RegisterAllocator: Clean up before adding aliasing.

src/compiler/register-allocator.h

Index: src/compiler/register-allocator.h
diff --git a/src/compiler/register-allocator.h b/src/compiler/register-allocator.h
index 6d3b786408d92c59103dbc1a19bcf6b73de113f8..7dc1c3d737c42a47ec74c7342e0d03b62f47682e 100644
--- a/src/compiler/register-allocator.h
+++ b/src/compiler/register-allocator.h
@@ -246,11 +246,9 @@ enum class UsePositionHintType : uint8_t {
 static const int32_t kUnassignedRegister =
     RegisterConfiguration::kMaxGeneralRegisters;
 
-
-static_assert(kUnassignedRegister <= RegisterConfiguration::kMaxDoubleRegisters,
+static_assert(kUnassignedRegister <= RegisterConfiguration::kMaxFPRegisters,
               "kUnassignedRegister too small");
 
-
 // Representation of a use position.
 class UsePosition final : public ZoneObject {
  public:
@@ -859,8 +857,6 @@ class RegisterAllocationData final : public ZoneObject {
   const char* const debug_name_;
   const RegisterConfiguration* const config_;
   PhiMap phi_map_;
-  ZoneVector<int> allocatable_codes_;
-  ZoneVector<int> allocatable_double_codes_;
   ZoneVector<BitVector*> live_in_sets_;
   ZoneVector<BitVector*> live_out_sets_;
   ZoneVector<TopLevelLiveRange*> live_ranges_;