Add map-based read barrier to WeakCell

src/ic/ia32/handler-compiler-ia32.cc

Index: src/ic/ia32/handler-compiler-ia32.cc
diff --git a/src/ic/ia32/handler-compiler-ia32.cc b/src/ic/ia32/handler-compiler-ia32.cc
index d5221cb1ed3189224c485c67ceefe049945c68ab..7cdcaa8646ddc518db0f3b7c12e946fbe393f99b 100644
--- a/src/ic/ia32/handler-compiler-ia32.cc
+++ b/src/ic/ia32/handler-compiler-ia32.cc
@@ -229,7 +229,7 @@ void PropertyHandlerCompiler::GenerateCheckPropertyCell(
   DCHECK(cell->value()->IsTheHole());
   Factory* factory = masm->isolate()->factory();
   Handle<WeakCell> weak_cell = factory->NewWeakCell(cell);
-  __ LoadWeakValue(scratch, weak_cell, miss);
+  __ LoadWeakValueNoReadBarrier(scratch, weak_cell, miss);
   __ cmp(FieldOperand(scratch, PropertyCell::kValueOffset),
          Immediate(factory->the_hole_value()));
   __ j(not_equal, miss);
@@ -363,7 +363,7 @@ void NamedStoreHandlerCompiler::GenerateRestoreMap(Handle<Map> transition,
   Handle<WeakCell> cell = Map::WeakCellForMap(transition);
   Register map_reg = StoreTransitionDescriptor::MapRegister();
   DCHECK(!map_reg.is(scratch));
-  __ LoadWeakValue(map_reg, cell, miss);
+  __ LoadWeakValue(map_reg, cell, scratch, miss);
   if (transition->CanBeDeprecated()) {
     __ mov(scratch, FieldOperand(map_reg, Map::kBitField3Offset));
     __ and_(scratch, Immediate(Map::Deprecated::kMask));
@@ -567,7 +567,7 @@ void NamedLoadHandlerCompiler::GenerateLoadCallback(
         isolate()->factory()->NewWeakCell(Handle<HeapObject>::cast(data));
     // The callback is alive if this instruction is executed,
     // so the weak cell is not cleared and points to data.
-    __ GetWeakValue(scratch2(), cell);
+    __ GetWeakValue(scratch2(), scratch1(), cell);
     __ push(scratch2());
   }
   __ push(Immediate(isolate()->factory()->undefined_value()));  // ReturnValue
@@ -740,7 +740,7 @@ Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
   // Get the value from the cell.
   Register result = StoreDescriptor::ValueRegister();
   Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell);
-  __ LoadWeakValue(result, weak_cell, &miss);
+  __ LoadWeakValue(result, weak_cell, scratch1(), &miss);
   __ mov(result, FieldOperand(result, PropertyCell::kValueOffset));
 
   // Check for deleted property if property can actually be deleted.