MIPS: Add floor, ceil, round (truncate) instructions for ia32, x64 (if SSE4.1) and add floor, ceil,…

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 637d98b7849773d90d2bca1fd1be592fc6f5dac3..be792b5f28dc5f4989e093af7d89111b47e53f05 100644
--- a/src/compiler/mips/instruction-selector-mips.cc
+++ b/src/compiler/mips/instruction-selector-mips.cc
@@ -56,6 +56,14 @@ class MipsOperandGenerator FINAL : public OperandGenerator {
 };
 
 
+static void VisitRR(InstructionSelector* selector, ArchOpcode opcode,
+                    Node* node) {
+  MipsOperandGenerator g(selector);
+  selector->Emit(opcode, g.DefineAsRegister(node),
+                 g.UseRegister(node->InputAt(0)));
+}
+
+
 static void VisitRRR(InstructionSelector* selector, ArchOpcode opcode,
                      Node* node) {
   MipsOperandGenerator g(selector);
@@ -409,14 +417,18 @@ void InstructionSelector::VisitFloat64Sqrt(Node* node) {
 }
 
 
-void InstructionSelector::VisitFloat64Floor(Node* node) { UNREACHABLE(); }
+void InstructionSelector::VisitFloat64Floor(Node* node) {
+  VisitRR(this, kMipsFloorD, node);
+}
 
 
-void InstructionSelector::VisitFloat64Ceil(Node* node) { UNREACHABLE(); }
+void InstructionSelector::VisitFloat64Ceil(Node* node) {
+  VisitRR(this, kMipsCeilD, node);
+}
 
 
 void InstructionSelector::VisitFloat64RoundTruncate(Node* node) {
-  UNREACHABLE();
+  VisitRR(this, kMipsRoundTruncateD, node);
 }
 
 
@@ -667,10 +679,18 @@ void InstructionSelector::VisitFloat64LessThanOrEqual(Node* node) {
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {
-  return MachineOperatorBuilder::kInt32DivIsSafe |
-         MachineOperatorBuilder::kInt32ModIsSafe |
-         MachineOperatorBuilder::kUint32DivIsSafe |
-         MachineOperatorBuilder::kUint32ModIsSafe;
+  MachineOperatorBuilder::Flags flags =
+      MachineOperatorBuilder::kInt32DivIsSafe |
+      MachineOperatorBuilder::kInt32ModIsSafe |
+      MachineOperatorBuilder::kUint32DivIsSafe |
+      MachineOperatorBuilder::kUint32ModIsSafe;
+
+  if (CpuFeatures::IsSupported(MIPSr2) || CpuFeatures::IsSupported(MIPSr6)) {
+    flags |= MachineOperatorBuilder::kFloat64Floor |
+             MachineOperatorBuilder::kFloat64Ceil |
+             MachineOperatorBuilder::kFloat64RoundTruncate;
+  }
+  return flags;
 }
 
 }  // namespace compiler