Remove dangerous default parameter from machine Store operator.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/451593002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22970 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/compiler/machine-node-factory.h

@@ -100,7 +100,7 @@ class MachineNodeFactory {
     Store(rep, base, Int32Constant(0), value);
   }
   void Store(MachineRepresentation rep, Node* base, Node* index, Node* value) {
-    NEW_NODE_3(MACHINE()->Store(rep), base, index, value);
+    NEW_NODE_3(MACHINE()->Store(rep, kNoWriteBarrier), base, index, value);
   }
   // Arithmetic Operations.
   Node* WordAnd(Node* a, Node* b) {

src/compiler/machine-operator.h

@@ -87,8 +87,7 @@ class MachineOperatorBuilder {
     OP1(Load, MachineRepresentation, rep, Operator::kNoWrite, 2, 1);
   }
   // store [base + index], value
-  Operator* Store(MachineRepresentation rep,
-                  WriteBarrierKind kind = kNoWriteBarrier) {
+  Operator* Store(MachineRepresentation rep, WriteBarrierKind kind) {
     StoreRepresentation store_rep = {rep, kind};
     OP1(Store, StoreRepresentation, store_rep, Operator::kNoRead, 3, 0);
   }

test/cctest/compiler/test-changes-lowering.cc

@@ -213,7 +213,8 @@ TEST(RunChangeTaggedToFloat64) {
   double result;
 
   t.BuildStoreAndLower(t.simplified()->ChangeTaggedToFloat64(),
-                       t.machine()->Store(kMachineFloat64), &result);
+                       t.machine()->Store(kMachineFloat64, kNoWriteBarrier),
+                       &result);
 
   if (Pipeline::SupportedTarget()) {
     FOR_INT32_INPUTS(i) {

test/cctest/compiler/test-machine-operator-reducer.cc

@@ -639,8 +639,8 @@ TEST(ReduceLoadStore) {
   }
 
   {
-    Node* store =
-        R.graph.NewNode(R.machine.Store(kMachineWord32), base, index, load);
+    Node* store = R.graph.NewNode(
+        R.machine.Store(kMachineWord32, kNoWriteBarrier), base, index, load);
     MachineOperatorReducer reducer(&R.graph);
     Reduction reduction = reducer.Reduce(store);
     CHECK(!reduction.Changed());  // stores should not be reduced.