Translate NumberDivide/NumberModulus operators to Int32Div, Int32Mod in representation-change.h.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/597083002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24171 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/compiler/change-lowering.h

@@ -26,8 +26,6 @@ class ChangeLowering FINAL : public Reducer {
   virtual Reduction Reduce(Node* node) OVERRIDE;
 
  private:
-  enum Signedness { kSigned, kUnsigned };
-
   Node* HeapNumberValueIndexConstant();
   Node* SmiMaxValueConstant();
   Node* SmiShiftBitsConstant();

src/compiler/machine-operator-reducer.cc

@@ -443,7 +443,6 @@ Reduction MachineOperatorReducer::Reduce(Node* node) {
       if (m.IsChangeFloat32ToFloat64()) return Replace(m.node()->InputAt(0));
       break;
     }
-    // TODO(turbofan): strength-reduce and fold floating point operations.
     default:
       break;
   }

src/compiler/representation-change.h

@@ -235,6 +235,12 @@ class RepresentationChanger {
         return machine()->Int32Add();
       case IrOpcode::kNumberSubtract:
         return machine()->Int32Sub();
+      case IrOpcode::kNumberMultiply:
+        return machine()->Int32Mul();
+      case IrOpcode::kNumberDivide:
+        return machine()->Int32Div();
+      case IrOpcode::kNumberModulus:
+        return machine()->Int32Mod();
       case IrOpcode::kNumberEqual:
         return machine()->Word32Equal();
       case IrOpcode::kNumberLessThan:
@@ -253,6 +259,12 @@ class RepresentationChanger {
         return machine()->Int32Add();
       case IrOpcode::kNumberSubtract:
         return machine()->Int32Sub();
+      case IrOpcode::kNumberMultiply:
+        return machine()->Int32Mul();
+      case IrOpcode::kNumberDivide:
+        return machine()->Int32UDiv();
+      case IrOpcode::kNumberModulus:
+        return machine()->Int32UMod();
       case IrOpcode::kNumberEqual:
         return machine()->Word32Equal();
       case IrOpcode::kNumberLessThan:

src/globals.h

@@ -769,6 +769,9 @@ enum MinusZeroMode {
 };
 
 
+enum Signedness { kSigned, kUnsigned };
+
+
 enum FunctionKind {
   kNormalFunction = 0,
   kArrowFunction = 1,