Make translation of modulus operation '--stress-opt'-proof.

src/hydrogen.cc

 // Copyright 2013 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 9207 matching lines @@
       case Token::ADD:
         instr = AddUncasted<HAdd>(left, right);
         break;
       case Token::SUB:
         instr = AddUncasted<HSub>(left, right);
         break;
       case Token::MUL:
         instr = AddUncasted<HMul>(left, right);
         break;
       case Token::MOD: {
-        if (fixed_right_arg.has_value) {
-          if (right->IsConstant()) {
-            HConstant* c_right = HConstant::cast(right);
-            if (c_right->HasInteger32Value()) {
-              ASSERT_EQ(fixed_right_arg.value, c_right->Integer32Value());
-            }
-          } else {
-            HConstant* fixed_right = Add<HConstant>(
-                static_cast<int>(fixed_right_arg.value));
-            IfBuilder if_same(this);
-            if_same.If<HCompareNumericAndBranch>(right, fixed_right, Token::EQ);
-            if_same.Then();
-            if_same.ElseDeopt("Unexpected RHS of binary operation");
-            right = fixed_right;
-          }
+        if (fixed_right_arg.has_value &&
+            !right->EqualsInteger32Constant(fixed_right_arg.value)) {
+          HConstant* fixed_right = Add<HConstant>(
+              static_cast<int>(fixed_right_arg.value));
+          IfBuilder if_same(this);
+          if_same.If<HCompareNumericAndBranch>(right, fixed_right, Token::EQ);
+          if_same.Then();
+          if_same.ElseDeopt("Unexpected RHS of binary operation");
+          right = fixed_right;
         }
         instr = AddUncasted<HMod>(left, right);
         break;
       }
       case Token::DIV:
         instr = AddUncasted<HDiv>(left, right);
         break;
       case Token::BIT_XOR:
       case Token::BIT_AND:
         instr = AddUncasted<HBitwise>(op, left, right);
@@ skipping 2045 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal