1 files changed, 66 insertions, 0 deletions
diff --git a/llvm/lib/Target/Mips/MipsInstructionSelector.cpp b/llvm/lib/Target/Mips/MipsInstructionSelector.cpp
new file mode 100644
index 00000000000..c94ccba479d
--- /dev/null
+++ b/llvm/lib/Target/Mips/MipsInstructionSelector.cpp
@@ -0,0 +1,66 @@
+//===- MipsInstructionSelector.cpp ------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+/// \file
+/// This file implements the targeting of the InstructionSelector class for
+/// Mips.
+/// \todo This should be generated by TableGen.
+//===----------------------------------------------------------------------===//
+
+#include "MipsRegisterBankInfo.h"
+#include "MipsSubtarget.h"
+#include "MipsTargetMachine.h"
+#include "llvm/Support/Debug.h"
+
+using namespace llvm;
+
+namespace {
+
+class MipsInstructionSelector : public InstructionSelector {
+public:
+  MipsInstructionSelector(const MipsTargetMachine &TM, const MipsSubtarget &STI,
+                          const MipsRegisterBankInfo &RBI);
+
+  bool select(MachineInstr &I, CodeGenCoverage &CoverageInfo) const override;
+
+private:
+  const MipsTargetMachine &TM;
+  const MipsSubtarget &STI;
+  const MipsInstrInfo &TII;
+  const MipsRegisterInfo &TRI;
+  const MipsRegisterBankInfo &RBI;
+};
+
+} // end anonymous namespace
+
+MipsInstructionSelector::MipsInstructionSelector(
+    const MipsTargetMachine &TM, const MipsSubtarget &STI,
+    const MipsRegisterBankInfo &RBI)
+    : InstructionSelector(), TM(TM), STI(STI), TII(*STI.getInstrInfo()),
+      TRI(*STI.getRegisterInfo()), RBI(RBI) {}
+
+bool MipsInstructionSelector::select(MachineInstr &I,
+                                     CodeGenCoverage &CoverageInfo) const {
+
+  if (!isPreISelGenericOpcode(I.getOpcode())) {
+    // Not global isel generic opcode.
+    // TODO: select copy
+    return true;
+  }
+
+  // We didn't select anything.
+  return false;
+}
+
+namespace llvm {
+InstructionSelector *createMipsInstructionSelector(const MipsTargetMachine &TM,
+                                                   MipsSubtarget &Subtarget,
+                                                   MipsRegisterBankInfo &RBI) {
+  return new MipsInstructionSelector(TM, Subtarget, RBI);
+}
+} // end namespace llvm