RecordWriteStubs on ARM need to save FP registers

src/arm/code-stubs-arm.h

Index: src/arm/code-stubs-arm.h
diff --git a/src/arm/code-stubs-arm.h b/src/arm/code-stubs-arm.h
index 75cbf6582c6bd19c8de1b0090a86c7d7fe557539..794fb936b7d5c797ba10d5551e0bb66b055c6068 100644
--- a/src/arm/code-stubs-arm.h
+++ b/src/arm/code-stubs-arm.h
@@ -469,34 +469,14 @@ class RecordWriteStub: public PlatformCodeStub {
     void SaveCallerSaveRegisters(MacroAssembler* masm, SaveFPRegsMode mode) {
       masm->stm(db_w, sp, (kCallerSaved | lr.bit()) & ~scratch1_.bit());
       if (mode == kSaveFPRegs) {
-        // Number of d-regs not known at snapshot time.
-        ASSERT(!Serializer::enabled());
-        masm->sub(sp,
-                  sp,
-                  Operand(kDoubleSize * (DwVfpRegister::NumRegisters() - 1)));
-        // Save all VFP registers except d0.
-        // TODO(hans): We should probably save d0 too. And maybe use vstm.
-        for (int i = DwVfpRegister::NumRegisters() - 1; i > 0; i--) {
-          DwVfpRegister reg = DwVfpRegister::from_code(i);
-          masm->vstr(reg, MemOperand(sp, (i - 1) * kDoubleSize));
-        }
+        masm->SaveFPRegs(sp, scratch0_);
       }
     }
 
     inline void RestoreCallerSaveRegisters(MacroAssembler*masm,
                                            SaveFPRegsMode mode) {
       if (mode == kSaveFPRegs) {
-        // Number of d-regs not known at snapshot time.
-        ASSERT(!Serializer::enabled());
-        // Restore all VFP registers except d0.
-        // TODO(hans): We should probably restore d0 too. And maybe use vldm.
-        for (int i = DwVfpRegister::NumRegisters() - 1; i > 0; i--) {
-          DwVfpRegister reg = DwVfpRegister::from_code(i);
-          masm->vldr(reg, MemOperand(sp, (i - 1) * kDoubleSize));
-        }
-        masm->add(sp,
-                  sp,
-                  Operand(kDoubleSize * (DwVfpRegister::NumRegisters() - 1)));
+        masm->RestoreFPRegs(sp, scratch0_);
       }
       masm->ldm(ia_w, sp, (kCallerSaved | lr.bit()) & ~scratch1_.bit());
     }