Improved code for megamorphic stub on ia32.

src/ia32/ic-ia32.cc

 // Copyright 2006-2008 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 419 matching lines @@
   Label number, non_number, non_string, boolean, probe, miss;
 
   // Get the receiver of the function from the stack; 1 ~ return address.
   __ mov(edx, Operand(esp, (argc + 1) * kPointerSize));
   // Get the name of the function from the stack; 2 ~ return address, receiver
   __ mov(ecx, Operand(esp, (argc + 2) * kPointerSize));
 
   // Probe the stub cache.
   Code::Flags flags =
       Code::ComputeFlags(Code::CALL_IC, NOT_IN_LOOP, MONOMORPHIC, NORMAL, argc);
-  StubCache::GenerateProbe(masm, flags, edx, ecx, ebx);
+  StubCache::GenerateProbe(masm, flags, edx, ecx, ebx, eax);
 
   // If the stub cache probing failed, the receiver might be a value.
   // For value objects, we use the map of the prototype objects for
   // the corresponding JSValue for the cache and that is what we need
   // to probe.
   //
   // Check for number.
   __ test(edx, Immediate(kSmiTagMask));
   __ j(zero, &number, not_taken);
   __ CmpObjectType(edx, HEAP_NUMBER_TYPE, ebx);
@@ skipping 16 matching lines @@
   __ cmp(edx, Factory::true_value());
   __ j(equal, &boolean, not_taken);
   __ cmp(edx, Factory::false_value());
   __ j(not_equal, &miss, taken);
   __ bind(&boolean);
   StubCompiler::GenerateLoadGlobalFunctionPrototype(
       masm, Context::BOOLEAN_FUNCTION_INDEX, edx);
 
   // Probe the stub cache for the value object.
   __ bind(&probe);
-  StubCache::GenerateProbe(masm, flags, edx, ecx, ebx);
+  StubCache::GenerateProbe(masm, flags, edx, ecx, ebx, no_reg);
 
   // Cache miss: Jump to runtime.
   __ bind(&miss);
   Generate(masm, argc, ExternalReference(IC_Utility(kCallIC_Miss)));
 }
 
 
 static void GenerateNormalHelper(MacroAssembler* masm,
                                  int argc,
                                  bool is_global_object,
@@ skipping 153 matching lines @@
   //  -- esp[0] : return address
   //  -- esp[4] : receiver
   // -----------------------------------
 
   __ mov(eax, Operand(esp, kPointerSize));
 
   // Probe the stub cache.
   Code::Flags flags = Code::ComputeFlags(Code::LOAD_IC,
                                          NOT_IN_LOOP,
                                          MONOMORPHIC);
-  StubCache::GenerateProbe(masm, flags, eax, ecx, ebx);
+  StubCache::GenerateProbe(masm, flags, eax, ecx, ebx, edx);
 
   // Cache miss: Jump to runtime.
   Generate(masm, ExternalReference(IC_Utility(kLoadIC_Miss)));
 }
 
 
 void LoadIC::GenerateNormal(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- ecx    : name
   //  -- esp[0] : return address
@@ skipping 209 matching lines @@
   //  -- ecx    : name
   //  -- esp[0] : return address
   //  -- esp[4] : receiver
   // -----------------------------------
 
   // Get the receiver from the stack and probe the stub cache.
   __ mov(edx, Operand(esp, 4));
   Code::Flags flags = Code::ComputeFlags(Code::STORE_IC,
                                          NOT_IN_LOOP,
                                          MONOMORPHIC);
-  StubCache::GenerateProbe(masm, flags, edx, ecx, ebx);
+  StubCache::GenerateProbe(masm, flags, edx, ecx, ebx, no_reg);
 
   // Cache miss: Jump to runtime.
   Generate(masm, ExternalReference(IC_Utility(kStoreIC_Miss)));
 }
 
 
 void StoreIC::GenerateExtendStorage(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- eax    : value
   //  -- ecx    : transition map
@@ skipping 74 matching lines @@
 
   // Do tail-call to runtime routine.
   __ TailCallRuntime(
       ExternalReference(IC_Utility(kSharedStoreIC_ExtendStorage)), 3);
 }
 
 #undef __
 
 
 } }  // namespace v8::internal