[turbofan] Implement the correct semantics for integer division/modulus.

src/compiler/machine-operator-reducer.h

Index: src/compiler/machine-operator-reducer.h
diff --git a/src/compiler/machine-operator-reducer.h b/src/compiler/machine-operator-reducer.h
index 92c2337b9b9f5c5757dc5864033555d56f116105..475ed2ecdd9db413d5f41642aebd5edc3f1d27c2 100644
--- a/src/compiler/machine-operator-reducer.h
+++ b/src/compiler/machine-operator-reducer.h
@@ -37,6 +37,7 @@ class MachineOperatorReducer FINAL : public Reducer {
   Node* Word32And(Node* lhs, uint32_t rhs);
   Node* Word32Sar(Node* lhs, uint32_t rhs);
   Node* Word32Shr(Node* lhs, uint32_t rhs);
+  Node* Word32Equal(Node* lhs, Node* rhs);
   Node* Int32Add(Node* lhs, Node* rhs);
   Node* Int32Sub(Node* lhs, Node* rhs);
   Node* Int32Mul(Node* lhs, Node* rhs);
@@ -53,12 +54,17 @@ class MachineOperatorReducer FINAL : public Reducer {
   Reduction ReplaceInt32(int32_t value) {
     return Replace(Int32Constant(value));
   }
+  Reduction ReplaceUint32(uint32_t value) {
+    return Replace(Uint32Constant(value));
+  }
   Reduction ReplaceInt64(int64_t value) {
     return Replace(Int64Constant(value));
   }
 
   Reduction ReduceInt32Div(Node* node);
+  Reduction ReduceUint32Div(Node* node);
   Reduction ReduceInt32Mod(Node* node);
+  Reduction ReduceUint32Mod(Node* node);
   Reduction ReduceProjection(size_t index, Node* node);
 
   Graph* graph() const;