VM: New calling convention for generated code.

runtime/vm/intermediate_language.cc

 // Copyright (c) 2013, 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 "vm/intermediate_language.h"
 
 #include "vm/bit_vector.h"
 #include "vm/constant_propagator.h"
 #include "vm/cpu.h"
 #include "vm/dart_entry.h"
@@ skipping 2915 matching lines @@
   ASSERT((kind == Token::kEQ_STRICT) || (kind == Token::kNE_STRICT));
 }
 
 
 LocationSummary* InstanceCallInstr::MakeLocationSummary(Zone* zone,
                                                         bool optimizing) const {
   return MakeCallSummary(zone);
 }
 
 
-static uword TwoArgsSmiOpInlineCacheEntry(Token::Kind kind) {
+static RawCode* TwoArgsSmiOpInlineCacheCode(Token::Kind kind) {
   if (!FLAG_two_args_smi_icd) {
     return 0;
   }
   StubCode* stub_code = Isolate::Current()->stub_code();
   switch (kind) {
-    case Token::kADD: return stub_code->SmiAddInlineCacheEntryPoint();
-    case Token::kSUB: return stub_code->SmiSubInlineCacheEntryPoint();
-    case Token::kEQ:  return stub_code->SmiEqualInlineCacheEntryPoint();
-    default:          return 0;
+    case Token::kADD: return stub_code->SmiAddInlineCacheCode();
+    case Token::kSUB: return stub_code->SmiSubInlineCacheCode();
+    case Token::kEQ:  return stub_code->SmiEqualInlineCacheCode();
+    default:          return Code::null();
   }
 }
 
 
 void InstanceCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Zone* zone = compiler->zone();
   const ICData* call_ic_data = NULL;
   if (!FLAG_propagate_ic_data || !compiler->is_optimizing() ||
       (ic_data() == NULL)) {
     const Array& arguments_descriptor =
@@ skipping 20 matching lines @@
       compiler->GenerateInstanceCall(deopt_id(),
                                      token_pos(),
                                      ArgumentCount(),
                                      locs(),
                                      *call_ic_data);
     }
   } else {
     // Unoptimized code.
     ASSERT(!HasICData());
     bool is_smi_two_args_op = false;
-    const uword label_address = TwoArgsSmiOpInlineCacheEntry(token_kind());
-    if (label_address != 0) {
+    Code& stub = Code::Handle(TwoArgsSmiOpInlineCacheCode(token_kind()));
+    if (stub.raw() != Code::null()) {
       // We have a dedicated inline cache stub for this operation, add an
       // an initial Smi/Smi check with count 0.
       ASSERT(call_ic_data->NumArgsTested() == 2);
       const String& name = String::Handle(zone, call_ic_data->target_name());
       const Class& smi_class = Class::Handle(zone, Smi::Class());
       const Function& smi_op_target =
           Function::Handle(Resolver::ResolveDynamicAnyArgs(smi_class, name));
       if (call_ic_data->NumberOfChecks() == 0) {
         GrowableArray<intptr_t> class_ids(2);
         class_ids.Add(kSmiCid);
         class_ids.Add(kSmiCid);
         call_ic_data->AddCheck(class_ids, smi_op_target);
         // 'AddCheck' sets the initial count to 1.
         call_ic_data->SetCountAt(0, 0);
         is_smi_two_args_op = true;
       } else if (call_ic_data->NumberOfChecks() == 1) {
         GrowableArray<intptr_t> class_ids(2);
         Function& target = Function::Handle(zone);
         call_ic_data->GetCheckAt(0, &class_ids, &target);
         if ((target.raw() == smi_op_target.raw()) &&
             (class_ids[0] == kSmiCid) && (class_ids[1] == kSmiCid)) {
           is_smi_two_args_op = true;
         }
       }
     }
     if (is_smi_two_args_op) {
       ASSERT(ArgumentCount() == 2);
-      ExternalLabel target_label(label_address);
-      compiler->EmitInstanceCall(&target_label, *call_ic_data, ArgumentCount(),
+      compiler->EmitInstanceCall(stub, *call_ic_data, ArgumentCount(),
                                  deopt_id(), token_pos(), locs());
     } else if (FLAG_ic_range_profiling &&
                (Token::IsBinaryArithmeticOperator(token_kind()) ||
                 Token::IsUnaryArithmeticOperator(token_kind()))) {
       ASSERT(Token::IsUnaryArithmeticOperator(token_kind()) ==
                  (ArgumentCount() == 1));
       ASSERT(Token::IsBinaryArithmeticOperator(token_kind()) ==
                  (ArgumentCount() == 2));
       StubCode* stub_code = compiler->isolate()->stub_code();
-      ExternalLabel target_label((ArgumentCount() == 1) ?
-          stub_code->UnaryRangeCollectingInlineCacheEntryPoint() :
-          stub_code->BinaryRangeCollectingInlineCacheEntryPoint());
-      compiler->EmitInstanceCall(&target_label, *call_ic_data, ArgumentCount(),
+      stub = ((ArgumentCount() == 1) ?
+          stub_code->UnaryRangeCollectingInlineCacheCode() :
+          stub_code->BinaryRangeCollectingInlineCacheCode());
+      compiler->EmitInstanceCall(stub, *call_ic_data, ArgumentCount(),
                                  deopt_id(), token_pos(), locs());
     } else {
       compiler->GenerateInstanceCall(deopt_id(),
                                      token_pos(),
                                      ArgumentCount(),
                                      locs(),
                                      *call_ic_data);
     }
   }
 }
@@ skipping 596 matching lines @@
     case Token::kTRUNCDIV: return 0;
     case Token::kMOD: return 1;
     default: UNIMPLEMENTED(); return -1;
   }
 }
 
 
 #undef __
 
 }  // namespace dart