MIPS: Use AST's type field and merge types for unary, binary & compare ICs.

src/mips/code-stubs-mips.cc

 // Copyright 2012 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 2308 matching lines @@
         masm, BinaryOpIC::UNINITIALIZED, BinaryOpIC::UNINITIALIZED, true,
         use_runtime, gc_required, &not_smis, op, mode);
   }
   __ bind(&not_smis);
 }
 
 
 void BinaryOpStub::GenerateSmiStub(MacroAssembler* masm) {
   Label right_arg_changed, call_runtime;
 
-  if (op_ == Token::MOD && has_fixed_right_arg_) {
+  if (op_ == Token::MOD && encoded_right_arg_.has_value) {
     // It is guaranteed that the value will fit into a Smi, because if it
     // didn't, we wouldn't be here, see BinaryOp_Patch.
     __ Branch(&right_arg_changed,
               ne,
               a0,
               Operand(Smi::FromInt(fixed_right_arg_value())));
   }
 
   if (result_type_ == BinaryOpIC::UNINITIALIZED ||
       result_type_ == BinaryOpIC::SMI) {
@@ skipping 194 matching lines @@
                                                   mode_);
         __ sdc1(f10,
                 FieldMemOperand(heap_number_result, HeapNumber::kValueOffset));
         __ Ret(USE_DELAY_SLOT);
         __ mov(v0, heap_number_result);
 
         // A DIV operation expecting an integer result falls through
         // to type transition.
 
       } else {
-        if (has_fixed_right_arg_) {
+        if (encoded_right_arg_.has_value) {
           __ Move(f16, fixed_right_arg_value());
           __ BranchF(&transition, NULL, ne, f14, f16);
         }
 
         // We preserved a0 and a1 to be able to call runtime.
         // Save the left value on the stack.
         __ Push(t1, t0);
 
         Label pop_and_call_runtime;
 
@@ skipping 5360 matching lines @@
     __ Jump(generic_construct_stub, RelocInfo::CODE_TARGET);
   }
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS