1 files changed, 61 insertions, 0 deletions
diff --git a/llvm/lib/Target/Nios2/Nios2Subtarget.cpp b/llvm/lib/Target/Nios2/Nios2Subtarget.cpp
new file mode 100644
index 00000000000..6176d37fea0
--- /dev/null
+++ b/llvm/lib/Target/Nios2/Nios2Subtarget.cpp
@@ -0,0 +1,61 @@
+//===-- Nios2Subtarget.cpp - Nios2 Subtarget Information ------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Nios2 specific subclass of TargetSubtargetInfo.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Nios2Subtarget.h"
+
+#include "Nios2.h"
+#include "Nios2RegisterInfo.h"
+#include "Nios2TargetMachine.h"
+
+using namespace llvm;
+
+#define DEBUG_TYPE "nios2-subtarget"
+
+#define GET_SUBTARGETINFO_TARGET_DESC
+#define GET_SUBTARGETINFO_CTOR
+#include "Nios2GenSubtargetInfo.inc"
+
+void Nios2Subtarget::anchor() {}
+
+Nios2Subtarget::Nios2Subtarget(const Triple &TT, const std::string &CPU,
+                               const std::string &FS,
+                               const Nios2TargetMachine &_TM)
+    :
+
+      // Nios2GenSubtargetInfo will display features by llc -march=nios2
+      // -mcpu=help
+      Nios2GenSubtargetInfo(TT, CPU, FS), TM(_TM), TargetTriple(TT),
+      InstrInfo(Nios2InstrInfo::create(
+          initializeSubtargetDependencies(CPU, FS, TM))) {}
+
+Nios2Subtarget &
+Nios2Subtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS,
+                                                const TargetMachine &TM) {
+  if (TargetTriple.getArch() == Triple::nios2) {
+    if (CPU != "nios2r2") {
+      CPU = "nios2r1";
+      Nios2ArchVersion = Nios2r1;
+    } else {
+      Nios2ArchVersion = Nios2r2;
+    }
+  } else {
+    errs() << "!!!Error, TargetTriple.getArch() = " << TargetTriple.getArch()
+           << "CPU = " << CPU << "\n";
+    exit(0);
+  }
+
+  // Parse features string.
+  ParseSubtargetFeatures(CPU, FS);
+
+  return *this;
+}