Use big-boy Types to annotate interface descriptor parameters

src/compiler.h

Index: src/compiler.h
diff --git a/src/compiler.h b/src/compiler.h
index c90bf91e596c8376062f6c770e03e4273752a47e..6a3c5b2b08a65ea23afce0d7ea0ccffa68fec192 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -9,6 +9,7 @@
 #include "src/ast.h"
 #include "src/bailout-reason.h"
 #include "src/compilation-dependencies.h"
+#include "src/signature.h"
 #include "src/zone.h"
 
 namespace v8 {
@@ -288,6 +289,11 @@ class CompilationInfo {
     optimization_id_ = isolate()->NextOptimizationId();
   }
 
+  void SetFunctionType(Type::FunctionType* function_type) {

[Benedikt Meurer, 2015/06/22 05:27:28]

Nit: I think Type::FunctionType is an implementation detail of the type system
and should not be exposed? Use Type* instead.

[danno, 2015/06/23 14:39:44]

As discussed over chat with you and Jaro, I'm going to leave this as-is for now.

[rossberg, 2015/06/29 12:29:34]

FunctionType is not an implementation detail -- it is the public interface class
to get to a function type's attributes. Similarly for the other structural
types. The only internal classes are BitsetType, StructuralType, and UnionType
(see the respective comments at the beginning of TypeImpl).

+    function_type_ = function_type;
+  }
+  Type::FunctionType* function_type() const { return function_type_; }
+
   void SetStub(CodeStub* code_stub) {
     SetMode(STUB);
     code_stub_ = code_stub;
@@ -479,6 +485,8 @@ class CompilationInfo {
 
   int osr_expr_stack_height_;
 
+  Type::FunctionType* function_type_;

[Benedikt Meurer, 2015/06/22 05:27:28]

See above.

+
   DISALLOW_COPY_AND_ASSIGN(CompilationInfo);
 };