[SubZero] Fix code generation issues occurred in Cross-test and PNaCL smoke-tests

src/IceInstMIPS32.cpp

 //===- subzero/src/IceInstMips32.cpp - Mips32 instruction implementation --===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 /// \file
@@ skipping 297 matching lines @@
   }
 
   if (Src64 == nullptr) {
     addSource(Src);
   } else {
     addSource(Src64->getLo());
     addSource(Src64->getHi());
   }
 }
 
+InstMIPS32MovFP64ToI64::InstMIPS32MovFP64ToI64(Cfg *Func, Variable *Dst,
+                                               Operand *Src,
+                                               Int64Part Int64HiLo)
+    : InstMIPS32(Func, InstMIPS32::Mov_fp, 1, Dst), Int64HiLo(Int64HiLo) {
+  addSource(Src);
+}
+
 InstMIPS32Ret::InstMIPS32Ret(Cfg *Func, Variable *RA, Variable *Source)
     : InstMIPS32(Func, InstMIPS32::Ret, Source ? 2 : 1, nullptr) {
   addSource(RA);
   if (Source)
     addSource(Source);
 }
 
 // ======================== Dump routines ======================== //
 
 void InstMIPS32::dump(const Cfg *Func) const {
@@ skipping 900 matching lines @@
   Asm->xor_(getDest(), getSrc(0), getSrc(1));
 }
 
 template <> void InstMIPS32Xori::emitIAS(const Cfg *Func) const {
   auto *Asm = Func->getAssembler<MIPS32::AssemblerMIPS32>();
   Asm->xori(getDest(), getSrc(0), Imm);
 }
 
 } // end of namespace MIPS32
 } // end of namespace Ice