A64: Add support for floating-point registers in PushSafepointRegistersScope.

src/a64/assembler-a64.h

 // Copyright 2013 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 238 matching lines @@
   static const int kMaxNumRegisters = kNumberOfFPRegisters;
 
   // Crankshaft can use all the FP registers except:
   //   - d29 which is used in crankshaft as a double scratch register
   //   - d30 which is used to keep the 0 double value
   //   - d31 which is used in the MacroAssembler as a double scratch register
   static const int kNumReservedRegisters = 3;
   static const int kMaxNumAllocatableRegisters =
       kNumberOfFPRegisters - kNumReservedRegisters;
   static int NumAllocatableRegisters() { return kMaxNumAllocatableRegisters; }
+  static const RegList kAllocatableFPRegisters =
+      (1 << kMaxNumAllocatableRegisters) - 1;
 
   static FPRegister FromAllocationIndex(int index) {
     ASSERT((index >= 0) && (index < NumAllocatableRegisters()));
     return from_code(index);
   }
 
   static const char* AllocationIndexToString(int index) {
     ASSERT((index >= 0) && (index < NumAllocatableRegisters()));
     const char* const names[] = {
       "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",
@@ skipping 1764 matching lines @@
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_A64_ASSEMBLER_A64_H_