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

src/IceInstMIPS32.cpp

Index: src/IceInstMIPS32.cpp
diff --git a/src/IceInstMIPS32.cpp b/src/IceInstMIPS32.cpp
index b6eefe957432f2783d7ed0d35320c3c845ecf2c5..1506e020edf1aa014823760e1e3452b4fd9fab0b 100644
--- a/src/IceInstMIPS32.cpp
+++ b/src/IceInstMIPS32.cpp
@@ -315,6 +315,13 @@ InstMIPS32Mov::InstMIPS32Mov(Cfg *Func, Variable *Dest, Operand *Src,
   }
 }
 
+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);