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ircode.c
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ircode.c
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// This file is a part of Julia. License is MIT: https://julialang.org/license
/*
encoding IR to/from compact representation
*/
#include <stdlib.h>
#include <string.h>
#include "julia.h"
#include "julia_internal.h"
#include "serialize.h"
#ifndef _OS_WINDOWS_
#include <dlfcn.h>
#endif
#include "valgrind.h"
#include "julia_assert.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
ios_t *s;
// method we're compressing for
jl_method_t *method;
jl_ptls_t ptls;
uint8_t relocatability;
} jl_ircode_state;
// type => tag hash for a few core types (e.g., Expr, PhiNode, etc)
static htable_t ser_tag;
// tag => type mapping, the reverse of ser_tag
static jl_value_t *deser_tag[256];
// hash of some common symbols, encoded as CommonSym_tag plus 1 byte
static htable_t common_symbol_tag;
static jl_value_t *deser_symbols[256];
void *jl_lookup_ser_tag(jl_value_t *v)
{
return ptrhash_get(&ser_tag, v);
}
void *jl_lookup_common_symbol(jl_value_t *v)
{
return ptrhash_get(&common_symbol_tag, v);
}
jl_value_t *jl_deser_tag(uint8_t tag)
{
return deser_tag[tag];
}
jl_value_t *jl_deser_symbol(uint8_t tag)
{
return deser_symbols[tag];
}
// --- encoding ---
static void jl_encode_value_(jl_ircode_state *s, jl_value_t *v, int as_literal) JL_GC_DISABLED;
#define jl_encode_value(s, v) jl_encode_value_((s), (jl_value_t*)(v), 0)
static void tagged_root(rle_reference *rr, jl_ircode_state *s, int i)
{
if (!get_root_reference(rr, s->method, i))
s->relocatability = 0;
}
static void literal_val_id(rle_reference *rr, jl_ircode_state *s, jl_value_t *v) JL_GC_DISABLED
{
jl_array_t *rs = s->method->roots;
int i, l = jl_array_nrows(rs);
if (jl_is_symbol(v) || jl_is_concrete_type(v)) {
for (i = 0; i < l; i++) {
if (jl_array_ptr_ref(rs, i) == v)
return tagged_root(rr, s, i);
}
}
else {
for (i = 0; i < l; i++) {
if (jl_egal(jl_array_ptr_ref(rs, i), v))
return tagged_root(rr, s, i);
}
}
jl_add_method_root(s->method, jl_precompile_toplevel_module, v);
return tagged_root(rr, s, jl_array_nrows(rs) - 1);
}
static void jl_encode_int32(jl_ircode_state *s, int32_t x)
{
if (x >= INT16_MIN && x <= INT16_MAX) {
write_uint8(s->s, TAG_SHORT_INT32);
write_uint16(s->s, (uint16_t)x);
}
else {
write_uint8(s->s, TAG_INT32);
write_int32(s->s, x);
}
}
static void jl_encode_as_indexed_root(jl_ircode_state *s, jl_value_t *v)
{
rle_reference rr;
if (jl_is_string(v))
v = jl_as_global_root(v, 1);
literal_val_id(&rr, s, v);
int id = rr.index;
assert(id >= 0);
if (rr.key) {
write_uint8(s->s, TAG_RELOC_METHODROOT);
write_uint64(s->s, rr.key);
}
if (id <= UINT8_MAX) {
write_uint8(s->s, TAG_METHODROOT);
write_uint8(s->s, id);
}
else {
assert(id <= UINT32_MAX);
write_uint8(s->s, TAG_LONG_METHODROOT);
write_uint32(s->s, id);
}
}
static void jl_encode_memory_slice(jl_ircode_state *s, jl_genericmemory_t *mem, size_t offset, size_t len) JL_GC_DISABLED
{
jl_datatype_t *t = (jl_datatype_t*)jl_typetagof(mem);
size_t i;
const jl_datatype_layout_t *layout = t->layout;
if (layout->flags.arrayelem_isboxed) {
for (i = 0; i < len; i++) {
jl_value_t *e = jl_genericmemory_ptr_ref(mem, offset + i);
jl_encode_value(s, e);
}
}
else if (layout->first_ptr >= 0) {
uint16_t elsz = layout->size;
size_t j, np = layout->npointers;
const char *data = (const char*)mem->ptr + offset * elsz;
for (i = 0; i < len; i++) {
const char *start = data;
for (j = 0; j < np; j++) {
uint32_t ptr = jl_ptr_offset(t, j);
const jl_value_t *const *fld = &((const jl_value_t *const *)data)[ptr];
if ((const char*)fld != start)
ios_write(s->s, start, (const char*)fld - start);
JL_GC_PROMISE_ROOTED(*fld);
jl_encode_value(s, *fld);
start = (const char*)&fld[1];
}
data += elsz;
if (data != start)
ios_write(s->s, start, data - start);
}
}
else {
ios_write(s->s, (char*)mem->ptr + offset * layout->size, len * layout->size);
if (layout->flags.arrayelem_isunion)
ios_write(s->s, jl_genericmemory_typetagdata(mem) + offset, len);
}
}
static void jl_encode_value_(jl_ircode_state *s, jl_value_t *v, int as_literal) JL_GC_DISABLED
{
size_t i;
if (v == NULL) {
write_uint8(s->s, TAG_NULL);
return;
}
void *tag = jl_lookup_ser_tag(v);
if (tag != HT_NOTFOUND) {
uint8_t t8 = (intptr_t)tag;
if (t8 <= LAST_TAG)
write_uint8(s->s, 0);
write_uint8(s->s, t8);
}
else if (jl_is_symbol(v) && (tag = jl_lookup_common_symbol(v)) != HT_NOTFOUND) {
write_uint8(s->s, TAG_COMMONSYM);
write_uint8(s->s, (uint8_t)(size_t)tag);
}
else if (v == (jl_value_t*)jl_core_module) {
write_uint8(s->s, TAG_CORE);
}
else if (v == (jl_value_t*)jl_base_module) {
write_uint8(s->s, TAG_BASE);
}
else if (jl_typetagis(v, jl_string_tag << 4) && jl_string_len(v) == 0) {
jl_encode_value(s, jl_an_empty_string);
}
else if (v == (jl_value_t*)s->method->module) {
write_uint8(s->s, TAG_NEARBYMODULE);
}
else if (jl_is_datatype(v) && ((jl_datatype_t*)v)->name == jl_array_typename &&
jl_is_long(jl_tparam1(v)) && jl_unbox_long(jl_tparam1(v)) == 1 &&
!((jl_datatype_t*)v)->hasfreetypevars) {
write_uint8(s->s, TAG_VECTORTY);
jl_encode_value(s, jl_tparam0(v));
}
else if (jl_is_datatype(v) && ((jl_datatype_t*)v)->name == jl_pointer_typename &&
!((jl_datatype_t*)v)->hasfreetypevars) {
write_uint8(s->s, TAG_PTRTY);
jl_encode_value(s, jl_tparam0(v));
}
else if (jl_is_svec(v)) {
size_t l = jl_svec_len(v);
if (l <= 255) {
write_uint8(s->s, TAG_SVEC);
write_uint8(s->s, (uint8_t)l);
}
else {
write_uint8(s->s, TAG_LONG_SVEC);
write_int32(s->s, l);
}
for (i = 0; i < l; i++) {
jl_encode_value(s, jl_svecref(v, i));
}
}
else if (jl_is_globalref(v)) {
if (jl_globalref_mod(v) == s->method->module) {
write_uint8(s->s, TAG_NEARBYGLOBAL);
jl_encode_value(s, jl_globalref_name(v));
}
else {
write_uint8(s->s, TAG_GLOBALREF);
jl_encode_value(s, jl_globalref_mod(v));
jl_encode_value(s, jl_globalref_name(v));
}
}
else if (jl_is_ssavalue(v) && ((jl_ssavalue_t*)v)->id < 256 && ((jl_ssavalue_t*)v)->id >= 0) {
write_uint8(s->s, TAG_SSAVALUE);
write_uint8(s->s, ((jl_ssavalue_t*)v)->id);
}
else if (jl_is_ssavalue(v) && ((jl_ssavalue_t*)v)->id <= UINT16_MAX && ((jl_ssavalue_t*)v)->id >= 0) {
write_uint8(s->s, TAG_LONG_SSAVALUE);
write_uint16(s->s, ((jl_ssavalue_t*)v)->id);
}
else if (jl_typetagis(v, jl_slotnumber_type) && jl_slot_number(v) <= UINT16_MAX && jl_slot_number(v) >= 0) {
write_uint8(s->s, TAG_SLOTNUMBER);
write_uint16(s->s, jl_slot_number(v));
}
else if (jl_is_expr(v)) {
jl_expr_t *e = (jl_expr_t*)v;
size_t l = jl_array_nrows(e->args);
if (e->head == jl_call_sym) {
if (l == 2) {
write_uint8(s->s, TAG_CALL1);
jl_encode_value(s, jl_exprarg(e, 0));
jl_encode_value(s, jl_exprarg(e, 1));
return;
}
else if (l == 3) {
write_uint8(s->s, TAG_CALL2);
jl_encode_value(s, jl_exprarg(e, 0));
jl_encode_value(s, jl_exprarg(e, 1));
jl_encode_value(s, jl_exprarg(e, 2));
return;
}
}
if (l <= 255) {
write_uint8(s->s, TAG_EXPR);
write_uint8(s->s, (uint8_t)l);
}
else {
write_uint8(s->s, TAG_LONG_EXPR);
write_int32(s->s, l);
}
jl_encode_value(s, e->head);
for (i = 0; i < l; i++) {
jl_encode_value(s, jl_exprarg(e, i));
}
}
else if (jl_is_phinode(v)) {
jl_array_t *edges = (jl_array_t*)jl_fieldref_noalloc(v, 0);
jl_array_t *values = (jl_array_t*)jl_fieldref_noalloc(v, 1);
size_t l = jl_array_nrows(edges);
if (l <= 255 && jl_array_nrows(values) == l) {
write_uint8(s->s, TAG_PHINODE);
write_uint8(s->s, (uint8_t)l);
}
else {
write_uint8(s->s, TAG_LONG_PHINODE);
write_int32(s->s, l);
write_int32(s->s, jl_array_nrows(values));
}
for (i = 0; i < l; i++) {
int32_t e = jl_array_data(edges, int32_t)[i];
if (e <= 20)
jl_encode_value(s, jl_box_int32(e));
else
jl_encode_int32(s, e);
}
l = jl_array_nrows(values);
for (i = 0; i < l; i++) {
jl_encode_value(s, jl_array_ptr_ref(values, i));
}
}
else if (jl_is_phicnode(v)) {
jl_array_t *values = (jl_array_t*)jl_fieldref_noalloc(v, 0);
size_t l = jl_array_nrows(values);
if (l <= 255) {
write_uint8(s->s, TAG_PHICNODE);
write_uint8(s->s, (uint8_t)l);
}
else {
write_uint8(s->s, TAG_LONG_PHICNODE);
write_int32(s->s, l);
}
for (i = 0; i < l; i++) {
jl_encode_value(s, jl_array_ptr_ref(values, i));
}
}
else if (jl_is_gotonode(v)) {
write_uint8(s->s, TAG_GOTONODE);
jl_encode_value(s, jl_get_nth_field(v, 0));
}
else if (jl_is_gotoifnot(v)) {
write_uint8(s->s, TAG_GOTOIFNOT);
jl_encode_value(s, jl_get_nth_field(v, 0));
jl_encode_value(s, jl_get_nth_field(v, 1));
}
else if (jl_is_argument(v)) {
write_uint8(s->s, TAG_ARGUMENT);
jl_encode_value(s, jl_get_nth_field(v, 0));
}
else if (jl_is_returnnode(v)) {
write_uint8(s->s, TAG_RETURNNODE);
jl_encode_value(s, jl_get_nth_field(v, 0));
}
else if (jl_is_quotenode(v)) {
write_uint8(s->s, TAG_QUOTENODE);
jl_value_t *inner = jl_quotenode_value(v);
// we might need to return this exact object at run time, therefore codegen might
// need to reference it as well, so it is more likely useful to give it a root
if (jl_is_expr(inner) || jl_is_phinode(inner) || jl_is_phicnode(inner))
jl_encode_as_indexed_root(s, inner);
else
jl_encode_value(s, inner);
}
else if (jl_typetagis(v, jl_int64_tag << 4)) {
void *data = jl_data_ptr(v);
if (*(int64_t*)data >= INT16_MIN && *(int64_t*)data <= INT16_MAX) {
write_uint8(s->s, TAG_SHORTER_INT64);
write_uint16(s->s, (uint16_t)*(int64_t*)data);
}
else if (*(int64_t*)data >= S32_MIN && *(int64_t*)data <= S32_MAX) {
write_uint8(s->s, TAG_SHORT_INT64);
write_int32(s->s, (int32_t)*(int64_t*)data);
}
else {
write_uint8(s->s, TAG_INT64);
write_uint64(s->s, *(int64_t*)data);
}
}
else if (jl_typetagis(v, jl_int32_tag << 4)) {
jl_encode_int32(s, *(int32_t*)jl_data_ptr(v));
}
else if (jl_typetagis(v, jl_uint8_tag << 4)) {
write_uint8(s->s, TAG_UINT8);
write_int8(s->s, *(int8_t*)jl_data_ptr(v));
}
else if (jl_typetagis(v, jl_lineinfonode_type)) {
write_uint8(s->s, TAG_LINEINFO);
for (i = 0; i < jl_datatype_nfields(jl_lineinfonode_type); i++)
jl_encode_value(s, jl_get_nth_field(v, i));
}
else if (((jl_datatype_t*)jl_typeof(v))->instance == v) {
write_uint8(s->s, TAG_SINGLETON);
jl_encode_value(s, jl_typeof(v));
}
else if (as_literal && jl_typetagis(v, jl_string_tag << 4)) {
write_uint8(s->s, TAG_STRING);
write_int32(s->s, jl_string_len(v));
ios_write(s->s, jl_string_data(v), jl_string_len(v));
}
else if (as_literal && jl_is_array(v)) {
jl_array_t *ar = (jl_array_t*)v;
if (jl_array_ndims(ar) == 1) {
write_uint8(s->s, TAG_ARRAY1D);
}
else {
write_uint8(s->s, TAG_ARRAY);
write_uint16(s->s, jl_array_ndims(ar));
}
for (i = 0; i < jl_array_ndims(ar); i++)
jl_encode_value(s, jl_box_long(jl_array_dim(ar, i)));
jl_encode_value(s, jl_typeof(ar));
size_t l = jl_array_len(ar);
const jl_datatype_layout_t *layout = ((jl_datatype_t*)jl_typetagof(ar->ref.mem))->layout;
size_t offset;
if (layout->flags.arrayelem_isunion || layout->size == 0)
offset = (uintptr_t)ar->ref.ptr_or_offset;
else
offset = ((char*)ar->ref.ptr_or_offset - (char*)ar->ref.mem->ptr) / layout->size;
jl_encode_memory_slice(s, ar->ref.mem, offset, l);
}
else if (as_literal && jl_is_genericmemory(v)) {
jl_genericmemory_t* m = (jl_genericmemory_t*)v;
write_uint8(s->s, TAG_MEMORYT);
jl_encode_value(s, (jl_datatype_t*)jl_typetagof(v));
jl_encode_value(s, jl_box_long(m->length));
jl_encode_memory_slice(s, m, 0, m->length);
}
else if (as_literal && jl_is_layout_opaque(((jl_datatype_t*)jl_typeof(v))->layout)) {
assert(0 && "not legal to store this as literal");
}
else if (as_literal || jl_is_uniontype(v) || jl_is_newvarnode(v) || jl_is_linenode(v) ||
jl_is_upsilonnode(v) || jl_is_pinode(v) || jl_is_slotnumber(v) || jl_is_ssavalue(v) ||
(jl_isbits(jl_typeof(v)) && jl_datatype_size(jl_typeof(v)) <= 64)) {
jl_datatype_t *t = (jl_datatype_t*)jl_typeof(v);
size_t tsz = jl_datatype_size(t);
if (tsz <= 255) {
write_uint8(s->s, TAG_SHORT_GENERAL);
write_uint8(s->s, tsz);
}
else {
write_uint8(s->s, TAG_GENERAL);
write_int32(s->s, tsz);
}
jl_encode_value(s, t);
char *data = (char*)jl_data_ptr(v);
size_t i, j, np = t->layout->npointers;
uint32_t nf = t->layout->nfields;
char *last = data;
for (i = 0, j = 0; i < nf+1; i++) {
char *ptr = data + (i < nf ? jl_field_offset(t, i) : jl_datatype_size(t));
if (j < np) {
char *prevptr = (char*)&((jl_value_t**)data)[jl_ptr_offset(t, j)];
while (ptr > prevptr) {
// previous field contained pointers; write them and their interleaved data
if (prevptr > last)
ios_write(s->s, last, prevptr - last);
jl_value_t *e = *(jl_value_t**)prevptr;
JL_GC_PROMISE_ROOTED(e);
jl_encode_value(s, e);
last = prevptr + sizeof(jl_value_t*);
j++;
if (j < np)
prevptr = (char*)&((jl_value_t**)data)[jl_ptr_offset(t, j)];
else
break;
}
}
if (i == nf)
break;
}
char *ptr = data + jl_datatype_size(t);
if (ptr > last)
ios_write(s->s, last, ptr - last);
}
else {
jl_encode_as_indexed_root(s, v);
}
}
static jl_code_info_flags_t code_info_flags(uint8_t inferred, uint8_t propagate_inbounds, uint8_t has_fcall,
uint8_t nospecializeinfer, uint8_t inlining, uint8_t constprop)
{
jl_code_info_flags_t flags;
flags.bits.inferred = inferred;
flags.bits.propagate_inbounds = propagate_inbounds;
flags.bits.has_fcall = has_fcall;
flags.bits.nospecializeinfer = nospecializeinfer;
flags.bits.inlining = inlining;
flags.bits.constprop = constprop;
return flags;
}
// --- decoding ---
static jl_value_t *jl_decode_value(jl_ircode_state *s) JL_GC_DISABLED;
static jl_value_t *jl_decode_value_svec(jl_ircode_state *s, uint8_t tag) JL_GC_DISABLED
{
size_t i, len;
if (tag == TAG_SVEC)
len = read_uint8(s->s);
else
len = read_int32(s->s);
jl_svec_t *sv = jl_alloc_svec_uninit(len);
jl_value_t **data = jl_svec_data(sv);
for (i = 0; i < len; i++) {
data[i] = jl_decode_value(s);
}
return (jl_value_t*)sv;
}
static jl_value_t *jl_decode_value_memory(jl_ircode_state *s, jl_value_t *mty, size_t nel) JL_GC_DISABLED
{
jl_genericmemory_t *m = jl_alloc_genericmemory(mty, nel);
const jl_datatype_layout_t *layout = ((jl_datatype_t*)mty)->layout;
if (layout->flags.arrayelem_isboxed) {
jl_value_t **data = (jl_value_t**)m->ptr;
size_t i, numel = m->length;
for (i = 0; i < numel; i++) {
data[i] = jl_decode_value(s);
}
assert(jl_astaggedvalue(m)->bits.gc == GC_CLEAN); // gc is disabled
}
else if (layout->first_ptr >= 0) {
size_t i, numel = m->length;
char *data = (char*)m->ptr;
uint16_t elsz = layout->size;
size_t j, np = layout->npointers;
for (i = 0; i < numel; i++) {
char *start = data;
for (j = 0; j < np; j++) {
uint32_t ptr = jl_ptr_offset((jl_datatype_t*)mty, j);
jl_value_t **fld = &((jl_value_t**)data)[ptr];
if ((char*)fld != start)
ios_readall(s->s, start, (const char*)fld - start);
*fld = jl_decode_value(s);
start = (char*)&fld[1];
}
data += elsz;
if (data != start)
ios_readall(s->s, start, data - start);
}
assert(jl_astaggedvalue(m)->bits.gc == GC_CLEAN); // gc is disabled
}
else {
size_t extra = jl_genericmemory_isbitsunion(m) ? m->length : 0;
size_t tot = m->length * layout->size + extra;
ios_readall(s->s, (char*)m->ptr, tot);
}
return (jl_value_t*)m;
}
JL_DLLEXPORT jl_array_t *jl_alloc_array_nd(jl_value_t *atype, size_t *dims, size_t ndims);
static jl_value_t *jl_decode_value_array(jl_ircode_state *s, uint8_t tag) JL_GC_DISABLED
{
int16_t i, ndims;
if (tag == TAG_ARRAY1D)
ndims = 1;
else
ndims = read_uint16(s->s);
size_t *dims = (size_t*)alloca(ndims * sizeof(size_t));
size_t len = 1;
for (i = 0; i < ndims; i++) {
dims[i] = jl_unbox_long(jl_decode_value(s));
len *= dims[i];
}
jl_value_t *aty = jl_decode_value(s);
jl_array_t *a = jl_alloc_array_nd(aty, dims, ndims);
a->ref.mem = (jl_genericmemory_t*)jl_decode_value_memory(s, jl_field_type_concrete((jl_datatype_t*)jl_field_type_concrete((jl_datatype_t*)aty, 0), 1), len);
const jl_datatype_layout_t *layout = ((jl_datatype_t*)jl_typetagof(a->ref.mem))->layout;
if (layout->flags.arrayelem_isunion || layout->size == 0)
a->ref.ptr_or_offset = (void*)0;
else
a->ref.ptr_or_offset = a->ref.mem->ptr;
return (jl_value_t*)a;
}
static jl_value_t *jl_decode_value_expr(jl_ircode_state *s, uint8_t tag) JL_GC_DISABLED
{
size_t i, len;
jl_sym_t *head = NULL;
if (tag == TAG_EXPR) {
len = read_uint8(s->s);
}
else if (tag == TAG_CALL1) {
len = 2;
head = jl_call_sym;
}
else if (tag == TAG_CALL2) {
len = 3;
head = jl_call_sym;
}
else {
len = read_int32(s->s);
}
if (head == NULL)
head = (jl_sym_t*)jl_decode_value(s);
jl_expr_t *e = jl_exprn(head, len);
jl_value_t **data = jl_array_ptr_data(e->args);
for (i = 0; i < len; i++) {
data[i] = jl_decode_value(s);
}
return (jl_value_t*)e;
}
static jl_value_t *jl_decode_value_phi(jl_ircode_state *s, uint8_t tag) JL_GC_DISABLED
{
size_t i, len_e, len_v;
if (tag == TAG_PHINODE) {
len_e = len_v = read_uint8(s->s);
}
else {
len_e = read_int32(s->s);
len_v = read_int32(s->s);
}
jl_array_t *e = jl_alloc_array_1d(jl_array_int32_type, len_e);
jl_array_t *v = jl_alloc_vec_any(len_v);
jl_value_t *phi = jl_new_struct(jl_phinode_type, e, v);
int32_t *data_e = jl_array_data(e, int32_t);
for (i = 0; i < len_e; i++) {
data_e[i] = jl_unbox_int32(jl_decode_value(s));
}
jl_value_t **data_v = jl_array_ptr_data(v);
for (i = 0; i < len_v; i++) {
data_v[i] = jl_decode_value(s);
}
return phi;
}
static jl_value_t *jl_decode_value_phic(jl_ircode_state *s, uint8_t tag) JL_GC_DISABLED
{
size_t i, len;
if (tag == TAG_PHICNODE)
len = read_uint8(s->s);
else
len = read_int32(s->s);
jl_array_t *v = jl_alloc_vec_any(len);
jl_value_t *phic = jl_new_struct(jl_phicnode_type, v);
jl_value_t **data = jl_array_ptr_data(v);
for (i = 0; i < len; i++) {
data[i] = jl_decode_value(s);
}
return phic;
}
static jl_value_t *jl_decode_value_globalref(jl_ircode_state *s) JL_GC_DISABLED
{
jl_value_t *mod = jl_decode_value(s);
jl_value_t *var = jl_decode_value(s);
return jl_module_globalref((jl_module_t*)mod, (jl_sym_t*)var);
}
static jl_value_t *jl_decode_value_any(jl_ircode_state *s, uint8_t tag) JL_GC_DISABLED
{
int32_t sz = (tag == TAG_SHORT_GENERAL ? read_uint8(s->s) : read_int32(s->s));
jl_value_t *v = jl_gc_alloc(s->ptls, sz, NULL);
jl_set_typeof(v, (void*)(intptr_t)0xf50);
jl_datatype_t *dt = (jl_datatype_t*)jl_decode_value(s);
if (dt->smalltag)
jl_set_typetagof(v, dt->smalltag, 0);
else
jl_set_typeof(v, dt);
char *data = (char*)jl_data_ptr(v);
size_t i, np = dt->layout->npointers;
char *start = data;
for (i = 0; i < np; i++) {
uint32_t ptr = jl_ptr_offset(dt, i);
jl_value_t **fld = &((jl_value_t**)data)[ptr];
if ((char*)fld != start)
ios_readall(s->s, start, (const char*)fld - start);
*fld = jl_decode_value(s);
start = (char*)&fld[1];
}
data += jl_datatype_size(dt);
if (data != start)
ios_readall(s->s, start, data - start);
return v;
}
static jl_value_t *jl_decode_value(jl_ircode_state *s) JL_GC_DISABLED
{
assert(!ios_eof(s->s));
jl_value_t *v;
size_t i, n;
uint64_t key;
uint8_t tag = read_uint8(s->s);
if (tag > LAST_TAG)
return jl_deser_tag(tag);
switch (tag) {
case TAG_NULL: return NULL;
case 0:
tag = read_uint8(s->s);
return jl_deser_tag(tag);
case TAG_RELOC_METHODROOT:
key = read_uint64(s->s);
tag = read_uint8(s->s);
assert(tag == TAG_METHODROOT || tag == TAG_LONG_METHODROOT);
int index = -1;
if (tag == TAG_METHODROOT)
index = read_uint8(s->s);
else if (tag == TAG_LONG_METHODROOT)
index = read_uint32(s->s);
assert(index >= 0);
return lookup_root(s->method, key, index);
case TAG_METHODROOT:
return lookup_root(s->method, 0, read_uint8(s->s));
case TAG_LONG_METHODROOT:
return lookup_root(s->method, 0, read_uint32(s->s));
case TAG_SVEC: JL_FALLTHROUGH; case TAG_LONG_SVEC:
return jl_decode_value_svec(s, tag);
case TAG_COMMONSYM:
return jl_deser_symbol(read_uint8(s->s));
case TAG_SSAVALUE:
v = jl_box_ssavalue(read_uint8(s->s));
return v;
case TAG_LONG_SSAVALUE:
v = jl_box_ssavalue(read_uint16(s->s));
return v;
case TAG_SLOTNUMBER:
v = jl_box_slotnumber(read_uint16(s->s));
return v;
case TAG_ARRAY: JL_FALLTHROUGH; case TAG_ARRAY1D:
return jl_decode_value_array(s, tag);
case TAG_MEMORYT:
return jl_decode_value_memory(s, jl_decode_value(s), jl_unbox_long(jl_decode_value(s)));
case TAG_EXPR: JL_FALLTHROUGH;
case TAG_LONG_EXPR: JL_FALLTHROUGH;
case TAG_CALL1: JL_FALLTHROUGH;
case TAG_CALL2:
return jl_decode_value_expr(s, tag);
case TAG_PHINODE: JL_FALLTHROUGH; case TAG_LONG_PHINODE:
return jl_decode_value_phi(s, tag);
case TAG_PHICNODE: JL_FALLTHROUGH; case TAG_LONG_PHICNODE:
return jl_decode_value_phic(s, tag);
case TAG_GOTONODE: JL_FALLTHROUGH; case TAG_QUOTENODE:
v = jl_new_struct_uninit(tag == TAG_GOTONODE ? jl_gotonode_type : jl_quotenode_type);
set_nth_field(tag == TAG_GOTONODE ? jl_gotonode_type : jl_quotenode_type, v, 0, jl_decode_value(s), 0);
return v;
case TAG_GOTOIFNOT:
v = jl_new_struct_uninit(jl_gotoifnot_type);
set_nth_field(jl_gotoifnot_type, v, 0, jl_decode_value(s), 0);
set_nth_field(jl_gotoifnot_type, v, 1, jl_decode_value(s), 0);
return v;
case TAG_ARGUMENT:
v = jl_new_struct_uninit(jl_argument_type);
set_nth_field(jl_argument_type, v, 0, jl_decode_value(s), 0);
return v;
case TAG_RETURNNODE:
v = jl_new_struct_uninit(jl_returnnode_type);
set_nth_field(jl_returnnode_type, v, 0, jl_decode_value(s), 0);
return v;
case TAG_SHORTER_INT64:
v = jl_box_int64((int16_t)read_uint16(s->s));
return v;
case TAG_SHORT_INT64:
v = jl_box_int64(read_int32(s->s));
return v;
case TAG_INT64:
v = jl_box_int64((int64_t)read_uint64(s->s));
return v;
case TAG_SHORT_INT32:
v = jl_box_int32((int16_t)read_uint16(s->s));
return v;
case TAG_INT32:
v = jl_box_int32(read_int32(s->s));
return v;
case TAG_UINT8:
return jl_box_uint8(read_uint8(s->s));
case TAG_NEARBYGLOBAL:
assert(s->method != NULL);
v = jl_decode_value(s);
return jl_module_globalref(s->method->module, (jl_sym_t*)v);
case TAG_NEARBYMODULE:
assert(s->method != NULL);
return (jl_value_t*)s->method->module;
case TAG_GLOBALREF:
return jl_decode_value_globalref(s);
case TAG_SINGLETON:
return ((jl_datatype_t*)jl_decode_value(s))->instance;
case TAG_CORE:
return (jl_value_t*)jl_core_module;
case TAG_BASE:
return (jl_value_t*)jl_base_module;
case TAG_VECTORTY:
v = jl_decode_value(s);
return jl_apply_type2((jl_value_t*)jl_array_type, v, jl_box_long(1));
case TAG_PTRTY:
v = jl_decode_value(s);
return jl_apply_type1((jl_value_t*)jl_pointer_type, v);
case TAG_STRING:
n = read_int32(s->s);
v = jl_alloc_string(n);
ios_readall(s->s, jl_string_data(v), n);
return v;
case TAG_LINEINFO:
v = jl_new_struct_uninit(jl_lineinfonode_type);
for (i = 0; i < jl_datatype_nfields(jl_lineinfonode_type); i++) {
//size_t offs = jl_field_offset(jl_lineinfonode_type, i);
set_nth_field(jl_lineinfonode_type, v, i, jl_decode_value(s), 0);
}
return v;
default:
assert(tag == TAG_GENERAL || tag == TAG_SHORT_GENERAL);
return jl_decode_value_any(s, tag);
}
}
// --- entry points ---
typedef jl_value_t jl_string_t; // for local expressibility
#define IR_DATASIZE_FLAGS sizeof(uint8_t)
#define IR_DATASIZE_PURITY sizeof(uint16_t)
#define IR_DATASIZE_INLINING_COST sizeof(uint16_t)
#define IR_DATASIZE_NSLOTS sizeof(int32_t)
typedef enum {
ir_offset_flags = 0,
ir_offset_purity = 0 + IR_DATASIZE_FLAGS,
ir_offset_inlining_cost = 0 + IR_DATASIZE_FLAGS + IR_DATASIZE_PURITY,
ir_offset_nslots = 0 + IR_DATASIZE_FLAGS + IR_DATASIZE_PURITY + IR_DATASIZE_INLINING_COST,
ir_offset_slotflags = 0 + IR_DATASIZE_FLAGS + IR_DATASIZE_PURITY + IR_DATASIZE_INLINING_COST + IR_DATASIZE_NSLOTS
} ir_offset;
JL_DLLEXPORT jl_string_t *jl_compress_ir(jl_method_t *m, jl_code_info_t *code)
{
JL_TIMING(AST_COMPRESS, AST_COMPRESS);
JL_LOCK(&m->writelock); // protect the roots array (Might GC)
assert(jl_is_method(m));
assert(jl_is_code_info(code));
ios_t dest;
ios_mem(&dest, 0);
int en = jl_gc_enable(0); // Might GC
size_t i;
if (m->roots == NULL) {
m->roots = jl_alloc_vec_any(0);
jl_gc_wb(m, m->roots);
}
jl_ircode_state s = {
&dest,
m,
jl_current_task->ptls,
1
};
jl_code_info_flags_t flags = code_info_flags(code->inferred, code->propagate_inbounds, code->has_fcall,
code->nospecializeinfer, code->inlining, code->constprop);
write_uint8(s.s, flags.packed);
static_assert(sizeof(flags.packed) == IR_DATASIZE_FLAGS, "ir_datasize_flags is mismatched with the actual size");
write_uint16(s.s, code->purity.bits);
static_assert(sizeof(code->purity.bits) == IR_DATASIZE_PURITY, "ir_datasize_purity is mismatched with the actual size");
write_uint16(s.s, code->inlining_cost);
static_assert(sizeof(code->inlining_cost) == IR_DATASIZE_INLINING_COST, "ir_datasize_inlining_cost is mismatched with the actual size");
int32_t nslots = jl_array_nrows(code->slotflags);
assert(nslots >= m->nargs && nslots < INT32_MAX); // required by generated functions
write_int32(s.s, nslots);
static_assert(sizeof(nslots) == IR_DATASIZE_NSLOTS, "ir_datasize_nslots is mismatched with the actual size");
ios_write(s.s, jl_array_data(code->slotflags, const char), nslots);
// N.B.: The layout of everything before this point is explicitly referenced
// by the various jl_ir_ accessors. Make sure to adjust those if you change
// the data layout.
for (i = 0; i < 6; i++) {
int copy = 1;
if (i == 1) { // skip codelocs
assert(jl_field_offset(jl_code_info_type, i) == offsetof(jl_code_info_t, codelocs));
continue;
}
if (i == 4) { // don't copy contents of method_for_inference_limit_heuristics field
assert(jl_field_offset(jl_code_info_type, i) == offsetof(jl_code_info_t, method_for_inference_limit_heuristics));
copy = 0;
}
jl_encode_value_(&s, jl_get_nth_field((jl_value_t*)code, i), copy);
}
// For opaque closure, also save the slottypes. We technically only need the first slot type,
// but this is simpler for now. We may want to refactor where this gets stored in the future.
if (m->is_for_opaque_closure)
jl_encode_value_(&s, code->slottypes, 1);
if (m->generator)
// can't optimize generated functions
jl_encode_value_(&s, (jl_value_t*)jl_compress_argnames(code->slotnames), 1);
else
jl_encode_value(&s, jl_nothing);
size_t nstmt = jl_array_nrows(code->code);
assert(nstmt == jl_array_nrows(code->codelocs));
if (jl_array_nrows(code->linetable) < 256) {
for (i = 0; i < nstmt; i++) {
write_uint8(s.s, jl_array_data(code->codelocs, int32_t)[i]);
}
}
else if (jl_array_nrows(code->linetable) < 65536) {
for (i = 0; i < nstmt; i++) {
write_uint16(s.s, jl_array_data(code->codelocs, int32_t)[i]);
}
}
else {
ios_write(s.s, (char*)jl_array_data(code->codelocs, int32_t), nstmt * sizeof(int32_t));
}
write_uint8(s.s, s.relocatability);
ios_flush(s.s);
jl_string_t *v = jl_pchar_to_string(s.s->buf, s.s->size);
ios_close(s.s);
if (jl_array_nrows(m->roots) == 0) {
m->roots = NULL;
}
JL_GC_PUSH1(&v);
jl_gc_enable(en);
JL_UNLOCK(&m->writelock); // Might GC
JL_GC_POP();
return v;
}
JL_DLLEXPORT jl_code_info_t *jl_uncompress_ir(jl_method_t *m, jl_code_instance_t *metadata, jl_string_t *data)
{
if (jl_is_code_info(data))
return (jl_code_info_t*)data;
JL_TIMING(AST_UNCOMPRESS, AST_UNCOMPRESS);
JL_LOCK(&m->writelock); // protect the roots array (Might GC)
assert(jl_is_method(m));
assert(jl_is_string(data));
size_t i;
ios_t src;
ios_mem(&src, 0);
ios_setbuf(&src, (char*)jl_string_data(data), jl_string_len(data), 0);
src.size = jl_string_len(data);
int en = jl_gc_enable(0); // Might GC
jl_ircode_state s = {
&src,
m,
jl_current_task->ptls,
1
};
jl_code_info_t *code = jl_new_code_info_uninit();
jl_code_info_flags_t flags;
flags.packed = read_uint8(s.s);
code->inlining = flags.bits.inlining;
code->constprop = flags.bits.constprop;
code->inferred = flags.bits.inferred;
code->propagate_inbounds = flags.bits.propagate_inbounds;
code->has_fcall = flags.bits.has_fcall;
code->nospecializeinfer = flags.bits.nospecializeinfer;
code->purity.bits = read_uint16(s.s);
code->inlining_cost = read_uint16(s.s);
size_t nslots = read_int32(&src);
code->slotflags = jl_alloc_array_1d(jl_array_uint8_type, nslots);
ios_readall(s.s, jl_array_data(code->slotflags, char), nslots);
for (i = 0; i < 6; i++) {
if (i == 1) // skip codelocs
continue;
assert(jl_field_isptr(jl_code_info_type, i));
jl_value_t **fld = (jl_value_t**)((char*)jl_data_ptr(code) + jl_field_offset(jl_code_info_type, i));
*fld = jl_decode_value(&s);
}
if (m->is_for_opaque_closure)
code->slottypes = jl_decode_value(&s);
jl_value_t *slotnames = jl_decode_value(&s);
if (!jl_is_string(slotnames))
slotnames = m->slot_syms;
code->slotnames = jl_uncompress_argnames(slotnames);
size_t nstmt = jl_array_nrows(code->code);
code->codelocs = (jl_value_t*)jl_alloc_array_1d(jl_array_int32_type, nstmt);
if (jl_array_nrows(code->linetable) < 256) {
for (i = 0; i < nstmt; i++) {
jl_array_data(code->codelocs, int32_t)[i] = read_uint8(s.s);
}
}
else if (jl_array_nrows(code->linetable) < 65536) {
for (i = 0; i < nstmt; i++) {
jl_array_data(code->codelocs, int32_t)[i] = read_uint16(s.s);
}
}
else {
ios_readall(s.s, (char*)jl_array_data(code->codelocs, int32_t), nstmt * sizeof(int32_t));
}
(void) read_uint8(s.s); // relocatability
assert(ios_getc(s.s) == -1);
ios_close(s.s);
JL_GC_PUSH1(&code);
jl_gc_enable(en);
JL_UNLOCK(&m->writelock); // Might GC
JL_GC_POP();
if (metadata) {
code->min_world = jl_atomic_load_relaxed(&metadata->min_world);
// n.b. this should perhaps be capped to jl_world_counter max here, since we don't have backedges on it after return
code->max_world = jl_atomic_load_relaxed(&metadata->max_world);
code->rettype = metadata->rettype;
code->parent = metadata->def;
}
return code;
}
JL_DLLEXPORT uint8_t jl_ir_flag_inferred(jl_string_t *data)
{
if (jl_is_code_info(data))
return ((jl_code_info_t*)data)->inferred;
assert(jl_is_string(data));
jl_code_info_flags_t flags;
flags.packed = jl_string_data(data)[ir_offset_flags];
return flags.bits.inferred;
}
JL_DLLEXPORT uint8_t jl_ir_flag_inlining(jl_string_t *data)
{