[turbofan] Use unboxed doubles in range types.

src/compiler/js-typed-lowering.cc

 // Copyright 2014 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/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/node-aux-data-inl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 12 matching lines @@
 // with the effect input to {node}.
 // TODO(turbofan): replace the effect input to {node} with {graph->start()}.
 // TODO(titzer): move into a GraphEditor?
 static void RelaxEffects(Node* node) {
   NodeProperties::ReplaceWithValue(node, node, NULL);
 }
 
 
 JSTypedLowering::JSTypedLowering(JSGraph* jsgraph, Zone* zone)
     : jsgraph_(jsgraph), simplified_(graph()->zone()), conversions_(zone) {
-  Handle<Object> zero = factory()->NewNumber(0.0);
-  Handle<Object> one = factory()->NewNumber(1.0);
-  zero_range_ = Type::Range(zero, zero, graph()->zone());
-  one_range_ = Type::Range(one, one, graph()->zone());
-  Handle<Object> thirtyone = factory()->NewNumber(31.0);
-  zero_thirtyone_range_ = Type::Range(zero, thirtyone, graph()->zone());
+  zero_range_ = Type::Range(0.0, 1.0, graph()->zone());
+  one_range_ = Type::Range(1.0, 1.0, graph()->zone());
+  zero_thirtyone_range_ = Type::Range(0.0, 31.0, graph()->zone());
   // TODO(jarin): Can we have a correctification of the stupid type system?
   // These stupid work-arounds are just stupid!
   shifted_int32_ranges_[0] = Type::Signed32();
   if (SmiValuesAre31Bits()) {
     shifted_int32_ranges_[1] = Type::SignedSmall();
     for (size_t k = 2; k < arraysize(shifted_int32_ranges_); ++k) {
-      Handle<Object> min = factory()->NewNumber(kMinInt / (1 << k));
-      Handle<Object> max = factory()->NewNumber(kMaxInt / (1 << k));
+      double min = kMinInt / (1 << k);
+      double max = kMaxInt / (1 << k);
       shifted_int32_ranges_[k] = Type::Range(min, max, graph()->zone());
     }
   } else {
     for (size_t k = 1; k < arraysize(shifted_int32_ranges_); ++k) {
-      Handle<Object> min = factory()->NewNumber(kMinInt / (1 << k));
-      Handle<Object> max = factory()->NewNumber(kMaxInt / (1 << k));
+      double min = kMinInt / (1 << k);
+      double max = kMaxInt / (1 << k);
       shifted_int32_ranges_[k] = Type::Range(min, max, graph()->zone());
     }
   }
 }
 
 
 Reduction JSTypedLowering::ReplaceEagerly(Node* old, Node* node) {
   NodeProperties::ReplaceWithValue(old, node, node);
   return Changed(node);
 }
@@ skipping 949 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSTypedLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8