[Nios2] Remove Nios2 backend

As mentioned here http://lists.llvm.org/pipermail/llvm-dev/2019-January/129121.html This backend is incomplete and has not been maintained in several months.

Differential Revision: https://reviews.llvm.org/D56691

llvm-svn: 351231

1 files changed, 0 insertions, 56 deletions

diff --git a/llvm/lib/Target/Nios2/Nios2Subtarget.cpp b/llvm/lib/Target/Nios2/Nios2Subtarget.cpp
deleted file mode 100644
index 196bed20cdc..00000000000
--- a/llvm/lib/Target/Nios2/Nios2Subtarget.cpp
+++ /dev/null
@@ -1,56 +0,0 @@
-//===-- 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"
-
-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 TargetMachine &TM)
-    :
-
-      // Nios2GenSubtargetInfo will display features by llc -march=nios2
-      // -mcpu=help
-      Nios2GenSubtargetInfo(TT, CPU, FS), TargetTriple(TT),
-      InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this),
-      FrameLowering(*this) {}
-
-Nios2Subtarget &Nios2Subtarget::initializeSubtargetDependencies(StringRef CPU,
-                                                                StringRef FS) {
-  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;
-}