Revert "Add DoubleTestOp instruction"

runtime/vm/intrinsifier_mips.cc

Index: runtime/vm/intrinsifier_mips.cc
diff --git a/runtime/vm/intrinsifier_mips.cc b/runtime/vm/intrinsifier_mips.cc
index ff354af7f4455fce5ca87bb738162f61e4f2b3ac..748f06dff9d7bdda74aa590ac74a56fae2844ae1 100644
--- a/runtime/vm/intrinsifier_mips.cc
+++ b/runtime/vm/intrinsifier_mips.cc
@@ -1530,27 +1530,6 @@ void Intrinsifier::Double_getIsNaN(Assembler* assembler) {
 }
 
 
-void Intrinsifier::Double_getIsInfinite(Assembler* assembler) {
-  Label not_inf;
-  __ lw(T0, Address(SP, 0 * kWordSize));
-  __ lw(T1, FieldAddress(T0, Double::value_offset()));
-  __ lw(T2, FieldAddress(T0, Double::value_offset() + kWordSize));
-  // If the low word isn't zero, then it isn't infinity.
-  __ bne(T1, ZR, &not_inf);
-  // Mask off the sign bit.
-  __ AndImmediate(T2, T2, 0x7FFFFFFF);
-  // Compare with +infinity.
-  __ BranchNotEqual(T2, Immediate(0x7FF00000), &not_inf);
-
-  __ LoadObject(V0, Bool::True());
-  __ Ret();
-
-  __ Bind(&not_inf);
-  __ LoadObject(V0, Bool::False());
-  __ Ret();
-}
-
-
 void Intrinsifier::Double_getIsNegative(Assembler* assembler) {
   Label is_false, is_true, is_zero;
   __ lw(T0, Address(SP, 0 * kWordSize));