Stack allocating block scoped variables.

src/x64/full-codegen-x64.cc

Index: src/x64/full-codegen-x64.cc
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index 963912f66a9a74dc73ad74b8af32efabf514cccb..4dd92e8cdff03dbe70c33d6e9030862f6da92dc1 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -607,6 +607,11 @@ MemOperand FullCodeGenerator::StackOperand(Variable* var) {
     offset += (info_->scope()->num_parameters() + 1) * kPointerSize;
   } else {
     offset += JavaScriptFrameConstants::kLocal0Offset;
+    // Test if the variable is from a nested block scope.
+    if (info_->scope() != var->scope()) {
+      // Skip handlers and stack locals from enclosing block scopes.
+      offset -= var->scope()->stack_slots_depth() * kPointerSize;
+    }
   }
   return Operand(rbp, offset);
 }