fix YJIT calls

bootstraptest/test_yjit.rb

@@ -4766,6 +4766,22 @@ def delegator(...)
  delegator
 }
 
+assert_equal 'ok', %q{
+ def ok
+ :ok
+ end
+
+ def delegator(...)
+ ok(...)
+ end
+
+ def caller
+ send(:delegator)
+ end
+
+ caller
+}
+
 assert_equal '[:ok, :ok, :ok]', %q{
  def identity(x) = x
  def foo(x, _) = x

yjit/src/codegen.rs

@@ -6991,6 +6991,10 @@ fn gen_send_iseq(
  }
  exit_if_doing_kw_and_opts_missing(asm, doing_kw_call, opts_missing)?;
  exit_if_has_rest_and_optional_and_block(asm, iseq_has_rest, opt_num, iseq, block_arg)?;
+ if forwarding_call && flags & VM_CALL_OPT_SEND != 0 {
+ gen_counter_incr(asm, Counter::send_iseq_send_forwarding);
+ return None;
+ }
  let block_arg_type = exit_if_unsupported_block_arg_type(jit, asm, block_arg)?;
 
  // Bail if we can't drop extra arguments for a yield by just popping them
@@ -7500,33 +7504,33 @@ fn gen_send_iseq(
  }
 
  if !forwarding_call {
- // Nil-initialize missing optional parameters
- nil_fill(
- "nil-initialize missing optionals",
- {
- let begin = -argc + required_num + opts_filled;
- let end = -argc + required_num + opt_num;
-
- begin..end
- },
- asm
- );
- // Nil-initialize the block parameter. It's the last parameter local
- if iseq_has_block_param {
- let block_param = asm.ctx.sp_opnd(-argc + num_params - 1);
- asm.store(block_param, Qnil.into());
- }
- // Nil-initialize non-parameter locals
- nil_fill(
- "nil-initialize locals",
+  // Nil-initialize missing optional parameters
+  nil_fill(
+  "nil-initialize missing optionals",
+  {
+  let begin = -argc + required_num + opts_filled;
+  let end = -argc + required_num + opt_num;
+
+  begin..end
+  },
+  asm
+  );
+  // Nil-initialize the block parameter. It's the last parameter local
+  if iseq_has_block_param {
+  let block_param = asm.ctx.sp_opnd(-argc + num_params - 1);
+  asm.store(block_param, Qnil.into());
+  }
+  // Nil-initialize non-parameter locals
+  nil_fill(
+  "nil-initialize locals",
  {
  let begin = -argc + num_params;
  let end = -argc + num_locals;
 
  begin..end
  },
  asm
- );
+  );
  }
 
  if forwarding_call {

yjit/src/stats.rs

@@ -384,6 +384,7 @@ make_counters! {
  send_iseq_has_no_kw,
  send_iseq_accepts_no_kwarg,
  send_iseq_materialized_block,
+ send_iseq_send_forwarding,
  send_iseq_splat_not_array,
  send_iseq_splat_with_kw,
  send_iseq_missing_optional_kw,