MIPS64: [turbofan] Support Float64Min and Float64Max.

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 52da27f3ac67150b0e5cde91a3c92f4e5896b4c6..9fd208d376fb6512a10b426b755e7b306f099ae0 100644
--- a/src/compiler/mips64/instruction-selector-mips64.cc
+++ b/src/compiler/mips64/instruction-selector-mips64.cc
@@ -601,16 +601,28 @@ void InstructionSelector::VisitFloat64Mod(Node* node) {
 }
 
 
-void InstructionSelector::VisitFloat32Max(Node* node) { UNREACHABLE(); }
+void InstructionSelector::VisitFloat32Max(Node* node) {
+  DCHECK(kArchVariant == kMips64r6);
+  VisitRRR(this, kMips64MaxS, node);
+}
 
 
-void InstructionSelector::VisitFloat64Max(Node* node) { UNREACHABLE(); }
+void InstructionSelector::VisitFloat64Max(Node* node) {
+  DCHECK(kArchVariant == kMips64r6);
+  VisitRRR(this, kMips64MaxD, node);
+}
 
 
-void InstructionSelector::VisitFloat32Min(Node* node) { UNREACHABLE(); }
+void InstructionSelector::VisitFloat32Min(Node* node) {
+  DCHECK(kArchVariant == kMips64r6);
+  VisitRRR(this, kMips64MinS, node);
+}
 
 
-void InstructionSelector::VisitFloat64Min(Node* node) { UNREACHABLE(); }
+void InstructionSelector::VisitFloat64Min(Node* node) {
+  DCHECK(kArchVariant == kMips64r6);
+  VisitRRR(this, kMips64MinD, node);
+}
 
 
 void InstructionSelector::VisitFloat32Abs(Node* node) {
@@ -1271,8 +1283,16 @@ void InstructionSelector::VisitFloat64InsertHighWord32(Node* node) {
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {
-  return MachineOperatorBuilder::kFloat64RoundDown |
-         MachineOperatorBuilder::kFloat64RoundTruncate;
+  MachineOperatorBuilder::Flags flags =
+      MachineOperatorBuilder::kFloat64RoundDown |
+      MachineOperatorBuilder::kFloat64RoundTruncate;
+  if (kArchVariant == kMips64r6) {
+    flags |= MachineOperatorBuilder::kFloat32Max |
+             MachineOperatorBuilder::kFloat32Min |
+             MachineOperatorBuilder::kFloat64Max |
+             MachineOperatorBuilder::kFloat64Min;
+  }
+  return flags;
 }
 
 }  // namespace compiler