mirror of
https://github.com/Motorhead1991/qemu.git
synced 2025-08-05 08:43:55 -06:00
added tcg_temp_free() and improved the handling of constants
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4544 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard
parent
d7e4036e31
commit
e8996ee012
3 changed files with 401 additions and 234 deletions
460
tcg/tcg.c
460
tcg/tcg.c
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@ -266,8 +266,11 @@ void tcg_set_macro_func(TCGContext *s, TCGMacroFunc *func)
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void tcg_func_start(TCGContext *s)
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{
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int i;
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tcg_pool_reset(s);
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s->nb_temps = s->nb_globals;
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for(i = 0; i < TCG_TYPE_COUNT; i++)
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s->first_free_temp[i] = -1;
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s->labels = tcg_malloc(sizeof(TCGLabel) * TCG_MAX_LABELS);
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s->nb_labels = 0;
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s->current_frame_offset = s->frame_start;
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@ -301,7 +304,6 @@ TCGv tcg_global_reg_new(TCGType type, int reg, const char *name)
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ts->type = type;
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ts->fixed_reg = 1;
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ts->reg = reg;
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ts->val_type = TEMP_VAL_REG;
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ts->name = name;
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s->nb_globals++;
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tcg_regset_set_reg(s->reserved_regs, reg);
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@ -327,7 +329,6 @@ TCGv tcg_global_reg2_new_hack(TCGType type, int reg1, int reg2,
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ts->type = TCG_TYPE_I32;
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ts->fixed_reg = 1;
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ts->reg = reg1;
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ts->val_type = TEMP_VAL_REG;
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pstrcpy(buf, sizeof(buf), name);
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pstrcat(buf, sizeof(buf), "_0");
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ts->name = strdup(buf);
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@ -337,7 +338,6 @@ TCGv tcg_global_reg2_new_hack(TCGType type, int reg1, int reg2,
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ts->type = TCG_TYPE_I32;
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ts->fixed_reg = 1;
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ts->reg = reg2;
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ts->val_type = TEMP_VAL_REG;
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pstrcpy(buf, sizeof(buf), name);
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pstrcat(buf, sizeof(buf), "_1");
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ts->name = strdup(buf);
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@ -370,7 +370,6 @@ TCGv tcg_global_mem_new(TCGType type, int reg, tcg_target_long offset,
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#else
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ts->mem_offset = offset;
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#endif
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ts->val_type = TEMP_VAL_MEM;
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pstrcpy(buf, sizeof(buf), name);
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pstrcat(buf, sizeof(buf), "_0");
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ts->name = strdup(buf);
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@ -386,7 +385,6 @@ TCGv tcg_global_mem_new(TCGType type, int reg, tcg_target_long offset,
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#else
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ts->mem_offset = offset + 4;
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#endif
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ts->val_type = TEMP_VAL_MEM;
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pstrcpy(buf, sizeof(buf), name);
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pstrcat(buf, sizeof(buf), "_1");
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ts->name = strdup(buf);
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@ -403,7 +401,6 @@ TCGv tcg_global_mem_new(TCGType type, int reg, tcg_target_long offset,
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ts->mem_allocated = 1;
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ts->mem_reg = reg;
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ts->mem_offset = offset;
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ts->val_type = TEMP_VAL_MEM;
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ts->name = name;
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s->nb_globals++;
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}
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@ -416,90 +413,75 @@ TCGv tcg_temp_new(TCGType type)
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TCGTemp *ts;
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int idx;
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idx = s->nb_temps;
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idx = s->first_free_temp[type];
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if (idx != -1) {
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/* There is already an available temp with the
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right type */
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ts = &s->temps[idx];
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s->first_free_temp[type] = ts->next_free_temp;
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ts->temp_allocated = 1;
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} else {
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idx = s->nb_temps;
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#if TCG_TARGET_REG_BITS == 32
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if (type == TCG_TYPE_I64) {
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tcg_temp_alloc(s, s->nb_temps + 1);
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ts = &s->temps[s->nb_temps];
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ts->base_type = type;
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ts->type = TCG_TYPE_I32;
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ts->fixed_reg = 0;
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ts->val_type = TEMP_VAL_DEAD;
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ts->mem_allocated = 0;
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ts->name = NULL;
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ts++;
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ts->base_type = TCG_TYPE_I32;
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ts->type = TCG_TYPE_I32;
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ts->val_type = TEMP_VAL_DEAD;
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ts->fixed_reg = 0;
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ts->mem_allocated = 0;
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ts->name = NULL;
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s->nb_temps += 2;
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} else
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if (type == TCG_TYPE_I64) {
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tcg_temp_alloc(s, s->nb_temps + 1);
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ts = &s->temps[s->nb_temps];
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ts->base_type = type;
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ts->type = TCG_TYPE_I32;
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ts->temp_allocated = 1;
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ts->name = NULL;
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ts++;
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ts->base_type = TCG_TYPE_I32;
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ts->type = TCG_TYPE_I32;
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ts->temp_allocated = 1;
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ts->name = NULL;
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s->nb_temps += 2;
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} else
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#endif
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{
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tcg_temp_alloc(s, s->nb_temps + 1);
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ts = &s->temps[s->nb_temps];
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ts->base_type = type;
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ts->type = type;
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ts->fixed_reg = 0;
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ts->val_type = TEMP_VAL_DEAD;
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ts->mem_allocated = 0;
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ts->name = NULL;
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s->nb_temps++;
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{
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tcg_temp_alloc(s, s->nb_temps + 1);
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ts = &s->temps[s->nb_temps];
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ts->base_type = type;
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ts->type = type;
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ts->temp_allocated = 1;
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ts->name = NULL;
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s->nb_temps++;
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}
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}
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return MAKE_TCGV(idx);
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}
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TCGv tcg_const_i32(int32_t val)
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void tcg_temp_free(TCGv arg)
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{
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TCGContext *s = &tcg_ctx;
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TCGTemp *ts;
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int idx;
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int idx = GET_TCGV(arg);
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TCGType type;
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idx = s->nb_temps;
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tcg_temp_alloc(s, idx + 1);
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assert(idx >= s->nb_globals && idx < s->nb_temps);
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ts = &s->temps[idx];
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ts->base_type = ts->type = TCG_TYPE_I32;
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ts->val_type = TEMP_VAL_CONST;
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ts->name = NULL;
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ts->val = val;
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s->nb_temps++;
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return MAKE_TCGV(idx);
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assert(ts->temp_allocated != 0);
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ts->temp_allocated = 0;
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type = ts->base_type;
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ts->next_free_temp = s->first_free_temp[type];
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s->first_free_temp[type] = idx;
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}
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TCGv tcg_const_i32(int32_t val)
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{
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TCGv t0;
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t0 = tcg_temp_new(TCG_TYPE_I32);
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tcg_gen_movi_i32(t0, val);
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return t0;
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}
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TCGv tcg_const_i64(int64_t val)
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{
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TCGContext *s = &tcg_ctx;
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TCGTemp *ts;
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int idx;
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idx = s->nb_temps;
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#if TCG_TARGET_REG_BITS == 32
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tcg_temp_alloc(s, idx + 2);
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ts = &s->temps[idx];
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ts->base_type = TCG_TYPE_I64;
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ts->type = TCG_TYPE_I32;
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ts->val_type = TEMP_VAL_CONST;
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ts->name = NULL;
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ts->val = val;
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ts++;
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ts->base_type = TCG_TYPE_I32;
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ts->type = TCG_TYPE_I32;
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ts->val_type = TEMP_VAL_CONST;
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ts->name = NULL;
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ts->val = val >> 32;
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s->nb_temps += 2;
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#else
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tcg_temp_alloc(s, idx + 1);
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ts = &s->temps[idx];
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ts->base_type = ts->type = TCG_TYPE_I64;
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ts->val_type = TEMP_VAL_CONST;
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ts->name = NULL;
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ts->val = val;
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s->nb_temps++;
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#endif
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return MAKE_TCGV(idx);
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TCGv t0;
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t0 = tcg_temp_new(TCG_TYPE_I64);
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tcg_gen_movi_i64(t0, val);
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return t0;
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}
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void tcg_register_helper(void *func, const char *name)
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@ -663,6 +645,8 @@ void tcg_gen_shifti_i64(TCGv ret, TCGv arg1,
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tcg_gen_or_i32(TCGV_HIGH(ret), TCGV_HIGH(ret), t0);
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tcg_gen_mov_i32(ret, t1);
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}
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tcg_temp_free(t0);
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tcg_temp_free(t1);
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}
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}
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#endif
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@ -679,6 +663,12 @@ void tcg_reg_alloc_start(TCGContext *s)
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ts->val_type = TEMP_VAL_MEM;
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}
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}
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for(i = s->nb_globals; i < s->nb_temps; i++) {
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ts = &s->temps[i];
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ts->val_type = TEMP_VAL_DEAD;
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ts->mem_allocated = 0;
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ts->fixed_reg = 0;
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}
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for(i = 0; i < TCG_TARGET_NB_REGS; i++) {
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s->reg_to_temp[i] = -1;
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}
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@ -693,11 +683,7 @@ static char *tcg_get_arg_str_idx(TCGContext *s, char *buf, int buf_size,
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if (idx < s->nb_globals) {
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pstrcpy(buf, buf_size, ts->name);
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} else {
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if (ts->val_type == TEMP_VAL_CONST) {
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snprintf(buf, buf_size, "$0x%" TCG_PRIlx , ts->val);
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} else {
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snprintf(buf, buf_size, "tmp%d", idx - s->nb_globals);
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}
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snprintf(buf, buf_size, "tmp%d", idx - s->nb_globals);
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}
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return buf;
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}
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@ -707,37 +693,49 @@ char *tcg_get_arg_str(TCGContext *s, char *buf, int buf_size, TCGv arg)
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return tcg_get_arg_str_idx(s, buf, buf_size, GET_TCGV(arg));
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}
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/* find helper definition (XXX: inefficient) */
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static int helper_cmp(const void *p1, const void *p2)
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{
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const TCGHelperInfo *th1 = p1;
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const TCGHelperInfo *th2 = p2;
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if (th1->func < th2->func)
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return -1;
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else if (th1->func == th2->func)
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return 0;
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else
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return 1;
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}
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/* find helper definition (Note: A hash table would be better) */
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static TCGHelperInfo *tcg_find_helper(TCGContext *s, tcg_target_ulong val)
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{
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int i;
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for(i = 0; i < s->nb_helpers; i++) {
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if (s->helpers[i].func == val)
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return &s->helpers[i];
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int m, m_min, m_max;
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TCGHelperInfo *th;
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tcg_target_ulong v;
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if (unlikely(!s->helpers_sorted)) {
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qsort(s->helpers, s->nb_helpers, sizeof(TCGHelperInfo),
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helper_cmp);
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s->helpers_sorted = 1;
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}
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/* binary search */
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m_min = 0;
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m_max = s->nb_helpers - 1;
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while (m_min <= m_max) {
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m = (m_min + m_max) >> 1;
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th = &s->helpers[m];
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v = th->func;
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if (v == val)
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return th;
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else if (val < v) {
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m_max = m - 1;
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} else {
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m_min = m + 1;
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}
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}
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return NULL;
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}
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static const char *tcg_get_helper_str_idx(TCGContext *s, char *buf, int buf_size,
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int idx)
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{
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TCGTemp *ts;
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TCGHelperInfo *th;
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ts = &s->temps[idx];
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if (ts->val_type == TEMP_VAL_CONST) {
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/* find helper name (XXX: inefficient) */
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th = tcg_find_helper(s, ts->val);
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if (th) {
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pstrcpy(buf, buf_size, "$");
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pstrcat(buf, buf_size, th->name);
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return buf;
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}
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}
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return tcg_get_arg_str_idx(s, buf, buf_size, idx);
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}
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void tcg_dump_ops(TCGContext *s, FILE *outfile)
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{
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const uint16_t *opc_ptr;
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@ -780,7 +778,7 @@ void tcg_dump_ops(TCGContext *s, FILE *outfile)
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/* function name */
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fprintf(outfile, "%s",
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tcg_get_helper_str_idx(s, buf, sizeof(buf), args[nb_oargs + nb_iargs - 1]));
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tcg_get_arg_str_idx(s, buf, sizeof(buf), args[nb_oargs + nb_iargs - 1]));
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/* flags */
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fprintf(outfile, ",$0x%" TCG_PRIlx,
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args[nb_oargs + nb_iargs]);
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@ -800,6 +798,29 @@ void tcg_dump_ops(TCGContext *s, FILE *outfile)
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tcg_get_arg_str_idx(s, buf, sizeof(buf), args[nb_oargs + i]));
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}
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}
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} else if (c == INDEX_op_movi_i32
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#if TCG_TARGET_REG_BITS == 64
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|| c == INDEX_op_movi_i64
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#endif
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) {
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tcg_target_ulong val;
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TCGHelperInfo *th;
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nb_oargs = def->nb_oargs;
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nb_iargs = def->nb_iargs;
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nb_cargs = def->nb_cargs;
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fprintf(outfile, " %s %s,$", def->name,
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tcg_get_arg_str_idx(s, buf, sizeof(buf), args[0]));
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val = args[1];
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th = tcg_find_helper(s, val);
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if (th) {
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fprintf(outfile, th->name);
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} else {
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if (c == INDEX_op_movi_i32)
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fprintf(outfile, "0x%x", (uint32_t)val);
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else
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fprintf(outfile, "0x%" PRIx64 , (uint64_t)val);
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}
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} else {
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fprintf(outfile, " %s ", def->name);
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if (c == INDEX_op_nopn) {
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@ -1281,11 +1302,6 @@ static void check_regs(TCGContext *s)
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dump_regs(s);
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tcg_abort();
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}
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if (ts->val_type == TEMP_VAL_CONST && k < s->nb_globals) {
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printf("constant forbidden in global %s\n",
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tcg_get_arg_str_idx(s, buf, sizeof(buf), k));
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goto fail;
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}
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}
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}
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#endif
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@ -1351,47 +1367,80 @@ static int tcg_reg_alloc(TCGContext *s, TCGRegSet reg1, TCGRegSet reg2)
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}
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/* save globals to their cannonical location and assume they can be
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modified be the following code. */
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static void save_globals(TCGContext *s)
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modified be the following code. 'allocated_regs' is used in case a
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temporary registers needs to be allocated to store a constant. */
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static void save_globals(TCGContext *s, TCGRegSet allocated_regs)
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{
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TCGTemp *ts;
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int i;
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int i, reg;
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for(i = 0; i < s->nb_globals; i++) {
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ts = &s->temps[i];
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if (!ts->fixed_reg) {
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if (ts->val_type == TEMP_VAL_REG) {
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switch(ts->val_type) {
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case TEMP_VAL_REG:
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tcg_reg_free(s, ts->reg);
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} else if (ts->val_type == TEMP_VAL_DEAD) {
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break;
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case TEMP_VAL_DEAD:
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ts->val_type = TEMP_VAL_MEM;
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break;
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case TEMP_VAL_CONST:
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reg = tcg_reg_alloc(s, tcg_target_available_regs[ts->type],
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allocated_regs);
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tcg_out_movi(s, ts->type, reg, ts->val);
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tcg_out_st(s, ts->type, reg, ts->mem_reg, ts->mem_offset);
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ts->val_type = TEMP_VAL_MEM;
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break;
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case TEMP_VAL_MEM:
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break;
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default:
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tcg_abort();
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}
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}
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}
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}
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/* at the end of a basic block, we assume all temporaries are dead and
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all globals are stored at their canonical location */
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/* XXX: optimize by handling constants in another array ? */
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void tcg_reg_alloc_bb_end(TCGContext *s)
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all globals are stored at their canonical location. */
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static void tcg_reg_alloc_bb_end(TCGContext *s, TCGRegSet allocated_regs)
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{
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TCGTemp *ts;
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int i;
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save_globals(s);
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for(i = s->nb_globals; i < s->nb_temps; i++) {
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ts = &s->temps[i];
|
||||
if (ts->val_type != TEMP_VAL_CONST) {
|
||||
if (ts->val_type == TEMP_VAL_REG) {
|
||||
s->reg_to_temp[ts->reg] = -1;
|
||||
}
|
||||
ts->val_type = TEMP_VAL_DEAD;
|
||||
if (ts->val_type == TEMP_VAL_REG) {
|
||||
s->reg_to_temp[ts->reg] = -1;
|
||||
}
|
||||
ts->val_type = TEMP_VAL_DEAD;
|
||||
}
|
||||
|
||||
save_globals(s, allocated_regs);
|
||||
}
|
||||
|
||||
#define IS_DEAD_IARG(n) ((dead_iargs >> (n)) & 1)
|
||||
|
||||
static void tcg_reg_alloc_movi(TCGContext *s, const TCGArg *args)
|
||||
{
|
||||
TCGTemp *ots;
|
||||
tcg_target_ulong val;
|
||||
|
||||
ots = &s->temps[args[0]];
|
||||
val = args[1];
|
||||
|
||||
if (ots->fixed_reg) {
|
||||
/* for fixed registers, we do not do any constant
|
||||
propagation */
|
||||
tcg_out_movi(s, ots->type, ots->reg, val);
|
||||
} else {
|
||||
/* The movi is not explicitely generated here */
|
||||
if (ots->val_type == TEMP_VAL_REG)
|
||||
s->reg_to_temp[ots->reg] = -1;
|
||||
ots->val_type = TEMP_VAL_CONST;
|
||||
ots->val = val;
|
||||
}
|
||||
}
|
||||
|
||||
static void tcg_reg_alloc_mov(TCGContext *s, const TCGOpDef *def,
|
||||
const TCGArg *args,
|
||||
unsigned int dead_iargs)
|
||||
|
|
@ -1404,6 +1453,7 @@ static void tcg_reg_alloc_mov(TCGContext *s, const TCGOpDef *def,
|
|||
ts = &s->temps[args[1]];
|
||||
arg_ct = &def->args_ct[0];
|
||||
|
||||
/* XXX: always mark arg dead if IS_DEAD_IARG(0) */
|
||||
if (ts->val_type == TEMP_VAL_REG) {
|
||||
if (IS_DEAD_IARG(0) && !ts->fixed_reg && !ots->fixed_reg) {
|
||||
/* the mov can be suppressed */
|
||||
|
|
@ -1430,12 +1480,17 @@ static void tcg_reg_alloc_mov(TCGContext *s, const TCGOpDef *def,
|
|||
}
|
||||
tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset);
|
||||
} else if (ts->val_type == TEMP_VAL_CONST) {
|
||||
if (ots->val_type == TEMP_VAL_REG) {
|
||||
if (ots->fixed_reg) {
|
||||
reg = ots->reg;
|
||||
tcg_out_movi(s, ots->type, reg, ts->val);
|
||||
} else {
|
||||
reg = tcg_reg_alloc(s, arg_ct->u.regs, s->reserved_regs);
|
||||
/* propagate constant */
|
||||
if (ots->val_type == TEMP_VAL_REG)
|
||||
s->reg_to_temp[ots->reg] = -1;
|
||||
ots->val_type = TEMP_VAL_CONST;
|
||||
ots->val = ts->val;
|
||||
return;
|
||||
}
|
||||
tcg_out_movi(s, ots->type, reg, ts->val);
|
||||
} else {
|
||||
tcg_abort();
|
||||
}
|
||||
|
|
@ -1487,10 +1542,13 @@ static void tcg_reg_alloc_op(TCGContext *s,
|
|||
new_args[i] = ts->val;
|
||||
goto iarg_end;
|
||||
} else {
|
||||
/* need to move to a register*/
|
||||
/* need to move to a register */
|
||||
reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
|
||||
tcg_out_movi(s, ts->type, reg, ts->val);
|
||||
goto iarg_end1;
|
||||
ts->val_type = TEMP_VAL_REG;
|
||||
ts->reg = reg;
|
||||
ts->mem_coherent = 0;
|
||||
s->reg_to_temp[reg] = arg;
|
||||
}
|
||||
}
|
||||
assert(ts->val_type == TEMP_VAL_REG);
|
||||
|
|
@ -1518,78 +1576,78 @@ static void tcg_reg_alloc_op(TCGContext *s,
|
|||
reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
|
||||
tcg_out_mov(s, reg, ts->reg);
|
||||
}
|
||||
iarg_end1:
|
||||
new_args[i] = reg;
|
||||
const_args[i] = 0;
|
||||
tcg_regset_set_reg(allocated_regs, reg);
|
||||
iarg_end: ;
|
||||
}
|
||||
|
||||
/* mark dead temporaries and free the associated registers */
|
||||
for(i = 0; i < nb_iargs; i++) {
|
||||
arg = args[nb_oargs + i];
|
||||
if (IS_DEAD_IARG(i)) {
|
||||
if (def->flags & TCG_OPF_BB_END) {
|
||||
tcg_reg_alloc_bb_end(s, allocated_regs);
|
||||
} else {
|
||||
/* mark dead temporaries and free the associated registers */
|
||||
for(i = 0; i < nb_iargs; i++) {
|
||||
arg = args[nb_oargs + i];
|
||||
if (IS_DEAD_IARG(i)) {
|
||||
ts = &s->temps[arg];
|
||||
if (!ts->fixed_reg) {
|
||||
if (ts->val_type == TEMP_VAL_REG)
|
||||
s->reg_to_temp[ts->reg] = -1;
|
||||
ts->val_type = TEMP_VAL_DEAD;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (def->flags & TCG_OPF_CALL_CLOBBER) {
|
||||
/* XXX: permit generic clobber register list ? */
|
||||
for(reg = 0; reg < TCG_TARGET_NB_REGS; reg++) {
|
||||
if (tcg_regset_test_reg(tcg_target_call_clobber_regs, reg)) {
|
||||
tcg_reg_free(s, reg);
|
||||
}
|
||||
}
|
||||
/* XXX: for load/store we could do that only for the slow path
|
||||
(i.e. when a memory callback is called) */
|
||||
|
||||
/* store globals and free associated registers (we assume the insn
|
||||
can modify any global. */
|
||||
save_globals(s, allocated_regs);
|
||||
}
|
||||
|
||||
/* satisfy the output constraints */
|
||||
tcg_regset_set(allocated_regs, s->reserved_regs);
|
||||
for(k = 0; k < nb_oargs; k++) {
|
||||
i = def->sorted_args[k];
|
||||
arg = args[i];
|
||||
arg_ct = &def->args_ct[i];
|
||||
ts = &s->temps[arg];
|
||||
if (ts->val_type != TEMP_VAL_CONST && !ts->fixed_reg) {
|
||||
if (arg_ct->ct & TCG_CT_ALIAS) {
|
||||
reg = new_args[arg_ct->alias_index];
|
||||
} else {
|
||||
/* if fixed register, we try to use it */
|
||||
reg = ts->reg;
|
||||
if (ts->fixed_reg &&
|
||||
tcg_regset_test_reg(arg_ct->u.regs, reg)) {
|
||||
goto oarg_end;
|
||||
}
|
||||
reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
|
||||
}
|
||||
tcg_regset_set_reg(allocated_regs, reg);
|
||||
/* if a fixed register is used, then a move will be done afterwards */
|
||||
if (!ts->fixed_reg) {
|
||||
if (ts->val_type == TEMP_VAL_REG)
|
||||
s->reg_to_temp[ts->reg] = -1;
|
||||
ts->val_type = TEMP_VAL_DEAD;
|
||||
ts->val_type = TEMP_VAL_REG;
|
||||
ts->reg = reg;
|
||||
/* temp value is modified, so the value kept in memory is
|
||||
potentially not the same */
|
||||
ts->mem_coherent = 0;
|
||||
s->reg_to_temp[reg] = arg;
|
||||
}
|
||||
oarg_end:
|
||||
new_args[i] = reg;
|
||||
}
|
||||
}
|
||||
|
||||
if (def->flags & TCG_OPF_CALL_CLOBBER) {
|
||||
/* XXX: permit generic clobber register list ? */
|
||||
for(reg = 0; reg < TCG_TARGET_NB_REGS; reg++) {
|
||||
if (tcg_regset_test_reg(tcg_target_call_clobber_regs, reg)) {
|
||||
tcg_reg_free(s, reg);
|
||||
}
|
||||
}
|
||||
/* XXX: for load/store we could do that only for the slow path
|
||||
(i.e. when a memory callback is called) */
|
||||
|
||||
/* store globals and free associated registers (we assume the insn
|
||||
can modify any global. */
|
||||
save_globals(s);
|
||||
}
|
||||
|
||||
/* satisfy the output constraints */
|
||||
tcg_regset_set(allocated_regs, s->reserved_regs);
|
||||
for(k = 0; k < nb_oargs; k++) {
|
||||
i = def->sorted_args[k];
|
||||
arg = args[i];
|
||||
arg_ct = &def->args_ct[i];
|
||||
ts = &s->temps[arg];
|
||||
if (arg_ct->ct & TCG_CT_ALIAS) {
|
||||
reg = new_args[arg_ct->alias_index];
|
||||
} else {
|
||||
/* if fixed register, we try to use it */
|
||||
reg = ts->reg;
|
||||
if (ts->fixed_reg &&
|
||||
tcg_regset_test_reg(arg_ct->u.regs, reg)) {
|
||||
goto oarg_end;
|
||||
}
|
||||
reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
|
||||
}
|
||||
tcg_regset_set_reg(allocated_regs, reg);
|
||||
/* if a fixed register is used, then a move will be done afterwards */
|
||||
if (!ts->fixed_reg) {
|
||||
if (ts->val_type == TEMP_VAL_REG)
|
||||
s->reg_to_temp[ts->reg] = -1;
|
||||
ts->val_type = TEMP_VAL_REG;
|
||||
ts->reg = reg;
|
||||
/* temp value is modified, so the value kept in memory is
|
||||
potentially not the same */
|
||||
ts->mem_coherent = 0;
|
||||
s->reg_to_temp[reg] = arg;
|
||||
}
|
||||
oarg_end:
|
||||
new_args[i] = reg;
|
||||
}
|
||||
|
||||
if (def->flags & TCG_OPF_BB_END)
|
||||
tcg_reg_alloc_bb_end(s);
|
||||
|
||||
/* emit instruction */
|
||||
tcg_out_op(s, opc, new_args, const_args);
|
||||
|
||||
|
|
@ -1708,6 +1766,7 @@ static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def,
|
|||
reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
|
||||
tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset);
|
||||
func_arg = reg;
|
||||
tcg_regset_set_reg(allocated_regs, reg);
|
||||
} else if (ts->val_type == TEMP_VAL_REG) {
|
||||
reg = ts->reg;
|
||||
if (!tcg_regset_test_reg(arg_ct->u.regs, reg)) {
|
||||
|
|
@ -1715,6 +1774,7 @@ static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def,
|
|||
tcg_out_mov(s, reg, ts->reg);
|
||||
}
|
||||
func_arg = reg;
|
||||
tcg_regset_set_reg(allocated_regs, reg);
|
||||
} else if (ts->val_type == TEMP_VAL_CONST) {
|
||||
if (tcg_target_const_match(func_addr, arg_ct)) {
|
||||
const_func_arg = 1;
|
||||
|
|
@ -1723,17 +1783,19 @@ static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def,
|
|||
reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
|
||||
tcg_out_movi(s, ts->type, reg, func_addr);
|
||||
func_arg = reg;
|
||||
tcg_regset_set_reg(allocated_regs, reg);
|
||||
}
|
||||
} else {
|
||||
tcg_abort();
|
||||
}
|
||||
|
||||
|
||||
/* mark dead temporaries and free the associated registers */
|
||||
for(i = 0; i < nb_iargs; i++) {
|
||||
arg = args[nb_oargs + i];
|
||||
if (IS_DEAD_IARG(i)) {
|
||||
ts = &s->temps[arg];
|
||||
if (ts->val_type != TEMP_VAL_CONST && !ts->fixed_reg) {
|
||||
if (!ts->fixed_reg) {
|
||||
if (ts->val_type == TEMP_VAL_REG)
|
||||
s->reg_to_temp[ts->reg] = -1;
|
||||
ts->val_type = TEMP_VAL_DEAD;
|
||||
|
|
@ -1750,7 +1812,7 @@ static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def,
|
|||
|
||||
/* store globals and free associated registers (we assume the call
|
||||
can modify any global. */
|
||||
save_globals(s);
|
||||
save_globals(s, allocated_regs);
|
||||
|
||||
tcg_out_op(s, opc, &func_arg, &const_func_arg);
|
||||
|
||||
|
|
@ -1763,7 +1825,7 @@ static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def,
|
|||
arg = args[i];
|
||||
ts = &s->temps[arg];
|
||||
reg = tcg_target_call_oarg_regs[i];
|
||||
tcg_reg_free(s, reg);
|
||||
assert(s->reg_to_temp[reg] == -1);
|
||||
if (ts->fixed_reg) {
|
||||
if (ts->reg != reg) {
|
||||
tcg_out_mov(s, ts->reg, reg);
|
||||
|
|
@ -1863,6 +1925,12 @@ static inline int tcg_gen_code_common(TCGContext *s, uint8_t *gen_code_buf,
|
|||
dead_iargs = s->op_dead_iargs[op_index];
|
||||
tcg_reg_alloc_mov(s, def, args, dead_iargs);
|
||||
break;
|
||||
case INDEX_op_movi_i32:
|
||||
#if TCG_TARGET_REG_BITS == 64
|
||||
case INDEX_op_movi_i64:
|
||||
#endif
|
||||
tcg_reg_alloc_movi(s, args);
|
||||
break;
|
||||
case INDEX_op_debug_insn_start:
|
||||
/* debug instruction */
|
||||
break;
|
||||
|
|
@ -1879,7 +1947,7 @@ static inline int tcg_gen_code_common(TCGContext *s, uint8_t *gen_code_buf,
|
|||
TCGTemp *ts;
|
||||
ts = &s->temps[args[0]];
|
||||
/* mark the temporary as dead */
|
||||
if (ts->val_type != TEMP_VAL_CONST && !ts->fixed_reg) {
|
||||
if (!ts->fixed_reg) {
|
||||
if (ts->val_type == TEMP_VAL_REG)
|
||||
s->reg_to_temp[ts->reg] = -1;
|
||||
ts->val_type = TEMP_VAL_DEAD;
|
||||
|
|
@ -1900,7 +1968,7 @@ static inline int tcg_gen_code_common(TCGContext *s, uint8_t *gen_code_buf,
|
|||
/* must never happen here */
|
||||
tcg_abort();
|
||||
case INDEX_op_set_label:
|
||||
tcg_reg_alloc_bb_end(s);
|
||||
tcg_reg_alloc_bb_end(s, s->reserved_regs);
|
||||
tcg_out_label(s, args[0], (long)s->code_ptr);
|
||||
break;
|
||||
case INDEX_op_call:
|
||||
|
|
@ -1916,7 +1984,7 @@ static inline int tcg_gen_code_common(TCGContext *s, uint8_t *gen_code_buf,
|
|||
#ifdef CONFIG_PROFILER
|
||||
s->old_op_count++;
|
||||
#endif
|
||||
tcg_reg_alloc_bb_end(s);
|
||||
tcg_reg_alloc_bb_end(s, s->reserved_regs);
|
||||
if (search_pc >= 0) {
|
||||
s->code_ptr += def->copy_size;
|
||||
args += def->nb_args;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue