IA32: Optimize instanceof...

src/ia32/lithium-codegen-ia32.cc

 // Copyright 2010 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 1681 matching lines @@
   Register reg = ToRegister(instr->input());
   int true_block = instr->true_block_id();
   int false_block = instr->false_block_id();
 
   __ cmp(FieldOperand(reg, HeapObject::kMapOffset), instr->map());
   EmitBranch(true_block, false_block, equal);
 }
 
 
 void LCodeGen::DoInstanceOf(LInstanceOf* instr) {
-  InstanceofStub stub;
-  __ push(ToOperand(instr->left()));
-  __ push(ToOperand(instr->right()));
+  // Object and function are in fixed registers eax and edx.
+  InstanceofStub stub(InstanceofStub::kArgsInRegisters);
   CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
 
   NearLabel true_value, done;
   __ test(eax, Operand(eax));
   __ j(zero, &true_value);
   __ mov(ToRegister(instr->result()), Factory::false_value());
   __ jmp(&done);
   __ bind(&true_value);
   __ mov(ToRegister(instr->result()), Factory::true_value());
   __ bind(&done);
 }
 
 
 void LCodeGen::DoInstanceOfAndBranch(LInstanceOfAndBranch* instr) {
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
 
-  InstanceofStub stub;
-  __ push(ToOperand(instr->left()));
-  __ push(ToOperand(instr->right()));
+  InstanceofStub stub(InstanceofStub::kArgsInRegisters);
   CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
   __ test(eax, Operand(eax));
   EmitBranch(true_block, false_block, zero);
 }
 
 
 static Condition ComputeCompareCondition(Token::Value op) {
   switch (op) {
     case Token::EQ_STRICT:
     case Token::EQ:
@@ skipping 1511 matching lines @@
   ASSERT(!environment->HasBeenRegistered());
   RegisterEnvironmentForDeoptimization(environment);
   ASSERT(osr_pc_offset_ == -1);
   osr_pc_offset_ = masm()->pc_offset();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal