[Turbofan]: Use new MachineTypes in access-builder.

src/compiler/arm/instruction-selector-arm.cc

Index: src/compiler/arm/instruction-selector-arm.cc
diff --git a/src/compiler/arm/instruction-selector-arm.cc b/src/compiler/arm/instruction-selector-arm.cc
index 42960c7837f1ee144a6013c811b1c742c74dad9e..568f8cebccd5b717e2c5ec69043df94a39786d3b 100644
--- a/src/compiler/arm/instruction-selector-arm.cc
+++ b/src/compiler/arm/instruction-selector-arm.cc
@@ -431,7 +431,8 @@ void InstructionSelector::VisitStore(Node* node) {
   MachineRepresentation rep = store_rep.representation();
 
   if (write_barrier_kind != kNoWriteBarrier) {
-    DCHECK_EQ(MachineRepresentation::kTagged, rep);
+    DCHECK(rep == MachineRepresentation::kTagged ||
+           rep == MachineRepresentation::kTaggedPointer);

[Jarin, 2016/08/25 05:52:05]

Could you introduce some helper function in machine-type.h that encapsulates
this?

[mvstanton, 2016/08/29 12:02:10]

CanBeTaggedPointer(rep).

     AddressingMode addressing_mode;
     InstructionOperand inputs[3];
     size_t input_count = 0;