Make CTX allocatable by the register allocator.

runtime/vm/code_descriptors_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/assert.h"
 #include "vm/globals.h"
 
 #include "vm/ast.h"
 #include "vm/assembler.h"
 #include "vm/code_descriptors.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
 #include "vm/native_entry.h"
 #include "vm/parser.h"
 #include "vm/symbols.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
 static const intptr_t kPos = Scanner::kNoSourcePos;
 
 
 CODEGEN_TEST_GENERATE(StackmapCodegen, test) {
-  Assembler assembler;
-  const String& function_name = String::ZoneHandle(Symbols::New("test"));
-  Class& cls = Class::ZoneHandle();
-  const Script& script = Script::Handle();
-  cls = Class::New(function_name, script, Scanner::kNoSourcePos);
-  const Function& function = Function::ZoneHandle(
-      Function::New(function_name, RawFunction::kRegularFunction,
-                    true, false, false, false, false, cls, 0));
-  function.set_result_type(Type::Handle(Type::DynamicType()));
-  const Array& functions = Array::Handle(Array::New(1));
-  functions.SetAt(0, function);
-  cls.SetFunctions(functions);
-  Library& lib = Library::Handle(Library::CoreLibrary());
-  lib.AddClass(cls);
   ParsedFunction* parsed_function =
-      new ParsedFunction(Isolate::Current(), function);
+      new ParsedFunction(Isolate::Current(), test->function());
   LiteralNode* l = new LiteralNode(kPos, Smi::ZoneHandle(Smi::New(1)));
   test->node_sequence()->Add(new ReturnNode(kPos, l));
   l = new LiteralNode(kPos, Smi::ZoneHandle(Smi::New(2)));
   test->node_sequence()->Add(new ReturnNode(kPos, l));
   l = new LiteralNode(kPos, Smi::ZoneHandle(Smi::New(3)));
   test->node_sequence()->Add(new ReturnNode(kPos, l));
   parsed_function->SetNodeSequence(test->node_sequence());
   parsed_function->set_instantiator(NULL);
   parsed_function->set_default_parameter_values(Object::null_array());
+  parsed_function->EnsureExpressionTemp();
+  test->node_sequence()->scope()->AddVariable(
+      parsed_function->expression_temp_var());
+  test->node_sequence()->scope()->AddVariable(
+      parsed_function->current_context_var());
   parsed_function->AllocateVariables();
   bool retval;
   Isolate* isolate = Isolate::Current();
   EXPECT(isolate != NULL);
   LongJumpScope jump;
   if (setjmp(*jump.Set()) == 0) {
     // Build a stackmap table and some stackmap table entries.
     const intptr_t kStackSlotCount = 11;
     StackmapTableBuilder* stackmap_table_builder = new StackmapTableBuilder();
     EXPECT(stackmap_table_builder != NULL);
@@ skipping 67 matching lines @@
           false, false, true };
     for (intptr_t i = 0; i < kStackSlotCount; ++i) {
       EXPECT_EQ(expectation3[i], stack_bitmap->Get(i));
     }
     // Add a stack map entry at pc offset 3.
     stackmap_table_builder->AddEntry(3, stack_bitmap, 0);
 
     const Error& error =
         Error::Handle(Compiler::CompileParsedFunction(parsed_function));
     EXPECT(error.IsNull());
-    const Code& code = Code::Handle(function.CurrentCode());
+    const Code& code = Code::Handle(test->function().CurrentCode());
 
     const Array& stack_maps =
         Array::Handle(stackmap_table_builder->FinalizeStackmaps(code));
     code.set_stackmaps(stack_maps);
     const Array& stack_map_list = Array::Handle(code.stackmaps());
     EXPECT(!stack_map_list.IsNull());
     Stackmap& stack_map = Stackmap::Handle();
     EXPECT_EQ(4, stack_map_list.Length());
 
     // Validate the first stack map entry.
@@ skipping 126 matching lines @@
 
   // Now invoke 'A.moo' and it will trigger a GC when the native function
   // is called, this should then cause the stack map of function 'A.foo'
   // to be traversed and the appropriate objects visited.
   const Object& result = Object::Handle(
       DartEntry::InvokeFunction(function_foo, Object::empty_array()));
   EXPECT(!result.IsError());
 }
 
 }  // namespace dart