[arm] Clean up use of IsSupported and IsEnabled.

src/arm/assembler-arm.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 1585 matching lines @@
       //    trigger a check.
       next_buffer_check_ = no_const_pool_before_;
     }
   }
 
   bool is_const_pool_blocked() const {
     return (const_pool_blocked_nesting_ > 0) ||
            (pc_offset() < no_const_pool_before_);
   }
 
+  bool VfpRegisterIsAvailable(DwVfpRegister reg) {
+    DCHECK(reg.is_valid());
+    return IsEnabled(VFP32DREGS) ||
+           (reg.reg_code < LowDwVfpRegister::kMaxNumLowRegisters);
+  }
+
  private:
   int next_buffer_check_;  // pc offset of next buffer check
 
   // Code generation
   // The relocation writer's position is at least kGap bytes below the end of
   // the generated instructions. This is so that multi-instruction sequences do
   // not have to check for overflow. The same is true for writes of large
   // relocation info entries.
   static const int kGap = 32;
 
@@ skipping 86 matching lines @@
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ARM_ASSEMBLER_ARM_H_