MIPS64: [turbofan] Implemented the TruncateFloat64ToUint64 TurboFan operator.

src/compiler/mips64/code-generator-mips64.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/code-generator.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/osr.h"
 #include "src/mips/macro-assembler-mips.h"
@@ skipping 969 matching lines @@
       __ trunc_l_d(scratch, i.InputDoubleRegister(0));
       __ dmfc1(i.OutputRegister(), scratch);
       break;
     }
     case kMips64TruncUwD: {
       FPURegister scratch = kScratchDoubleReg;
       // TODO(plind): Fix wrong param order of Trunc_uw_d() macro-asm function.
       __ Trunc_uw_d(i.InputDoubleRegister(0), i.OutputRegister(), scratch);
       break;
     }
+    case kMips64TruncUlD: {
+      FPURegister scratch = kScratchDoubleReg;
+      // TODO(plind): Fix wrong param order of Trunc_ul_d() macro-asm function.
+      __ Trunc_ul_d(i.InputDoubleRegister(0), i.OutputRegister(), scratch);
+      break;
+    }
     case kMips64BitcastDL:
       __ dmfc1(i.OutputRegister(), i.InputDoubleRegister(0));
       break;
     case kMips64BitcastLD:
       __ dmtc1(i.InputRegister(0), i.OutputDoubleRegister());
       break;
     case kMips64Float64ExtractLowWord32:
       __ FmoveLow(i.OutputRegister(), i.InputDoubleRegister(0));
       break;
     case kMips64Float64ExtractHighWord32:
@@ skipping 701 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8