[turbofan] Implemented the optional Float32RoundUp operator.

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 cf29f39f10d90ae1370b826635385ddfb5ca7923..7c13a2c012eb729967b1965a150de4e861c1d81d 100644
--- a/src/compiler/mips/instruction-selector-mips.cc
+++ b/src/compiler/mips/instruction-selector-mips.cc
@@ -655,6 +655,9 @@ void InstructionSelector::VisitFloat64RoundDown(Node* node) {
 }
 
 
+void InstructionSelector::VisitFloat32RoundUp(Node* node) { UNREACHABLE(); }
+
+
 void InstructionSelector::VisitFloat64RoundUp(Node* node) {
   VisitRR(this, kMipsFloat64RoundUp, node);
 }