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-rw-r--r--erts/emulator/beam/beam_debug.c21
-rw-r--r--erts/emulator/beam/beam_emu.c50
-rw-r--r--erts/emulator/beam/beam_load.c105
-rw-r--r--erts/emulator/beam/ops.tab4
4 files changed, 180 insertions, 0 deletions
diff --git a/erts/emulator/beam/beam_debug.c b/erts/emulator/beam/beam_debug.c
index a2060c80de..74e6ab8bc5 100644
--- a/erts/emulator/beam/beam_debug.c
+++ b/erts/emulator/beam/beam_debug.c
@@ -718,6 +718,27 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
}
}
break;
+ case op_i_new_small_map_lit_dIq:
+ {
+ Eterm *tp = tuple_val(unpacked[-1]);
+ int n = arityval(*tp);
+
+ while (n > 0) {
+ switch (loader_tag(ap[0])) {
+ case LOADER_X_REG:
+ erts_print(to, to_arg, " x(%d)", loader_x_reg_index(ap[0]));
+ break;
+ case LOADER_Y_REG:
+ erts_print(to, to_arg, " x(%d)", loader_y_reg_index(ap[0]));
+ break;
+ default:
+ erts_print(to, to_arg, " %T", (Eterm) ap[0]);
+ break;
+ }
+ ap++, size++, n--;
+ }
+ }
+ break;
case op_i_get_map_elements_fsI:
{
int n = unpacked[-1];
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index 872fba6899..507aa7636c 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -1080,6 +1080,7 @@ static BeamInstr* apply_fun(Process* p, Eterm fun,
static Eterm new_fun(Process* p, Eterm* reg,
ErlFunEntry* fe, int num_free) NOINLINE;
static Eterm new_map(Process* p, Eterm* reg, BeamInstr* I) NOINLINE;
+static Eterm new_small_map_lit(Process* p, Eterm* reg, Uint* n_exp, BeamInstr* I) NOINLINE;
static Eterm update_map_assoc(Process* p, Eterm* reg,
Eterm map, BeamInstr* I) NOINLINE;
static Eterm update_map_exact(Process* p, Eterm* reg,
@@ -2461,6 +2462,17 @@ void process_main(Eterm * x_reg_array, FloatDef* f_reg_array)
Next(3+Arg(2));
}
+ OpCase(i_new_small_map_lit_dIq): {
+ Eterm res;
+ Uint n;
+
+ HEAVY_SWAPOUT;
+ res = new_small_map_lit(c_p, reg, &n, I-1);
+ HEAVY_SWAPIN;
+ StoreResult(res, Arg(0));
+ Next(3+n);
+ }
+
#define PUT_TERM_REG(term, desc) \
do { \
switch (loader_tag(desc)) { \
@@ -7007,6 +7019,44 @@ new_map(Process* p, Eterm* reg, BeamInstr* I)
}
static Eterm
+new_small_map_lit(Process* p, Eterm* reg, Uint* n_exp, BeamInstr* I)
+{
+ Eterm* keys = tuple_val(Arg(3));
+ Uint n = arityval(*keys);
+ Uint need = n + 1 /* hdr */ + 1 /*size*/ + 1 /* ptr */ + 1 /* arity */;
+ Uint i;
+ BeamInstr *ptr;
+ flatmap_t *mp;
+ Eterm *mhp;
+ Eterm *E;
+
+ *n_exp = n;
+ ptr = &Arg(4);
+
+ ASSERT(n <= MAP_SMALL_MAP_LIMIT);
+
+ if (HeapWordsLeft(p) < need) {
+ erts_garbage_collect(p, need, reg, Arg(2));
+ }
+
+ mhp = p->htop;
+ E = p->stop;
+
+ mp = (flatmap_t *)mhp; mhp += MAP_HEADER_FLATMAP_SZ;
+ mp->thing_word = MAP_HEADER_FLATMAP;
+ mp->size = n;
+ mp->keys = Arg(3);
+
+ for (i = 0; i < n; i++) {
+ GET_TERM(*ptr++, *mhp++);
+ }
+
+ p->htop = mhp;
+
+ return make_flatmap(mp);
+}
+
+static Eterm
update_map_assoc(Process* p, Eterm* reg, Eterm map, BeamInstr* I)
{
Uint n;
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 23258dbe9c..71637cf4d6 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -537,6 +537,7 @@ static int get_tag_and_value(LoaderState* stp, Uint len_code,
static int new_label(LoaderState* stp);
static void new_literal_patch(LoaderState* stp, int pos);
static void new_string_patch(LoaderState* stp, int pos);
+static int find_literal(LoaderState* stp, Eterm needle, Uint *idx);
static Uint new_literal(LoaderState* stp, Eterm** hpp, Uint heap_size);
static int genopargcompare(GenOpArg* a, GenOpArg* b);
static Eterm get_module_info(Process* p, ErtsCodeIndex code_ix,
@@ -4222,6 +4223,92 @@ literal_is_map(LoaderState* stp, GenOpArg Lit)
}
/*
+ * Predicate to test whether all of the given new small map keys are literals
+ */
+static int
+is_small_map_literal_keys(LoaderState* stp, GenOpArg Size, GenOpArg* Rest)
+{
+ if (Size.val > MAP_SMALL_MAP_LIMIT) {
+ return 0;
+ }
+
+ /*
+ * Operations with non-literals have always only one key.
+ */
+ if (Size.val != 2) {
+ return 1;
+ }
+
+ switch (Rest[0].type) {
+ case TAG_a:
+ case TAG_i:
+ case TAG_n:
+ case TAG_q:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static GenOp*
+gen_new_small_map_lit(LoaderState* stp, GenOpArg Dst, GenOpArg Live,
+ GenOpArg Size, GenOpArg* Rest)
+{
+ unsigned size = Size.val;
+ Uint lit;
+ unsigned i;
+ GenOp* op;
+ GenOpArg* dst;
+ Eterm* hp;
+ Eterm* tmp;
+ Eterm* thp;
+ Eterm keys;
+
+ NEW_GENOP(stp, op);
+ GENOP_ARITY(op, 3 + size/2);
+ op->next = NULL;
+ op->op = genop_i_new_small_map_lit_3;
+
+ tmp = thp = erts_alloc(ERTS_ALC_T_LOADER_TMP, (1 + size/2) * sizeof(*tmp));
+ keys = make_tuple(thp);
+ *thp++ = make_arityval(size/2);
+
+ dst = op->a+3;
+
+ for (i = 0; i < size; i += 2) {
+ switch (Rest[i].type) {
+ case TAG_a:
+ *thp++ = Rest[i].val;
+ ASSERT(is_atom(Rest[i].val));
+ break;
+ case TAG_i:
+ *thp++ = make_small(Rest[i].val);
+ break;
+ case TAG_n:
+ *thp++ = NIL;
+ break;
+ case TAG_q:
+ *thp++ = stp->literals[Rest[i].val].term;
+ break;
+ }
+ *dst++ = Rest[i + 1];
+ }
+
+ if (!find_literal(stp, keys, &lit)) {
+ lit = new_literal(stp, &hp, 1 + size/2);
+ sys_memcpy(hp, tmp, (1 + size/2) * sizeof(*tmp));
+ }
+ erts_free(ERTS_ALC_T_LOADER_TMP, tmp);
+
+ op->a[0] = Dst;
+ op->a[1] = Live;
+ op->a[2].type = TAG_q;
+ op->a[2].val = lit;
+
+ return op;
+}
+
+/*
* Predicate to test whether the given literal is an empty map.
*/
@@ -5509,6 +5596,24 @@ new_literal(LoaderState* stp, Eterm** hpp, Uint heap_size)
return stp->num_literals++;
}
+static int
+find_literal(LoaderState* stp, Eterm needle, Uint *idx)
+{
+ int i;
+
+ /*
+ * The search is done backwards since the most recent literals
+ * allocated by the loader itself will be placed at the end
+ */
+ for (i = stp->num_literals - 1; i >= 0; i--) {
+ if (EQ(needle, stp->literals[i].term)) {
+ *idx = (Uint) i;
+ return 1;
+ }
+ }
+ return 0;
+}
+
Eterm
erts_module_info_0(Process* p, Eterm module)
{
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab
index 4ce86ce949..ed856b760b 100644
--- a/erts/emulator/beam/ops.tab
+++ b/erts/emulator/beam/ops.tab
@@ -1425,7 +1425,11 @@ sorted_put_map_exact F Src=s Dst Live Size Rest=* => \
sorted_put_map_exact F Src Dst Live Size Rest=* => \
move Src x | update_map_exact F x Dst Live Size Rest
+new_map Dst Live Size Rest=* | is_small_map_literal_keys(Size, Rest) => \
+ gen_new_small_map_lit(Dst, Live, Size, Rest)
+
new_map d I I
+i_new_small_map_lit d I q
update_map_assoc j s d I I
update_map_exact j s d I I
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-13 02:04:00 +0000