Preliminary support for block contexts in hydrogen.

src/x64/lithium-codegen-x64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/x64/lithium-codegen-x64.h"
 #include "src/code-stubs.h"
@@ skipping 5667 matching lines @@
   // Index is now equal to out of object property index plus 1.
   __ movp(object, FieldOperand(object,
                                index,
                                times_pointer_size,
                                FixedArray::kHeaderSize - kPointerSize));
   __ bind(deferred->exit());
   __ bind(&done);
 }
 
 
+void LCodeGen::DoStoreFrameContext(LStoreFrameContext* instr) {
+  Register context = ToRegister(instr->context());
+  __ movp(Operand(rbp, StandardFrameConstants::kContextOffset), context);
+}
+
+
+void LCodeGen::DoAllocateBlockContext(LAllocateBlockContext* instr) {
+  Handle<ScopeInfo> scope_info = instr->scope_info();
+  __ Push(scope_info);
+  __ Push(ToRegister(instr->function()));
+  CallRuntime(Runtime::kHiddenPushBlockContext, 2, instr);
+  RecordSafepoint(Safepoint::kNoLazyDeopt);
+}
+
+
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64