https://git.ruby-lang.org/ruby.git/commit/?id=d30d404bc4

From d30d404bc4b848f84959799b543de4bdbd8eef2b Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@g...>
Date: Sun, 14 Jul 2019 18:04:14 +0900
Subject: MJIT Support for getblockparamproxy


diff --git a/test/ruby/test_jit.rb b/test/ruby/test_jit.rb
index 0cfc980..727043f 100644
--- a/test/ruby/test_jit.rb
+++ b/test/ruby/test_jit.rb
@@ -18,7 +18,6 @@ class TestJIT < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_jit.rb#L18
   # trace_* insns are not compiled for now...
   TEST_PENDING_INSNS = RubyVM::INSTRUCTION_NAMES.select { |n| n.start_with?('trace_') }.map(&:to_sym) + [
     # not supported yet
-    :getblockparamproxy,
     :defineclass,
     :opt_call_c_function,
 
@@ -94,7 +93,18 @@ class TestJIT < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_jit.rb#L93
   end
 
   def test_compile_insn_getblockparamproxy
-    skip "support this in mjit_compile"
+    assert_eval_with_jit("#{<<~"begin;"}\n#{<<~"end;"}", stdout: '4', success_count: 3, insns: %i[getblockparamproxy])
+    begin;
+      def bar(&b)
+        b.call
+      end
+
+      def foo(&b)
+        bar(&b) * bar(&b)
+      end
+
+      print foo { 2 }
+    end;
   end
 
   def test_compile_insn_getspecial
diff --git a/tool/ruby_vm/views/_mjit_compile_insn_body.erb b/tool/ruby_vm/views/_mjit_compile_insn_body.erb
index 7035779..a2a750f 100644
--- a/tool/ruby_vm/views/_mjit_compile_insn_body.erb
+++ b/tool/ruby_vm/views/_mjit_compile_insn_body.erb
@@ -81,6 +81,9 @@ https://github.com/ruby/ruby/blob/trunk/tool/ruby_vm/views/_mjit_compile_insn_body.erb#L81
         fprintf(f, "            reg_cfp->pc = original_body_iseq + %d;\n", pos);
         fprintf(f, "            RB_DEBUG_COUNTER_INC(mjit_cancel_opt_insn);\n");
         fprintf(f, "            goto cancel;\n");
+%   when /\A(?<prefix>.+\b)INSN_LABEL\((?<name>[^)]+)\)(?<suffix>.+)\z/m
+%     prefix, name, suffix = Regexp.last_match[:prefix], Regexp.last_match[:name], Regexp.last_match[:suffix]
+        fprintf(f, "    <%= prefix.gsub(/\t/, ' ' * 8) %>INSN_LABEL(<%= name %>_%d)<%= suffix.sub(/\n/, '\n') %>", pos);
 %   else
 %     if insn.handles_sp?
 %       # If insn.handles_sp? is true, cfp->sp might be changed inside insns (like vm_caller_setup_arg_block)
diff --git a/tool/ruby_vm/views/mjit_compile.inc.erb b/tool/ruby_vm/views/mjit_compile.inc.erb
index 1812dab..d9092a7 100644
--- a/tool/ruby_vm/views/mjit_compile.inc.erb
+++ b/tool/ruby_vm/views/mjit_compile.inc.erb
@@ -16,7 +16,6 @@ https://github.com/ruby/ruby/blob/trunk/tool/ruby_vm/views/mjit_compile.inc.erb#L16
 } -%>
 %
 % unsupported_insns = [
-%   'getblockparamproxy',  # TODO: support this
 %   'defineclass',         # low priority
 %   'opt_call_c_function', # low priority
 % ]
diff --git a/vm.c b/vm.c
index b5412d1..939c0fc 100644
--- a/vm.c
+++ b/vm.c
@@ -323,8 +323,6 @@ extern VALUE rb_vm_invoke_bmethod(rb_execution_context_t *ec, rb_proc_t *proc, V https://github.com/ruby/ruby/blob/trunk/vm.c#L323
                                   const rb_callable_method_entry_t *me);
 static VALUE vm_invoke_proc(rb_execution_context_t *ec, rb_proc_t *proc, VALUE self, int argc, const VALUE *argv, VALUE block_handler);
 
-static VALUE rb_block_param_proxy;
-
 #include "mjit.h"
 #include "vm_insnhelper.h"
 #include "vm_exec.h"
@@ -352,6 +350,7 @@ rb_next_class_serial(void) https://github.com/ruby/ruby/blob/trunk/vm.c#L350
 VALUE rb_cRubyVM;
 VALUE rb_cThread;
 VALUE rb_mRubyVMFrozenCore;
+VALUE rb_block_param_proxy;
 
 #define ruby_vm_redefined_flag GET_VM()->redefined_flag
 VALUE ruby_vm_const_missing_count = 0;
diff --git a/vm_insnhelper.h b/vm_insnhelper.h
index 98aee9d..59c82e5 100644
--- a/vm_insnhelper.h
+++ b/vm_insnhelper.h
@@ -14,6 +14,8 @@ https://github.com/ruby/ruby/blob/trunk/vm_insnhelper.h#L14
 
 RUBY_SYMBOL_EXPORT_BEGIN
 
+RUBY_EXTERN VALUE rb_block_param_proxy;
+
 RUBY_EXTERN VALUE ruby_vm_const_missing_count;
 RUBY_EXTERN rb_serial_t ruby_vm_global_method_state;
 RUBY_EXTERN rb_serial_t ruby_vm_global_constant_state;
-- 
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