First patch for Mips subzero compiler

src/assembler_mips32.h

-//===- subzero/src/assembler_arm32.h - Assembler for ARM32 ------*- C++ -*-===//
+//===- subzero/src/assembler_mips.h - Assembler for MIPS --------*- C++ -*-===//
 //
 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Modified by the Subzero authors.
 //
 //===----------------------------------------------------------------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
-// This file implements the Assembler class for ARM32.
+// This file implements the Assembler class for MIPS32.
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef SUBZERO_SRC_ASSEMBLER_ARM32_H
-#define SUBZERO_SRC_ASSEMBLER_ARM32_H
+#ifndef SUBZERO_SRC_ASSEMBLER_MIPS32_H
+#define SUBZERO_SRC_ASSEMBLER_MIPS32_H
 
 #include "IceDefs.h"
 #include "IceFixups.h"
 
 #include "assembler.h"
 
 namespace Ice {
-namespace ARM32 {
+namespace MIPS32 {
 
-class AssemblerARM32 : public Assembler {
-  AssemblerARM32(const AssemblerARM32 &) = delete;
-  AssemblerARM32 &operator=(const AssemblerARM32 &) = delete;
+class AssemblerMIPS32 : public Assembler {
+  AssemblerMIPS32(const AssemblerMIPS32 &) = delete;
+  AssemblerMIPS32 &operator=(const AssemblerMIPS32 &) = delete;
 
 public:
-  explicit AssemblerARM32(bool use_far_branches = false) : Assembler() {
-    // This mode is only needed and implemented for MIPS and ARM.
+  explicit AssemblerMIPS32(bool use_far_branches = false) : Assembler() {
+    // This mode is only needed and implemented for MIPS32 and ARM.
     assert(!use_far_branches);
     (void)use_far_branches;
   }
-  ~AssemblerARM32() override = default;
+  ~AssemblerMIPS32() override = default;
 
-  void alignFunction() override { llvm_unreachable("Not yet implemented."); }
+  void alignFunction() override {
+    llvm::report_fatal_error("Not yet implemented.");
+  }
 
   SizeT getBundleAlignLog2Bytes() const override { return 4; }
 
-  const char *getNonExecPadDirective() const override { return ".p2alignl"; }
+  const char *getNonExecPadDirective() const override { return ".TBD"; }
 
   llvm::ArrayRef<uint8_t> getNonExecBundlePadding() const override {
-    // Use a particular UDF encoding -- TRAPNaCl in LLVM: 0xE7FEDEF0
-    // http://llvm.org/viewvc/llvm-project?view=revision&revision=173943
-    static const uint8_t Padding[] = {0xE7, 0xFE, 0xDE, 0xF0};
-    return llvm::ArrayRef<uint8_t>(Padding, 4);
+    llvm::report_fatal_error("Not yet implemented.");
   }
 
   void padWithNop(intptr_t Padding) override {
     (void)Padding;
-    llvm_unreachable("Not yet implemented.");
+    llvm::report_fatal_error("Not yet implemented.");
   }
 
   void BindCfgNodeLabel(SizeT NodeNumber) override {
     (void)NodeNumber;
-    llvm_unreachable("Not yet implemented.");
+    llvm::report_fatal_error("Not yet implemented.");
   }
 
   bool fixupIsPCRel(FixupKind Kind) const override {
     (void)Kind;
-    llvm_unreachable("Not yet implemented.");
+    llvm::report_fatal_error("Not yet implemented.");
   }
 };
 
-} // end of namespace ARM32
+} // end of namespace MIPS32
 } // end of namespace Ice
 
-#endif // SUBZERO_SRC_ASSEMBLER_ARM32_H
+#endif // SUBZERO_SRC_ASSEMBLER_MIPS32_H