Index: llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td
===================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td
+++ llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td
@@ -335,6 +335,7 @@
 }
 
 include "AArch64InstrFormats.td"
+include "SVEInstrFormats.td"
 
 //===----------------------------------------------------------------------===//
 
@@ -6275,3 +6276,4 @@
           (TCRETURNdi texternalsym:$dst, imm:$FPDiff)>;
 
 include "AArch64InstrAtomics.td"
+include "AArch64SVEInstrInfo.td"
Index: llvm/trunk/lib/Target/AArch64/AArch64SVEInstrInfo.td
===================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64SVEInstrInfo.td
+++ llvm/trunk/lib/Target/AArch64/AArch64SVEInstrInfo.td
@@ -0,0 +1,17 @@
+//=- AArch64SVEInstrInfo.td -  AArch64 SVE Instructions -*- tablegen -*-----=//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// AArch64 Scalable Vector Extension (SVE) Instruction definitions.
+//
+//===----------------------------------------------------------------------===//
+
+let Predicates = [HasSVE] in {
+  defm ADD_ZZZ   : sve_int_bin_cons_arit_0<0b000, "add">;
+  defm SUB_ZZZ   : sve_int_bin_cons_arit_0<0b001, "sub">;
+}
Index: llvm/trunk/lib/Target/AArch64/SVEInstrFormats.td
===================================================================
--- llvm/trunk/lib/Target/AArch64/SVEInstrFormats.td
+++ llvm/trunk/lib/Target/AArch64/SVEInstrFormats.td
@@ -0,0 +1,41 @@
+//=-- SVEInstrFormats.td -  AArch64 SVE Instruction classes -*- tablegen -*--=//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// AArch64 Scalable Vector Extension (SVE) Instruction Class Definitions.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// SVE Integer Arithmetic - Unpredicated Group
+//===----------------------------------------------------------------------===//
+
+class sve_int_bin_cons_arit_0<bits<2> sz8_64, bits<3> opc, string asm,
+                              ZPRRegOp zprty>
+: I<(outs zprty:$Zd), (ins zprty:$Zn, zprty:$Zm),
+  asm, "\t$Zd, $Zn, $Zm",
+  "", []>, Sched<[]> {
+  bits<5> Zd;
+  bits<5> Zm;
+  bits<5> Zn;
+  let Inst{31-24} = 0b00000100;
+  let Inst{23-22} = sz8_64;
+  let Inst{21}    = 0b1;
+  let Inst{20-16} = Zm;
+  let Inst{15-13} = 0b000;
+  let Inst{12-10} = opc;
+  let Inst{9-5}   = Zn;
+  let Inst{4-0}   = Zd;
+}
+
+multiclass sve_int_bin_cons_arit_0<bits<3> opc, string asm> {
+  def _B : sve_int_bin_cons_arit_0<0b00, opc, asm, ZPR8>;
+  def _H : sve_int_bin_cons_arit_0<0b01, opc, asm, ZPR16>;
+  def _S : sve_int_bin_cons_arit_0<0b10, opc, asm, ZPR32>;
+  def _D : sve_int_bin_cons_arit_0<0b11, opc, asm, ZPR64>;
+}
Index: llvm/trunk/test/MC/AArch64/SVE/assembler_tests/add.s
===================================================================
--- llvm/trunk/test/MC/AArch64/SVE/assembler_tests/add.s
+++ llvm/trunk/test/MC/AArch64/SVE/assembler_tests/add.s
@@ -0,0 +1,66 @@
+// RUN: llvm-mc -triple=aarch64-none-linux-gnu -show-encoding -mattr=+sve < %s | FileCheck %s
+// RUN: not llvm-mc -triple=aarch64-none-linux-gnu -show-encoding -mattr=-sve 2>&1 < %s | FileCheck --check-prefix=CHECK-ERROR %s
+add     z31.s, z31.s, z31.s  // 00000100-10111111-00000011-11111111
+// CHECK: add     z31.s, z31.s, z31.s // encoding: [0xff,0x03,0xbf,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-10111111-00000011-11111111
+add     z23.d, z13.d, z8.d  // 00000100-11101000-00000001-10110111
+// CHECK: add     z23.d, z13.d, z8.d // encoding: [0xb7,0x01,0xe8,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-11101000-00000001-10110111
+add     z0.s, z0.s, z0.s  // 00000100-10100000-00000000-00000000
+// CHECK: add     z0.s, z0.s, z0.s // encoding: [0x00,0x00,0xa0,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-10100000-00000000-00000000
+add     z31.d, z31.d, z31.d  // 00000100-11111111-00000011-11111111
+// CHECK: add     z31.d, z31.d, z31.d // encoding: [0xff,0x03,0xff,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-11111111-00000011-11111111
+add     z21.b, z10.b, z21.b  // 00000100-00110101-00000001-01010101
+// CHECK: add     z21.b, z10.b, z21.b // encoding: [0x55,0x01,0x35,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-00110101-00000001-01010101
+add     z31.b, z31.b, z31.b  // 00000100-00111111-00000011-11111111
+// CHECK: add     z31.b, z31.b, z31.b // encoding: [0xff,0x03,0x3f,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-00111111-00000011-11111111
+add     z0.h, z0.h, z0.h  // 00000100-01100000-00000000-00000000
+// CHECK: add     z0.h, z0.h, z0.h // encoding: [0x00,0x00,0x60,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-01100000-00000000-00000000
+add     z23.b, z13.b, z8.b  // 00000100-00101000-00000001-10110111
+// CHECK: add     z23.b, z13.b, z8.b // encoding: [0xb7,0x01,0x28,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-00101000-00000001-10110111
+add     z0.d, z0.d, z0.d  // 00000100-11100000-00000000-00000000
+// CHECK: add     z0.d, z0.d, z0.d // encoding: [0x00,0x00,0xe0,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-11100000-00000000-00000000
+add     z31.h, z31.h, z31.h  // 00000100-01111111-00000011-11111111
+// CHECK: add     z31.h, z31.h, z31.h // encoding: [0xff,0x03,0x7f,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-01111111-00000011-11111111
+add     z0.b, z0.b, z0.b  // 00000100-00100000-00000000-00000000
+// CHECK: add     z0.b, z0.b, z0.b // encoding: [0x00,0x00,0x20,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-00100000-00000000-00000000
+add     z21.d, z10.d, z21.d  // 00000100-11110101-00000001-01010101
+// CHECK: add     z21.d, z10.d, z21.d // encoding: [0x55,0x01,0xf5,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-11110101-00000001-01010101
+add     z21.h, z10.h, z21.h  // 00000100-01110101-00000001-01010101
+// CHECK: add     z21.h, z10.h, z21.h // encoding: [0x55,0x01,0x75,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-01110101-00000001-01010101
+add     z21.s, z10.s, z21.s  // 00000100-10110101-00000001-01010101
+// CHECK: add     z21.s, z10.s, z21.s // encoding: [0x55,0x01,0xb5,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-10110101-00000001-01010101
+add     z23.h, z13.h, z8.h  // 00000100-01101000-00000001-10110111
+// CHECK: add     z23.h, z13.h, z8.h // encoding: [0xb7,0x01,0x68,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-01101000-00000001-10110111
+add     z23.s, z13.s, z8.s  // 00000100-10101000-00000001-10110111
+// CHECK: add     z23.s, z13.s, z8.s // encoding: [0xb7,0x01,0xa8,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-10101000-00000001-10110111
Index: llvm/trunk/test/MC/AArch64/SVE/assembler_tests/sub.s
===================================================================
--- llvm/trunk/test/MC/AArch64/SVE/assembler_tests/sub.s
+++ llvm/trunk/test/MC/AArch64/SVE/assembler_tests/sub.s
@@ -0,0 +1,66 @@
+// RUN: llvm-mc -triple=aarch64-none-linux-gnu -show-encoding -mattr=+sve < %s | FileCheck %s
+// RUN: not llvm-mc -triple=aarch64-none-linux-gnu -show-encoding -mattr=-sve 2>&1 < %s | FileCheck --check-prefix=CHECK-ERROR %s
+sub     z0.h, z0.h, z0.h  // 00000100-01100000-00000100-00000000
+// CHECK: sub     z0.h, z0.h, z0.h // encoding: [0x00,0x04,0x60,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-01100000-00000100-00000000
+sub     z21.b, z10.b, z21.b  // 00000100-00110101-00000101-01010101
+// CHECK: sub     z21.b, z10.b, z21.b // encoding: [0x55,0x05,0x35,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-00110101-00000101-01010101
+sub     z31.h, z31.h, z31.h  // 00000100-01111111-00000111-11111111
+// CHECK: sub     z31.h, z31.h, z31.h // encoding: [0xff,0x07,0x7f,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-01111111-00000111-11111111
+sub     z21.h, z10.h, z21.h  // 00000100-01110101-00000101-01010101
+// CHECK: sub     z21.h, z10.h, z21.h // encoding: [0x55,0x05,0x75,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-01110101-00000101-01010101
+sub     z31.b, z31.b, z31.b  // 00000100-00111111-00000111-11111111
+// CHECK: sub     z31.b, z31.b, z31.b // encoding: [0xff,0x07,0x3f,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-00111111-00000111-11111111
+sub     z0.s, z0.s, z0.s  // 00000100-10100000-00000100-00000000
+// CHECK: sub     z0.s, z0.s, z0.s // encoding: [0x00,0x04,0xa0,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-10100000-00000100-00000000
+sub     z23.b, z13.b, z8.b  // 00000100-00101000-00000101-10110111
+// CHECK: sub     z23.b, z13.b, z8.b // encoding: [0xb7,0x05,0x28,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-00101000-00000101-10110111
+sub     z21.d, z10.d, z21.d  // 00000100-11110101-00000101-01010101
+// CHECK: sub     z21.d, z10.d, z21.d // encoding: [0x55,0x05,0xf5,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-11110101-00000101-01010101
+sub     z21.s, z10.s, z21.s  // 00000100-10110101-00000101-01010101
+// CHECK: sub     z21.s, z10.s, z21.s // encoding: [0x55,0x05,0xb5,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-10110101-00000101-01010101
+sub     z0.b, z0.b, z0.b  // 00000100-00100000-00000100-00000000
+// CHECK: sub     z0.b, z0.b, z0.b // encoding: [0x00,0x04,0x20,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-00100000-00000100-00000000
+sub     z23.d, z13.d, z8.d  // 00000100-11101000-00000101-10110111
+// CHECK: sub     z23.d, z13.d, z8.d // encoding: [0xb7,0x05,0xe8,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-11101000-00000101-10110111
+sub     z23.s, z13.s, z8.s  // 00000100-10101000-00000101-10110111
+// CHECK: sub     z23.s, z13.s, z8.s // encoding: [0xb7,0x05,0xa8,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-10101000-00000101-10110111
+sub     z31.d, z31.d, z31.d  // 00000100-11111111-00000111-11111111
+// CHECK: sub     z31.d, z31.d, z31.d // encoding: [0xff,0x07,0xff,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-11111111-00000111-11111111
+sub     z23.h, z13.h, z8.h  // 00000100-01101000-00000101-10110111
+// CHECK: sub     z23.h, z13.h, z8.h // encoding: [0xb7,0x05,0x68,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-01101000-00000101-10110111
+sub     z0.d, z0.d, z0.d  // 00000100-11100000-00000100-00000000
+// CHECK: sub     z0.d, z0.d, z0.d // encoding: [0x00,0x04,0xe0,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-11100000-00000100-00000000
+sub     z31.s, z31.s, z31.s  // 00000100-10111111-00000111-11111111
+// CHECK: sub     z31.s, z31.s, z31.s // encoding: [0xff,0x07,0xbf,0x04]
+// CHECK-ERROR: invalid operand for instruction
+// CHECK-ERROR-NEXT: 00000100-10111111-00000111-11111111
Index: llvm/trunk/test/MC/AArch64/SVE/disassembler_tests/add.s
===================================================================
--- llvm/trunk/test/MC/AArch64/SVE/disassembler_tests/add.s
+++ llvm/trunk/test/MC/AArch64/SVE/disassembler_tests/add.s
@@ -0,0 +1,50 @@
+# RUN: llvm-mc -triple=aarch64-none-linux-gnu -show-encoding -disassemble -mattr=+sve < %s | FileCheck %s
+# RUN: llvm-mc -triple=aarch64-none-linux-gnu -show-encoding -disassemble -mattr=-sve 2>&1 < %s | FileCheck --check-prefix=CHECK-ERROR  %s
+0xff,0x03,0xbf,0x04
+# CHECK: add     z31.s, z31.s, z31.s // encoding: [0xff,0x03,0xbf,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xb7,0x01,0xe8,0x04
+# CHECK: add     z23.d, z13.d, z8.d // encoding: [0xb7,0x01,0xe8,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x00,0x00,0xa0,0x04
+# CHECK: add     z0.s, z0.s, z0.s // encoding: [0x00,0x00,0xa0,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xff,0x03,0xff,0x04
+# CHECK: add     z31.d, z31.d, z31.d // encoding: [0xff,0x03,0xff,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x55,0x01,0x35,0x04
+# CHECK: add     z21.b, z10.b, z21.b // encoding: [0x55,0x01,0x35,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xff,0x03,0x3f,0x04
+# CHECK: add     z31.b, z31.b, z31.b // encoding: [0xff,0x03,0x3f,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x00,0x00,0x60,0x04
+# CHECK: add     z0.h, z0.h, z0.h // encoding: [0x00,0x00,0x60,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xb7,0x01,0x28,0x04
+# CHECK: add     z23.b, z13.b, z8.b // encoding: [0xb7,0x01,0x28,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x00,0x00,0xe0,0x04
+# CHECK: add     z0.d, z0.d, z0.d // encoding: [0x00,0x00,0xe0,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xff,0x03,0x7f,0x04
+# CHECK: add     z31.h, z31.h, z31.h // encoding: [0xff,0x03,0x7f,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x00,0x00,0x20,0x04
+# CHECK: add     z0.b, z0.b, z0.b // encoding: [0x00,0x00,0x20,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x55,0x01,0xf5,0x04
+# CHECK: add     z21.d, z10.d, z21.d // encoding: [0x55,0x01,0xf5,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x55,0x01,0x75,0x04
+# CHECK: add     z21.h, z10.h, z21.h // encoding: [0x55,0x01,0x75,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x55,0x01,0xb5,0x04
+# CHECK: add     z21.s, z10.s, z21.s // encoding: [0x55,0x01,0xb5,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xb7,0x01,0x68,0x04
+# CHECK: add     z23.h, z13.h, z8.h // encoding: [0xb7,0x01,0x68,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xb7,0x01,0xa8,0x04
+# CHECK: add     z23.s, z13.s, z8.s // encoding: [0xb7,0x01,0xa8,0x04]
+# CHECK-ERROR: invalid instruction encoding
Index: llvm/trunk/test/MC/AArch64/SVE/disassembler_tests/sub.s
===================================================================
--- llvm/trunk/test/MC/AArch64/SVE/disassembler_tests/sub.s
+++ llvm/trunk/test/MC/AArch64/SVE/disassembler_tests/sub.s
@@ -0,0 +1,50 @@
+# RUN: llvm-mc -triple=aarch64-none-linux-gnu -show-encoding -disassemble -mattr=+sve < %s | FileCheck %s
+# RUN: llvm-mc -triple=aarch64-none-linux-gnu -show-encoding -disassemble -mattr=-sve 2>&1 < %s | FileCheck --check-prefix=CHECK-ERROR  %s
+0x00,0x04,0x60,0x04
+# CHECK: sub     z0.h, z0.h, z0.h // encoding: [0x00,0x04,0x60,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x55,0x05,0x35,0x04
+# CHECK: sub     z21.b, z10.b, z21.b // encoding: [0x55,0x05,0x35,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xff,0x07,0x7f,0x04
+# CHECK: sub     z31.h, z31.h, z31.h // encoding: [0xff,0x07,0x7f,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x55,0x05,0x75,0x04
+# CHECK: sub     z21.h, z10.h, z21.h // encoding: [0x55,0x05,0x75,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xff,0x07,0x3f,0x04
+# CHECK: sub     z31.b, z31.b, z31.b // encoding: [0xff,0x07,0x3f,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x00,0x04,0xa0,0x04
+# CHECK: sub     z0.s, z0.s, z0.s // encoding: [0x00,0x04,0xa0,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xb7,0x05,0x28,0x04
+# CHECK: sub     z23.b, z13.b, z8.b // encoding: [0xb7,0x05,0x28,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x55,0x05,0xf5,0x04
+# CHECK: sub     z21.d, z10.d, z21.d // encoding: [0x55,0x05,0xf5,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x55,0x05,0xb5,0x04
+# CHECK: sub     z21.s, z10.s, z21.s // encoding: [0x55,0x05,0xb5,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x00,0x04,0x20,0x04
+# CHECK: sub     z0.b, z0.b, z0.b // encoding: [0x00,0x04,0x20,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xb7,0x05,0xe8,0x04
+# CHECK: sub     z23.d, z13.d, z8.d // encoding: [0xb7,0x05,0xe8,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xb7,0x05,0xa8,0x04
+# CHECK: sub     z23.s, z13.s, z8.s // encoding: [0xb7,0x05,0xa8,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xff,0x07,0xff,0x04
+# CHECK: sub     z31.d, z31.d, z31.d // encoding: [0xff,0x07,0xff,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xb7,0x05,0x68,0x04
+# CHECK: sub     z23.h, z13.h, z8.h // encoding: [0xb7,0x05,0x68,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0x00,0x04,0xe0,0x04
+# CHECK: sub     z0.d, z0.d, z0.d // encoding: [0x00,0x04,0xe0,0x04]
+# CHECK-ERROR: invalid instruction encoding
+0xff,0x07,0xbf,0x04
+# CHECK: sub     z31.s, z31.s, z31.s // encoding: [0xff,0x07,0xbf,0x04]
+# CHECK-ERROR: invalid instruction encoding