[turbofan] Introduce simplified NumberBitwise{Or,Xor,And} operators.

src/deoptimizer.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/deoptimizer.h"
 
 #include "src/accessors.h"
 #include "src/codegen.h"
 #include "src/disasm.h"
 #include "src/frames-inl.h"
@@ skipping 2473 matching lines @@
     }
 
     case kUInt32: {
       bool is_smi = (uint32_value() <= static_cast<uintptr_t>(Smi::kMaxValue));
       if (is_smi) {
         return Smi::FromInt(static_cast<int32_t>(uint32_value()));
       }
       break;
     }
 
-    case kDouble: {
-      int int_value = FastD2IChecked(double_value());
-      bool is_smi = !IsMinusZero(double_value()) &&
-                    double_value() == int_value && Smi::IsValid(int_value);
-      if (is_smi) {
-        return Smi::FromInt(static_cast<int32_t>(int_value));
-      }
-      break;
-    }
-
     case kBoolBit: {
       if (uint32_value() == 0) {
         return isolate()->heap()->false_value();
       } else {
         CHECK_EQ(1U, uint32_value());
         return isolate()->heap()->true_value();
       }
     }
 
     default:
@@ skipping 52 matching lines @@
     case kInt32: {
       value_ = Handle<Object>(isolate()->factory()->NewNumber(int32_value()));
       return;
     }
 
     case kUInt32:
       value_ = Handle<Object>(isolate()->factory()->NewNumber(uint32_value()));
       return;
 
     case kDouble:
-      value_ = Handle<Object>(isolate()->factory()->NewNumber(double_value()));
+      value_ =
+          Handle<Object>(isolate()->factory()->NewHeapNumber(double_value()));

[Jarin, 2015/10/27 08:42:28]

FYI, this is not what the deoptimizer was doing originally here. We have always
been calling NewNumber.

[Benedikt Meurer, 2015/10/27 08:48:50]

As discussed offline, changing this back to NewNumber.

       return;
 
     case kCapturedObject:
     case kDuplicatedObject:
     case kArgumentsObject:
     case kInvalid:
     case kTagged:
     case kBoolBit:
       FATAL("internal error: unexpected materialization.");
       break;
@@ skipping 825 matching lines @@
       DCHECK(value_info->IsMaterializedObject());
 
       value_info->value_ =
           Handle<Object>(previously_materialized_objects->get(i), isolate_);
     }
   }
 }
 
 }  // namespace internal
 }  // namespace v8