Saves callee-saved fpu registers on MIPS.

runtime/vm/constants_mips.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_CONSTANTS_MIPS_H_
 #define VM_CONSTANTS_MIPS_H_
 
 #include "platform/assert.h"
 
 namespace dart {
@@ skipping 198 matching lines @@
     (1 << A0) | (1 << A1) | (1 << A2) | (1 << A3);
 const RegList kAbiPreservedCpuRegs =
     (1 << S0) | (1 << S1) | (1 << S2) | (1 << S3) |
     (1 << S4) | (1 << S5) | (1 << S6) | (1 << S7);
 const int kAbiPreservedCpuRegCount = 8;
 
 // FPU registers 20 - 31 are preserved across calls.
 const FRegister kAbiFirstPreservedFpuReg = F20;
 const FRegister kAbiLastPreservedFpuReg =
     static_cast<FRegister>(kNumberOfFRegisters - 1);
+const int kAbiPreservedFpuRegCount = 12;
 
 // CPU registers available to Dart allocator.
 const RegList kDartAvailableCpuRegs =
     (1 << R2) | (1 << R3) | (1 << R4) | (1 << R5) |
     (1 << R6) | (1 << R7) | (1 << R8) | (1 << R9) |
     (1 << R10) | (1 << R11) | (1 << R12) | (1 << R13) |
     (1 << R14) | (1 << R15) | (1 << R16) | (1 << R17) |
     (1 << R18) | (1 << R19) | (1 << R20) | (1 << R21);
 const RegList kDartVolatileCpuRegs =
     kDartAvailableCpuRegs & ~kAbiPreservedCpuRegs;
@@ skipping 385 matching lines @@
 #endif  // defined(DEBUG)
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
 };
 
 }  // namespace dart
 
 #endif  // VM_CONSTANTS_MIPS_H_