MIPS: Save and restore callee-saved FP registers in cctest/ConvertDToI.

test/cctest/test-code-stubs-mips64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Rrdistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Rrdistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Rrdistributions 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 44 matching lines @@
   MacroAssembler masm(isolate, buffer, static_cast<int>(actual_size));
   DoubleToIStub stub(isolate, source_reg, destination_reg, 0, true,
                      inline_fastpath);
 
   byte* start = stub.GetCode()->instruction_start();
   Label done;
 
   // Save callee save registers.
   __ MultiPush(kCalleeSaved | ra.bit());
 
+  // Save callee-saved FPU registers.
+  __ MultiPushFPU(kCalleeSavedFPU);
+  // Set up the reserved register for 0.0.
+  __ Move(kDoubleRegZero, 0.0);
+
   // For softfp, move the input value into f12.
   if (IsMipsSoftFloatABI) {
     __ Move(f12, a0, a1);
   }
   // Push the double argument.
   __ Dsubu(sp, sp, Operand(kDoubleSize));
   __ sdc1(f12, MemOperand(sp));
   __ Move(source_reg, sp);
 
   // Save registers make sure they don't get clobbered.
@@ skipping 35 matching lines @@
     }
   }
 
   __ Daddu(sp, sp, Operand(kDoubleSize));
 
   __ Move(v0, destination_reg);
   Label ok;
   __ Branch(&ok, eq, v0, Operand(zero_reg));
   __ bind(&ok);
 
+  // Restore callee-saved FPU registers.
+  __ MultiPopFPU(kCalleeSavedFPU);
+
   // Restore callee save registers.
   __ MultiPop(kCalleeSaved | ra.bit());
 
   Label ok1;
   __ Branch(&ok1, eq, v0, Operand(zero_reg));
   __ bind(&ok1);
   __ Ret();
 
   CodeDesc desc;
   masm.GetCode(&desc);
@@ skipping 50 matching lines @@
                                         false));
       RunAllTruncationTests(
           RunGeneratedCodeCallWrapper,
           MakeConvertDToIFuncTrampoline(isolate,
                                         source_registers[s],
                                         dest_registers[d],
                                         true));
     }
   }
 }