kotovalexarian-likes-github/ruby--ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2022-11-09 12:17:21 -05:00
Code Releases Activity

Comment edits and moving functions around in the file

Browse source
This commit is contained in:
Alan Wu 2021-09-24 18:03:10 -04:00
parent a09adac2d7
commit 1a5109cb5f
1 changed files with 28 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

50
yjit_codegen.c
View file

@ -2954,10 +2954,32 @@ jit_protected_callee_ancestry_guard(jitstate_t *jit, codeblock_t *cb, const rb_c
}
// Return true when the codegen function generates code.
// known_recv_klass is non-NULL when the caller has used jit_guard_known_klass
// See yjit_reg_method.
// known_recv_klass is non-NULL when the caller has used jit_guard_known_klass().
// See yjit_reg_method().
typedef bool (*method_codegen_t)(jitstate_t *jit, ctx_t *ctx, const struct rb_callinfo *ci, const rb_callable_method_entry_t *cme, rb_iseq_t *block, const int32_t argc, VALUE *known_recv_klass);
// Register a specialized codegen function for a particular method. Note that
// the if the function returns true, the code it generates runs without a
// control frame and without interrupt checks. To avoid creating observable
// behavior changes, the codegen function should only target simple code paths
// that do not allocate and do not make method calls.
static void
yjit_reg_method(VALUE klass, const char *mid_str, method_codegen_t gen_fn)
{
ID mid = rb_intern(mid_str);
const rb_method_entry_t *me = rb_method_entry_at(klass, mid);
if (!me) {
rb_bug("undefined optimized method: %s", rb_id2name(mid));
}
// For now, only cfuncs are supported
RUBY_ASSERT(me && me->def);
RUBY_ASSERT(me->def->type == VM_METHOD_TYPE_CFUNC);
st_insert(yjit_method_codegen_table, (st_data_t)me->def->method_serial, (st_data_t)gen_fn);
}
// Codegen for rb_obj_not().
// Note, caller is responsible for generating all the right guards, including
// arity guards.
@ -3031,9 +3053,9 @@ jit_rb_obj_equal(jitstate_t *jit, ctx_t *ctx, const struct rb_callinfo *ci, cons
}
// Codegen for rb_str_to_s()
// When String#to_s is called on a String instance, the method returns self and most
// of the overhead comes from setting up the method call. We observed that this situation
// happens a lot in some workloads.
// When String#to_s is called on a String instance, the method returns self and
// most of the overhead comes from setting up the method call. We observed that
// this situation happens a lot in some workloads.
static bool
jit_rb_str_to_s(jitstate_t *jit, ctx_t *ctx, const struct rb_callinfo *ci, const rb_callable_method_entry_t *cme, rb_iseq_t *block, const int32_t argc, VALUE *recv_known_klass)
{
@ -4362,23 +4384,6 @@ invalidate_all_blocks_for_tracing(const rb_iseq_t *iseq)
#endif
}
static void
yjit_reg_method(VALUE klass, const char *mid_str, method_codegen_t gen_fn)
{
ID mid = rb_intern(mid_str);
const rb_method_entry_t *me = rb_method_entry_at(klass, mid);
if (!me) {
rb_bug("undefined optimized method: %s", rb_id2name(mid));
}
// For now, only cfuncs are supported
VM_ASSERT(me && me->def);
VM_ASSERT(me->def->type == VM_METHOD_TYPE_CFUNC);
st_insert(yjit_method_codegen_table, (st_data_t)me->def->method_serial, (st_data_t)gen_fn);
}
static void
yjit_reg_op(int opcode, codegen_fn gen_fn)
{
@ -4487,6 +4492,7 @@ yjit_init_codegen(void)
yjit_method_codegen_table = st_init_numtable();
// Specialization for C methods. See yjit_reg_method() for details.
yjit_reg_method(rb_cBasicObject, "!", jit_rb_obj_not);
yjit_reg_method(rb_cNilClass, "nil?", jit_rb_true);