Better support for 'polymorphic' JS and external arrays

src/x64/ic-x64.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 692 matching lines @@
                                           &miss,  // When not a number.
                                           &miss,  // When index out of range.
                                           STRING_INDEX_IS_ARRAY_INDEX);
   char_at_generator.GenerateFast(masm);
   __ ret(0);
 
   StubRuntimeCallHelper call_helper;
   char_at_generator.GenerateSlow(masm, call_helper);
 
   __ bind(&miss);
-  GenerateMiss(masm);
+  GenerateMiss(masm, false);
 }
 
 
 void KeyedLoadIC::GenerateIndexedInterceptor(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- rax    : key
   //  -- rdx    : receiver
   //  -- rsp[0] : return address
   // -----------------------------------
   Label slow;
@@ skipping 22 matching lines @@
   __ push(rcx);  // return address
 
   // Perform tail call to the entry.
   __ TailCallExternalReference(
       ExternalReference(IC_Utility(kKeyedLoadPropertyWithInterceptor),
                         masm->isolate()),
       2,
       1);
 
   __ bind(&slow);
-  GenerateMiss(masm);
+  GenerateMiss(masm, false);
 }
 
 
 void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm,
                                    StrictModeFlag strict_mode) {
   // ----------- S t a t e -------------
   //  -- rax     : value
   //  -- rcx     : key
   //  -- rdx     : receiver
   //  -- rsp[0]  : return address
@@ skipping 518 matching lines @@
   __ push(rcx);  // name
   __ push(rbx);  // return address
 
   // Perform tail call to the entry.
   ExternalReference ref =
       ExternalReference(IC_Utility(kLoadIC_Miss), masm->isolate());
   __ TailCallExternalReference(ref, 2, 1);
 }
 
 
-void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) {
+void KeyedLoadIC::GenerateMiss(MacroAssembler* masm, bool force_generic) {
   // ----------- S t a t e -------------
   //  -- rax    : key
   //  -- rdx    : receiver
   //  -- rsp[0]  : return address
   // -----------------------------------
 
   Counters* counters = masm->isolate()->counters();
   __ IncrementCounter(counters->keyed_load_miss(), 1);
 
   __ pop(rbx);
   __ push(rdx);  // receiver
   __ push(rax);  // name
   __ push(rbx);  // return address
 
   // Perform tail call to the entry.
-  ExternalReference ref
-      = ExternalReference(IC_Utility(kKeyedLoadIC_Miss), masm->isolate());
+  ExternalReference ref = force_generic
+      ? ExternalReference(IC_Utility(kKeyedLoadIC_MissForceGeneric),
+                          masm->isolate())
+      : ExternalReference(IC_Utility(kKeyedLoadIC_Miss), masm->isolate());
   __ TailCallExternalReference(ref, 2, 1);
 }
 
 
 void KeyedLoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- rax    : key
   //  -- rdx    : receiver
   //  -- rsp[0]  : return address
   // -----------------------------------
@@ skipping 163 matching lines @@
   __ push(rax);  // value
   __ Push(Smi::FromInt(NONE));          // PropertyAttributes
   __ Push(Smi::FromInt(strict_mode));   // Strict mode.
   __ push(rbx);  // return address
 
   // Do tail-call to runtime routine.
   __ TailCallRuntime(Runtime::kSetProperty, 5, 1);
 }
 
 
-void KeyedStoreIC::GenerateMiss(MacroAssembler* masm) {
+void KeyedStoreIC::GenerateMiss(MacroAssembler* masm, bool force_generic) {
   // ----------- S t a t e -------------
   //  -- rax     : value
   //  -- rcx     : key
   //  -- rdx     : receiver
   //  -- rsp[0]  : return address
   // -----------------------------------
 
   __ pop(rbx);
   __ push(rdx);  // receiver
   __ push(rcx);  // key
   __ push(rax);  // value
   __ push(rbx);  // return address
 
   // Do tail-call to runtime routine.
-  ExternalReference ref =
-      ExternalReference(IC_Utility(kKeyedStoreIC_Miss), masm->isolate());
+  ExternalReference ref = force_generic
+    ? ExternalReference(IC_Utility(kKeyedStoreIC_MissForceGeneric),
+                        masm->isolate())
+    : ExternalReference(IC_Utility(kKeyedStoreIC_Miss), masm->isolate());
   __ TailCallExternalReference(ref, 3, 1);
 }
 
 
 #undef __
 
 
 Condition CompareIC::ComputeCondition(Token::Value op) {
   switch (op) {
     case Token::EQ_STRICT:
@@ skipping 86 matching lines @@
   Condition cc = *jmp_address == Assembler::kJncShortOpcode
       ? not_zero
       : zero;
   *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64