MIPS disassembler support.

Patch by Vladimir Medic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153924 91177308-0d34-0410-b5e6-96231b3b80d8

21 files changed, 2967 insertions, 104 deletions

diff --git a/lib/Target/Mips/CMakeLists.txt b/lib/Target/Mips/CMakeLists.txt
index 13d17e4..0500c5d 100644
--- a/lib/Target/Mips/CMakeLists.txt
+++ b/lib/Target/Mips/CMakeLists.txt
@@ -2,12 +2,14 @@ set(LLVM_TARGET_DEFINITIONS Mips.td)
 
 tablegen(LLVM MipsGenRegisterInfo.inc -gen-register-info)
 tablegen(LLVM MipsGenInstrInfo.inc -gen-instr-info)
+tablegen(LLVM MipsGenDisassemblerTables.inc -gen-disassembler)
 tablegen(LLVM MipsGenCodeEmitter.inc -gen-emitter)
 tablegen(LLVM MipsGenMCCodeEmitter.inc -gen-emitter -mc-emitter)
 tablegen(LLVM MipsGenAsmWriter.inc -gen-asm-writer)
 tablegen(LLVM MipsGenDAGISel.inc -gen-dag-isel)
 tablegen(LLVM MipsGenCallingConv.inc -gen-callingconv)
 tablegen(LLVM MipsGenSubtargetInfo.inc -gen-subtarget)
+tablegen(LLVM MipsGenEDInfo.inc -gen-enhanced-disassembly-info)
 add_public_tablegen_target(MipsCommonTableGen)
 
 add_llvm_target(MipsCodeGen
@@ -32,6 +34,7 @@ add_llvm_target(MipsCodeGen
   )
 
 add_subdirectory(InstPrinter)
+add_subdirectory(Disassembler)
 add_subdirectory(TargetInfo)
 add_subdirectory(MCTargetDesc)
 add_subdirectory(AsmParser)
diff --git a/lib/Target/Mips/Disassembler/CMakeLists.txt b/lib/Target/Mips/Disassembler/CMakeLists.txt
new file mode 100644
index 0000000..4b2f6be
--- /dev/null
+++ b/lib/Target/Mips/Disassembler/CMakeLists.txt
@@ -0,0 +1,30 @@
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
+
+add_llvm_library(LLVMMipsDisassembler
+  MipsDisassembler.cpp
+  )
+
+# workaround for hanging compilation on MSVC9 and 10
+if( MSVC_VERSION EQUAL 1400 OR MSVC_VERSION EQUAL 1500 OR MSVC_VERSION EQUAL 1600 )
+set_property(
+  SOURCE MipsDisassembler.cpp
+  PROPERTY COMPILE_FLAGS "/Od"
+  )
+endif()
+
+add_dependencies(LLVMMipsDisassembler MipsCommonTableGen)
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
+
+add_llvm_library(LLVMMipsDisassembler
+  MipsDisassembler.cpp
+  )
+
+# workaround for hanging compilation on MSVC9 and 10
+if( MSVC_VERSION EQUAL 1400 OR MSVC_VERSION EQUAL 1500 OR MSVC_VERSION EQUAL 1600 )
+set_property(
+  SOURCE MipsDisassembler.cpp
+  PROPERTY COMPILE_FLAGS "/Od"
+  )
+endif()
+
+add_dependencies(LLVMMipsDisassembler MipsCommonTableGen)
diff --git a/lib/Target/Mips/Disassembler/LLVMBuild.txt b/lib/Target/Mips/Disassembler/LLVMBuild.txt
new file mode 100644
index 0000000..5c0ee0d
--- /dev/null
+++ b/lib/Target/Mips/Disassembler/LLVMBuild.txt
@@ -0,0 +1,46 @@
+;===- ./lib/Target/Mips/Disassembler/LLVMBuild.txt --------------*- Conf -*--===;
+;
+;                     The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+;   http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+[component_0]
+type = Library
+name = MipsDisassembler
+parent = Mips
+required_libraries = MC Support MipsInfo
+add_to_library_groups = Mips
+;===- ./lib/Target/Mips/Disassembler/LLVMBuild.txt --------------*- Conf -*--===;
+;
+;                     The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+;   http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+[component_0]
+type = Library
+name = MipsDisassembler
+parent = Mips
+required_libraries = MC Support MipsInfo
+add_to_library_groups = Mips
diff --git a/lib/Target/Mips/Disassembler/Makefile b/lib/Target/Mips/Disassembler/Makefile
new file mode 100644
index 0000000..5a9459c
--- /dev/null
+++ b/lib/Target/Mips/Disassembler/Makefile
@@ -0,0 +1,32 @@
+##===- lib/Target/Mips/Disassembler/Makefile ----------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../../../..
+LIBRARYNAME = LLVMMipsDisassembler
+
+# Hack: we need to include 'main' Mips target directory to grab private headers
+CPP.Flags += -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common
+##===- lib/Target/Mips/Disassembler/Makefile ----------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../../../..
+LIBRARYNAME = LLVMMipsDisassembler
+
+# Hack: we need to include 'main' Mips target directory to grab private headers
+CPP.Flags += -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common
diff --git a/lib/Target/Mips/Disassembler/MipsDisassembler.cpp b/lib/Target/Mips/Disassembler/MipsDisassembler.cpp
new file mode 100644
index 0000000..78dbc06
--- /dev/null
+++ b/lib/Target/Mips/Disassembler/MipsDisassembler.cpp
@@ -0,0 +1,552 @@
+//===- MipsDisassembler.cpp - Disassembler for Mips -------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is part of the Mips Disassembler.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Mips.h"
+#include "MipsSubtarget.h"
+#include "llvm/MC/EDInstInfo.h"
+#include "llvm/MC/MCDisassembler.h"
+#include "llvm/Support/MemoryObject.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/Support/MathExtras.h"
+
+
+#include "MipsGenEDInfo.inc"
+
+using namespace llvm;
+
+typedef MCDisassembler::DecodeStatus DecodeStatus;
+
+/// MipsDisassembler - a disasembler class for Mips32.
+class MipsDisassembler : public MCDisassembler {
+public:
+  /// Constructor     - Initializes the disassembler.
+  ///
+  MipsDisassembler(const MCSubtargetInfo &STI, bool bigEndian) :
+    MCDisassembler(STI), isBigEndian(bigEndian) {
+  }
+
+  ~MipsDisassembler() {
+  }
+
+  /// getInstruction - See MCDisassembler.
+  DecodeStatus getInstruction(MCInst &instr,
+                              uint64_t &size,
+                              const MemoryObject &region,
+                              uint64_t address,
+                              raw_ostream &vStream,
+                              raw_ostream &cStream) const;
+
+  /// getEDInfo - See MCDisassembler.
+  const EDInstInfo *getEDInfo() const;
+
+private:
+  bool isBigEndian;
+};
+
+
+/// Mips64Disassembler - a disasembler class for Mips64.
+class Mips64Disassembler : public MCDisassembler {
+public:
+  /// Constructor     - Initializes the disassembler.
+  ///
+  Mips64Disassembler(const MCSubtargetInfo &STI, bool bigEndian) :
+    MCDisassembler(STI), isBigEndian(bigEndian) {
+  }
+
+  ~Mips64Disassembler() {
+  }
+
+  /// getInstruction - See MCDisassembler.
+  DecodeStatus getInstruction(MCInst &instr,
+                              uint64_t &size,
+                              const MemoryObject &region,
+                              uint64_t address,
+                              raw_ostream &vStream,
+                              raw_ostream &cStream) const;
+
+  /// getEDInfo - See MCDisassembler.
+  const EDInstInfo *getEDInfo() const;
+
+private:
+  bool isBigEndian;
+};
+
+const EDInstInfo *MipsDisassembler::getEDInfo() const {
+  return instInfoMips;
+}
+
+const EDInstInfo *Mips64Disassembler::getEDInfo() const {
+  return instInfoMips;
+}
+
+// Decoder tables for Mips register
+static const unsigned CPURegsTable[] = {
+  Mips::ZERO, Mips::AT, Mips::V0, Mips::V1,
+  Mips::A0, Mips::A1, Mips::A2, Mips::A3,
+  Mips::T0, Mips::T1, Mips::T2, Mips::T3,
+  Mips::T4, Mips::T5, Mips::T6, Mips::T7,
+  Mips::S0, Mips::S1, Mips::S2, Mips::S3,
+  Mips::S4, Mips::S5, Mips::S6, Mips::S7,
+  Mips::T8, Mips::T9, Mips::K0, Mips::K1,
+  Mips::GP, Mips::SP, Mips::FP, Mips::RA
+};
+
+static const unsigned FGR32RegsTable[] = {
+  Mips::F0, Mips::F1, Mips::F2, Mips::F3,
+  Mips::F4, Mips::F5, Mips::F6, Mips::F7,
+  Mips::F8, Mips::F9, Mips::F10, Mips::F11,
+  Mips::F12, Mips::F13, Mips::F14, Mips::F15,
+  Mips::F16, Mips::F17, Mips::F18, Mips::F18,
+  Mips::F20, Mips::F21, Mips::F22, Mips::F23,
+  Mips::F24, Mips::F25, Mips::F26, Mips::F27,
+  Mips::F28, Mips::F29, Mips::F30, Mips::F31
+};
+
+static const unsigned CPU64RegsTable[] = {
+  Mips::ZERO_64, Mips::AT_64, Mips::V0_64, Mips::V1_64,
+  Mips::A0_64, Mips::A1_64, Mips::A2_64, Mips::A3_64,
+  Mips::T0_64, Mips::T1_64, Mips::T2_64, Mips::T3_64,
+  Mips::T4_64, Mips::T5_64, Mips::T6_64, Mips::T7_64,
+  Mips::S0_64, Mips::S1_64, Mips::S2_64, Mips::S3_64,
+  Mips::S4_64, Mips::S5_64, Mips::S6_64, Mips::S7_64,
+  Mips::T8_64, Mips::T9_64, Mips::K0_64, Mips::K1_64,
+  Mips::GP_64, Mips::SP_64, Mips::FP_64, Mips::RA_64
+};
+
+static const unsigned FGR64RegsTable[] = {
+  Mips::D0_64,  Mips::D1_64,  Mips::D2_64,  Mips::D3_64,
+  Mips::D4_64,  Mips::D5_64,  Mips::D6_64,  Mips::D7_64,
+  Mips::D8_64,  Mips::D9_64,  Mips::D10_64, Mips::D11_64,
+  Mips::D12_64, Mips::D13_64, Mips::D14_64, Mips::D15_64,
+  Mips::D16_64, Mips::D17_64, Mips::D18_64, Mips::D19_64,
+  Mips::D20_64, Mips::D21_64, Mips::D22_64, Mips::D23_64,
+  Mips::D24_64, Mips::D25_64, Mips::D26_64, Mips::D27_64,
+  Mips::D28_64, Mips::D29_64, Mips::D30_64, Mips::D31_64
+};
+
+static const unsigned AFGR64RegsTable[] = {
+  Mips::D0,  Mips::D1,  Mips::D2,  Mips::D3,
+  Mips::D4,  Mips::D5,  Mips::D6,  Mips::D7,
+  Mips::D8,  Mips::D9,  Mips::D10, Mips::D11,
+  Mips::D12, Mips::D13, Mips::D14, Mips::D15
+};
+
+// Forward declare these because the autogenerated code will reference them.
+// Definitions are further down.
+static DecodeStatus DecodeCPU64RegsRegisterClass(MCInst &Inst,
+                                                 unsigned RegNo,
+                                                 uint64_t Address,
+                                                 const void *Decoder);
+
+static DecodeStatus DecodeCPURegsRegisterClass(MCInst &Inst,
+                                               unsigned RegNo,
+                                               uint64_t Address,
+                                               const void *Decoder);
+
+static DecodeStatus DecodeFGR64RegisterClass(MCInst &Inst,
+                                             unsigned RegNo,
+                                             uint64_t Address,
+                                             const void *Decoder);
+
+static DecodeStatus DecodeFGR32RegisterClass(MCInst &Inst,
+                                             unsigned RegNo,
+                                             uint64_t Address,
+                                             const void *Decoder);
+
+static DecodeStatus DecodeCCRRegisterClass(MCInst &Inst,
+                                           unsigned RegNo,
+                                           uint64_t Address,
+                                           const void *Decoder);
+
+static DecodeStatus DecodeHWRegsRegisterClass(MCInst &Inst,
+                                              unsigned Insn,
+                                              uint64_t Address,
+                                              const void *Decoder);
+
+static DecodeStatus DecodeAFGR64RegisterClass(MCInst &Inst,
+                                              unsigned RegNo,
+                                              uint64_t Address,
+                                              const void *Decoder);
+
+static DecodeStatus DecodeHWRegs64RegisterClass(MCInst &Inst,
+                                                unsigned Insn,
+                                                uint64_t Address,
+                                                const void *Decoder);
+
+static DecodeStatus DecodeBranchTarget(MCInst &Inst,
+                                       unsigned Offset,
+                                       uint64_t Address,
+                                       const void *Decoder);
+
+static DecodeStatus DecodeBC1(MCInst &Inst,
+                              unsigned Insn,
+                              uint64_t Address,
+                              const void *Decoder);
+
+
+static DecodeStatus DecodeJumpTarget(MCInst &Inst,
+                                     unsigned Insn,
+                                     uint64_t Address,
+                                     const void *Decoder);
+
+static DecodeStatus DecodeMem(MCInst &Inst,
+                              unsigned Insn,
+                              uint64_t Address,
+                              const void *Decoder);
+
+static DecodeStatus DecodeFMem(MCInst &Inst, unsigned Insn,
+                               uint64_t Address,
+                               const void *Decoder);
+
+static DecodeStatus DecodeSimm16(MCInst &Inst,
+                                 unsigned Insn,
+                                 uint64_t Address,
+                                 const void *Decoder);
+
+static DecodeStatus DecodeCondCode(MCInst &Inst,
+                                   unsigned Insn,
+                                   uint64_t Address,
+                                   const void *Decoder);
+
+static DecodeStatus DecodeInsSize(MCInst &Inst,
+                                  unsigned Insn,
+                                  uint64_t Address,
+                                  const void *Decoder);
+
+static DecodeStatus DecodeExtSize(MCInst &Inst,
+                                  unsigned Insn,
+                                  uint64_t Address,
+                                  const void *Decoder);
+
+namespace llvm {
+extern Target TheMipselTarget, TheMipsTarget, TheMips64Target,
+              TheMips64elTarget;
+}
+
+static MCDisassembler *createMipsDisassembler(
+                       const Target &T,
+                       const MCSubtargetInfo &STI) {
+  return new MipsDisassembler(STI,true);
+}
+
+static MCDisassembler *createMipselDisassembler(
+                       const Target &T,
+                       const MCSubtargetInfo &STI) {
+  return new MipsDisassembler(STI,false);
+}
+
+static MCDisassembler *createMips64Disassembler(
+                       const Target &T,
+                       const MCSubtargetInfo &STI) {
+  return new Mips64Disassembler(STI,true);
+}
+
+static MCDisassembler *createMips64elDisassembler(
+                       const Target &T,
+                       const MCSubtargetInfo &STI) {
+  return new Mips64Disassembler(STI, false);
+}
+
+extern "C" void LLVMInitializeMipsDisassembler() {
+  // Register the disassembler.
+  TargetRegistry::RegisterMCDisassembler(TheMipsTarget,
+                                         createMipsDisassembler);
+  TargetRegistry::RegisterMCDisassembler(TheMipselTarget,
+                                         createMipselDisassembler);
+  TargetRegistry::RegisterMCDisassembler(TheMips64Target,
+                                         createMips64Disassembler);
+  TargetRegistry::RegisterMCDisassembler(TheMips64elTarget,
+                                         createMips64elDisassembler);
+}
+
+
+#include "MipsGenDisassemblerTables.inc"
+
+  /// readInstruction - read four bytes from the MemoryObject
+  /// and return 32 bit word sorted according to the given endianess
+static DecodeStatus readInstruction32(const MemoryObject &region,
+                                      uint64_t address,
+                                      uint64_t &size,
+                                      uint32_t &insn,
+                                      bool isBigEndian) {
+  uint8_t Bytes[4];
+
+  // We want to read exactly 4 Bytes of data.
+  if (region.readBytes(address, 4, (uint8_t*)Bytes, NULL) == -1) {
+    size = 0;
+    return MCDisassembler::Fail;
+  }
+
+  if (isBigEndian) {
+    // Encoded as a big-endian 32-bit word in the stream.
+    insn = (Bytes[3] <<  0) |
+           (Bytes[2] <<  8) |
+           (Bytes[1] << 16) |
+           (Bytes[0] << 24);
+  }
+  else {
+    // Encoded as a small-endian 32-bit word in the stream.
+    insn = (Bytes[0] <<  0) |
+           (Bytes[1] <<  8) |
+           (Bytes[2] << 16) |
+           (Bytes[3] << 24);
+  }
+
+  return MCDisassembler::Success;
+}
+
+DecodeStatus
+MipsDisassembler::getInstruction(MCInst &instr,
+                                 uint64_t &Size,
+                                 const MemoryObject &Region,
+                                 uint64_t Address,
+                                 raw_ostream &vStream,
+                                 raw_ostream &cStream) const {
+  uint32_t Insn;
+
+  DecodeStatus Result = readInstruction32(Region, Address, Size,
+                                          Insn, isBigEndian);
+  if (Result == MCDisassembler::Fail)
+    return MCDisassembler::Fail;
+
+  // Calling the auto-generated decoder function.
+  Result = decodeMipsInstruction32(instr, Insn, Address, this, STI);
+  if (Result != MCDisassembler::Fail) {
+    Size = 4;
+    return Result;
+  }
+
+  return MCDisassembler::Fail;
+}
+
+DecodeStatus
+Mips64Disassembler::getInstruction(MCInst &instr,
+                                   uint64_t &Size,
+                                   const MemoryObject &Region,
+                                   uint64_t Address,
+                                   raw_ostream &vStream,
+                                   raw_ostream &cStream) const {
+  uint32_t Insn;
+
+  DecodeStatus Result = readInstruction32(Region, Address, Size,
+                                          Insn, isBigEndian);
+  if (Result == MCDisassembler::Fail)
+    return MCDisassembler::Fail;
+
+  // Calling the auto-generated decoder function.
+  Result = decodeMips64Instruction32(instr, Insn, Address, this, STI);
+  if (Result != MCDisassembler::Fail) {
+    Size = 4;
+    return Result;
+  }
+  // If we fail to decode in Mips64 decoder space we can try in Mips32
+  Result = decodeMipsInstruction32(instr, Insn, Address, this, STI);
+  if (Result != MCDisassembler::Fail) {
+    Size = 4;
+    return Result;
+  }
+
+  return MCDisassembler::Fail;
+}
+
+static DecodeStatus DecodeCPU64RegsRegisterClass(MCInst &Inst,
+                                                 unsigned RegNo,
+                                                 uint64_t Address,
+                                                 const void *Decoder) {
+
+  if (RegNo > 31)
+    return MCDisassembler::Fail;
+
+  Inst.addOperand(MCOperand::CreateReg(CPU64RegsTable[RegNo]));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeCPURegsRegisterClass(MCInst &Inst,
+                                               unsigned RegNo,
+                                               uint64_t Address,
+                                               const void *Decoder) {
+  if (RegNo > 31)
+    return MCDisassembler::Fail;
+
+  Inst.addOperand(MCOperand::CreateReg(CPURegsTable[RegNo]));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeFGR64RegisterClass(MCInst &Inst,
+                                             unsigned RegNo,
+                                             uint64_t Address,
+                                             const void *Decoder) {
+  if (RegNo > 31)
+    return MCDisassembler::Fail;
+
+  Inst.addOperand(MCOperand::CreateReg(FGR64RegsTable[RegNo]));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeFGR32RegisterClass(MCInst &Inst,
+                                             unsigned RegNo,
+                                             uint64_t Address,
+                                             const void *Decoder) {
+  if (RegNo > 31)
+    return MCDisassembler::Fail;
+
+  Inst.addOperand(MCOperand::CreateReg(FGR32RegsTable[RegNo]));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeCCRRegisterClass(MCInst &Inst,
+                                           unsigned RegNo,
+                                           uint64_t Address,
+                                           const void *Decoder) {
+  Inst.addOperand(MCOperand::CreateReg(RegNo));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeMem(MCInst &Inst,
+                              unsigned Insn,
+                              uint64_t Address,
+                              const void *Decoder) {
+  int Offset = SignExtend32<16>(Insn & 0xffff);
+  int Reg = (int)fieldFromInstruction32(Insn, 16, 5);
+  int Base = (int)fieldFromInstruction32(Insn, 21, 5);
+
+  if(Inst.getOpcode() == Mips::SC){
+    Inst.addOperand(MCOperand::CreateReg(CPURegsTable[Reg]));
+  }
+
+  Inst.addOperand(MCOperand::CreateReg(CPURegsTable[Reg]));
+  Inst.addOperand(MCOperand::CreateReg(CPURegsTable[Base]));
+  Inst.addOperand(MCOperand::CreateImm(Offset));
+
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeFMem(MCInst &Inst,
+                               unsigned Insn,
+                               uint64_t Address,
+                               const void *Decoder) {
+  int Offset = SignExtend32<16>(Insn & 0xffff);
+  int Reg = (int)fieldFromInstruction32(Insn, 16, 5);
+  int Base = (int)fieldFromInstruction32(Insn, 21, 5);
+
+  Inst.addOperand(MCOperand::CreateReg(FGR64RegsTable[Reg]));
+  Inst.addOperand(MCOperand::CreateReg(CPURegsTable[Base]));
+  Inst.addOperand(MCOperand::CreateImm(Offset));
+
+  return MCDisassembler::Success;
+}
+
+
+static DecodeStatus DecodeHWRegsRegisterClass(MCInst &Inst,
+                                              unsigned RegNo,
+                                              uint64_t Address,
+                                              const void *Decoder) {
+  // Currently only hardware register 29 is supported.
+  if (RegNo != 29)
+    return  MCDisassembler::Fail;
+  Inst.addOperand(MCOperand::CreateReg(Mips::HWR29));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeCondCode(MCInst &Inst,
+                                   unsigned Insn,
+                                   uint64_t Address,
+                                   const void *Decoder) {
+  int CondCode = Insn & 0xf;
+  Inst.addOperand(MCOperand::CreateImm(CondCode));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeAFGR64RegisterClass(MCInst &Inst,
+                                              unsigned RegNo,
+                                              uint64_t Address,
+                                              const void *Decoder) {
+  if (RegNo > 31)
+    return MCDisassembler::Fail;
+
+  Inst.addOperand(MCOperand::CreateReg(AFGR64RegsTable[RegNo]));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeHWRegs64RegisterClass(MCInst &Inst,
+                                                unsigned RegNo,
+                                                uint64_t Address,
+                                                const void *Decoder) {
+  //Currently only hardware register 29 is supported
+  if (RegNo != 29)
+    return  MCDisassembler::Fail;
+  Inst.addOperand(MCOperand::CreateReg(Mips::HWR29));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeBranchTarget(MCInst &Inst,
+                                       unsigned Offset,
+                                       uint64_t Address,
+                                       const void *Decoder) {
+  unsigned BranchOffset = Offset & 0xffff;
+  BranchOffset = SignExtend32<18>(BranchOffset << 2) + 4;
+  Inst.addOperand(MCOperand::CreateImm(BranchOffset));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeBC1(MCInst &Inst,
+                              unsigned Insn,
+                              uint64_t Address,
+                              const void *Decoder) {
+  unsigned BranchOffset = Insn & 0xffff;
+  BranchOffset = SignExtend32<18>(BranchOffset << 2) + 4;
+  Inst.addOperand(MCOperand::CreateImm(BranchOffset));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeJumpTarget(MCInst &Inst,
+                                     unsigned Insn,
+                                     uint64_t Address,
+                                     const void *Decoder) {
+
+  unsigned JumpOffset = fieldFromInstruction32(Insn, 0, 26) << 2;
+  Inst.addOperand(MCOperand::CreateImm(JumpOffset));
+  return MCDisassembler::Success;
+}
+
+
+static DecodeStatus DecodeSimm16(MCInst &Inst,
+                                 unsigned Insn,
+                                 uint64_t Address,
+                                 const void *Decoder) {
+  Inst.addOperand(MCOperand::CreateImm(SignExtend32<16>(Insn)));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeInsSize(MCInst &Inst,
+                                  unsigned Insn,
+                                  uint64_t Address,
+                                  const void *Decoder) {
+  // First we need to grab the pos(lsb) from MCInst.
+  int Pos = Inst.getOperand(2).getImm();
+  int Size = (int) Insn - Pos + 1;
+  Inst.addOperand(MCOperand::CreateImm(SignExtend32<16>(Size)));
+  return MCDisassembler::Success;
+}
+
+static DecodeStatus DecodeExtSize(MCInst &Inst,
+                                  unsigned Insn,
+                                  uint64_t Address,
+                                  const void *Decoder) {
+  int Size = (int) Insn  + 1;
+  Inst.addOperand(MCOperand::CreateImm(SignExtend32<16>(Size)));
+  return MCDisassembler::Success;
+}
diff --git a/lib/Target/Mips/LLVMBuild.txt b/lib/Target/Mips/LLVMBuild.txt
index abbed8c..a95d6bc 100644
--- a/lib/Target/Mips/LLVMBuild.txt
+++ b/lib/Target/Mips/LLVMBuild.txt
@@ -16,7 +16,7 @@
 ;===------------------------------------------------------------------------===;
 
 [common]
-subdirectories = AsmParser InstPrinter MCTargetDesc TargetInfo
+subdirectories = AsmParser Disassembler InstPrinter MCTargetDesc TargetInfo
 
 [component_0]
 type = TargetGroup
@@ -24,6 +24,7 @@ name = Mips
 parent = Target
 has_asmparser = 1
 has_asmprinter = 1
+has_disassembler = 1
 has_jit = 1
 
 [component_1]
diff --git a/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp b/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp
index 3c544f6..f634f08 100644
--- a/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp
+++ b/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp
@@ -34,6 +34,38 @@
 
 using namespace llvm;
 
+static std::string ParseMipsTriple(StringRef TT, StringRef CPU) {
+  std::string MipsArchFeature;
+  size_t DashPosition = 0;
+  StringRef TheTriple;
+
+  // Let's see if there is a dash, like mips-unknown-linux.
+  DashPosition = TT.find('-');
+
+  if (DashPosition == StringRef::npos) {
+    // No dash, we check the string size.
+    TheTriple = TT.substr(0);
+  } else {
+    // We are only interested in substring before dash.
+    TheTriple = TT.substr(0,DashPosition);
+  }
+
+  if (TheTriple == "mips" || TheTriple == "mipsel") {
+    if (CPU.empty() || CPU == "mips32") {
+      MipsArchFeature = "+mips32";
+    } else if (CPU == "mips32r2") {
+      MipsArchFeature = "+mips32r2";
+    }
+  } else {
+      if (CPU.empty() || CPU == "mips64") {
+        MipsArchFeature = "+mips64";
+      } else if (CPU == "mips64r2") {
+        MipsArchFeature = "+mips64r2";
+      }
+  }
+  return MipsArchFeature;
+}
+
 static MCInstrInfo *createMipsMCInstrInfo() {
   MCInstrInfo *X = new MCInstrInfo();
   InitMipsMCInstrInfo(X);
@@ -48,8 +80,15 @@ static MCRegisterInfo *createMipsMCRegisterInfo(StringRef TT) {
 
 static MCSubtargetInfo *createMipsMCSubtargetInfo(StringRef TT, StringRef CPU,
                                                   StringRef FS) {
+  std::string ArchFS = ParseMipsTriple(TT,CPU);
+  if (!FS.empty()) {
+    if (!ArchFS.empty())
+      ArchFS = ArchFS + "," + FS.str();
+    else
+      ArchFS = FS;
+  }
   MCSubtargetInfo *X = new MCSubtargetInfo();
-  InitMipsMCSubtargetInfo(X, TT, CPU, FS);
+  InitMipsMCSubtargetInfo(X, TT, CPU, ArchFS);
   return X;
 }
 
diff --git a/lib/Target/Mips/Makefile b/lib/Target/Mips/Makefile
index 168635c..596f071 100644
--- a/lib/Target/Mips/Makefile
+++ b/lib/Target/Mips/Makefile
@@ -15,9 +15,9 @@ TARGET = Mips
 BUILT_SOURCES = MipsGenRegisterInfo.inc MipsGenInstrInfo.inc \
                 MipsGenAsmWriter.inc MipsGenCodeEmitter.inc \
                 MipsGenDAGISel.inc MipsGenCallingConv.inc \
-                MipsGenSubtargetInfo.inc MipsGenMCCodeEmitter.inc
-
-DIRS = InstPrinter AsmParser TargetInfo MCTargetDesc
+                MipsGenSubtargetInfo.inc MipsGenMCCodeEmitter.inc \
+                MipsGenEDInfo.inc MipsGenDisassemblerTables.inc
+DIRS = InstPrinter Disassembler AsmParser TargetInfo MCTargetDesc
 
 include $(LEVEL)/Makefile.common
 
diff --git a/lib/Target/Mips/Mips64InstrInfo.td b/lib/Target/Mips/Mips64InstrInfo.td
index 427e8d9..c31ff0b 100644
--- a/lib/Target/Mips/Mips64InstrInfo.td
+++ b/lib/Target/Mips/Mips64InstrInfo.td
@@ -36,6 +36,7 @@ def immZExt6 : ImmLeaf<i32, [{return Imm == (Imm & 0x3f);}]>;
 //===----------------------------------------------------------------------===//
 // Shifts
 // 64-bit shift instructions.
+let DecoderNamespace = "Mips64" in {
 class shift_rotate_imm64<bits<6> func, bits<5> isRotate, string instr_asm,
                          SDNode OpNode>:
   shift_rotate_imm<func, isRotate, instr_asm, OpNode, immZExt6, shamt,
@@ -49,16 +50,21 @@ class Div64<SDNode op, bits<6> func, string instr_asm, InstrItinClass itin>:
 
 multiclass Atomic2Ops64<PatFrag Op, string Opstr> {
   def #NAME# : Atomic2Ops<Op, Opstr, CPU64Regs, CPURegs>, Requires<[NotN64]>;
-  def _P8    : Atomic2Ops<Op, Opstr, CPU64Regs, CPU64Regs>, Requires<[IsN64]>;
+  def _P8    : Atomic2Ops<Op, Opstr, CPU64Regs, CPU64Regs>, Requires<[IsN64]> {
+    let isCodeGenOnly = 1;
+  }
 }
 
 multiclass AtomicCmpSwap64<PatFrag Op, string Width>  {
   def #NAME# : AtomicCmpSwap<Op, Width, CPU64Regs, CPURegs>, Requires<[NotN64]>;
   def _P8    : AtomicCmpSwap<Op, Width, CPU64Regs, CPU64Regs>,
-               Requires<[IsN64]>;
+               Requires<[IsN64]> {
+    let isCodeGenOnly = 1;
+  }
 }
-
-let usesCustomInserter = 1, Predicates = [HasMips64] in {
+}
+let usesCustomInserter = 1, Predicates = [HasMips64],
+  DecoderNamespace = "Mips64" in {
   defm ATOMIC_LOAD_ADD_I64  : Atomic2Ops64<atomic_load_add_64, "load_add_64">;
   defm ATOMIC_LOAD_SUB_I64  : Atomic2Ops64<atomic_load_sub_64, "load_sub_64">;
   defm ATOMIC_LOAD_AND_I64  : Atomic2Ops64<atomic_load_and_64, "load_and_64">;
@@ -72,7 +78,7 @@ let usesCustomInserter = 1, Predicates = [HasMips64] in {
 //===----------------------------------------------------------------------===//
 // Instruction definition
 //===----------------------------------------------------------------------===//
-
+let DecoderNamespace = "Mips64" in {
 /// Arithmetic Instructions (ALU Immediate)
 def DADDiu   : ArithLogicI<0x19, "daddiu", add, simm16_64, immSExt16,
                            CPU64Regs>;
@@ -97,16 +103,17 @@ def NOR64    : LogicNOR<0x00, 0x27, "nor", CPU64Regs>;
 def DSLL     : shift_rotate_imm64<0x38, 0x00, "dsll", shl>;
 def DSRL     : shift_rotate_imm64<0x3a, 0x00, "dsrl", srl>;
 def DSRA     : shift_rotate_imm64<0x3b, 0x00, "dsra", sra>;
-def DSLLV    : shift_rotate_reg<0x24, 0x00, "dsllv", shl, CPU64Regs>;
-def DSRLV    : shift_rotate_reg<0x26, 0x00, "dsrlv", srl, CPU64Regs>;
-def DSRAV    : shift_rotate_reg<0x27, 0x00, "dsrav", sra, CPU64Regs>;
-
+def DSLLV    : shift_rotate_reg<0x14, 0x00, "dsllv", shl, CPU64Regs>;
+def DSRLV    : shift_rotate_reg<0x16, 0x00, "dsrlv", srl, CPU64Regs>;
+def DSRAV    : shift_rotate_reg<0x17, 0x00, "dsrav", sra, CPU64Regs>;
+}
 // Rotate Instructions
-let Predicates = [HasMips64r2] in {
+let Predicates = [HasMips64r2], DecoderNamespace = "Mips64" in {
   def DROTR    : shift_rotate_imm64<0x3a, 0x01, "drotr", rotr>;
   def DROTRV   : shift_rotate_reg<0x16, 0x01, "drotrv", rotr, CPU64Regs>;
 }
 
+let DecoderNamespace = "Mips64" in {
 /// Load and Store Instructions
 ///  aligned
 defm LB64    : LoadM64<0x20, "lb",  sextloadi8>;
@@ -132,9 +139,13 @@ defm USD       : StoreM64<0x3f, "usd", store_u, 1>;
 
 /// Load-linked, Store-conditional
 def LLD    : LLBase<0x34, "lld", CPU64Regs, mem>, Requires<[NotN64]>;
-def LLD_P8 : LLBase<0x34, "lld", CPU64Regs, mem64>, Requires<[IsN64]>;
+def LLD_P8 : LLBase<0x34, "lld", CPU64Regs, mem64>, Requires<[IsN64]> {
+  let isCodeGenOnly = 1;
+}
 def SCD    : SCBase<0x3c, "scd", CPU64Regs, mem>, Requires<[NotN64]>;
-def SCD_P8 : SCBase<0x3c, "scd", CPU64Regs, mem64>, Requires<[IsN64]>;
+def SCD_P8 : SCBase<0x3c, "scd", CPU64Regs, mem64>, Requires<[IsN64]> {
+  let isCodeGenOnly = 1;
+}
 
 /// Jump and Branch Instructions
 def JR64   : JumpFR<0x00, 0x08, "jr", CPU64Regs>;
@@ -142,11 +153,13 @@ def BEQ64  : CBranch<0x04, "beq", seteq, CPU64Regs>;
 def BNE64  : CBranch<0x05, "bne", setne, CPU64Regs>;
 def BGEZ64 : CBranchZero<0x01, 1, "bgez", setge, CPU64Regs>;
 def BGTZ64 : CBranchZero<0x07, 0, "bgtz", setgt, CPU64Regs>;
-def BLEZ64 : CBranchZero<0x07, 0, "blez", setle, CPU64Regs>;
+def BLEZ64 : CBranchZero<0x06, 0, "blez", setle, CPU64Regs>;
 def BLTZ64 : CBranchZero<0x01, 0, "bltz", setlt, CPU64Regs>;
-
+}
+let DecoderNamespace = "Mips64" in
 def JALR64 : JumpLinkReg<0x00, 0x09, "jalr", CPU64Regs>;
 
+let DecoderNamespace = "Mips64" in {
 /// Multiply and Divide Instructions.
 def DMULT    : Mult64<0x1c, "dmult", IIImul>;
 def DMULTu   : Mult64<0x1d, "dmultu", IIImul>;
@@ -171,11 +184,13 @@ def DSBH : SubwordSwap<0x24, 0x2, "dsbh", CPU64Regs>;
 def DSHD : SubwordSwap<0x24, 0x5, "dshd", CPU64Regs>;
 
 def LEA_ADDiu64 : EffectiveAddress<"daddiu\t$rt, $addr", CPU64Regs, mem_ea_64>;
-
-let Uses = [SP_64] in
+}
+let Uses = [SP_64], DecoderNamespace = "Mips64" in
 def DynAlloc64 : EffectiveAddress<"daddiu\t$rt, $addr", CPU64Regs, mem_ea_64>,
-                 Requires<[IsN64]>;
-
+                 Requires<[IsN64]> {
+  let isCodeGenOnly = 1;
+}
+let DecoderNamespace = "Mips64" in {
 def RDHWR64 : ReadHardware<CPU64Regs, HWRegs64>;
 
 def DEXT : ExtBase<3, "dext", CPU64Regs>;
@@ -186,9 +201,10 @@ def DSLL64_32 : FR<0x3c, 0x00, (outs CPU64Regs:$rd), (ins CPURegs:$rt),
 
 def SLL64_32 : FR<0x0, 0x00, (outs CPU64Regs:$rd), (ins CPURegs:$rt),
                   "sll\t$rd, $rt, 0", [], IIAlu>;
+let isCodeGenOnly = 1 in
 def SLL64_64 : FR<0x0, 0x00, (outs CPU64Regs:$rd), (ins CPU64Regs:$rt),
                   "sll\t$rd, $rt, 0", [], IIAlu>;
-
+}
 //===----------------------------------------------------------------------===//
 //  Arbitrary patterns that map to one or more instructions
 //===----------------------------------------------------------------------===//
diff --git a/lib/Target/Mips/MipsCondMov.td b/lib/Target/Mips/MipsCondMov.td
index 075a3e8..da33680 100644
--- a/lib/Target/Mips/MipsCondMov.td
+++ b/lib/Target/Mips/MipsCondMov.td
@@ -95,45 +95,65 @@ multiclass MovnPats<RegisterClass CRC, RegisterClass DRC, Instruction MOVNInst,
 
 // Instantiation of instructions.
 def MOVZ_I_I     : CondMovIntInt<CPURegs, CPURegs, 0x0a, "movz">;
-let Predicates = [HasMips64] in {
+let Predicates = [HasMips64],DecoderNamespace = "Mips64" in {
   def MOVZ_I_I64   : CondMovIntInt<CPURegs, CPU64Regs, 0x0a, "movz">;
-  def MOVZ_I64_I   : CondMovIntInt<CPU64Regs, CPURegs, 0x0a, "movz">;
-  def MOVZ_I64_I64 : CondMovIntInt<CPU64Regs, CPU64Regs, 0x0a, "movz">;
+  def MOVZ_I64_I   : CondMovIntInt<CPU64Regs, CPURegs, 0x0a, "movz"> {
+    let isCodeGenOnly = 1;
+  }
+  def MOVZ_I64_I64 : CondMovIntInt<CPU64Regs, CPU64Regs, 0x0a, "movz"> {
+    let isCodeGenOnly = 1;
+  }
 }
 
 def MOVN_I_I     : CondMovIntInt<CPURegs, CPURegs, 0x0b, "movn">;
-let Predicates = [HasMips64] in {
+let Predicates = [HasMips64],DecoderNamespace = "Mips64" in {
   def MOVN_I_I64   : CondMovIntInt<CPURegs, CPU64Regs, 0x0b, "movn">;
-  def MOVN_I64_I   : CondMovIntInt<CPU64Regs, CPURegs, 0x0b, "movn">;
-  def MOVN_I64_I64 : CondMovIntInt<CPU64Regs, CPU64Regs, 0x0b, "movn">;
+  def MOVN_I64_I   : CondMovIntInt<CPU64Regs, CPURegs, 0x0b, "movn"> {
+    let isCodeGenOnly = 1;
+  }
+  def MOVN_I64_I64 : CondMovIntInt<CPU64Regs, CPU64Regs, 0x0b, "movn"> {
+    let isCodeGenOnly = 1;
+  }
 }
 
 def MOVZ_I_S   : CondMovIntFP<CPURegs, FGR32, 16, 18, "movz.s">;
 def MOVZ_I64_S : CondMovIntFP<CPU64Regs, FGR32, 16, 18, "movz.s">,
-                 Requires<[HasMips64]>;
+                 Requires<[HasMips64]> {
+  let DecoderNamespace = "Mips64";
+}
 
 def MOVN_I_S   : CondMovIntFP<CPURegs, FGR32, 16, 19, "movn.s">;
 def MOVN_I64_S : CondMovIntFP<CPU64Regs, FGR32, 16, 19, "movn.s">,
-                 Requires<[HasMips64]>;
+                 Requires<[HasMips64]> {
+  let DecoderNamespace = "Mips64";
+}
 
 let Predicates = [NotFP64bit] in {
   def MOVZ_I_D32   : CondMovIntFP<CPURegs, AFGR64, 17, 18, "movz.d">;
   def MOVN_I_D32   : CondMovIntFP<CPURegs, AFGR64, 17, 19, "movn.d">;
 }
-let Predicates = [IsFP64bit] in {
+let Predicates = [IsFP64bit],DecoderNamespace = "Mips64" in {
   def MOVZ_I_D64   : CondMovIntFP<CPURegs, FGR64, 17, 18, "movz.d">;
-  def MOVZ_I64_D64 : CondMovIntFP<CPU64Regs, FGR64, 17, 18, "movz.d">;
+  def MOVZ_I64_D64 : CondMovIntFP<CPU64Regs, FGR64, 17, 18, "movz.d"> {
+    let isCodeGenOnly = 1;
+  }
   def MOVN_I_D64   : CondMovIntFP<CPURegs, FGR64, 17, 19, "movn.d">;
-  def MOVN_I64_D64 : CondMovIntFP<CPU64Regs, FGR64, 17, 19, "movn.d">;
+  def MOVN_I64_D64 : CondMovIntFP<CPU64Regs, FGR64, 17, 19, "movn.d"> {
+    let isCodeGenOnly = 1;
+  }
 }
 
 def MOVT_I   : CondMovFPInt<CPURegs, MipsCMovFP_T, 1, "movt">;
 def MOVT_I64 : CondMovFPInt<CPU64Regs, MipsCMovFP_T, 1, "movt">,
-               Requires<[HasMips64]>;
+               Requires<[HasMips64]> {
+  let DecoderNamespace = "Mips64";
+}
 
 def MOVF_I   : CondMovFPInt<CPURegs, MipsCMovFP_F, 0, "movf">;
 def MOVF_I64 : CondMovFPInt<CPU64Regs, MipsCMovFP_F, 0, "movf">,
-               Requires<[HasMips64]>;
+               Requires<[HasMips64]> {
+  let DecoderNamespace = "Mips64";
+}
 
 def MOVT_S : CondMovFPFP<FGR32, MipsCMovFP_T, 16, 1, "movt.s">;
 def MOVF_S : CondMovFPFP<FGR32, MipsCMovFP_F, 16, 0, "movf.s">;
@@ -142,7 +162,7 @@ let Predicates = [NotFP64bit] in {
   def MOVT_D32 : CondMovFPFP<AFGR64, MipsCMovFP_T, 17, 1, "movt.d">;
   def MOVF_D32 : CondMovFPFP<AFGR64, MipsCMovFP_F, 17, 0, "movf.d">;
 }
-let Predicates = [IsFP64bit] in {
+let Predicates = [IsFP64bit], DecoderNamespace = "Mips64" in {
   def MOVT_D64 : CondMovFPFP<FGR64, MipsCMovFP_T, 17, 1, "movt.d">;
   def MOVF_D64 : CondMovFPFP<FGR64, MipsCMovFP_F, 17, 0, "movf.d">;
 }
diff --git a/lib/Target/Mips/MipsInstrFPU.td b/lib/Target/Mips/MipsInstrFPU.td
index fe5eaec..4a981a7 100644
--- a/lib/Target/Mips/MipsInstrFPU.td
+++ b/lib/Target/Mips/MipsInstrFPU.td
@@ -47,17 +47,17 @@ def MipsExtractElementF64 : SDNode<"MipsISD::ExtractElementF64",
                                    SDT_MipsExtractElementF64>;
 
 // Operand for printing out a condition code.
-let PrintMethod = "printFCCOperand" in
+let PrintMethod = "printFCCOperand", DecoderMethod = "DecodeCondCode" in
   def condcode : Operand<i32>;
 
 //===----------------------------------------------------------------------===//
 // Feature predicates.
 //===----------------------------------------------------------------------===//
 
-def IsFP64bit        : Predicate<"Subtarget.isFP64bit()">;
-def NotFP64bit       : Predicate<"!Subtarget.isFP64bit()">;
-def IsSingleFloat    : Predicate<"Subtarget.isSingleFloat()">;
-def IsNotSingleFloat : Predicate<"!Subtarget.isSingleFloat()">;
+def IsFP64bit        : Predicate<"Subtarget.isFP64bit()">, AssemblerPredicate<"FeatureFP64Bit">;
+def NotFP64bit       : Predicate<"!Subtarget.isFP64bit()">, AssemblerPredicate<"!FeatureFP64Bit">;
+def IsSingleFloat    : Predicate<"Subtarget.isSingleFloat()">, AssemblerPredicate<"FeatureSingleFloat">;
+def IsNotSingleFloat : Predicate<"!Subtarget.isSingleFloat()">, AssemblerPredicate<"!FeatureSingleFloat">;
 
 // FP immediate patterns.
 def fpimm0 : PatLeaf<(fpimm), [{
@@ -83,6 +83,7 @@ def fpimm0neg : PatLeaf<(fpimm), [{
 //===----------------------------------------------------------------------===//
 
 // FP load.
+let DecoderMethod = "DecodeFMem" in {
 class FPLoad<bits<6> op, string opstr, RegisterClass RC, Operand MemOpnd>:
   FMem<op, (outs RC:$ft), (ins MemOpnd:$addr),
       !strconcat(opstr, "\t$ft, $addr"), [(set RC:$ft, (load_a addr:$addr))],
@@ -93,7 +94,7 @@ class FPStore<bits<6> op, string opstr, RegisterClass RC, Operand MemOpnd>:
   FMem<op, (outs), (ins RC:$ft, MemOpnd:$addr),
       !strconcat(opstr, "\t$ft, $addr"), [(store_a RC:$ft, addr:$addr)],
       IIStore>;
-
+}
 // FP indexed load.
 class FPIdxLoad<bits<6> funct, string opstr, RegisterClass DRC,
                 RegisterClass PRC, PatFrag FOp>:
@@ -118,11 +119,13 @@ multiclass FFR1_W_M<bits<6> funct, string opstr> {
   def _D32 : FFR1<funct, 17, opstr, "w.d", FGR32, AFGR64>,
              Requires<[NotFP64bit]>;
   def _D64 : FFR1<funct, 17, opstr, "w.d", FGR32, FGR64>,
-             Requires<[IsFP64bit]>;
+             Requires<[IsFP64bit]> {
+    let DecoderNamespace = "Mips64";
+  }
 }
 
 // Instructions that convert an FP value to 64-bit fixed point.
-let Predicates = [IsFP64bit] in
+let Predicates = [IsFP64bit], DecoderNamespace = "Mips64" in
 multiclass FFR1_L_M<bits<6> funct, string opstr> {
   def _S   : FFR1<funct, 16, opstr, "l.s", FGR64, FGR32>;
   def _D64 : FFR1<funct, 17, opstr, "l.d", FGR64, FGR64>;
@@ -134,7 +137,9 @@ multiclass FFR1P_M<bits<6> funct, string opstr, SDNode OpNode> {
   def _D32 : FFR1P<funct, 17, opstr, "d", AFGR64, AFGR64, OpNode>,
              Requires<[NotFP64bit]>;
   def _D64 : FFR1P<funct, 17, opstr, "d", FGR64, FGR64, OpNode>,
-             Requires<[IsFP64bit]>;
+             Requires<[IsFP64bit]> {
+    let DecoderNamespace = "Mips64";
+  }
 }
 
 multiclass FFR2P_M<bits<6> funct, string opstr, SDNode OpNode, bit isComm = 0> {
@@ -143,9 +148,11 @@ multiclass FFR2P_M<bits<6> funct, string opstr, SDNode OpNode, bit isComm = 0> {
   def _D32 : FFR2P<funct, 17, opstr, "d", AFGR64, OpNode>,
              Requires<[NotFP64bit]>;
   def _D64 : FFR2P<funct, 17, opstr, "d", FGR64, OpNode>,
-             Requires<[IsFP64bit]>;
+             Requires<[IsFP64bit]> {
+    let DecoderNamespace = "Mips64";
   }
 }
+}
 
 // FP madd/msub/nmadd/nmsub instruction classes.
 class FMADDSUB<bits<3> funct, bits<3> fmt, string opstr, string fmtstr,
@@ -172,9 +179,11 @@ defm CEIL_L  : FFR1_L_M<0xa, "ceil">;
 defm FLOOR_W : FFR1_W_M<0xf, "floor">;
 defm FLOOR_L : FFR1_L_M<0xb, "floor">;
 defm CVT_W   : FFR1_W_M<0x24, "cvt">;
-defm CVT_L   : FFR1_L_M<0x25, "cvt">;
+//defm CVT_L   : FFR1_L_M<0x25, "cvt">;
 
 def CVT_S_W : FFR1<0x20, 20, "cvt", "s.w", FGR32, FGR32>;
+def CVT_L_S : FFR1<0x25, 16, "cvt", "l.s", FGR64, FGR32>;
+def CVT_L_D64: FFR1<0x25, 17, "cvt", "l.d", FGR64, FGR64>;
 
 let Predicates = [NotFP64bit] in {
   def CVT_S_D32 : FFR1<0x20, 17, "cvt", "s.d", FGR32, AFGR64>;
@@ -182,7 +191,7 @@ let Predicates = [NotFP64bit] in {
   def CVT_D32_S : FFR1<0x21, 16, "cvt", "d.s", AFGR64, FGR32>;
 }
 
-let Predicates = [IsFP64bit] in {
+let Predicates = [IsFP64bit], DecoderNamespace = "Mips64" in {
  def CVT_S_D64 : FFR1<0x20, 17, "cvt", "s.d", FGR32, FGR64>;
  def CVT_S_L   : FFR1<0x20, 21, "cvt", "s.l", FGR32, FGR64>;
  def CVT_D64_W : FFR1<0x21, 20, "cvt", "d.w", FGR64, FGR32>;
@@ -233,14 +242,20 @@ def FMOV_S   : FFR1<0x6, 16, "mov", "s", FGR32, FGR32>;
 def FMOV_D32 : FFR1<0x6, 17, "mov", "d", AFGR64, AFGR64>,
                Requires<[NotFP64bit]>;
 def FMOV_D64 : FFR1<0x6, 17, "mov", "d", FGR64, FGR64>,
-               Requires<[IsFP64bit]>;
+               Requires<[IsFP64bit]> {
+  let DecoderNamespace = "Mips64";
+}
 
 /// Floating Point Memory Instructions
-let Predicates = [IsN64] in {
+let Predicates = [IsN64], DecoderNamespace = "Mips64" in {
   def LWC1_P8   : FPLoad<0x31, "lwc1", FGR32, mem64>;
   def SWC1_P8   : FPStore<0x39, "swc1", FGR32, mem64>;
-  def LDC164_P8 : FPLoad<0x35, "ldc1", FGR64, mem64>;
-  def SDC164_P8 : FPStore<0x3d, "sdc1", FGR64, mem64>;
+  def LDC164_P8 : FPLoad<0x35, "ldc1", FGR64, mem64> {
+    let isCodeGenOnly =1;
+  }
+  def SDC164_P8 : FPStore<0x3d, "sdc1", FGR64, mem64> {
+    let isCodeGenOnly =1;
+  }
 }
 
 let Predicates = [NotN64] in {
@@ -248,7 +263,7 @@ let Predicates = [NotN64] in {
   def SWC1   : FPStore<0x39, "swc1", FGR32, mem>;
 }
 
-let Predicates = [NotN64, HasMips64] in {
+let Predicates = [NotN64, HasMips64], DecoderNamespace = "Mips64" in {
   def LDC164 : FPLoad<0x35, "ldc1", FGR64, mem>;
   def SDC164 : FPStore<0x3d, "sdc1", FGR64, mem>;
 }
@@ -271,13 +286,13 @@ let Predicates = [HasMips32r2, NotMips64] in {
   def SDXC1 : FPIdxStore<0x9, "sdxc1", AFGR64, CPURegs, store_a>;
 }
 
-let Predicates = [HasMips64, NotN64] in {
+let Predicates = [HasMips64, NotN64], DecoderNamespace="Mips64" in {
   def LDXC164 : FPIdxLoad<0x1, "ldxc1", FGR64, CPURegs, load_a>;
   def SDXC164 : FPIdxStore<0x9, "sdxc1", FGR64, CPURegs, store_a>;
 }
 
 // n64
-let Predicates = [IsN64] in {
+let Predicates = [IsN64], isCodeGenOnly=1 in {
   def LWXC1_P8   : FPIdxLoad<0x0, "lwxc1", FGR32, CPU64Regs, load_a>;
   def LUXC1_P8   : FPIdxLoad<0x5, "luxc1", FGR32, CPU64Regs, load_u>;
   def LDXC164_P8 : FPIdxLoad<0x1, "ldxc1", FGR64, CPU64Regs, load_a>;
@@ -312,12 +327,12 @@ let Predicates = [HasMips32r2, NotFP64bit, NoNaNsFPMath] in {
   def NMSUB_D32 : FNMADDSUB<0x7, 1, "nmsub", "d", fsub, AFGR64>;
 }
 
-let Predicates = [HasMips32r2, IsFP64bit] in {
+let Predicates = [HasMips32r2, IsFP64bit], isCodeGenOnly=1 in {
   def MADD_D64 : FMADDSUB<0x4, 1, "madd", "d", fadd, FGR64>;
   def MSUB_D64 : FMADDSUB<0x5, 1, "msub", "d", fsub, FGR64>;
 }
 
-let Predicates = [HasMips32r2, IsFP64bit, NoNaNsFPMath] in {
+let Predicates = [HasMips32r2, IsFP64bit, NoNaNsFPMath], isCodeGenOnly=1 in {
   def NMADD_D64 : FNMADDSUB<0x6, 1, "nmadd", "d", fadd, FGR64>;
   def NMSUB_D64 : FNMADDSUB<0x7, 1, "nmsub", "d", fsub, FGR64>;
 }
@@ -340,9 +355,10 @@ let isBranch=1, isTerminator=1, hasDelaySlot=1, base=0x8, Uses=[FCR31] in
   let Inst{16} = tf;
 }
 
+let DecoderMethod = "DecodeBC1" in {
 def BC1F  : FBRANCH<0, 0, MIPS_BRANCH_F,  "bc1f">;
 def BC1T  : FBRANCH<0, 1, MIPS_BRANCH_T,  "bc1t">;
-
+}
 //===----------------------------------------------------------------------===//
 // Floating Point Flag Conditions
 //===----------------------------------------------------------------------===//
@@ -374,7 +390,9 @@ class FCMP<bits<5> fmt, RegisterClass RC, string typestr> :
 let Defs=[FCR31] in {
   def FCMP_S32 : FCMP<0x10, FGR32, "s">;
   def FCMP_D32 : FCMP<0x11, AFGR64, "d">, Requires<[NotFP64bit]>;
-  def FCMP_D64 : FCMP<0x11, FGR64, "d">, Requires<[IsFP64bit]>;
+  def FCMP_D64 : FCMP<0x11, FGR64, "d">, Requires<[IsFP64bit]> {
+    let DecoderNamespace = "Mips64";
+  }
 }
 
 //===----------------------------------------------------------------------===//
@@ -436,13 +454,13 @@ let Predicates = [IsFP64bit] in {
 
 // Patterns for unaligned floating point loads and stores.
 let Predicates = [HasMips32r2Or64, NotN64] in {
-  def : Pat<(f32 (load_u CPURegs:$addr)), (LUXC1 CPURegs:$addr, ZERO)>; 
+  def : Pat<(f32 (load_u CPURegs:$addr)), (LUXC1 CPURegs:$addr, ZERO)>;
   def : Pat<(store_u FGR32:$src, CPURegs:$addr),
             (SUXC1 FGR32:$src, CPURegs:$addr, ZERO)>;
 }
 
 let Predicates = [IsN64] in {
-  def : Pat<(f32 (load_u CPU64Regs:$addr)), (LUXC1_P8 CPU64Regs:$addr, ZERO_64)>; 
+  def : Pat<(f32 (load_u CPU64Regs:$addr)), (LUXC1_P8 CPU64Regs:$addr, ZERO_64)>;
   def : Pat<(store_u FGR32:$src, CPU64Regs:$addr),
             (SUXC1_P8 FGR32:$src, CPU64Regs:$addr, ZERO_64)>;
 }
diff --git a/lib/Target/Mips/MipsInstrFormats.td b/lib/Target/Mips/MipsInstrFormats.td
index 4555303..841eba0 100644
--- a/lib/Target/Mips/MipsInstrFormats.td
+++ b/lib/Target/Mips/MipsInstrFormats.td
@@ -45,6 +45,8 @@ class MipsInst<dag outs, dag ins, string asmstr, list<dag> pattern,
 
   let Namespace = "Mips";
 
+  let Size = 4;
+
   bits<6> Opcode = 0;
 
   // Top 6 bits are the 'opcode' field
@@ -64,6 +66,10 @@ class MipsInst<dag outs, dag ins, string asmstr, list<dag> pattern,
 
   // TSFlags layout should be kept in sync with MipsInstrInfo.h.
   let TSFlags{3-0}   = FormBits;
+
+  let DecoderNamespace = "Mips";
+
+  field bits<32> SoftFail = 0;
 }
 
 // Mips Pseudo Instructions Format
diff --git a/lib/Target/Mips/MipsInstrInfo.td b/lib/Target/Mips/MipsInstrInfo.td
index be74f8e..2cf0b18 100644
--- a/lib/Target/Mips/MipsInstrInfo.td
+++ b/lib/Target/Mips/MipsInstrInfo.td
@@ -121,21 +121,36 @@ def MipsIns :  SDNode<"MipsISD::Ins", SDT_Ins>;
 //===----------------------------------------------------------------------===//
 // Mips Instruction Predicate Definitions.
 //===----------------------------------------------------------------------===//
-def HasSEInReg  : Predicate<"Subtarget.hasSEInReg()">;
-def HasBitCount : Predicate<"Subtarget.hasBitCount()">;
-def HasSwap     : Predicate<"Subtarget.hasSwap()">;
-def HasCondMov  : Predicate<"Subtarget.hasCondMov()">;
-def HasMips32    : Predicate<"Subtarget.hasMips32()">;
-def HasMips32r2  : Predicate<"Subtarget.hasMips32r2()">;
-def HasMips64    : Predicate<"Subtarget.hasMips64()">;
-def HasMips32r2Or64 : Predicate<"Subtarget.hasMips32r2Or64()">;
-def NotMips64    : Predicate<"!Subtarget.hasMips64()">;
-def HasMips64r2  : Predicate<"Subtarget.hasMips64r2()">;
-def IsN64       : Predicate<"Subtarget.isABI_N64()">;
-def NotN64      : Predicate<"!Subtarget.isABI_N64()">;
-def RelocStatic : Predicate<"TM.getRelocationModel() == Reloc::Static">;
-def RelocPIC    : Predicate<"TM.getRelocationModel() == Reloc::PIC_">;
-def NoNaNsFPMath : Predicate<"TM.Options.NoNaNsFPMath">;
+def HasSEInReg  :     Predicate<"Subtarget.hasSEInReg()">,
+                      AssemblerPredicate<"FeatureSEInReg">;
+def HasBitCount :     Predicate<"Subtarget.hasBitCount()">,
+                      AssemblerPredicate<"FeatureBitCount">;
+def HasSwap     :     Predicate<"Subtarget.hasSwap()">,
+                      AssemblerPredicate<"FeatureSwap">;
+def HasCondMov  :     Predicate<"Subtarget.hasCondMov()">,
+                      AssemblerPredicate<"FeatureCondMov">;
+def HasMips32    :    Predicate<"Subtarget.hasMips32()">,
+                      AssemblerPredicate<"FeatureMips32">;
+def HasMips32r2  :    Predicate<"Subtarget.hasMips32r2()">,
+                      AssemblerPredicate<"FeatureMips32r2">;
+def HasMips64    :    Predicate<"Subtarget.hasMips64()">,
+                      AssemblerPredicate<"FeatureMips64">;
+def HasMips32r2Or64 : Predicate<"Subtarget.hasMips32r2Or64()">,
+                      AssemblerPredicate<"FeatureMips32r2,FeatureMips64">;
+def NotMips64    :    Predicate<"!Subtarget.hasMips64()">,
+                      AssemblerPredicate<"!FeatureMips64">;
+def HasMips64r2  :    Predicate<"Subtarget.hasMips64r2()">,
+                      AssemblerPredicate<"FeatureMips64r2">;
+def IsN64       :     Predicate<"Subtarget.isABI_N64()">,
+                      AssemblerPredicate<"FeatureN64">;
+def NotN64      :     Predicate<"!Subtarget.isABI_N64()">,
+                      AssemblerPredicate<"!FeatureN64">;
+def RelocStatic :     Predicate<"TM.getRelocationModel() == Reloc::Static">,
+                      AssemblerPredicate<"FeatureMips32">;
+def RelocPIC    :     Predicate<"TM.getRelocationModel() == Reloc::PIC_">,
+                      AssemblerPredicate<"FeatureMips32">;
+def NoNaNsFPMath :    Predicate<"TM.Options.NoNaNsFPMath">,
+                      AssemblerPredicate<"FeatureMips32">;
 
 //===----------------------------------------------------------------------===//
 // Mips Operand, Complex Patterns and Transformations Definitions.
@@ -148,12 +163,15 @@ def jmptarget   : Operand<OtherVT> {
 def brtarget    : Operand<OtherVT> {
   let EncoderMethod = "getBranchTargetOpValue";
   let OperandType = "OPERAND_PCREL";
+  let DecoderMethod = "DecodeBranchTarget";
 }
 def calltarget  : Operand<iPTR> {
   let EncoderMethod = "getJumpTargetOpValue";
 }
 def calltarget64: Operand<i64>;
-def simm16      : Operand<i32>;
+def simm16      : Operand<i32> {
+  let DecoderMethod= "DecodeSimm16";
+}
 def simm16_64   : Operand<i64>;
 def shamt       : Operand<i32>;
 
@@ -189,11 +207,13 @@ def mem_ea_64 : Operand<i64> {
 // size operand of ext instruction
 def size_ext : Operand<i32> {
   let EncoderMethod = "getSizeExtEncoding";
+  let DecoderMethod = "DecodeExtSize";
 }
 
 // size operand of ins instruction
 def size_ins : Operand<i32> {
   let EncoderMethod = "getSizeInsEncoding";
+  let DecoderMethod = "DecodeInsSize";
 }
 
 // Transformation Function - get the lower 16 bits.
@@ -365,7 +385,6 @@ class LoadUpper<bits<6> op, string instr_asm, RegisterClass RC, Operand Imm>:
   FI<op, (outs RC:$rt), (ins Imm:$imm16),
      !strconcat(instr_asm, "\t$rt, $imm16"), [], IIAlu> {
   let rs = 0;
-  let neverHasSideEffects = 1;
 }
 
 class FMem<bits<6> op, dag outs, dag ins, string asmstr, list<dag> pattern,
@@ -373,6 +392,7 @@ class FMem<bits<6> op, dag outs, dag ins, string asmstr, list<dag> pattern,
   bits<21> addr;
   let Inst{25-21} = addr{20-16};
   let Inst{15-0}  = addr{15-0};
+  let DecoderMethod = "DecodeMem";
 }
 
 // Memory Load/Store
@@ -407,7 +427,10 @@ multiclass LoadM32<bits<6> op, string instr_asm, PatFrag OpNode,
   def #NAME# : LoadM<op, instr_asm, OpNode, CPURegs, mem, Pseudo>,
                Requires<[NotN64]>;
   def _P8    : LoadM<op, instr_asm, OpNode, CPURegs, mem64, Pseudo>,
-               Requires<[IsN64]>;
+               Requires<[IsN64]> {
+    let DecoderNamespace = "Mips64";
+    let isCodeGenOnly = 1;
+  }
 }
 
 // 64-bit load.
@@ -416,7 +439,10 @@ multiclass LoadM64<bits<6> op, string instr_asm, PatFrag OpNode,
   def #NAME# : LoadM<op, instr_asm, OpNode, CPU64Regs, mem, Pseudo>,
                Requires<[NotN64]>;
   def _P8    : LoadM<op, instr_asm, OpNode, CPU64Regs, mem64, Pseudo>,
-               Requires<[IsN64]>;
+               Requires<[IsN64]> {
+    let DecoderNamespace = "Mips64";
+    let isCodeGenOnly = 1;
+  }
 }
 
 // 32-bit load.
@@ -424,7 +450,10 @@ multiclass LoadUnAlign32<bits<6> op> {
   def #NAME# : LoadUnAlign<op, CPURegs, mem>,
                Requires<[NotN64]>;
   def _P8    : LoadUnAlign<op, CPURegs, mem64>,
-               Requires<[IsN64]>;
+               Requires<[IsN64]> {
+    let DecoderNamespace = "Mips64";
+    let isCodeGenOnly = 1;
+  }
 }
 // 32-bit store.
 multiclass StoreM32<bits<6> op, string instr_asm, PatFrag OpNode,
@@ -432,7 +461,10 @@ multiclass StoreM32<bits<6> op, string instr_asm, PatFrag OpNode,
   def #NAME# : StoreM<op, instr_asm, OpNode, CPURegs, mem, Pseudo>,
                Requires<[NotN64]>;
   def _P8    : StoreM<op, instr_asm, OpNode, CPURegs, mem64, Pseudo>,
-               Requires<[IsN64]>;
+               Requires<[IsN64]> {
+    let DecoderNamespace = "Mips64";
+    let isCodeGenOnly = 1;
+  }
 }
 
 // 64-bit store.
@@ -441,7 +473,10 @@ multiclass StoreM64<bits<6> op, string instr_asm, PatFrag OpNode,
   def #NAME# : StoreM<op, instr_asm, OpNode, CPU64Regs, mem, Pseudo>,
                Requires<[NotN64]>;
   def _P8    : StoreM<op, instr_asm, OpNode, CPU64Regs, mem64, Pseudo>,
-               Requires<[IsN64]>;
+               Requires<[IsN64]> {
+    let DecoderNamespace = "Mips64";
+    let isCodeGenOnly = 1;
+  }
 }
 
 // 32-bit store.
@@ -449,7 +484,10 @@ multiclass StoreUnAlign32<bits<6> op> {
   def #NAME# : StoreUnAlign<op, CPURegs, mem>,
                Requires<[NotN64]>;
   def _P8    : StoreUnAlign<op, CPURegs, mem64>,
-               Requires<[IsN64]>;
+               Requires<[IsN64]> {
+    let DecoderNamespace = "Mips64";
+    let isCodeGenOnly = 1;
+  }
 }
 
 // Conditional Branch
@@ -499,6 +537,7 @@ class JumpFJ<bits<6> op, string instr_asm>:
   let isBarrier=1;
   let hasDelaySlot = 1;
   let Predicates = [RelocStatic];
+  let DecoderMethod = "DecodeJumpTarget";
 }
 
 // Unconditional branch
@@ -529,7 +568,9 @@ let isCall=1, hasDelaySlot=1 in {
   class JumpLink<bits<6> op, string instr_asm>:
     FJ<op, (outs), (ins calltarget:$target, variable_ops),
        !strconcat(instr_asm, "\t$target"), [(MipsJmpLink imm:$target)],
-       IIBranch>;
+       IIBranch> {
+       let DecoderMethod = "DecodeJumpTarget";
+       }
 
   class JumpLinkReg<bits<6> op, bits<6> func, string instr_asm,
                     RegisterClass RC>:
@@ -556,7 +597,6 @@ class Mult<bits<6> func, string instr_asm, InstrItinClass itin,
   let shamt = 0;
   let isCommutable = 1;
   let Defs = DefRegs;
-  let neverHasSideEffects = 1;
 }
 
 class Mult32<bits<6> func, string instr_asm, InstrItinClass itin>:
@@ -584,7 +624,6 @@ class MoveFromLOHI<bits<6> func, string instr_asm, RegisterClass RC,
   let rt = 0;
   let shamt = 0;
   let Uses = UseRegs;
-  let neverHasSideEffects = 1;
 }
 
 class MoveToLOHI<bits<6> func, string instr_asm, RegisterClass RC,
@@ -595,7 +634,6 @@ class MoveToLOHI<bits<6> func, string instr_asm, RegisterClass RC,
   let rd = 0;
   let shamt = 0;
   let Defs = DefRegs;
-  let neverHasSideEffects = 1;
 }
 
 class EffectiveAddress<string instr_asm, RegisterClass RC, Operand Mem> :
@@ -639,7 +677,6 @@ class SubwordSwap<bits<6> func, bits<5> sa, string instr_asm, RegisterClass RC>:
   let rs = 0;
   let shamt = sa;
   let Predicates = [HasSwap];
-  let neverHasSideEffects = 1;
 }
 
 // Read Hardware
@@ -685,7 +722,9 @@ class Atomic2Ops<PatFrag Op, string Opstr, RegisterClass DRC,
 
 multiclass Atomic2Ops32<PatFrag Op, string Opstr> {
   def #NAME# : Atomic2Ops<Op, Opstr, CPURegs, CPURegs>, Requires<[NotN64]>;
-  def _P8    : Atomic2Ops<Op, Opstr, CPURegs, CPU64Regs>, Requires<[IsN64]>;
+  def _P8    : Atomic2Ops<Op, Opstr, CPURegs, CPU64Regs>, Requires<[IsN64]> {
+    let DecoderNamespace = "Mips64";
+  }
 }
 
 // Atomic Compare & Swap.
@@ -697,7 +736,9 @@ class AtomicCmpSwap<PatFrag Op, string Width, RegisterClass DRC,
 
 multiclass AtomicCmpSwap32<PatFrag Op, string Width>  {
   def #NAME# : AtomicCmpSwap<Op, Width, CPURegs, CPURegs>, Requires<[NotN64]>;
-  def _P8    : AtomicCmpSwap<Op, Width, CPURegs, CPU64Regs>, Requires<[IsN64]>;
+  def _P8    : AtomicCmpSwap<Op, Width, CPURegs, CPU64Regs>, Requires<[IsN64]> {
+    let DecoderNamespace = "Mips64";
+  }
 }
 
 class LLBase<bits<6> Opc, string opstring, RegisterClass RC, Operand Mem> :
@@ -727,13 +768,24 @@ def ADJCALLSTACKUP   : MipsPseudo<(outs), (ins uimm16:$amt1, uimm16:$amt2),
                                   [(callseq_end timm:$amt1, timm:$amt2)]>;
 }
 
+// Some assembly macros need to avoid pseudoinstructions and assembler
+// automatic reodering, we should reorder ourselves.
+def MACRO     : MipsPseudo<(outs), (ins), ".set\tmacro",     []>;
+def REORDER   : MipsPseudo<(outs), (ins), ".set\treorder",   []>;
+def NOMACRO   : MipsPseudo<(outs), (ins), ".set\tnomacro",   []>;
+def NOREORDER : MipsPseudo<(outs), (ins), ".set\tnoreorder", []>;
+
+// These macros are inserted to prevent GAS from complaining
+// when using the AT register.
+def NOAT      : MipsPseudo<(outs), (ins), ".set\tnoat", []>;
+def ATMACRO   : MipsPseudo<(outs), (ins), ".set\tat", []>;
+
 // When handling PIC code the assembler needs .cpload and .cprestore
 // directives. If the real instructions corresponding these directives
 // are used, we have the same behavior, but get also a bunch of warnings
 // from the assembler.
-let neverHasSideEffects = 1 in
-def CPRESTORE : MipsPseudo<(outs), (ins i32imm:$loc, CPURegs:$gp),
-                           ".cprestore\t$loc", []>;
+def CPLOAD : MipsPseudo<(outs), (ins CPURegs:$picreg), ".cpload\t$picreg", []>;
+def CPRESTORE : MipsPseudo<(outs), (ins i32imm:$loc), ".cprestore\t$loc", []>;
 
 // For O32 ABI & PIC & non-fixed global base register, the following instruction
 // seqeunce is emitted to set the global base register:
@@ -751,10 +803,7 @@ def CPRESTORE : MipsPseudo<(outs), (ins i32imm:$loc, CPURegs:$gp),
 // before or between instructions 0 and 1, which is a limitation imposed by
 // GNU linker.
 
-let isTerminator = 1, isBarrier = 1 in
 def SETGP01 : MipsPseudo<(outs CPURegs:$dst), (ins), "", []>;
-
-let neverHasSideEffects = 1 in
 def SETGP2 : MipsPseudo<(outs CPURegs:$globalreg), (ins CPURegs:$picreg), "",
                         []>;
 
@@ -868,9 +917,14 @@ def SYNC : MipsInst<(outs), (ins i32imm:$stype), "sync $stype",
 
 /// Load-linked, Store-conditional
 def LL    : LLBase<0x30, "ll", CPURegs, mem>, Requires<[NotN64]>;
-def LL_P8 : LLBase<0x30, "ll", CPURegs, mem64>, Requires<[IsN64]>;
+def LL_P8 : LLBase<0x30, "ll", CPURegs, mem64>, Requires<[IsN64]> {
+  let DecoderNamespace = "Mips64";
+}
+
 def SC    : SCBase<0x38, "sc", CPURegs, mem>, Requires<[NotN64]>;
-def SC_P8 : SCBase<0x38, "sc", CPURegs, mem64>, Requires<[IsN64]>;
+def SC_P8 : SCBase<0x38, "sc", CPURegs, mem64>, Requires<[IsN64]> {
+  let DecoderNamespace = "Mips64";
+}
 
 /// Jump and Branch Instructions
 def J       : JumpFJ<0x02, "j">;
@@ -888,7 +942,7 @@ def JALR : JumpLinkReg<0x00, 0x09, "jalr", CPURegs>;
 def BGEZAL  : BranchLink<"bgezal", 0x11, CPURegs>;
 def BLTZAL  : BranchLink<"bltzal", 0x10, CPURegs>;
 
-let isReturn=1, isTerminator=1, hasDelaySlot=1,
+let isReturn=1, isTerminator=1, hasDelaySlot=1, isCodeGenOnly=1,
     isBarrier=1, hasCtrlDep=1, rd=0, rt=0, shamt=0 in
   def RET : FR <0x00, 0x08, (outs), (ins CPURegs:$target),
                 "jr\t$target", [(MipsRet CPURegs:$target)], IIBranch>;
@@ -923,13 +977,17 @@ let addr=0 in
 // instructions. The same not happens for stack address copies, so an
 // add op with mem ComplexPattern is used and the stack address copy
 // can be matched. It's similar to Sparc LEA_ADDRi
-def LEA_ADDiu : EffectiveAddress<"addiu\t$rt, $addr", CPURegs, mem_ea>;
+def LEA_ADDiu : EffectiveAddress<"addiu\t$rt, $addr", CPURegs, mem_ea> {
+  let isCodeGenOnly = 1;
+}
 
 // DynAlloc node points to dynamically allocated stack space.
 // $sp is added to the list of implicitly used registers to prevent dead code
 // elimination from removing instructions that modify $sp.
 let Uses = [SP] in
-def DynAlloc : EffectiveAddress<"addiu\t$rt, $addr", CPURegs, mem_ea>;
+def DynAlloc : EffectiveAddress<"addiu\t$rt, $addr", CPURegs, mem_ea> {
+  let isCodeGenOnly = 1;
+}
 
 // MADD*/MSUB*
 def MADD  : MArithR<0, "madd", MipsMAdd, 1>;
diff --git a/test/MC/Disassembler/Mips/mips32.txt b/test/MC/Disassembler/Mips/mips32.txt
new file mode 100644
index 0000000..591d8c4
--- /dev/null
+++ b/test/MC/Disassembler/Mips/mips32.txt
@@ -0,0 +1,421 @@
+# RUN: llvm-mc --disassemble %s -triple=mips-unknown-linux
+
+# CHECK: abs.d $f12,$f14
+0x46 0x20 0x39 0x85
+
+# CHECK: abs.s $f6,$f7
+0x46 0x00 0x39 0x85
+
+# CHECK: add t1,a2,a3
+0x00 0xc7 0x48 0x20
+
+# CHECK: add.d $f18,$f12,$f14
+0x46 0x27 0x32 0x40
+
+# CHECK: add.s $f9,$f6,$f7
+0x46 0x07 0x32 0x40
+
+# CHECK: addi t1,a2,17767
+0x20 0xc9 0x45 0x67
+
+# CHECK: addiu t1,a2,-15001
+0x24 0xc9 0xc5 0x67
+
+# CHECK: addu t1,a2,a3
+0x00 0xc7 0x48 0x21
+
+# CHECK: and t1,a2,a3
+0x00 0xc7 0x48 0x24
+
+# CHECK: andi t1,a2,0x4567
+0x30 0xc9 0x45 0x67
+
+# CHECK: b 00000534
+0x10 0x00 0x01 0x4c
+
+# CHECK: bal 00000534
+0x04 0x11 0x01 0x4c
+
+# CHECK: bc1f 00000534
+0x45 0x00 0x01 0x4c
+
+# CHECK: bc1t 00000534
+0x45 0x01 0x01 0x4c
+
+# CHECK: beq t1,a2,00000534
+0x11 0x26 0x01 0x4c
+
+# CHECK: bgez a2,00000534
+0x04 0xc1 0x01 0x4c
+
+# CHECK: bgezal a2,00000534
+0x04 0xd1 0x01 0x4c
+
+# CHECK: bgtz a2,00000534
+0x1c 0xc0 0x01 0x4c
+
+# CHECK: blez a2,00000534
+0x18 0xc0 0x01 0x4c
+
+# CHECK: bne t1,a2,00000534
+0x15 0x26 0x01 0x4c
+
+# CHECK: c.eq.d $f12,$f14
+0x46 0x27 0x30 0x32
+
+# CHECK: c.eq.s $f6,$f7
+0x46 0x07 0x30 0x32
+
+# CHECK: c.f.d $f12,$f14
+0x46 0x27 0x30 0x30
+
+# CHECK: c.f.s $f6,$f7
+0x46 0x07 0x30 0x30
+
+# CHECK: c.le.d $f12,$f14
+0x46 0x27 0x30 0x3e
+
+# CHECK: c.le.s $f6,$f7
+0x46 0x07 0x30 0x3e
+
+# CHECK: c.lt.d $f12,$f14
+0x46 0x27 0x30 0x3c
+
+# CHECK: c.lt.s $f6,$f7
+0x46 0x07 0x30 0x3c
+
+# CHECK: c.nge.d $f12,$f14
+0x46 0x27 0x30 0x3d
+
+# CHECK: c.nge.s $f6,$f7
+0x46 0x07 0x30 0x3d
+
+# CHECK: c.ngl.d $f12,$f14
+0x46 0x27 0x30 0x3b
+
+# CHECK: c.ngl.s $f6,$f7
+0x46 0x07 0x30 0x3b
+
+# CHECK: c.ngle.d $f12,$f14
+0x46 0x27 0x30 0x39
+
+# CHECK: c.ngle.s $f6,$f7
+0x46 0x07 0x30 0x39
+
+# CHECK: c.ngt.d $f12,$f14
+0x46 0x27 0x30 0x3f
+
+# CHECK: c.ngt.s $f6,$f7
+0x46 0x07 0x30 0x3f
+
+# CHECK: c.ole.d $f12,$f14
+0x46 0x27 0x30 0x36
+
+# CHECK: c.ole.s $f6,$f7
+0x46 0x07 0x30 0x36
+
+# CHECK: c.olt.d $f12,$f14
+0x46 0x27 0x30 0x34
+
+# CHECK: c.olt.s $f6,$f7
+0x46 0x07 0x30 0x34
+
+# CHECK: c.seq.d $f12,$f14
+0x46 0x27 0x30 0x3a
+
+# CHECK: c.seq.s $f6,$f7
+0x46 0x07 0x30 0x3a
+
+# CHECK: c.sf.d $f12,$f14
+0x46 0x27 0x30 0x38
+
+# CHECK: c.sf.s $f6,$f7
+0x46 0x07 0x30 0x38
+
+# CHECK: c.ueq.d $f12,$f14
+0x46 0x27 0x30 0x33
+
+# CHECK: c.ueq.s $f28,$f18
+0x46 0x12 0xe0 0x33
+
+# CHECK: c.ule.d $f12,$f14
+0x46 0x27 0x30 0x37
+
+# CHECK: c.ule.s $f6,$f7
+0x46 0x07 0x30 0x37
+
+# CHECK: c.ult.d $f12,$f14
+0x46 0x27 0x30 0x35
+
+# CHECK: c.ult.s $f6,$f7
+0x46 0x07 0x30 0x35
+
+# CHECK: c.un.d $f12,$f14
+0x46 0x27 0x30 0x31
+
+# CHECK: c.un.s $f6,$f7
+0x46 0x07 0x30 0x31
+
+# CHECK: ceil.w.d $f12,$f14
+0x46 0x20 0x39 0x8e
+
+# CHECK: ceil.w.s $f6,$f7
+0x46 0x00 0x39 0x8e
+
+# CHECK: cfc1 a2,$7
+0x44 0x46 0x38 0x00
+
+# CHECK: clo a2,a3
+0x70 0xe6 0x30 0x21
+
+# CHECK: clz a2,a3
+0x70 0xe6 0x30 0x20
+
+# CHECK: ctc1 a2,$7
+0x44 0xc6 0x38 0x00
+
+# CHECK: cvt.d.s $f6,$f7
+0x46 0x00 0x38 0xa1
+
+# CHECK: cvt.d.w $f12,$f14
+0x46 0x80 0x38 0xa1
+
+# CHECK: cvt.l.d $f12,$f14
+0x46 0x20 0x39 0xa5
+
+# CHECK: cvt.l.s $f6,$f7
+0x46 0x00 0x39 0xa5
+
+# CHECK: cvt.s.d $f12,$f14
+0x46 0x20 0x39 0xa0
+
+# CHECK: cvt.s.w $f6,$f7
+0x46 0x80 0x39 0xa0
+
+# CHECK: cvt.w.d $f12,$f14
+0x46 0x20 0x39 0xa4
+
+# CHECK: cvt.w.s $f6,$f7
+0x46 0x00 0x39 0xa4
+
+# CHECK: floor.w.d $f12,$f14
+0x46 0x20 0x39 0x8f
+
+# CHECK: floor.w.s $f6,$f7
+0x46 0x00 0x39 0x8f
+
+# CHECK: j 00000530
+0x08 0x00 0x01 0x4c
+
+# CHECK: jal 00000530
+0x0c 0x00 0x01 0x4c
+
+# CHECK: jalr a2,a3
+0x00 0xe0 0xf8 0x09
+
+# CHECK: jr a3
+0x00 0xe0 0x00 0x08
+
+# CHECK: lb  a0,9158(a1)
+0x80 0xa4 0x23 0xc6
+
+# CHECK: lbu a0,6(a1)
+0x90 0xa4 0x00 0x06
+
+# CHECK: ldc1  $f9,9158(a3)
+0xd4 0xe9 0x23 0xc6
+
+# CHECK: lh  a0,12(a1)
+0x84 0xa4 0x00 0x0c
+
+# CHECK: lh  a0,12(a1)
+0x84 0xa4 0x00 0x0c
+
+# CHECK: li  v1,17767
+0x24 0x03 0x45 0x67
+
+# CHECK: ll  t1,9158(a3)
+0xc0 0xe9 0x23 0xc6
+
+# CHECK: lui a2,0x4567
+0x3c 0x06 0x45 0x67
+
+# CHECK: lw  a0,24(a1)
+0x8c 0xa4 0x00 0x18
+
+# CHECK: lwc1  $f9,9158(a3)
+0xc4 0xe9 0x23 0xc6
+
+# CHECK: madd  a2,a3
+0x70 0xc7 0x00 0x00
+
+# CHECK: maddu a2,a3
+0x70 0xc7 0x00 0x01
+
+# CHECK: mfc1  a2,$f7
+0x44 0x06 0x38 0x00
+
+# CHECK: mfhi  a1
+0x00 0x00 0x28 0x10
+
+# CHECK: mflo  a1
+0x00 0x00 0x28 0x12
+
+# CHECK: mov.d $f6,$f7
+0x46 0x20 0x39 0x86
+
+# CHECK: mov.s $f6,$f7
+0x46 0x00 0x39 0x86
+
+# CHECK: move  a2,a1
+0x00 0xa0 0x30 0x21
+
+# CHECK: msub  a2,a3
+0x70 0xc7 0x00 0x04
+
+# CHECK: msubu a2,a3
+0x70 0xc7 0x00 0x05
+
+# CHECK: mtc1  a2,$f7
+0x44 0x86 0x38 0x00
+
+# CHECK: mthi  a3
+0x00 0xe0 0x00 0x11
+
+# CHECK: mtlo  a3
+0x00 0xe0 0x00 0x13
+
+# CHECK: mul.d $f9,$f12,$f14
+0x46 0x27 0x32 0x42
+
+# CHECK: mul.s $f9,$f6,$f7
+0x46 0x07 0x32 0x42
+
+# CHECK: mul t1,a2,a3
+0x70 0xc7 0x48 0x02
+
+# CHECK: mult  v1,a1
+0x00 0x65 0x00 0x18
+
+# CHECK: multu v1,a1
+0x00 0x65 0x00 0x19
+
+# CHECK: neg.d $f12,$f14
+0x46 0x20 0x39 0x87
+
+# CHECK: neg.s $f6,$f7
+0x46 0x00 0x39 0x87
+
+# CHECK: neg v1,a1
+0x00 0x05 0x18 0x22
+
+# CHECK: nop
+0x00 0x00 0x00 0x00
+
+# CHECK: nor t1,a2,a3
+0x00 0xc7 0x48 0x27
+
+# CHECK: not v1,a1
+0x00 0xa0 0x18 0x27
+
+# CHECK: or  v1,v1,a1
+0x00 0x65 0x18 0x25
+
+# CHECK: ori t1,a2,0x4567
+0x34 0xc9 0x45 0x67
+
+# CHECK: rdhwr a2,$29
+0x7c 0x06 0xe8 0x3b
+
+# CHECK: round.w.d $f12,$f14
+0x46 0x20 0x39 0x8c
+
+# CHECK: round.w.s $f6,$f7
+0x46 0x00 0x39 0x8c
+
+# CHECK: sb  a0,9158(a1)
+0xa0 0xa4 0x23 0xc6
+
+# CHECK: sb  a0,6(a1)
+0xa0 0xa4 0x00 0x06
+
+# CHECK: sc  t1,9158(a3)
+0xe0 0xe9 0x23 0xc6
+
+# CHECK: sdc1  $f9,9158(a3)
+0xf4 0xe9 0x23 0xc6
+
+# CHECK: sh  a0,9158(a1)
+0xa4 0xa4 0x23 0xc6
+
+# CHECK: sll a0,v1,0x7
+0x00 0x03 0x21 0xc0
+
+# CHECK: sllv  v0,v1,a1
+0x00 0xa3 0x10 0x04
+
+# CHECK: slt v1,v1,a1
+0x00 0x65 0x18 0x2a
+
+# CHECK: slti  v1,v1,103
+0x28 0x63 0x00 0x67
+
+# CHECK: sltiu v1,v1,103
+0x2c 0x63 0x00 0x67
+
+# CHECK: sltu  v1,v1,a1
+0x00 0x65 0x18 0x2b
+
+# CHECK: sqrt.d  $f12,$f14
+0x46 0x20 0x39 0x84
+
+# CHECK: sqrt.s  $f6,$f7
+0x46 0x00 0x39 0x84
+
+# CHECK: sra a0,v1,0x7
+0x00 0x03 0x21 0xc3
+
+# CHECK: sra a0,v1,0x7
+0x00 0x03 0x21 0xc3
+
+# CHECK: srav  v0,v1,a1
+0x00 0xa3 0x10 0x07
+
+# CHECK: srl a0,v1,0x7
+0x00 0x03 0x21 0xc2
+
+# CHECK: srlv  v0,v1,a1
+0x00 0xa3 0x10 0x06
+
+# CHECK: sub.d $f9,$f12,$f14
+0x46 0x27 0x32 0x41
+
+# CHECK: sub.s $f9,$f6,$f7
+0x46 0x07 0x32 0x41
+
+# CHECK: sub t1,a2,a3
+0x00 0xc7 0x48 0x22
+
+# CHECK: subu  a0,v1,a1
+0x00 0x65 0x20 0x23
+
+# CHECK: sw  a0,24(a1)
+0xac 0xa4 0x00 0x18
+
+# CHECK: swc1  $f9,9158(a3)
+0xe4 0xe9 0x23 0xc6
+
+# CHECK: sync  0x7
+0x00 0x00 0x01 0xcf
+
+# CHECK: trunc.w.d $f12,$f14
+0x46 0x20 0x39 0x8d
+
+# CHECK: trunc.w.s $f6,$f7
+0x46 0x00 0x39 0x8d
+
+# CHECK: xor v1,v1,a1
+0x00 0x65 0x18 0x26
+
+# CHECK: xori  t1,a2,0x4567
+0x38 0xc9 0x45 0x67
diff --git a/test/MC/Disassembler/Mips/mips32_le.txt b/test/MC/Disassembler/Mips/mips32_le.txt
new file mode 100644
index 0000000..a5a3cfd
--- /dev/null
+++ b/test/MC/Disassembler/Mips/mips32_le.txt
@@ -0,0 +1,424 @@
+# RUN: llvm-mc --disassemble %s -triple=mipsel-unknown-linux
+
+# CHECK: abs.d $f12,$f14
+0x85 0x39 0x20 0x46
+
+# CHECK: abs.s $f6,$f7
+0x85 0x39 0x00 0x46
+
+# CHECK: add t1,a2,a3
+0x20 0x48 0xc7 0x00
+
+# CHECK: add.d $f18,$f12,$f14
+0x40 0x32 0x27 0x46
+
+# CHECK: add.s $f9,$f6,$f7
+0x40 0x32 0x07 0x46
+
+# CHECK: addi t1,a2,17767
+0x67 0x45 0xc9 0x20
+
+# CHECK: addiu t1,a2,-15001
+0x67 0xc5 0xc9 0x24
+
+# CHECK: addu t1,a2,a3
+0x21 0x48 0xc7 0x00
+
+# CHECK: and t1,a2,a3
+0x24 0x48 0xc7 0x00
+
+# CHECK: andi t1,a2,0x4567
+0x67 0x45 0xc9 0x30
+
+# CHECK: b 00000534
+0x4c 0x01 0x00 0x10
+
+# CHECK: bal 00000534
+0x4c 0x01 0x11 0x04
+
+# CHECK: bc1f 00000534
+0x4c 0x01 0x00 0x45
+
+# CHECK: bc1t 00000534
+0x4c 0x01 0x01 0x45
+
+# CHECK: beq t1,a2,00000534
+0x4c 0x01 0x26 0x11
+
+# CHECK: bgez a2,00000534
+0x4c 0x01 0xc1 0x04
+
+# CHECK: bgezal a2,00000534
+0x4c 0x01 0xd1 0x04
+
+# CHECK: bgtz a2,00000534
+0x4c 0x01 0xc0 0x1c
+
+# CHECK: blez a2,00000534
+0x4c 0x01 0xc0 0x18
+
+# CHECK: bne t1,a2,00000534
+0x4c 0x01 0x26 0x15
+
+# CHECK: c.eq.d $f12,$f14
+0x32 0x30 0x27 0x46
+
+# CHECK: c.eq.s $f6,$f7
+0x32 0x30 0x07 0x46
+
+# CHECK: c.f.d $f12,$f14
+0x30 0x30 0x27 0x46
+
+# CHECK: c.f.s $f6,$f7
+0x30 0x30 0x07 0x46
+
+# CHECK: c.le.d $f12,$f14
+0x3e 0x30 0x27 0x46
+
+# CHECK: c.le.s $f6,$f7
+0x3e 0x30 0x07 0x46
+
+# CHECK: c.lt.d $f12,$f14
+0x3c 0x30 0x27 0x46
+
+# CHECK: c.lt.s $f6,$f7
+0x3c 0x30 0x07 0x46
+
+# CHECK: c.nge.d $f12,$f14
+0x3d 0x30 0x27 0x46
+
+# CHECK: c.nge.s $f6,$f7
+0x3d 0x30 0x07 0x46
+
+# CHECK: c.ngl.d $f12,$f14
+0x3b 0x30 0x27 0x46
+
+# CHECK: c.ngl.s $f6,$f7
+0x3b 0x30 0x07 0x46
+
+# CHECK: c.ngle.d $f12,$f14
+0x39 0x30 0x27 0x46
+
+# CHECK: c.ngle.s $f6,$f7
+0x39 0x30 0x07 0x46
+
+# CHECK: c.ngt.d $f12,$f14
+0x3f 0x30 0x27 0x46
+
+# CHECK: c.ngt.s $f6,$f7
+0x3f 0x30 0x07 0x46
+
+# CHECK: c.ole.d $f12,$f14
+0x36 0x30 0x27 0x46
+
+# CHECK: c.ole.s $f6,$f7
+0x36 0x30 0x07 0x46
+
+# CHECK: c.olt.d $f12,$f14
+0x34 0x30 0x27 0x46
+
+# CHECK: c.olt.s $f6,$f7
+0x34 0x30 0x07 0x46
+
+# CHECK: c.seq.d $f12,$f14
+0x3a 0x30 0x27 0x46
+
+# CHECK: c.seq.s $f6,$f7
+0x3a 0x30 0x07 0x46
+
+# CHECK: c.sf.d $f12,$f14
+0x38 0x30 0x27 0x46
+
+# CHECK: c.sf.s $f6,$f7
+0x38 0x30 0x07 0x46
+
+# CHECK: c.ueq.d $f12,$f14
+0x33 0x30 0x27 0x46
+
+# CHECK: c.ueq.s $f28,$f18
+0x33 0xe0 0x12 0x46
+
+# CHECK: c.ule.d $f12,$f14
+0x37 0x30 0x27 0x46
+
+# CHECK: c.ule.s $f6,$f7
+0x37 0x30 0x07 0x46
+
+# CHECK: c.ult.d $f12,$f14
+0x35 0x30 0x27 0x46
+
+# CHECK: c.ult.s $f6,$f7
+0x35 0x30 0x07 0x46
+
+# CHECK: c.un.d $f12,$f14
+0x31 0x30 0x27 0x46
+
+# CHECK: c.un.s $f6,$f7
+0x31 0x30 0x07 0x46
+
+# CHECK: ceil.w.d $f12,$f14
+0x8e 0x38 0x20 0x46
+
+# CHECK: ceil.w.s $f6,$f7
+0x8e 0x38 0x00 0x46
+
+# CHECK: cfc1 a2,$7
+0x00 0x38 0x46 0x44
+
+# CHECK: clo a2,a3
+0x21 0x30 0xe6 0x70
+
+# CHECK: clz a2,a3
+0x20 0x30 0xe6 0x70
+
+# CHECK: ctc1 a2,$7
+0x00 0x38 0xc6 0x44
+
+# CHECK: cvt.d.s $f6,$f7
+0xa1 0x39 0x00 0x46
+
+# CHECK: cvt.d.w $f12,$f14
+0xa1 0x39 0x80 0x46
+
+# CHECK: cvt.l.d $f12,$f14
+0xa5 0x39 0x20 0x46
+
+# CHECK: cvt.l.s $f6,$f7
+0xa5 0x39 0x00 0x46
+
+# CHECK: cvt.s.d $f12,$f14
+0xa0 0x39 0x20 0x46
+
+# CHECK: cvt.s.w $f6,$f7
+0xa0 0x39 0x80 0x46
+
+# CHECK: cvt.w.d $f12,$f14
+0xa4 0x39 0x20 0x46
+
+# CHECK: cvt.w.s $f6,$f7
+0xa4 0x39 0x00 0x46
+
+# CHECK: floor.w.d $f12,$f14
+0x8f 0x39 0x20 0x46
+
+# CHECK: floor.w.s $f6,$f7
+0x8f 0x39 0x00 0x46
+
+# CHECK: j 00000530
+0x4c 0x01 0x00 0x08
+
+# CHECK: jal 00000530
+0x4c 0x01 0x00 0x0c
+
+# CHECK: jalr a2,a3
+0x09 0xf8 0xe0 0x00
+
+# CHECK: jr a3
+0x08 0x00 0xe0 0x00
+
+# CHECK: lb  a0,9158(a1)
+0xc6 0x23 0xa4 0x80
+
+# CHECK: lbu a0,6(a1)
+0x06 0x00 0xa4 0x90
+
+# CHECK: ldc1  $f9,9158(a3)
+0xc6 0x23 0xe9 0xd4
+
+# CHECK: lh  a0,12(a1)
+0x0c 0x00 0xa4 0x84
+
+# CHECK: lh  a0,12(a1)
+0x0c 0x00 0xa4 0x84
+
+# CHECK: li  v1,17767
+0x67 0x45 0x03 0x24
+
+# CHECK: ll  t1,9158(a3)
+0xc6 0x23 0xe9 0xc0
+
+# CHECK: lui a2,0x4567
+0x67 0x45 0x06 0x3c
+
+# CHECK: lw  a0,24(a1)
+0x18 0x00 0xa4 0x8c
+
+# CHECK lw at,-18316(v0)
+0x74 0xb8 0x41 0x8c
+
+# CHECK: lwc1  $f9,9158(a3)
+0xc6 0x23 0xe9 0xc4
+
+# CHECK: madd  a2,a3
+0x00 0x00 0xc7 0x70
+
+# CHECK: maddu a2,a3
+0x01 0x00 0xc7 0x70
+
+# CHECK: mfc1  a2,$f7
+0x00 0x38 0x06 0x44
+
+# CHECK: mfhi  a1
+0x10 0x28 0x00 0x00
+
+# CHECK: mflo  a1
+0x12 0x28 0x00 0x00
+
+# CHECK: mov.d $f12,$f14
+0x86 0x39 0x20 0x46
+
+# CHECK: mov.s $f6,$f7
+0x86 0x39 0x00 0x46
+
+# CHECK: move  a2,a1
+0x21 0x30 0xa0 0x00
+
+# CHECK: msub  a2,a3
+0x04 0x00 0xc7 0x70
+
+# CHECK: msubu a2,a3
+0x05 0x00 0xc7 0x70
+
+# CHECK: mtc1  a2,$f7
+0x00 0x38 0x86 0x44
+
+# CHECK: mthi  a3
+0x11 0x00 0xe0 0x00
+
+# CHECK: mtlo  a3
+0x13 0x00 0xe0 0x00
+
+# CHECK: mul.d $f9,$f12,$f14
+0x42 0x32 0x27 0x46
+
+# CHECK: mul.s $f9,$f6,$f7
+0x42 0x32 0x07 0x46
+
+# CHECK: mul t1,a2,a3
+0x02 0x48 0xc7 0x70
+
+# CHECK: mult  v1,a1
+0x18 0x00 0x65 0x00
+
+# CHECK: multu v1,a1
+0x19 0x00 0x65 0x00
+
+# CHECK: neg.d $f12,$f14
+0x87 0x39 0x20 0x46
+
+# CHECK: neg.s $f6,$f7
+0x87 0x39 0x00 0x46
+
+# CHECK: neg v1,a1
+0x22 0x18 0x05 0x00
+
+# CHECK: nop
+0x00 0x00 0x00 0x00
+
+# CHECK: nor t1,a2,a3
+0x27 0x48 0xc7 0x00
+
+# CHECK: not v1,a1
+0x27 0x18 0xa0 0x00
+
+# CHECK: or  v1,v1,a1
+0x25 0x18 0x65 0x00
+
+# CHECK: ori t1,a2,0x4567
+0x67 0x45 0xc9 0x34
+
+# CHECK: rdhwr a2,$29
+0x3b 0xe8 0x06 0x7c
+
+# CHECK: round.w.d $f12,$f14
+0x8c 0x39 0x20 0x46
+
+# CHECK: round.w.s $f6,$f7
+0x8c 0x39 0x00 0x46
+
+# CHECK: sb  a0,9158(a1)
+0xc6 0x23 0xa4 0xa0
+
+# CHECK: sb  a0,6(a1)
+0x06 0x00 0xa4 0xa0
+
+# CHECK: sc  t1,9158(a3)
+0xc6 0x23 0xe9 0xe0
+
+# CHECK: sdc1  $f9,9158(a3)
+0xc6 0x23 0xe9 0xf4
+
+# CHECK: sh  a0,9158(a1)
+0xc6 0x23 0xa4 0xa4
+
+# CHECK: sll a0,v1,0x7
+0xc0 0x21 0x03 0x00
+
+# CHECK: sllv  v0,v1,a1
+0x04 0x10 0xa3 0x00
+
+# CHECK: slt v1,v1,a1
+0x2a 0x18 0x65 0x00
+
+# CHECK: slti  v1,v1,103
+0x67 0x00 0x63 0x28
+
+# CHECK: sltiu v1,v1,103
+0x67 0x00 0x63 0x2c
+
+# CHECK: sltu  v1,v1,a1
+0x2b 0x18 0x65 0x00
+
+# CHECK: sqrt.d  $f12,$f14
+0x84 0x39 0x20 0x46
+
+# CHECK: sqrt.s  $f6,$f7
+0x84 0x39 0x00 0x46
+
+# CHECK: sra a0,v1,0x7
+0xc3 0x21 0x03 0x00
+
+# CHECK: sra a0,v1,0x7
+0xc3 0x21 0x03 0x00
+
+# CHECK: srav  v0,v1,a1
+0x07 0x10 0xa3 0x00
+
+# CHECK: srl a0,v1,0x7
+0xc2 0x21 0x03 0x00
+
+# CHECK: srlv  v0,v1,a1
+0x06 0x10 0xa3 0x00
+
+# CHECK: sub.d $f9,$f12,$f14
+0x41 0x32 0x27 0x46
+
+# CHECK: sub.s $f9,$f6,$f7
+0x41 0x32 0x07 0x46
+
+# CHECK: sub t1,a2,a3
+0x22 0x48 0xc7 0x00
+
+# CHECK: subu  a0,v1,a1
+0x23 0x20 0x65 0x00
+
+# CHECK: sw  a0,24(a1)
+0x18 0x00 0xa4 0xac
+
+# CHECK: swc1  $f9,9158(a3)
+0xc6 0x23 0xe9 0xe4
+
+# CHECK: sync  0x7
+0xcf 0x01 0x00 0x00
+
+# CHECK: trunc.w.d $f12,$f14
+0x8d 0x39 0x20 0x46
+
+# CHECK: trunc.w.s $f6,$f7
+0x8d 0x39 0x00 0x46
+
+# CHECK: xor v1,v1,a1
+0x26 0x18 0x65 0x00
+
+# CHECK: xori  t1,a2,0x4567
+0x67 0x45 0xc9 0x38
diff --git a/test/MC/Disassembler/Mips/mips32r2.txt b/test/MC/Disassembler/Mips/mips32r2.txt
new file mode 100644
index 0000000..295ffd0
--- /dev/null
+++ b/test/MC/Disassembler/Mips/mips32r2.txt
@@ -0,0 +1,439 @@
+# RUN: llvm-mc --disassemble %s -triple=mips-unknown-linux -mcpu=mips32r2
+
+# CHECK: abs.d $f12,$f14
+0x46 0x20 0x39 0x85
+
+# CHECK: abs.s $f6,$f7
+0x46 0x00 0x39 0x85
+
+# CHECK: add t1,a2,a3
+0x00 0xc7 0x48 0x20
+
+# CHECK: add.d $f18,$f12,$f14
+0x46 0x27 0x32 0x40
+
+# CHECK: add.s $f9,$f6,$f7
+0x46 0x07 0x32 0x40
+
+# CHECK: addi t1,a2,17767
+0x20 0xc9 0x45 0x67
+
+# CHECK: addiu t1,a2,-15001
+0x24 0xc9 0xc5 0x67
+
+# CHECK: addu t1,a2,a3
+0x00 0xc7 0x48 0x21
+
+# CHECK: and t1,a2,a3
+0x00 0xc7 0x48 0x24
+
+# CHECK: andi t1,a2,0x4567
+0x30 0xc9 0x45 0x67
+
+# CHECK: b 00000534
+0x10 0x00 0x01 0x4c
+
+# CHECK: bal 00000534
+0x04 0x11 0x01 0x4c
+
+# CHECK: bc1f 00000534
+0x45 0x00 0x01 0x4c
+
+# CHECK: bc1t 00000534
+0x45 0x01 0x01 0x4c
+
+# CHECK: beq t1,a2,00000534
+0x11 0x26 0x01 0x4c
+
+# CHECK: bgez a2,00000534
+0x04 0xc1 0x01 0x4c
+
+# CHECK: bgezal a2,00000534
+0x04 0xd1 0x01 0x4c
+
+# CHECK: bgtz a2,00000534
+0x1c 0xc0 0x01 0x4c
+
+# CHECK: blez a2,00000534
+0x18 0xc0 0x01 0x4c
+
+# CHECK: bne t1,a2,00000534
+0x15 0x26 0x01 0x4c
+
+# CHECK: c.eq.d $f12,$f14
+0x46 0x27 0x30 0x32
+
+# CHECK: c.eq.s $f6,$f7
+0x46 0x07 0x30 0x32
+
+# CHECK: c.f.d $f12,$f14
+0x46 0x27 0x30 0x30
+
+# CHECK: c.f.s $f6,$f7
+0x46 0x07 0x30 0x30
+
+# CHECK: c.le.d $f12,$f14
+0x46 0x27 0x30 0x3e
+
+# CHECK: c.le.s $f6,$f7
+0x46 0x07 0x30 0x3e
+
+# CHECK: c.lt.d $f12,$f14
+0x46 0x27 0x30 0x3c
+
+# CHECK: c.lt.s $f6,$f7
+0x46 0x07 0x30 0x3c
+
+# CHECK: c.nge.d $f12,$f14
+0x46 0x27 0x30 0x3d
+
+# CHECK: c.nge.s $f6,$f7
+0x46 0x07 0x30 0x3d
+
+# CHECK: c.ngl.d $f12,$f14
+0x46 0x27 0x30 0x3b
+
+# CHECK: c.ngl.s $f6,$f7
+0x46 0x07 0x30 0x3b
+
+# CHECK: c.ngle.d $f12,$f14
+0x46 0x27 0x30 0x39
+
+# CHECK: c.ngle.s $f6,$f7
+0x46 0x07 0x30 0x39
+
+# CHECK: c.ngt.d $f12,$f14
+0x46 0x27 0x30 0x3f
+
+# CHECK: c.ngt.s $f6,$f7
+0x46 0x07 0x30 0x3f
+
+# CHECK: c.ole.d $f12,$f14
+0x46 0x27 0x30 0x36
+
+# CHECK: c.ole.s $f6,$f7
+0x46 0x07 0x30 0x36
+
+# CHECK: c.olt.d $f12,$f14
+0x46 0x27 0x30 0x34
+
+# CHECK: c.olt.s $f6,$f7
+0x46 0x07 0x30 0x34
+
+# CHECK: c.seq.d $f12,$f14
+0x46 0x27 0x30 0x3a
+
+# CHECK: c.seq.s $f6,$f7
+0x46 0x07 0x30 0x3a
+
+# CHECK: c.sf.d $f12,$f14
+0x46 0x27 0x30 0x38
+
+# CHECK: c.sf.s $f6,$f7
+0x46 0x07 0x30 0x38
+
+# CHECK: c.ueq.d $f12,$f14
+0x46 0x27 0x30 0x33
+
+# CHECK: c.ueq.s $f28,$f18
+0x46 0x12 0xe0 0x33
+
+# CHECK: c.ule.d $f12,$f14
+0x46 0x27 0x30 0x37
+
+# CHECK: c.ule.s $f6,$f7
+0x46 0x07 0x30 0x37
+
+# CHECK: c.ult.d $f12,$f14
+0x46 0x27 0x30 0x35
+
+# CHECK: c.ult.s $f6,$f7
+0x46 0x07 0x30 0x35
+
+# CHECK: c.un.d $f12,$f14
+0x46 0x27 0x30 0x31
+
+# CHECK: c.un.s $f6,$f7
+0x46 0x07 0x30 0x31
+
+# CHECK: ceil.w.d $f12,$f14
+0x46 0x20 0x39 0x8e
+
+# CHECK: ceil.w.s $f6,$f7
+0x46 0x00 0x39 0x8e
+
+# CHECK: cfc1 a2,$7
+0x44 0x46 0x38 0x00
+
+# CHECK: clo a2,a3
+0x70 0xe6 0x30 0x21
+
+# CHECK: clz a2,a3
+0x70 0xe6 0x30 0x20
+
+# CHECK: ctc1 a2,$7
+0x44 0xc6 0x38 0x00
+
+# CHECK: cvt.d.s $f6,$f7
+0x46 0x00 0x38 0xa1
+
+# CHECK: cvt.d.w $f12,$f14
+0x46 0x80 0x38 0xa1
+
+# CHECK: cvt.l.d $f12,$f14
+0x46 0x20 0x39 0xa5
+
+# CHECK: cvt.l.s $f6,$f7
+0x46 0x00 0x39 0xa5
+
+# CHECK: cvt.s.d $f12,$f14
+0x46 0x20 0x39 0xa0
+
+# CHECK: cvt.s.w $f6,$f7
+0x46 0x80 0x39 0xa0
+
+# CHECK: cvt.w.d $f12,$f14
+0x46 0x20 0x39 0xa4
+
+# CHECK: cvt.w.s $f6,$f7
+0x46 0x00 0x39 0xa4
+
+# CHECK: floor.w.d $f12,$f14
+0x46 0x20 0x39 0x8f
+
+# CHECK: floor.w.s $f6,$f7
+0x46 0x00 0x39 0x8f
+
+# CHECK: ins s3,t1,0x6,0x7
+0x7d 0x33 0x61 0x84
+
+# CHECK: j 00000530
+0x08 0x00 0x01 0x4c
+
+# CHECK: jal 00000530
+0x0c 0x00 0x01 0x4c
+
+# CHECK: jalr a2,a3
+0x00 0xe0 0xf8 0x09
+
+# CHECK: jr a3
+0x00 0xe0 0x00 0x08
+
+# CHECK: lb  a0,9158(a1)
+0x80 0xa4 0x23 0xc6
+
+# CHECK: lbu a0,6(a1)
+0x90 0xa4 0x00 0x06
+
+# CHECK: ldc1  $f9,9158(a3)
+0xd4 0xe9 0x23 0xc6
+
+# CHECK: lh  a0,12(a1)
+0x84 0xa4 0x00 0x0c
+
+# CHECK: lh  a0,12(a1)
+0x84 0xa4 0x00 0x0c
+
+# CHECK: li  v1,17767
+0x24 0x03 0x45 0x67
+
+# CHECK: ll  t1,9158(a3)
+0xc0 0xe9 0x23 0xc6
+
+# CHECK: lui a2,0x4567
+0x3c 0x06 0x45 0x67
+
+# CHECK: lw  a0,24(a1)
+0x8c 0xa4 0x00 0x18
+
+# CHECK: lwc1  $f9,9158(a3)
+0xc4 0xe9 0x23 0xc6
+
+# CHECK: madd  a2,a3
+0x70 0xc7 0x00 0x00
+
+# CHECK: maddu a2,a3
+0x70 0xc7 0x00 0x01
+
+# CHECK: mfc1  a2,$f7
+0x44 0x06 0x38 0x00
+
+# CHECK: mfhi  a1
+0x00 0x00 0x28 0x10
+
+# CHECK: mflo  a1
+0x00 0x00 0x28 0x12
+
+# CHECK: mov.d $f6,$f7
+0x46 0x20 0x39 0x86
+
+# CHECK: mov.s $f6,$f7
+0x46 0x00 0x39 0x86
+
+# CHECK: move  a2,a1
+0x00 0xa0 0x30 0x21
+
+# CHECK: msub  a2,a3
+0x70 0xc7 0x00 0x04
+
+# CHECK: msubu a2,a3
+0x70 0xc7 0x00 0x05
+
+# CHECK: mtc1  a2,$f7
+0x44 0x86 0x38 0x00
+
+# CHECK: mthi  a3
+0x00 0xe0 0x00 0x11
+
+# CHECK: mtlo  a3
+0x00 0xe0 0x00 0x13
+
+# CHECK: mul.d $f9,$f12,$f14
+0x46 0x27 0x32 0x42
+
+# CHECK: mul.s $f9,$f6,$f7
+0x46 0x07 0x32 0x42
+
+# CHECK: mul t1,a2,a3
+0x70 0xc7 0x48 0x02
+
+# CHECK: mult  v1,a1
+0x00 0x65 0x00 0x18
+
+# CHECK: multu v1,a1
+0x00 0x65 0x00 0x19
+
+# CHECK: neg.d $f12,$f14
+0x46 0x20 0x39 0x87
+
+# CHECK: neg.s $f6,$f7
+0x46 0x00 0x39 0x87
+
+# CHECK: neg v1,a1
+0x00 0x05 0x18 0x22
+
+# CHECK: nop
+0x00 0x00 0x00 0x00
+
+# CHECK: nor t1,a2,a3
+0x00 0xc7 0x48 0x27
+
+# CHECK: not v1,a1
+0x00 0xa0 0x18 0x27
+
+# CHECK: or  v1,v1,a1
+0x00 0x65 0x18 0x25
+
+# CHECK: ori t1,a2,0x4567
+0x34 0xc9 0x45 0x67
+
+# CHECK: rdhwr a2,$29
+0x7c 0x06 0xe8 0x3b
+
+# CHECK: ror t1,a2,0x7
+0x00 0x26 0x49 0xc2
+
+# CHECK: rorv  t1,a2,a3
+0x00 0xe6 0x48 0x46
+
+# CHECK: round.w.d $f12,$f14
+0x46 0x20 0x39 0x8c
+
+# CHECK: round.w.s $f6,$f7
+0x46 0x00 0x39 0x8c
+
+# CHECK: sb  a0,9158(a1)
+0xa0 0xa4 0x23 0xc6
+
+# CHECK: sb  a0,6(a1)
+0xa0 0xa4 0x00 0x06
+
+# CHECK: sc  t1,9158(a3)
+0xe0 0xe9 0x23 0xc6
+
+# CHECK: sdc1  $f9,9158(a3)
+0xf4 0xe9 0x23 0xc6
+
+# CHECK: seb a2,a3
+0x7c 0x07 0x34 0x20
+
+# CHECK: seh a2,a3
+0x7c 0x07 0x36 0x20
+
+# CHECK: sh  a0,9158(a1)
+0xa4 0xa4 0x23 0xc6
+
+# CHECK: sll a0,v1,0x7
+0x00 0x03 0x21 0xc0
+
+# CHECK: sllv  v0,v1,a1
+0x00 0xa3 0x10 0x04
+
+# CHECK: slt v1,v1,a1
+0x00 0x65 0x18 0x2a
+
+# CHECK: slti  v1,v1,103
+0x28 0x63 0x00 0x67
+
+# CHECK: sltiu v1,v1,103
+0x2c 0x63 0x00 0x67
+
+# CHECK: sltu  v1,v1,a1
+0x00 0x65 0x18 0x2b
+
+# CHECK: sqrt.d  $f12,$f14
+0x46 0x20 0x39 0x84
+
+# CHECK: sqrt.s  $f6,$f7
+0x46 0x00 0x39 0x84
+
+# CHECK: sra a0,v1,0x7
+0x00 0x03 0x21 0xc3
+
+# CHECK: sra a0,v1,0x7
+0x00 0x03 0x21 0xc3
+
+# CHECK: srav  v0,v1,a1
+0x00 0xa3 0x10 0x07
+
+# CHECK: srl a0,v1,0x7
+0x00 0x03 0x21 0xc2
+
+# CHECK: srlv  v0,v1,a1
+0x00 0xa3 0x10 0x06
+
+# CHECK: sub.d $f9,$f12,$f14
+0x46 0x27 0x32 0x41
+
+# CHECK: sub.s $f9,$f6,$f7
+0x46 0x07 0x32 0x41
+
+# CHECK: sub t1,a2,a3
+0x00 0xc7 0x48 0x22
+
+# CHECK: subu  a0,v1,a1
+0x00 0x65 0x20 0x23
+
+# CHECK: sw  a0,24(a1)
+0xac 0xa4 0x00 0x18
+
+# CHECK: swc1  $f9,9158(a3)
+0xe4 0xe9 0x23 0xc6
+
+# CHECK: sync  0x7
+0x00 0x00 0x01 0xcf
+
+# CHECK: trunc.w.d $f12,$f14
+0x46 0x20 0x39 0x8d
+
+# CHECK: trunc.w.s $f6,$f7
+0x46 0x00 0x39 0x8d
+
+# CHECK: wsbh  a2,a3
+0x7c 0x07 0x30 0xa0
+
+# CHECK: xor v1,v1,a1
+0x00 0x65 0x18 0x26
+
+# CHECK: xori  t1,a2,0x4567
+0x38 0xc9 0x45 0x67
diff --git a/test/MC/Disassembler/Mips/mips32r2_le.txt b/test/MC/Disassembler/Mips/mips32r2_le.txt
new file mode 100644
index 0000000..6d8be79
--- /dev/null
+++ b/test/MC/Disassembler/Mips/mips32r2_le.txt
@@ -0,0 +1,442 @@
+# RUN: llvm-mc --disassemble %s -triple=mipsel-unknown-linux -mcpu=mips32r2
+
+# CHECK: abs.d $f12,$f14
+0x85 0x39 0x20 0x46
+
+# CHECK: abs.s $f6,$f7
+0x85 0x39 0x00 0x46
+
+# CHECK: add t1,a2,a3
+0x20 0x48 0xc7 0x00
+
+# CHECK: add.d $f18,$f12,$f14
+0x40 0x32 0x27 0x46
+
+# CHECK: add.s $f9,$f6,$f7
+0x40 0x32 0x07 0x46
+
+# CHECK: addi t1,a2,17767
+0x67 0x45 0xc9 0x20
+
+# CHECK: addiu t1,a2,-15001
+0x67 0xc5 0xc9 0x24
+
+# CHECK: addu t1,a2,a3
+0x21 0x48 0xc7 0x00
+
+# CHECK: and t1,a2,a3
+0x24 0x48 0xc7 0x00
+
+# CHECK: andi t1,a2,0x4567
+0x67 0x45 0xc9 0x30
+
+# CHECK: b 00000534
+0x4c 0x01 0x00 0x10
+
+# CHECK: bal 00000534
+0x4c 0x01 0x11 0x04
+
+# CHECK: bc1f 00000534
+0x4c 0x01 0x00 0x45
+
+# CHECK: bc1t 00000534
+0x4c 0x01 0x01 0x45
+
+# CHECK: beq t1,a2,00000534
+0x4c 0x01 0x26 0x11
+
+# CHECK: bgez a2,00000534
+0x4c 0x01 0xc1 0x04
+
+# CHECK: bgezal a2,00000534
+0x4c 0x01 0xd1 0x04
+
+# CHECK: bgtz a2,00000534
+0x4c 0x01 0xc0 0x1c
+
+# CHECK: blez a2,00000534
+0x4c 0x01 0xc0 0x18
+
+# CHECK: bne t1,a2,00000534
+0x4c 0x01 0x26 0x15
+
+# CHECK: c.eq.d $f12,$f14
+0x32 0x30 0x27 0x46
+
+# CHECK: c.eq.s $f6,$f7
+0x32 0x30 0x07 0x46
+
+# CHECK: c.f.d $f12,$f14
+0x30 0x30 0x27 0x46
+
+# CHECK: c.f.s $f6,$f7
+0x30 0x30 0x07 0x46
+
+# CHECK: c.le.d $f12,$f14
+0x3e 0x30 0x27 0x46
+
+# CHECK: c.le.s $f6,$f7
+0x3e 0x30 0x07 0x46
+
+# CHECK: c.lt.d $f12,$f14
+0x3c 0x30 0x27 0x46
+
+# CHECK: c.lt.s $f6,$f7
+0x3c 0x30 0x07 0x46
+
+# CHECK: c.nge.d $f12,$f14
+0x3d 0x30 0x27 0x46
+
+# CHECK: c.nge.s $f6,$f7
+0x3d 0x30 0x07 0x46
+
+# CHECK: c.ngl.d $f12,$f14
+0x3b 0x30 0x27 0x46
+
+# CHECK: c.ngl.s $f6,$f7
+0x3b 0x30 0x07 0x46
+
+# CHECK: c.ngle.d $f12,$f14
+0x39 0x30 0x27 0x46
+
+# CHECK: c.ngle.s $f6,$f7
+0x39 0x30 0x07 0x46
+
+# CHECK: c.ngt.d $f12,$f14
+0x3f 0x30 0x27 0x46
+
+# CHECK: c.ngt.s $f6,$f7
+0x3f 0x30 0x07 0x46
+
+# CHECK: c.ole.d $f12,$f14
+0x36 0x30 0x27 0x46
+
+# CHECK: c.ole.s $f6,$f7
+0x36 0x30 0x07 0x46
+
+# CHECK: c.olt.d $f12,$f14
+0x34 0x30 0x27 0x46
+
+# CHECK: c.olt.s $f6,$f7
+0x34 0x30 0x07 0x46
+
+# CHECK: c.seq.d $f12,$f14
+0x3a 0x30 0x27 0x46
+
+# CHECK: c.seq.s $f6,$f7
+0x3a 0x30 0x07 0x46
+
+# CHECK: c.sf.d $f12,$f14
+0x38 0x30 0x27 0x46
+
+# CHECK: c.sf.s $f6,$f7
+0x38 0x30 0x07 0x46
+
+# CHECK: c.ueq.d $f12,$f14
+0x33 0x30 0x27 0x46
+
+# CHECK: c.ueq.s $f28,$f18
+0x33 0xe0 0x12 0x46
+
+# CHECK: c.ule.d $f12,$f14
+0x37 0x30 0x27 0x46
+
+# CHECK: c.ule.s $f6,$f7
+0x37 0x30 0x07 0x46
+
+# CHECK: c.ult.d $f12,$f14
+0x35 0x30 0x27 0x46
+
+# CHECK: c.ult.s $f6,$f7
+0x35 0x30 0x07 0x46
+
+# CHECK: c.un.d $f12,$f14
+0x31 0x30 0x27 0x46
+
+# CHECK: c.un.s $f6,$f7
+0x31 0x30 0x07 0x46
+
+# CHECK: ceil.w.d $f12,$f14
+0x8e 0x38 0x20 0x46
+
+# CHECK: ceil.w.s $f6,$f7
+0x8e 0x38 0x00 0x46
+
+# CHECK: cfc1 a2,$7
+0x00 0x38 0x46 0x44
+
+# CHECK: clo a2,a3
+0x21 0x30 0xe6 0x70
+
+# CHECK: clz a2,a3
+0x20 0x30 0xe6 0x70
+
+# CHECK: ctc1 a2,$7
+0x00 0x38 0xc6 0x44
+
+# CHECK: cvt.d.s $f6,$f7
+0xa1 0x39 0x00 0x46
+
+# CHECK: cvt.d.w $f12,$f14
+0xa1 0x39 0x80 0x46
+
+# CHECK: cvt.l.d $f12,$f14
+0xa5 0x39 0x20 0x46
+
+# CHECK: cvt.l.s $f6,$f7
+0xa5 0x39 0x00 0x46
+
+# CHECK: cvt.s.d $f12,$f14
+0xa0 0x39 0x20 0x46
+
+# CHECK: cvt.s.w $f6,$f7
+0xa0 0x39 0x80 0x46
+
+# CHECK: cvt.w.d $f12,$f14
+0xa4 0x39 0x20 0x46
+
+# CHECK: cvt.w.s $f6,$f7
+0xa4 0x39 0x00 0x46
+
+# CHECK: floor.w.d $f12,$f14
+0x8f 0x39 0x20 0x46
+
+# CHECK: floor.w.s $f6,$f7
+0x8f 0x39 0x00 0x46
+
+# CHECK: ins s3,t1,0x6,0x7
+0x84 0x61 0x33 0x7d
+
+# CHECK: j 00000530
+0x4c 0x01 0x00 0x08
+
+# CHECK: jal 00000530
+0x4c 0x01 0x00 0x0c
+
+# CHECK: jalr a2,a3
+0x09 0xf8 0xe0 0x00
+
+# CHECK: jr a3
+0x08 0x00 0xe0 0x00
+
+# CHECK: lb  a0,9158(a1)
+0xc6 0x23 0xa4 0x80
+
+# CHECK: lbu a0,6(a1)
+0x06 0x00 0xa4 0x90
+
+# CHECK: ldc1  $f9,9158(a3)
+0xc6 0x23 0xe9 0xd4
+
+# CHECK: lh  a0,12(a1)
+0x0c 0x00 0xa4 0x84
+
+# CHECK: lh  a0,12(a1)
+0x0c 0x00 0xa4 0x84
+
+# CHECK: li  v1,17767
+0x67 0x45 0x03 0x24
+
+# CHECK: ll  t1,9158(a3)
+0xc6 0x23 0xe9 0xc0
+
+# CHECK: lui a2,0x4567
+0x67 0x45 0x06 0x3c
+
+# CHECK: lw  a0,24(a1)
+0x18 0x00 0xa4 0x8c
+
+# CHECK lw at,-18316(v0)
+0x74 0xb8 0x41 0x8c
+
+# CHECK: lwc1  $f9,9158(a3)
+0xc6 0x23 0xe9 0xc4
+
+# CHECK: madd  a2,a3
+0x00 0x00 0xc7 0x70
+
+# CHECK: maddu a2,a3
+0x01 0x00 0xc7 0x70
+
+# CHECK: mfc1  a2,$f7
+0x00 0x38 0x06 0x44
+
+# CHECK: mfhi  a1
+0x10 0x28 0x00 0x00
+
+# CHECK: mflo  a1
+0x12 0x28 0x00 0x00
+
+# CHECK: mov.d $f12,$f14
+0x86 0x39 0x20 0x46
+
+# CHECK: mov.s $f6,$f7
+0x86 0x39 0x00 0x46
+
+# CHECK: move  a2,a1
+0x21 0x30 0xa0 0x00
+
+# CHECK: msub  a2,a3
+0x04 0x00 0xc7 0x70
+
+# CHECK: msubu a2,a3
+0x05 0x00 0xc7 0x70
+
+# CHECK: mtc1  a2,$f7
+0x00 0x38 0x86 0x44
+
+# CHECK: mthi  a3
+0x11 0x00 0xe0 0x00
+
+# CHECK: mtlo  a3
+0x13 0x00 0xe0 0x00
+
+# CHECK: mul.d $f9,$f12,$f14
+0x42 0x32 0x27 0x46
+
+# CHECK: mul.s $f9,$f6,$f7
+0x42 0x32 0x07 0x46
+
+# CHECK: mul t1,a2,a3
+0x02 0x48 0xc7 0x70
+
+# CHECK: mult  v1,a1
+0x18 0x00 0x65 0x00
+
+# CHECK: multu v1,a1
+0x19 0x00 0x65 0x00
+
+# CHECK: neg.d $f12,$f14
+0x87 0x39 0x20 0x46
+
+# CHECK: neg.s $f6,$f7
+0x87 0x39 0x00 0x46
+
+# CHECK: neg v1,a1
+0x22 0x18 0x05 0x00
+
+# CHECK: nop
+0x00 0x00 0x00 0x00
+
+# CHECK: nor t1,a2,a3
+0x27 0x48 0xc7 0x00
+
+# CHECK: not v1,a1
+0x27 0x18 0xa0 0x00
+
+# CHECK: or  v1,v1,a1
+0x25 0x18 0x65 0x00
+
+# CHECK: ori t1,a2,0x4567
+0x67 0x45 0xc9 0x34
+
+# CHECK: rdhwr a2,$29
+0x3b 0xe8 0x06 0x7c
+
+# CHECK: ror t1,a2,0x7
+0xc2 0x49 0x26 0x00
+
+# CHECK: rorv  t1,a2,a3
+0x46 0x48 0xe6 0x00
+
+# CHECK: round.w.d $f12,$f14
+0x8c 0x39 0x20 0x46
+
+# CHECK: round.w.s $f6,$f7
+0x8c 0x39 0x00 0x46
+
+# CHECK: sb  a0,9158(a1)
+0xc6 0x23 0xa4 0xa0
+
+# CHECK: sb  a0,6(a1)
+0x06 0x00 0xa4 0xa0
+
+# CHECK: sc  t1,9158(a3)
+0xc6 0x23 0xe9 0xe0
+
+# CHECK: sdc1  $f9,9158(a3)
+0xc6 0x23 0xe9 0xf4
+
+# CHECK: seb a2,a3
+0x20 0x34 0x07 0x7c
+
+# CHECK: seh a2,a3
+0x20 0x36 0x07 0x7c
+
+# CHECK: sh  a0,9158(a1)
+0xc6 0x23 0xa4 0xa4
+
+# CHECK: sll a0,v1,0x7
+0xc0 0x21 0x03 0x00
+
+# CHECK: sllv  v0,v1,a1
+0x04 0x10 0xa3 0x00
+
+# CHECK: slt v1,v1,a1
+0x2a 0x18 0x65 0x00
+
+# CHECK: slti  v1,v1,103
+0x67 0x00 0x63 0x28
+
+# CHECK: sltiu v1,v1,103
+0x67 0x00 0x63 0x2c
+
+# CHECK: sltu  v1,v1,a1
+0x2b 0x18 0x65 0x00
+
+# CHECK: sqrt.d  $f12,$f14
+0x84 0x39 0x20 0x46
+
+# CHECK: sqrt.s  $f6,$f7
+0x84 0x39 0x00 0x46
+
+# CHECK: sra a0,v1,0x7
+0xc3 0x21 0x03 0x00
+
+# CHECK: sra a0,v1,0x7
+0xc3 0x21 0x03 0x00
+
+# CHECK: srav  v0,v1,a1
+0x07 0x10 0xa3 0x00
+
+# CHECK: srl a0,v1,0x7
+0xc2 0x21 0x03 0x00
+
+# CHECK: srlv  v0,v1,a1
+0x06 0x10 0xa3 0x00
+
+# CHECK: sub.d $f9,$f12,$f14
+0x41 0x32 0x27 0x46
+
+# CHECK: sub.s $f9,$f6,$f7
+0x41 0x32 0x07 0x46
+
+# CHECK: sub t1,a2,a3
+0x22 0x48 0xc7 0x00
+
+# CHECK: subu  a0,v1,a1
+0x23 0x20 0x65 0x00
+
+# CHECK: sw  a0,24(a1)
+0x18 0x00 0xa4 0xac
+
+# CHECK: swc1  $f9,9158(a3)
+0xc6 0x23 0xe9 0xe4
+
+# CHECK: sync  0x7
+0xcf 0x01 0x00 0x00
+
+# CHECK: trunc.w.d $f12,$f14
+0x8d 0x39 0x20 0x46
+
+# CHECK: trunc.w.s $f6,$f7
+0x8d 0x39 0x00 0x46
+
+# CHECK: wsbh  a2,a3
+0xa0 0x30 0x07 0x7c
+
+# CHECK: xor v1,v1,a1
+0x26 0x18 0x65 0x00
+
+# CHECK: xori  t1,a2,0x4567
+0x67 0x45 0xc9 0x38
diff --git a/test/MC/Disassembler/Mips/mips64.txt b/test/MC/Disassembler/Mips/mips64.txt
new file mode 100644
index 0000000..1c7447a
--- /dev/null
+++ b/test/MC/Disassembler/Mips/mips64.txt
@@ -0,0 +1,67 @@
+# RUN: llvm-mc --disassemble %s -triple=mips64-unknown-linux

+

+# CHECK: daddiu t3,k0,31949

+0x67 0x4b 0x7c 0xcd

+

+# CHECK: daddu k0,at,t3

+0x00 0x2b 0xd0 0x2d

+

+# CHECK: ddiv zero,k0,s6

+0x03 0x56 0x00 0x1e

+

+# CHECK: ddivu zero,t1,t8

+0x01 0x38 0x00 0x1f

+

+# CHECK: dmfc1 v0,$f14

+0x44 0x22 0x70 0x00

+

+# CHECK: dmtc1 s7,$f5

+0x44 0xb7 0x28 0x00

+

+# CHECK: dmult t3,k0

+0x01 0x7a 0x00 0x1c

+

+# CHECK: dmultu s7,t5

+0x02 0xed 0x00 0x1d

+

+# CHECK: dsll v1,t8,0x11

+0x00 0x18 0x1c 0x78

+

+# CHECK: dsllv gp,k1,t8

+0x03 0x1b 0xe0 0x14

+

+# CHECK: dsra at,at,0x1e

+0x00 0x01 0x0f 0xbb

+

+# CHECK: dsrav at,at,s8

+0x03 0xc1 0x08 0x17

+

+# CHECK: dsrl t2,gp,0x18

+0x00 0x1c 0x56 0x3a

+

+# CHECK: dsrlv gp,t2,s7

+0x02 0xea 0xe0 0x16

+

+# CHECK: dsubu gp,k1,t8

+0x03 0x78 0xe0 0x2f

+

+# CHECK: lw k1,-15155(at)

+0x8c 0x3b 0xc4 0xcd

+

+# CHECK: lui at,0x1

+0x3c 0x01 0x00 0x01

+

+# CHECK: lwu v1,-1746(v1)

+0x9c 0x63 0xf9 0x2e

+

+# CHECK: lui ra,0x1

+0x3c 0x1f 0x00 0x01

+

+# CHECK: sw k0,-15159(at)

+0xac 0x3a 0xc4 0xc9

+

+# CHECK: ld k0,3958(zero)

+0xdc 0x1a 0x0f 0x76

+

+# CHECK: sd a2,17767(zero)

+0xfc 0x06 0x45 0x67

diff --git a/test/MC/Disassembler/Mips/mips64_le.txt b/test/MC/Disassembler/Mips/mips64_le.txt
new file mode 100644
index 0000000..dd87522
--- /dev/null
+++ b/test/MC/Disassembler/Mips/mips64_le.txt
@@ -0,0 +1,67 @@
+# RUN: llvm-mc --disassemble %s -triple=mips64el-unknown-linux

+

+# CHECK: daddiu t3,k0,31949

+0xcd 0x7c 0x4b 0x67

+

+# CHECK: daddu k0,at,t3

+0x2d 0xd0 0x2b 0x00

+

+# CHECK: ddiv zero,k0,s6

+0x1e 0x00 0x56 0x03

+

+# CHECK: ddivu zero,t1,t8

+0x1f 0x00 0x38 0x01

+

+# CHECK: dmfc1 v0,$f14

+0x00 0x70 0x22 0x44

+

+# CHECK: dmtc1 s7,$f5

+0x00 0x28 0xb7 0x44

+

+# CHECK: dmult t3,k0

+0x1c 0x00 0x7a 0x01

+

+# CHECK: dmultu s7,t5

+0x1d 0x00 0xed 0x02

+

+# CHECK: dsll v1,t8,0x11

+0x78 0x1c 0x18 0x00

+

+# CHECK: dsllv gp,k1,t8

+0x14 0xe0 0x1b 0x03

+

+# CHECK: dsra at,at,0x1e

+0xbb 0x0f 0x01 0x00

+

+# CHECK: dsrav at,at,s8

+0x17 0x08 0xc1 0x03

+

+# CHECK: dsrl t2,gp,0x18

+0x3a 0x56 0x1c 0x00

+

+# CHECK: dsrlv gp,t2,s7

+0x16 0xe0 0xea 0x02

+

+# CHECK: dsubu gp,k1,t8

+0x2f 0xe0 0x78 0x03

+

+# CHECK: lw k1,-15155(at)

+0xcd 0xc4 0x3b 0x8c

+

+# CHECK: lui at,0x1

+0x01 0x00 0x01 0x3c

+

+# CHECK: lwu v1,-1746(v1)

+0x2e 0xf9 0x63 0x9c

+

+# CHECK: lui ra,0x1

+0x01 0x00 0x1f 0x3c

+

+# CHECK: sw k0,-15159(at)

+0xc9 0xc4 0x3a 0xac

+

+# CHECK: ld k0,3958(zero)

+0x76 0x0f 0x1a 0xdc

+

+# CHECK: sd a2,17767(zero)

+0x67 0x45 0x06 0xfc

diff --git a/test/MC/Disassembler/Mips/mips64r2.txt b/test/MC/Disassembler/Mips/mips64r2.txt
new file mode 100644
index 0000000..26bc94d
--- /dev/null
+++ b/test/MC/Disassembler/Mips/mips64r2.txt
@@ -0,0 +1,91 @@
+# RUN: llvm-mc --disassemble %s -triple=mips64-unknown-linux -mattr +mips64r2

+

+# CHECK: daddiu t3,k0,31949

+0x67 0x4b 0x7c 0xcd

+

+# CHECK: daddu k0,at,t3

+0x00 0x2b 0xd0 0x2d

+

+# CHECK: ddiv zero,k0,s6

+0x03 0x56 0x00 0x1e

+

+# CHECK: ddivu zero,t1,t8

+0x01 0x38 0x00 0x1f

+

+# CHECK: dmfc1 v0,$f14

+0x44 0x22 0x70 0x00

+

+# CHECK: dmtc1 s7,$f5

+0x44 0xb7 0x28 0x00

+

+# CHECK: dmult t3,k0

+0x01 0x7a 0x00 0x1c

+

+# CHECK: dmultu s7,t5

+0x02 0xed 0x00 0x1d

+

+# CHECK: dsll v1,t8,0x11

+0x00 0x18 0x1c 0x78

+

+# CHECK: dsllv gp,k1,t8

+0x03 0x1b 0xe0 0x14

+

+# CHECK: dsra at,at,0x1e

+0x00 0x01 0x0f 0xbb

+

+# CHECK: dsrav at,at,s8

+0x03 0xc1 0x08 0x17

+

+# CHECK: dsrl t2,gp,0x18

+0x00 0x1c 0x56 0x3a

+

+# CHECK: dsrlv gp,t2,s7

+0x02 0xea 0xe0 0x16

+

+# CHECK: dsubu gp,k1,t8

+0x03 0x78 0xe0 0x2f

+

+# CHECK: lw k1,-15155(at)

+0x8c 0x3b 0xc4 0xcd

+

+# CHECK: lui at,0x1

+0x3c 0x01 0x00 0x01

+

+# CHECK: lwu v1,-1746(v1)

+0x9c 0x63 0xf9 0x2e

+

+# CHECK: lui ra,0x1

+0x3c 0x1f 0x00 0x01

+

+# CHECK: sw k0,-15159(at)

+0xac 0x3a 0xc4 0xc9

+

+# CHECK: ld k0,3958(zero)

+0xdc 0x1a 0x0f 0x76

+

+# CHECK: sd a2,17767(zero)

+0xfc 0x06 0x45 0x67

+

+# CHECK: dclo t1,t8

+0x73 0x09 0x48 0x25

+

+# CHECK: dclz k0,t1

+0x71 0x3a 0xd0 0x24

+

+# CHECK: dext a3,gp,0x1d,0x1f

+0x7f 0x87 0xf7 0x43

+

+# CHECK: dins s4,gp,0xf,0x1

+0x7f 0x94 0x7b 0xc7

+

+# CHECK: dsbh a3,gp

+0x7c 0x1c 0x38 0xa4

+

+# CHECK: dshd v1,t6

+0x7c 0x0e 0x19 0x64

+

+# CHECK: drotr s4,k1,0x6

+0x00 0x3b 0xa1 0xba

+

+# CHECK: drotrv t8,s7,a1

+0x00 0xb7 0xc0 0x56

diff --git a/test/MC/Disassembler/Mips/mips64r2_le.txt b/test/MC/Disassembler/Mips/mips64r2_le.txt
new file mode 100644
index 0000000..81a7c66
--- /dev/null
+++ b/test/MC/Disassembler/Mips/mips64r2_le.txt
@@ -0,0 +1,91 @@
+# RUN: llvm-mc --disassemble %s -triple=mips64el-unknown-linux -mattr +mips64r2

+

+# CHECK: daddiu t3,k0,31949

+0xcd 0x7c 0x4b 0x67

+

+# CHECK: daddu k0,at,t3

+0x2d 0xd0 0x2b 0x00

+

+# CHECK: ddiv zero,k0,s6

+0x1e 0x00 0x56 0x03

+

+# CHECK: ddivu zero,t1,t8

+0x1f 0x00 0x38 0x01

+

+# CHECK: dmfc1 v0,$f14

+0x00 0x70 0x22 0x44

+

+# CHECK: dmtc1 s7,$f5

+0x00 0x28 0xb7 0x44

+

+# CHECK: dmult t3,k0

+0x1c 0x00 0x7a 0x01

+

+# CHECK: dmultu s7,t5

+0x1d 0x00 0xed 0x02

+

+# CHECK: dsll v1,t8,0x11

+0x78 0x1c 0x18 0x00

+

+# CHECK: dsllv gp,k1,t8

+0x14 0xe0 0x1b 0x03

+

+# CHECK: dsra at,at,0x1e

+0xbb 0x0f 0x01 0x00

+

+# CHECK: dsrav at,at,s8

+0x17 0x08 0xc1 0x03

+

+# CHECK: dsrl t2,gp,0x18

+0x3a 0x56 0x1c 0x00

+

+# CHECK: dsrlv gp,t2,s7

+0x16 0xe0 0xea 0x02

+

+# CHECK: dsubu gp,k1,t8

+0x2f 0xe0 0x78 0x03

+

+# CHECK: lw k1,-15155(at)

+0xcd 0xc4 0x3b 0x8c

+

+# CHECK: lui at,0x1

+0x01 0x00 0x01 0x3c

+

+# CHECK: lwu v1,-1746(v1)

+0x2e 0xf9 0x63 0x9c

+

+# CHECK: lui ra,0x1

+0x01 0x00 0x1f 0x3c

+

+# CHECK: sw k0,-15159(at)

+0xc9 0xc4 0x3a 0xac

+

+# CHECK: ld k0,3958(zero)

+0x76 0x0f 0x1a 0xdc

+

+# CHECK: sd a2,17767(zero)

+0x67 0x45 0x06 0xfc

+

+# CHECK: dclo t1,t8

+0x25 0x48 0x09 0x73

+

+# CHECK: dclz k0,t1

+0x24 0xd0 0x3a 0x71

+

+# CHECK: dext a3,gp,0x1d,0x1f

+0x43 0xf7 0x87 0x7f

+

+# CHECK: dins s4,gp,0xf,0x1

+0xc7 0x7b 0x94 0x7f

+

+# CHECK: dsbh a3,gp

+0xa4 0x38 0x1c 0x7c

+

+# CHECK: dshd v1,t6

+0x64 0x19 0x0e 0x7c

+

+# CHECK: drotr s4,k1,0x6

+0xba 0xa1 0x3b 0x00

+

+# CHECK: drotrv t8,s7,a1

+0x56 0xc0 0xb7 0x00