diff --git a/llvm/lib/Target/AArch64/AArch64SMEInstrInfo.td b/llvm/lib/Target/AArch64/AArch64SMEInstrInfo.td
--- a/llvm/lib/Target/AArch64/AArch64SMEInstrInfo.td
+++ b/llvm/lib/Target/AArch64/AArch64SMEInstrInfo.td
@@ -396,6 +396,16 @@
 defm UMLSLL_VG2_M2Z2Z_BtoS : sme2_mla_ll_array_vg2_multi_32b<"umlsll",  0b110>;
 defm UMLSLL_VG4_M4Z4Z_BtoS : sme2_mla_ll_array_vg4_multi_32b<"umlsll",  0b110>;
 
+defm BMOPA_TPPZZ : sme2_bmopx_tile_base<"bmopa", 0b000>;
+defm BMOPS_TPPZZ : sme2_bmopx_tile_base<"bmops", 0b001>;
+
+defm SMOPA_TPPZZ : sme2_int_mopx_tile_base<"smopa", 0b100>;
+defm SMOPS_TPPZZ : sme2_int_mopx_tile_base<"smops", 0b101>;
+
+defm UMOPA_TPPZZ : sme2_int_mopx_tile_base<"umopa", 0b110>;
+defm UMOPS_TPPZZ : sme2_int_mopx_tile_base<"umops", 0b111>;
+
+
 }
 
 
diff --git a/llvm/lib/Target/AArch64/SMEInstrFormats.td b/llvm/lib/Target/AArch64/SMEInstrFormats.td
--- a/llvm/lib/Target/AArch64/SMEInstrFormats.td
+++ b/llvm/lib/Target/AArch64/SMEInstrFormats.td
@@ -1965,3 +1965,39 @@
   def : InstAlias<mnemonic # "\t$ZAda[$Rv, $imm], $Zn, $Zm",
                  (!cast<Instruction>(NAME) MatrixOp64:$ZAda, MatrixIndexGPR32Op8_11:$Rv, uimm1s4range:$imm, ZZZZ_h_mul_r:$Zn, ZZZZ_h_mul_r:$Zm), 0>;
 }
+
+//===----------------------------------------------------------------------===//
+// SME2 Outer Product and Accumulate
+class sme2_mopx_tile_base<bits<3> s, ZPRRegOp vector_ty, string mnemonic>
+    : I<(outs TileOp32:$ZAda),
+        (ins TileOp32:$_ZAda, PPR3bAny:$Pn, PPR3bAny:$Pm, vector_ty:$Zn, vector_ty:$Zm),
+        mnemonic, "\t$ZAda, $Pn/m, $Pm/m, $Zn, $Zm",
+        "", []>, Sched<[]> {
+  bits<2> ZAda;
+  bits<5> Zn;
+  bits<3> Pn;
+  bits<3> Pm;
+  bits<5> Zm;
+  let Inst{31-30} = 0b10;
+  let Inst{29}    = s{2};
+  let Inst{28-25} = 0b0000;
+  let Inst{24}    = s{1};
+  let Inst{23-21} = 0b100;
+  let Inst{20-16} = Zm;
+  let Inst{15-13} = Pm;
+  let Inst{12-10} = Pn;
+  let Inst{9-5}   = Zn;
+  let Inst{4}     = s{0};
+  let Inst{3-2}   = 0b10;
+  let Inst{1-0}   = ZAda;
+
+  let Constraints = "$ZAda = $_ZAda";
+}
+
+multiclass sme2_bmopx_tile_base<string mnemonic, bits<3> s>{
+  def NAME: sme2_mopx_tile_base<s, ZPR32,  mnemonic>;
+}
+
+multiclass sme2_int_mopx_tile_base<string mnemonic, bits<3> s>{
+  def NAME: sme2_mopx_tile_base<s, ZPR16, mnemonic>;
+}
diff --git a/llvm/test/MC/AArch64/SME/smopa-diagnostics.s b/llvm/test/MC/AArch64/SME/smopa-diagnostics.s
--- a/llvm/test/MC/AArch64/SME/smopa-diagnostics.s
+++ b/llvm/test/MC/AArch64/SME/smopa-diagnostics.s
@@ -67,7 +67,7 @@
 // expected: .s => .b, .d => .h
 
 smopa za0.s, p0/m, p0/m, z0.h, z0.b
-// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid element width
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
 // CHECK-NEXT: smopa za0.s, p0/m, p0/m, z0.h, z0.b
 // CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
 
diff --git a/llvm/test/MC/AArch64/SME/smops-diagnostics.s b/llvm/test/MC/AArch64/SME/smops-diagnostics.s
--- a/llvm/test/MC/AArch64/SME/smops-diagnostics.s
+++ b/llvm/test/MC/AArch64/SME/smops-diagnostics.s
@@ -67,7 +67,7 @@
 // expected: .s => .b, .d => .h
 
 smops za0.s, p0/m, p0/m, z0.h, z0.b
-// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid element width
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
 // CHECK-NEXT: smops za0.s, p0/m, p0/m, z0.h, z0.b
 // CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
 
diff --git a/llvm/test/MC/AArch64/SME/umopa-diagnostics.s b/llvm/test/MC/AArch64/SME/umopa-diagnostics.s
--- a/llvm/test/MC/AArch64/SME/umopa-diagnostics.s
+++ b/llvm/test/MC/AArch64/SME/umopa-diagnostics.s
@@ -67,7 +67,7 @@
 // expected: .s => .b, .d => .h
 
 umopa za0.s, p0/m, p0/m, z0.h, z0.b
-// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid element width
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
 // CHECK-NEXT: umopa za0.s, p0/m, p0/m, z0.h, z0.b
 // CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
 
diff --git a/llvm/test/MC/AArch64/SME/umops-diagnostics.s b/llvm/test/MC/AArch64/SME/umops-diagnostics.s
--- a/llvm/test/MC/AArch64/SME/umops-diagnostics.s
+++ b/llvm/test/MC/AArch64/SME/umops-diagnostics.s
@@ -67,7 +67,7 @@
 // expected: .s => .b, .d => .h
 
 umops za0.s, p0/m, p0/m, z0.h, z0.b
-// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid element width
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
 // CHECK-NEXT: umops za0.s, p0/m, p0/m, z0.h, z0.b
 // CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
 
diff --git a/llvm/test/MC/AArch64/SME2/bmopa-diagnostics.s b/llvm/test/MC/AArch64/SME2/bmopa-diagnostics.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/bmopa-diagnostics.s
@@ -0,0 +1,35 @@
+// RUN: not llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 2>&1 < %s | FileCheck %s
+
+// --------------------------------------------------------------------------//
+// Invalid tile
+
+bmopa za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: bmopa za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid predicate
+
+bmopa za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: bmopa za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+bmopa za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid restricted predicate register, expected p0..p7 (without element suffix)
+// CHECK-NEXT: bmopa za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid suffixes
+
+bmopa za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid matrix operand, expected za[0-3].s
+// CHECK-NEXT: bmopa za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+bmopa za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid element width
+// CHECK-NEXT: za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
diff --git a/llvm/test/MC/AArch64/SME2/bmopa.s b/llvm/test/MC/AArch64/SME2/bmopa.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/bmopa.s
@@ -0,0 +1,86 @@
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+// RUN: not llvm-mc -triple=aarch64 -show-encoding < %s 2>&1 \
+// RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d --mattr=+sme2 - | FileCheck %s --check-prefix=CHECK-INST
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d - | FileCheck %s --check-prefix=CHECK-UNKNOWN
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | sed '/.text/d' | sed 's/.*encoding: //g' \
+// RUN:        | llvm-mc -triple=aarch64 -mattr=+sme2 -disassemble -show-encoding \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+
+
+bmopa   za0.s, p0/m, p0/m, z0.s, z0.s  // 10000000-10000000-00000000-00001000
+// CHECK-INST: bmopa   za0.s, p0/m, p0/m, z0.s, z0.s
+// CHECK-ENCODING: [0x08,0x00,0x80,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 80800008 <unknown>
+
+bmopa   za1.s, p5/m, p2/m, z10.s, z21.s  // 10000000-10010101-01010101-01001001
+// CHECK-INST: bmopa   za1.s, p5/m, p2/m, z10.s, z21.s
+// CHECK-ENCODING: [0x49,0x55,0x95,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 80955549 <unknown>
+
+bmopa   za3.s, p3/m, p7/m, z13.s, z8.s  // 10000000-10001000-11101101-10101011
+// CHECK-INST: bmopa   za3.s, p3/m, p7/m, z13.s, z8.s
+// CHECK-ENCODING: [0xab,0xed,0x88,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 8088edab <unknown>
+
+bmopa   za3.s, p7/m, p7/m, z31.s, z31.s  // 10000000-10011111-11111111-11101011
+// CHECK-INST: bmopa   za3.s, p7/m, p7/m, z31.s, z31.s
+// CHECK-ENCODING: [0xeb,0xff,0x9f,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 809fffeb <unknown>
+
+bmopa   za1.s, p3/m, p0/m, z17.s, z16.s  // 10000000-10010000-00001110-00101001
+// CHECK-INST: bmopa   za1.s, p3/m, p0/m, z17.s, z16.s
+// CHECK-ENCODING: [0x29,0x0e,0x90,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 80900e29 <unknown>
+
+bmopa   za1.s, p1/m, p4/m, z1.s, z30.s  // 10000000-10011110-10000100-00101001
+// CHECK-INST: bmopa   za1.s, p1/m, p4/m, z1.s, z30.s
+// CHECK-ENCODING: [0x29,0x84,0x9e,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 809e8429 <unknown>
+
+bmopa   za0.s, p5/m, p2/m, z19.s, z20.s  // 10000000-10010100-01010110-01101000
+// CHECK-INST: bmopa   za0.s, p5/m, p2/m, z19.s, z20.s
+// CHECK-ENCODING: [0x68,0x56,0x94,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 80945668 <unknown>
+
+bmopa   za0.s, p6/m, p0/m, z12.s, z2.s  // 10000000-10000010-00011001-10001000
+// CHECK-INST: bmopa   za0.s, p6/m, p0/m, z12.s, z2.s
+// CHECK-ENCODING: [0x88,0x19,0x82,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 80821988 <unknown>
+
+bmopa   za1.s, p2/m, p6/m, z1.s, z26.s  // 10000000-10011010-11001000-00101001
+// CHECK-INST: bmopa   za1.s, p2/m, p6/m, z1.s, z26.s
+// CHECK-ENCODING: [0x29,0xc8,0x9a,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 809ac829 <unknown>
+
+bmopa   za1.s, p2/m, p0/m, z22.s, z30.s  // 10000000-10011110-00001010-11001001
+// CHECK-INST: bmopa   za1.s, p2/m, p0/m, z22.s, z30.s
+// CHECK-ENCODING: [0xc9,0x0a,0x9e,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 809e0ac9 <unknown>
+
+bmopa   za2.s, p5/m, p7/m, z9.s, z1.s  // 10000000-10000001-11110101-00101010
+// CHECK-INST: bmopa   za2.s, p5/m, p7/m, z9.s, z1.s
+// CHECK-ENCODING: [0x2a,0xf5,0x81,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 8081f52a <unknown>
+
+bmopa   za3.s, p2/m, p5/m, z12.s, z11.s  // 10000000-10001011-10101001-10001011
+// CHECK-INST: bmopa   za3.s, p2/m, p5/m, z12.s, z11.s
+// CHECK-ENCODING: [0x8b,0xa9,0x8b,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 808ba98b <unknown>
+
diff --git a/llvm/test/MC/AArch64/SME2/bmops-diagnostics.s b/llvm/test/MC/AArch64/SME2/bmops-diagnostics.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/bmops-diagnostics.s
@@ -0,0 +1,35 @@
+// RUN: not llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 2>&1 < %s | FileCheck %s
+
+// --------------------------------------------------------------------------//
+// Invalid tile
+
+bmops za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: bmops za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid predicate
+
+bmops za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: bmops za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+bmops za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid restricted predicate register, expected p0..p7 (without element suffix)
+// CHECK-NEXT: bmops za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid suffixes
+
+bmops za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid matrix operand, expected za[0-3].s
+// CHECK-NEXT: bmops za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+bmops za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid element width
+// CHECK-NEXT: za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
diff --git a/llvm/test/MC/AArch64/SME2/bmops.s b/llvm/test/MC/AArch64/SME2/bmops.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/bmops.s
@@ -0,0 +1,86 @@
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+// RUN: not llvm-mc -triple=aarch64 -show-encoding < %s 2>&1 \
+// RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d --mattr=+sme2 - | FileCheck %s --check-prefix=CHECK-INST
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d - | FileCheck %s --check-prefix=CHECK-UNKNOWN
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | sed '/.text/d' | sed 's/.*encoding: //g' \
+// RUN:        | llvm-mc -triple=aarch64 -mattr=+sme2 -disassemble -show-encoding \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+
+
+bmops   za0.s, p0/m, p0/m, z0.s, z0.s  // 10000000-10000000-00000000-00011000
+// CHECK-INST: bmops   za0.s, p0/m, p0/m, z0.s, z0.s
+// CHECK-ENCODING: [0x18,0x00,0x80,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 80800018 <unknown>
+
+bmops   za1.s, p5/m, p2/m, z10.s, z21.s  // 10000000-10010101-01010101-01011001
+// CHECK-INST: bmops   za1.s, p5/m, p2/m, z10.s, z21.s
+// CHECK-ENCODING: [0x59,0x55,0x95,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 80955559 <unknown>
+
+bmops   za3.s, p3/m, p7/m, z13.s, z8.s  // 10000000-10001000-11101101-10111011
+// CHECK-INST: bmops   za3.s, p3/m, p7/m, z13.s, z8.s
+// CHECK-ENCODING: [0xbb,0xed,0x88,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 8088edbb <unknown>
+
+bmops   za3.s, p7/m, p7/m, z31.s, z31.s  // 10000000-10011111-11111111-11111011
+// CHECK-INST: bmops   za3.s, p7/m, p7/m, z31.s, z31.s
+// CHECK-ENCODING: [0xfb,0xff,0x9f,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 809ffffb <unknown>
+
+bmops   za1.s, p3/m, p0/m, z17.s, z16.s  // 10000000-10010000-00001110-00111001
+// CHECK-INST: bmops   za1.s, p3/m, p0/m, z17.s, z16.s
+// CHECK-ENCODING: [0x39,0x0e,0x90,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 80900e39 <unknown>
+
+bmops   za1.s, p1/m, p4/m, z1.s, z30.s  // 10000000-10011110-10000100-00111001
+// CHECK-INST: bmops   za1.s, p1/m, p4/m, z1.s, z30.s
+// CHECK-ENCODING: [0x39,0x84,0x9e,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 809e8439 <unknown>
+
+bmops   za0.s, p5/m, p2/m, z19.s, z20.s  // 10000000-10010100-01010110-01111000
+// CHECK-INST: bmops   za0.s, p5/m, p2/m, z19.s, z20.s
+// CHECK-ENCODING: [0x78,0x56,0x94,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 80945678 <unknown>
+
+bmops   za0.s, p6/m, p0/m, z12.s, z2.s  // 10000000-10000010-00011001-10011000
+// CHECK-INST: bmops   za0.s, p6/m, p0/m, z12.s, z2.s
+// CHECK-ENCODING: [0x98,0x19,0x82,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 80821998 <unknown>
+
+bmops   za1.s, p2/m, p6/m, z1.s, z26.s  // 10000000-10011010-11001000-00111001
+// CHECK-INST: bmops   za1.s, p2/m, p6/m, z1.s, z26.s
+// CHECK-ENCODING: [0x39,0xc8,0x9a,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 809ac839 <unknown>
+
+bmops   za1.s, p2/m, p0/m, z22.s, z30.s  // 10000000-10011110-00001010-11011001
+// CHECK-INST: bmops   za1.s, p2/m, p0/m, z22.s, z30.s
+// CHECK-ENCODING: [0xd9,0x0a,0x9e,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 809e0ad9 <unknown>
+
+bmops   za2.s, p5/m, p7/m, z9.s, z1.s  // 10000000-10000001-11110101-00111010
+// CHECK-INST: bmops   za2.s, p5/m, p7/m, z9.s, z1.s
+// CHECK-ENCODING: [0x3a,0xf5,0x81,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 8081f53a <unknown>
+
+bmops   za3.s, p2/m, p5/m, z12.s, z11.s  // 10000000-10001011-10101001-10011011
+// CHECK-INST: bmops   za3.s, p2/m, p5/m, z12.s, z11.s
+// CHECK-ENCODING: [0x9b,0xa9,0x8b,0x80]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: 808ba99b <unknown>
+
diff --git a/llvm/test/MC/AArch64/SME2/smopa-diagnostics.s b/llvm/test/MC/AArch64/SME2/smopa-diagnostics.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/smopa-diagnostics.s
@@ -0,0 +1,35 @@
+// RUN: not llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 2>&1 < %s | FileCheck %s
+
+// --------------------------------------------------------------------------//
+// Invalid tile
+
+smopa za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: smopa za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid predicate
+
+smopa za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: smopa za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+smopa za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid restricted predicate register, expected p0..p7 (without element suffix)
+// CHECK-NEXT: smopa za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid suffixes
+
+smopa za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid matrix operand, expected za[0-3].s
+// CHECK-NEXT: smopa za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+smopa za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid element width
+// CHECK-NEXT: za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
diff --git a/llvm/test/MC/AArch64/SME2/smopa.s b/llvm/test/MC/AArch64/SME2/smopa.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/smopa.s
@@ -0,0 +1,86 @@
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+// RUN: not llvm-mc -triple=aarch64 -show-encoding < %s 2>&1 \
+// RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d --mattr=+sme2 - | FileCheck %s --check-prefix=CHECK-INST
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d - | FileCheck %s --check-prefix=CHECK-UNKNOWN
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | sed '/.text/d' | sed 's/.*encoding: //g' \
+// RUN:        | llvm-mc -triple=aarch64 -mattr=+sme2 -disassemble -show-encoding \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+
+
+smopa   za0.s, p0/m, p0/m, z0.h, z0.h  // 10100000-10000000-00000000-00001000
+// CHECK-INST: smopa   za0.s, p0/m, p0/m, z0.h, z0.h
+// CHECK-ENCODING: [0x08,0x00,0x80,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a0800008 <unknown>
+
+smopa   za1.s, p5/m, p2/m, z10.h, z21.h  // 10100000-10010101-01010101-01001001
+// CHECK-INST: smopa   za1.s, p5/m, p2/m, z10.h, z21.h
+// CHECK-ENCODING: [0x49,0x55,0x95,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a0955549 <unknown>
+
+smopa   za3.s, p3/m, p7/m, z13.h, z8.h  // 10100000-10001000-11101101-10101011
+// CHECK-INST: smopa   za3.s, p3/m, p7/m, z13.h, z8.h
+// CHECK-ENCODING: [0xab,0xed,0x88,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a088edab <unknown>
+
+smopa   za3.s, p7/m, p7/m, z31.h, z31.h  // 10100000-10011111-11111111-11101011
+// CHECK-INST: smopa   za3.s, p7/m, p7/m, z31.h, z31.h
+// CHECK-ENCODING: [0xeb,0xff,0x9f,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a09fffeb <unknown>
+
+smopa   za1.s, p3/m, p0/m, z17.h, z16.h  // 10100000-10010000-00001110-00101001
+// CHECK-INST: smopa   za1.s, p3/m, p0/m, z17.h, z16.h
+// CHECK-ENCODING: [0x29,0x0e,0x90,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a0900e29 <unknown>
+
+smopa   za1.s, p1/m, p4/m, z1.h, z30.h  // 10100000-10011110-10000100-00101001
+// CHECK-INST: smopa   za1.s, p1/m, p4/m, z1.h, z30.h
+// CHECK-ENCODING: [0x29,0x84,0x9e,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a09e8429 <unknown>
+
+smopa   za0.s, p5/m, p2/m, z19.h, z20.h  // 10100000-10010100-01010110-01101000
+// CHECK-INST: smopa   za0.s, p5/m, p2/m, z19.h, z20.h
+// CHECK-ENCODING: [0x68,0x56,0x94,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a0945668 <unknown>
+
+smopa   za0.s, p6/m, p0/m, z12.h, z2.h  // 10100000-10000010-00011001-10001000
+// CHECK-INST: smopa   za0.s, p6/m, p0/m, z12.h, z2.h
+// CHECK-ENCODING: [0x88,0x19,0x82,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a0821988 <unknown>
+
+smopa   za1.s, p2/m, p6/m, z1.h, z26.h  // 10100000-10011010-11001000-00101001
+// CHECK-INST: smopa   za1.s, p2/m, p6/m, z1.h, z26.h
+// CHECK-ENCODING: [0x29,0xc8,0x9a,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a09ac829 <unknown>
+
+smopa   za1.s, p2/m, p0/m, z22.h, z30.h  // 10100000-10011110-00001010-11001001
+// CHECK-INST: smopa   za1.s, p2/m, p0/m, z22.h, z30.h
+// CHECK-ENCODING: [0xc9,0x0a,0x9e,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a09e0ac9 <unknown>
+
+smopa   za2.s, p5/m, p7/m, z9.h, z1.h  // 10100000-10000001-11110101-00101010
+// CHECK-INST: smopa   za2.s, p5/m, p7/m, z9.h, z1.h
+// CHECK-ENCODING: [0x2a,0xf5,0x81,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a081f52a <unknown>
+
+smopa   za3.s, p2/m, p5/m, z12.h, z11.h  // 10100000-10001011-10101001-10001011
+// CHECK-INST: smopa   za3.s, p2/m, p5/m, z12.h, z11.h
+// CHECK-ENCODING: [0x8b,0xa9,0x8b,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a08ba98b <unknown>
+
diff --git a/llvm/test/MC/AArch64/SME2/smops-diagnostics.s b/llvm/test/MC/AArch64/SME2/smops-diagnostics.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/smops-diagnostics.s
@@ -0,0 +1,35 @@
+// RUN: not llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 2>&1 < %s | FileCheck %s
+
+// --------------------------------------------------------------------------//
+// Invalid tile
+
+smops za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: smops za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid predicate
+
+smops za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: smops za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+smops za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid restricted predicate register, expected p0..p7 (without element suffix)
+// CHECK-NEXT: smops za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid suffixes
+
+smops za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid matrix operand, expected za[0-3].s
+// CHECK-NEXT: smops za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+smops za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid element width
+// CHECK-NEXT: za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
diff --git a/llvm/test/MC/AArch64/SME2/smops.s b/llvm/test/MC/AArch64/SME2/smops.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/smops.s
@@ -0,0 +1,86 @@
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+// RUN: not llvm-mc -triple=aarch64 -show-encoding < %s 2>&1 \
+// RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d --mattr=+sme2 - | FileCheck %s --check-prefix=CHECK-INST
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d - | FileCheck %s --check-prefix=CHECK-UNKNOWN
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | sed '/.text/d' | sed 's/.*encoding: //g' \
+// RUN:        | llvm-mc -triple=aarch64 -mattr=+sme2 -disassemble -show-encoding \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+
+
+smops   za0.s, p0/m, p0/m, z0.h, z0.h  // 10100000-10000000-00000000-00011000
+// CHECK-INST: smops   za0.s, p0/m, p0/m, z0.h, z0.h
+// CHECK-ENCODING: [0x18,0x00,0x80,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a0800018 <unknown>
+
+smops   za1.s, p5/m, p2/m, z10.h, z21.h  // 10100000-10010101-01010101-01011001
+// CHECK-INST: smops   za1.s, p5/m, p2/m, z10.h, z21.h
+// CHECK-ENCODING: [0x59,0x55,0x95,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a0955559 <unknown>
+
+smops   za3.s, p3/m, p7/m, z13.h, z8.h  // 10100000-10001000-11101101-10111011
+// CHECK-INST: smops   za3.s, p3/m, p7/m, z13.h, z8.h
+// CHECK-ENCODING: [0xbb,0xed,0x88,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a088edbb <unknown>
+
+smops   za3.s, p7/m, p7/m, z31.h, z31.h  // 10100000-10011111-11111111-11111011
+// CHECK-INST: smops   za3.s, p7/m, p7/m, z31.h, z31.h
+// CHECK-ENCODING: [0xfb,0xff,0x9f,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a09ffffb <unknown>
+
+smops   za1.s, p3/m, p0/m, z17.h, z16.h  // 10100000-10010000-00001110-00111001
+// CHECK-INST: smops   za1.s, p3/m, p0/m, z17.h, z16.h
+// CHECK-ENCODING: [0x39,0x0e,0x90,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a0900e39 <unknown>
+
+smops   za1.s, p1/m, p4/m, z1.h, z30.h  // 10100000-10011110-10000100-00111001
+// CHECK-INST: smops   za1.s, p1/m, p4/m, z1.h, z30.h
+// CHECK-ENCODING: [0x39,0x84,0x9e,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a09e8439 <unknown>
+
+smops   za0.s, p5/m, p2/m, z19.h, z20.h  // 10100000-10010100-01010110-01111000
+// CHECK-INST: smops   za0.s, p5/m, p2/m, z19.h, z20.h
+// CHECK-ENCODING: [0x78,0x56,0x94,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a0945678 <unknown>
+
+smops   za0.s, p6/m, p0/m, z12.h, z2.h  // 10100000-10000010-00011001-10011000
+// CHECK-INST: smops   za0.s, p6/m, p0/m, z12.h, z2.h
+// CHECK-ENCODING: [0x98,0x19,0x82,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a0821998 <unknown>
+
+smops   za1.s, p2/m, p6/m, z1.h, z26.h  // 10100000-10011010-11001000-00111001
+// CHECK-INST: smops   za1.s, p2/m, p6/m, z1.h, z26.h
+// CHECK-ENCODING: [0x39,0xc8,0x9a,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a09ac839 <unknown>
+
+smops   za1.s, p2/m, p0/m, z22.h, z30.h  // 10100000-10011110-00001010-11011001
+// CHECK-INST: smops   za1.s, p2/m, p0/m, z22.h, z30.h
+// CHECK-ENCODING: [0xd9,0x0a,0x9e,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a09e0ad9 <unknown>
+
+smops   za2.s, p5/m, p7/m, z9.h, z1.h  // 10100000-10000001-11110101-00111010
+// CHECK-INST: smops   za2.s, p5/m, p7/m, z9.h, z1.h
+// CHECK-ENCODING: [0x3a,0xf5,0x81,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a081f53a <unknown>
+
+smops   za3.s, p2/m, p5/m, z12.h, z11.h  // 10100000-10001011-10101001-10011011
+// CHECK-INST: smops   za3.s, p2/m, p5/m, z12.h, z11.h
+// CHECK-ENCODING: [0x9b,0xa9,0x8b,0xa0]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a08ba99b <unknown>
+
diff --git a/llvm/test/MC/AArch64/SME2/umopa-diagnostics.s b/llvm/test/MC/AArch64/SME2/umopa-diagnostics.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/umopa-diagnostics.s
@@ -0,0 +1,35 @@
+// RUN: not llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 2>&1 < %s | FileCheck %s
+
+// --------------------------------------------------------------------------//
+// Invalid tile
+
+umopa za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: umopa za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid predicate
+
+umopa za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: umopa za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+umopa za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid restricted predicate register, expected p0..p7 (without element suffix)
+// CHECK-NEXT: umopa za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid suffixes
+
+umopa za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid matrix operand, expected za[0-3].s
+// CHECK-NEXT: umopa za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+umopa za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid element width
+// CHECK-NEXT: za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
diff --git a/llvm/test/MC/AArch64/SME2/umopa.s b/llvm/test/MC/AArch64/SME2/umopa.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/umopa.s
@@ -0,0 +1,86 @@
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+// RUN: not llvm-mc -triple=aarch64 -show-encoding < %s 2>&1 \
+// RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d --mattr=+sme2 - | FileCheck %s --check-prefix=CHECK-INST
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d - | FileCheck %s --check-prefix=CHECK-UNKNOWN
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | sed '/.text/d' | sed 's/.*encoding: //g' \
+// RUN:        | llvm-mc -triple=aarch64 -mattr=+sme2 -disassemble -show-encoding \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+
+
+umopa   za0.s, p0/m, p0/m, z0.h, z0.h  // 10100001-10000000-00000000-00001000
+// CHECK-INST: umopa   za0.s, p0/m, p0/m, z0.h, z0.h
+// CHECK-ENCODING: [0x08,0x00,0x80,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a1800008 <unknown>
+
+umopa   za1.s, p5/m, p2/m, z10.h, z21.h  // 10100001-10010101-01010101-01001001
+// CHECK-INST: umopa   za1.s, p5/m, p2/m, z10.h, z21.h
+// CHECK-ENCODING: [0x49,0x55,0x95,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a1955549 <unknown>
+
+umopa   za3.s, p3/m, p7/m, z13.h, z8.h  // 10100001-10001000-11101101-10101011
+// CHECK-INST: umopa   za3.s, p3/m, p7/m, z13.h, z8.h
+// CHECK-ENCODING: [0xab,0xed,0x88,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a188edab <unknown>
+
+umopa   za3.s, p7/m, p7/m, z31.h, z31.h  // 10100001-10011111-11111111-11101011
+// CHECK-INST: umopa   za3.s, p7/m, p7/m, z31.h, z31.h
+// CHECK-ENCODING: [0xeb,0xff,0x9f,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a19fffeb <unknown>
+
+umopa   za1.s, p3/m, p0/m, z17.h, z16.h  // 10100001-10010000-00001110-00101001
+// CHECK-INST: umopa   za1.s, p3/m, p0/m, z17.h, z16.h
+// CHECK-ENCODING: [0x29,0x0e,0x90,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a1900e29 <unknown>
+
+umopa   za1.s, p1/m, p4/m, z1.h, z30.h  // 10100001-10011110-10000100-00101001
+// CHECK-INST: umopa   za1.s, p1/m, p4/m, z1.h, z30.h
+// CHECK-ENCODING: [0x29,0x84,0x9e,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a19e8429 <unknown>
+
+umopa   za0.s, p5/m, p2/m, z19.h, z20.h  // 10100001-10010100-01010110-01101000
+// CHECK-INST: umopa   za0.s, p5/m, p2/m, z19.h, z20.h
+// CHECK-ENCODING: [0x68,0x56,0x94,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a1945668 <unknown>
+
+umopa   za0.s, p6/m, p0/m, z12.h, z2.h  // 10100001-10000010-00011001-10001000
+// CHECK-INST: umopa   za0.s, p6/m, p0/m, z12.h, z2.h
+// CHECK-ENCODING: [0x88,0x19,0x82,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a1821988 <unknown>
+
+umopa   za1.s, p2/m, p6/m, z1.h, z26.h  // 10100001-10011010-11001000-00101001
+// CHECK-INST: umopa   za1.s, p2/m, p6/m, z1.h, z26.h
+// CHECK-ENCODING: [0x29,0xc8,0x9a,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a19ac829 <unknown>
+
+umopa   za1.s, p2/m, p0/m, z22.h, z30.h  // 10100001-10011110-00001010-11001001
+// CHECK-INST: umopa   za1.s, p2/m, p0/m, z22.h, z30.h
+// CHECK-ENCODING: [0xc9,0x0a,0x9e,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a19e0ac9 <unknown>
+
+umopa   za2.s, p5/m, p7/m, z9.h, z1.h  // 10100001-10000001-11110101-00101010
+// CHECK-INST: umopa   za2.s, p5/m, p7/m, z9.h, z1.h
+// CHECK-ENCODING: [0x2a,0xf5,0x81,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a181f52a <unknown>
+
+umopa   za3.s, p2/m, p5/m, z12.h, z11.h  // 10100001-10001011-10101001-10001011
+// CHECK-INST: umopa   za3.s, p2/m, p5/m, z12.h, z11.h
+// CHECK-ENCODING: [0x8b,0xa9,0x8b,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a18ba98b <unknown>
+
diff --git a/llvm/test/MC/AArch64/SME2/umops-diagnostics.s b/llvm/test/MC/AArch64/SME2/umops-diagnostics.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/umops-diagnostics.s
@@ -0,0 +1,35 @@
+// RUN: not llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 2>&1 < %s | FileCheck %s
+
+// --------------------------------------------------------------------------//
+// Invalid tile
+
+umops za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: umops za8.s, p0/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid predicate
+
+umops za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: umops za0.s, p0/z, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+umops za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid restricted predicate register, expected p0..p7 (without element suffix)
+// CHECK-NEXT: umops za0.s, p15/m, p0/m, z0.s, z0.s
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid suffixes
+
+umops za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid matrix operand, expected za[0-3].s
+// CHECK-NEXT: umops za0.d, p0/z, p0/m, z0.d, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+umops za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid element width
+// CHECK-NEXT: za0.s, p0/m, p0/m, z0.s, z0.d
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
diff --git a/llvm/test/MC/AArch64/SME2/umops.s b/llvm/test/MC/AArch64/SME2/umops.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/MC/AArch64/SME2/umops.s
@@ -0,0 +1,86 @@
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+// RUN: not llvm-mc -triple=aarch64 -show-encoding < %s 2>&1 \
+// RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d --mattr=+sme2 - | FileCheck %s --check-prefix=CHECK-INST
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sme2 < %s \
+// RUN:        | llvm-objdump -d - | FileCheck %s --check-prefix=CHECK-UNKNOWN
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sme2 < %s \
+// RUN:        | sed '/.text/d' | sed 's/.*encoding: //g' \
+// RUN:        | llvm-mc -triple=aarch64 -mattr=+sme2 -disassemble -show-encoding \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+
+
+umops   za0.s, p0/m, p0/m, z0.h, z0.h  // 10100001-10000000-00000000-00011000
+// CHECK-INST: umops   za0.s, p0/m, p0/m, z0.h, z0.h
+// CHECK-ENCODING: [0x18,0x00,0x80,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a1800018 <unknown>
+
+umops   za1.s, p5/m, p2/m, z10.h, z21.h  // 10100001-10010101-01010101-01011001
+// CHECK-INST: umops   za1.s, p5/m, p2/m, z10.h, z21.h
+// CHECK-ENCODING: [0x59,0x55,0x95,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a1955559 <unknown>
+
+umops   za3.s, p3/m, p7/m, z13.h, z8.h  // 10100001-10001000-11101101-10111011
+// CHECK-INST: umops   za3.s, p3/m, p7/m, z13.h, z8.h
+// CHECK-ENCODING: [0xbb,0xed,0x88,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a188edbb <unknown>
+
+umops   za3.s, p7/m, p7/m, z31.h, z31.h  // 10100001-10011111-11111111-11111011
+// CHECK-INST: umops   za3.s, p7/m, p7/m, z31.h, z31.h
+// CHECK-ENCODING: [0xfb,0xff,0x9f,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a19ffffb <unknown>
+
+umops   za1.s, p3/m, p0/m, z17.h, z16.h  // 10100001-10010000-00001110-00111001
+// CHECK-INST: umops   za1.s, p3/m, p0/m, z17.h, z16.h
+// CHECK-ENCODING: [0x39,0x0e,0x90,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a1900e39 <unknown>
+
+umops   za1.s, p1/m, p4/m, z1.h, z30.h  // 10100001-10011110-10000100-00111001
+// CHECK-INST: umops   za1.s, p1/m, p4/m, z1.h, z30.h
+// CHECK-ENCODING: [0x39,0x84,0x9e,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a19e8439 <unknown>
+
+umops   za0.s, p5/m, p2/m, z19.h, z20.h  // 10100001-10010100-01010110-01111000
+// CHECK-INST: umops   za0.s, p5/m, p2/m, z19.h, z20.h
+// CHECK-ENCODING: [0x78,0x56,0x94,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a1945678 <unknown>
+
+umops   za0.s, p6/m, p0/m, z12.h, z2.h  // 10100001-10000010-00011001-10011000
+// CHECK-INST: umops   za0.s, p6/m, p0/m, z12.h, z2.h
+// CHECK-ENCODING: [0x98,0x19,0x82,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a1821998 <unknown>
+
+umops   za1.s, p2/m, p6/m, z1.h, z26.h  // 10100001-10011010-11001000-00111001
+// CHECK-INST: umops   za1.s, p2/m, p6/m, z1.h, z26.h
+// CHECK-ENCODING: [0x39,0xc8,0x9a,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a19ac839 <unknown>
+
+umops   za1.s, p2/m, p0/m, z22.h, z30.h  // 10100001-10011110-00001010-11011001
+// CHECK-INST: umops   za1.s, p2/m, p0/m, z22.h, z30.h
+// CHECK-ENCODING: [0xd9,0x0a,0x9e,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a19e0ad9 <unknown>
+
+umops   za2.s, p5/m, p7/m, z9.h, z1.h  // 10100001-10000001-11110101-00111010
+// CHECK-INST: umops   za2.s, p5/m, p7/m, z9.h, z1.h
+// CHECK-ENCODING: [0x3a,0xf5,0x81,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a181f53a <unknown>
+
+umops   za3.s, p2/m, p5/m, z12.h, z11.h  // 10100001-10001011-10101001-10011011
+// CHECK-INST: umops   za3.s, p2/m, p5/m, z12.h, z11.h
+// CHECK-ENCODING: [0x9b,0xa9,0x8b,0xa1]
+// CHECK-ERROR: instruction requires: sme2
+// CHECK-UNKNOWN: a18ba99b <unknown>
+