarg].alias_index =3D i; - def->args_ct[i].ct |=3D TCG_CT_IALIAS; + /* The input sets ialias. */ + def->args_ct[i].ialias =3D true; def->args_ct[i].alias_index =3D oarg; } ct_str++; break; case '&': - def->args_ct[i].ct |=3D TCG_CT_NEWREG; + def->args_ct[i].newreg =3D true; ct_str++; break; case 'i': @@ -2848,7 +2846,7 @@ static void liveness_pass_1(TCGContext *s) set =3D *pset; =20 set &=3D ct->regs; - if (ct->ct & TCG_CT_IALIAS) { + if (ct->ialias) { set &=3D op->output_pref[ct->alias_index]; } /* If the combination is not possible, restart. */ @@ -3665,7 +3663,7 @@ static void tcg_reg_alloc_op(TCGContext *s, const TCG= Op *op) } =20 i_preferred_regs =3D o_preferred_regs =3D 0; - if (arg_ct->ct & TCG_CT_IALIAS) { + if (arg_ct->ialias) { o_preferred_regs =3D op->output_pref[arg_ct->alias_index]; if (ts->fixed_reg) { /* if fixed register, we must allocate a new register @@ -3688,8 +3686,7 @@ static void tcg_reg_alloc_op(TCGContext *s, const TCG= Op *op) reg =3D ts->reg; for (k2 =3D 0 ; k2 < k ; k2++) { i2 =3D def->args_ct[nb_oargs + k2].sort_index; - if ((def->args_ct[i2].ct & TCG_CT_IALIAS) && - reg =3D=3D new_args[i2]) { + if (def->args_ct[i2].ialias && reg =3D=3D new_args= [i2]) { goto allocate_in_reg; } } @@ -3760,10 +3757,9 @@ static void tcg_reg_alloc_op(TCGContext *s, const TC= GOp *op) /* ENV should not be modified. */ tcg_debug_assert(!ts->fixed_reg); =20 - if ((arg_ct->ct & TCG_CT_ALIAS) - && !const_args[arg_ct->alias_index]) { + if (arg_ct->oalias && !const_args[arg_ct->alias_index]) { reg =3D new_args[arg_ct->alias_index]; - } else if (arg_ct->ct & TCG_CT_NEWREG) { + } else if (arg_ct->newreg) { reg =3D tcg_reg_alloc(s, arg_ct->regs, i_allocated_regs | o_allocated_regs, op->output_pref[k], ts->indirect_base); --=20 2.25.1