MIPS: Fix '[turbofan] Introduce new operators Float32SubPreserveNan and Float64SubPreserveNan'.

src/compiler/mips/instruction-selector-mips.cc

Index: src/compiler/mips/instruction-selector-mips.cc
diff --git a/src/compiler/mips/instruction-selector-mips.cc b/src/compiler/mips/instruction-selector-mips.cc
index 8be2539444fea4e94955de993620fff953f31750..3e52050396db70a4700d68eb04bbe045c71312f1 100644
--- a/src/compiler/mips/instruction-selector-mips.cc
+++ b/src/compiler/mips/instruction-selector-mips.cc
@@ -755,7 +755,10 @@ void InstructionSelector::VisitFloat32Sub(Node* node) {
 }
 
 void InstructionSelector::VisitFloat32SubPreserveNan(Node* node) {
-  VisitRRR(this, kMipsSubS, node);
+  MipsOperandGenerator g(this);
+  Emit(kMipsSubPreserveNanS, g.DefineAsRegister(node),
+       g.UseUniqueRegister(node->InputAt(0)),
+       g.UseUniqueRegister(node->InputAt(1)));
 }
 
 void InstructionSelector::VisitFloat64Sub(Node* node) {
@@ -777,7 +780,10 @@ void InstructionSelector::VisitFloat64Sub(Node* node) {
 }
 
 void InstructionSelector::VisitFloat64SubPreserveNan(Node* node) {
-  VisitRRR(this, kMipsSubD, node);
+  MipsOperandGenerator g(this);
+  Emit(kMipsSubPreserveNanD, g.DefineAsRegister(node),
+       g.UseUniqueRegister(node->InputAt(0)),
+       g.UseUniqueRegister(node->InputAt(1)));
 }
 
 void InstructionSelector::VisitFloat32Mul(Node* node) {