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Revert "Revert "This commit implements the Object Shapes technique in CRuby.""

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This reverts commit 9a6803c90b.
This commit is contained in:
Jemma Issroff 2022-10-03 11:14:32 -04:00 • committed by Aaron Patterson
parent 5ffbb2be18
commit ad63b668e2
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GPG key ID: 953170BCB4FFAFC6
41 changed files with 2311 additions and 893 deletions
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108
vm_callinfo.h
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@ -10,6 +10,7 @@
#include "debug_counter.h"
#include "internal/class.h"
#include "shape.h"
enum vm_call_flag_bits {
VM_CALL_ARGS_SPLAT_bit, /* m(*args) */
@ -284,14 +285,32 @@ struct rb_callcache {
const vm_call_handler call_;
union {
const unsigned int attr_index;
struct {
const attr_index_t index;
shape_id_t dest_shape_id;
} attr;
const enum method_missing_reason method_missing_reason; /* used by method_missing */
VALUE v;
} aux_;
};
#define VM_CALLCACHE_UNMARKABLE IMEMO_FL_USER0
#define VM_CALLCACHE_ON_STACK IMEMO_FL_USER1
#define VM_CALLCACHE_UNMARKABLE FL_FREEZE
#define VM_CALLCACHE_ON_STACK FL_EXIVAR
extern const struct rb_callcache *rb_vm_empty_cc(void);
extern const struct rb_callcache *rb_vm_empty_cc_for_super(void);
#define vm_cc_empty() rb_vm_empty_cc()
static inline void
vm_cc_attr_index_initialize(const struct rb_callcache *cc, shape_id_t shape_id)
{
VM_ASSERT(IMEMO_TYPE_P(cc, imemo_callcache));
VM_ASSERT(cc != vm_cc_empty());
IMEMO_SET_CACHED_SHAPE_ID((VALUE)cc, shape_id);
*(attr_index_t *)&cc->aux_.attr.index = 0;
*(shape_id_t *)&cc->aux_.attr.dest_shape_id = shape_id;
}
static inline const struct rb_callcache *
vm_cc_new(VALUE klass,
@ -299,6 +318,7 @@ vm_cc_new(VALUE klass,
vm_call_handler call)
{
const struct rb_callcache *cc = (const struct rb_callcache *)rb_imemo_new(imemo_callcache, (VALUE)cme, (VALUE)call, 0, klass);
vm_cc_attr_index_initialize(cc, INVALID_SHAPE_ID);
RB_DEBUG_COUNTER_INC(cc_new);
return cc;
}
@ -350,30 +370,71 @@ vm_cc_call(const struct rb_callcache *cc)
return cc->call_;
}
static inline unsigned int
static inline attr_index_t
vm_cc_attr_index(const struct rb_callcache *cc)
{
VM_ASSERT(IMEMO_TYPE_P(cc, imemo_callcache));
return cc->aux_.attr_index - 1;
return cc->aux_.attr.index - 1;
}
static inline bool
vm_cc_attr_index_p(const struct rb_callcache *cc)
{
VM_ASSERT(IMEMO_TYPE_P(cc, imemo_callcache));
return cc->aux_.attr_index > 0;
return cc->aux_.attr.index != 0;
}
static inline uint32_t
vm_ic_entry_index(const struct iseq_inline_iv_cache_entry *ic)
static inline shape_id_t
vm_cc_attr_index_source_shape_id(const struct rb_callcache *cc)
{
return ic->entry->index;
VM_ASSERT(IMEMO_TYPE_P(cc, imemo_callcache));
return IMEMO_CACHED_SHAPE_ID((VALUE)cc);
}
static inline shape_id_t
vm_cc_attr_shape_id(const struct rb_callcache *cc)
{
VM_ASSERT(IMEMO_TYPE_P(cc, imemo_callcache));
return vm_cc_attr_index_source_shape_id(cc);
}
static inline shape_id_t
vm_cc_attr_index_dest_shape_id(const struct rb_callcache *cc)
{
VM_ASSERT(IMEMO_TYPE_P(cc, imemo_callcache));
return cc->aux_.attr.dest_shape_id;
}
static inline attr_index_t
vm_ic_attr_index(const struct iseq_inline_iv_cache_entry *ic)
{
return ic->attr_index - 1;
}
static inline bool
vm_ic_entry_p(const struct iseq_inline_iv_cache_entry *ic)
vm_ic_attr_index_p(const struct iseq_inline_iv_cache_entry *ic)
{
return ic->entry;
return ic->attr_index > 0;
}
static inline shape_id_t
vm_ic_attr_shape_id(const struct iseq_inline_iv_cache_entry *ic)
{
return ic->source_shape_id;
}
static inline shape_id_t
vm_ic_attr_index_source_shape_id(const struct iseq_inline_iv_cache_entry *ic)
{
return ic->source_shape_id;
}
static inline shape_id_t
vm_ic_attr_index_dest_shape_id(const struct iseq_inline_iv_cache_entry *ic)
{
return ic->dest_shape_id;
}
static inline unsigned int
@ -407,10 +468,6 @@ vm_cc_valid_p(const struct rb_callcache *cc, const rb_callable_method_entry_t *c
}
}
extern const struct rb_callcache *rb_vm_empty_cc(void);
extern const struct rb_callcache *rb_vm_empty_cc_for_super(void);
#define vm_cc_empty() rb_vm_empty_cc()
/* callcache: mutate */
static inline void
@ -422,26 +479,29 @@ vm_cc_call_set(const struct rb_callcache *cc, vm_call_handler call)
}
static inline void
vm_cc_attr_index_set(const struct rb_callcache *cc, int index)
vm_cc_attr_index_set(const struct rb_callcache *cc, attr_index_t index, shape_id_t source_shape_id, shape_id_t dest_shape_id)
{
VM_ASSERT(IMEMO_TYPE_P(cc, imemo_callcache));
VM_ASSERT(cc != vm_cc_empty());
*(int *)&cc->aux_.attr_index = index + 1;
IMEMO_SET_CACHED_SHAPE_ID((VALUE)cc, source_shape_id);
*(attr_index_t *)&cc->aux_.attr.index = (index + 1);
*(shape_id_t *)&cc->aux_.attr.dest_shape_id = dest_shape_id;
}
static inline void
vm_ic_entry_set(struct iseq_inline_iv_cache_entry *ic, struct rb_iv_index_tbl_entry *entry, const rb_iseq_t *iseq)
vm_ic_attr_index_set(const rb_iseq_t *iseq, const struct iseq_inline_iv_cache_entry *ic, attr_index_t index, shape_id_t source_shape_id, shape_id_t dest_shape_id)
{
ic->entry = entry;
RB_OBJ_WRITTEN(iseq, Qundef, entry->class_value);
*(shape_id_t *)&ic->source_shape_id = source_shape_id;
*(shape_id_t *)&ic->dest_shape_id = dest_shape_id;
*(attr_index_t *)&ic->attr_index = index + 1;
}
static inline void
vm_cc_attr_index_initialize(const struct rb_callcache *cc)
vm_ic_attr_index_initialize(const struct iseq_inline_iv_cache_entry *ic, shape_id_t shape_id)
{
VM_ASSERT(IMEMO_TYPE_P(cc, imemo_callcache));
VM_ASSERT(cc != vm_cc_empty());
*(int *)&cc->aux_.attr_index = 0;
*(shape_id_t *)&ic->source_shape_id = shape_id;
*(shape_id_t *)&ic->dest_shape_id = shape_id;
*(attr_index_t *)&ic->attr_index = 0;
}
static inline void