[turbofan] Added the optional Float64RoundUp operator to turbofan.

src/compiler/mips64/instruction-selector-mips64.cc

Index: src/compiler/mips64/instruction-selector-mips64.cc
diff --git a/src/compiler/mips64/instruction-selector-mips64.cc b/src/compiler/mips64/instruction-selector-mips64.cc
index 7b6ea0812dae4df0647010769a27672e733ce9ab..eae1d3f39dbcd12e68ba942af5f7f729d0d0b41e 100644
--- a/src/compiler/mips64/instruction-selector-mips64.cc
+++ b/src/compiler/mips64/instruction-selector-mips64.cc
@@ -802,6 +802,11 @@ void InstructionSelector::VisitFloat64RoundDown(Node* node) {
 }
 
 
+void InstructionSelector::VisitFloat64RoundUp(Node* node) {
+  VisitRR(this, kMips64Float64RoundUp, node);
+}
+
+
 void InstructionSelector::VisitFloat64RoundTruncate(Node* node) {
   VisitRR(this, kMips64Float64RoundTruncate, node);
 }
@@ -1392,6 +1397,7 @@ InstructionSelector::SupportedMachineOperatorFlags() {
          MachineOperatorBuilder::kFloat32Min |
          MachineOperatorBuilder::kFloat32Max |
          MachineOperatorBuilder::kFloat64RoundDown |
+         MachineOperatorBuilder::kFloat64RoundUp |
          MachineOperatorBuilder::kFloat64RoundTruncate;
 }