Index: lib/Target/AArch64/AArch64SVEInstrInfo.td
===================================================================
--- lib/Target/AArch64/AArch64SVEInstrInfo.td
+++ lib/Target/AArch64/AArch64SVEInstrInfo.td
@@ -242,6 +242,52 @@
   defm ST1W_D : sve_mem_cst_ss<0b1011, "st1w", Z_d, ZPR64, GPR64NoXZRshifted32>;
   defm ST1D   : sve_mem_cst_ss<0b1111, "st1d", Z_d, ZPR64, GPR64NoXZRshifted64>;
 
+  // Scatters using unscaled 32-bit offsets, e.g.
+  //    st1h z0.s, p0, [x0, z0.s, uxtw]
+  // and unpacked:
+  //    st1h z0.d, p0, [x0, z0.d, uxtw]
+  defm SST1B_D : sve_mem_sst_sv_32_unscaled<0b000, "st1b", Z_d, ZPR64, ZPR64ExtSXTW8Only, ZPR64ExtUXTW8Only>;
+  defm SST1B_S : sve_mem_sst_sv_32_unscaled<0b001, "st1b", Z_s, ZPR32, ZPR32ExtSXTW8Only, ZPR32ExtUXTW8Only>;
+  defm SST1H_D : sve_mem_sst_sv_32_unscaled<0b010, "st1h", Z_d, ZPR64, ZPR64ExtSXTW8, ZPR64ExtUXTW8>;
+  defm SST1H_S : sve_mem_sst_sv_32_unscaled<0b011, "st1h", Z_s, ZPR32, ZPR32ExtSXTW8, ZPR32ExtUXTW8>;
+  defm SST1W_D : sve_mem_sst_sv_32_unscaled<0b100, "st1w", Z_d, ZPR64, ZPR64ExtSXTW8, ZPR64ExtUXTW8>;
+  defm SST1W   : sve_mem_sst_sv_32_unscaled<0b101, "st1w", Z_s, ZPR32, ZPR32ExtSXTW8, ZPR32ExtUXTW8>;
+  defm SST1D   : sve_mem_sst_sv_32_unscaled<0b110, "st1d", Z_d, ZPR64, ZPR64ExtSXTW8, ZPR64ExtUXTW8>;
+
+  // Scatters using scaled 32-bit offsets, e.g.
+  //    st1h z0.s, p0, [x0, z0.s, uxtw #1]
+  // and unpacked:
+  //    st1h z0.d, p0, [x0, z0.d, uxtw #1]
+  defm SST1H_D : sve_mem_sst_sv_32_scaled<0b010, "st1h", Z_d, ZPR64, ZPR64ExtSXTW16, ZPR64ExtUXTW16>;
+  defm SST1H_S : sve_mem_sst_sv_32_scaled<0b011, "st1h", Z_s, ZPR32, ZPR32ExtSXTW16, ZPR32ExtUXTW16>;
+  defm SST1W_D : sve_mem_sst_sv_32_scaled<0b100, "st1w", Z_d, ZPR64, ZPR64ExtSXTW32, ZPR64ExtUXTW32>;
+  defm SST1W   : sve_mem_sst_sv_32_scaled<0b101, "st1w", Z_s, ZPR32, ZPR32ExtSXTW32, ZPR32ExtUXTW32>;
+  defm SST1D   : sve_mem_sst_sv_32_scaled<0b110, "st1d", Z_d, ZPR64, ZPR64ExtSXTW64, ZPR64ExtUXTW64>;
+
+  // Scatters using 32/64-bit pointers with offset, e.g.
+  //    st1h z0.s, p0, [z0.s, #16]
+  //    st1h z0.d, p0, [z0.d, #16]
+  defm SST1B_D : sve_mem_sst_vi_ptrs<0b000, "st1b", Z_d, ZPR64, imm0_31>;
+  defm SST1B_S : sve_mem_sst_vi_ptrs<0b001, "st1b", Z_s, ZPR32, imm0_31>;
+  defm SST1H_D : sve_mem_sst_vi_ptrs<0b010, "st1h", Z_d, ZPR64, uimm5s2>;
+  defm SST1H_S : sve_mem_sst_vi_ptrs<0b011, "st1h", Z_s, ZPR32, uimm5s2>;
+  defm SST1W_D : sve_mem_sst_vi_ptrs<0b100, "st1w", Z_d, ZPR64, uimm5s4>;
+  defm SST1W   : sve_mem_sst_vi_ptrs<0b101, "st1w", Z_s, ZPR32, uimm5s4>;
+  defm SST1D   : sve_mem_sst_vi_ptrs<0b110, "st1d", Z_d, ZPR64, uimm5s8>;
+
+  // Scatters using unscaled 64-bit offsets, e.g.
+  //    st1h z0.d, p0, [x0, z0.d]
+  defm SST1B_D : sve_mem_sst_sv_64_unscaled<0b00, "st1b">;
+  defm SST1H_D : sve_mem_sst_sv_64_unscaled<0b01, "st1h">;
+  defm SST1W_D : sve_mem_sst_sv_64_unscaled<0b10, "st1w">;
+  defm SST1D   : sve_mem_sst_sv_64_unscaled<0b11, "st1d">;
+
+  // Scatters using scaled 64-bit offsets, e.g.
+  //    st1h z0.d, p0, [x0, z0.d, lsl #1]
+  defm SST1H_D_SCALED : sve_mem_sst_sv_64_scaled<0b01, "st1h", ZPR64ExtLSL16>;
+  defm SST1W_D_SCALED : sve_mem_sst_sv_64_scaled<0b10, "st1w", ZPR64ExtLSL32>;
+  defm SST1D_SCALED   : sve_mem_sst_sv_64_scaled<0b11, "st1d", ZPR64ExtLSL64>;
+
  // ST{2,3,4}{B,H,W,D} with immediate
   defm ST2B_IMM : sve_mem_est_si<0b00, 0b01, ZZ_b,   "st2b", simm4s2>;
   defm ST3B_IMM : sve_mem_est_si<0b00, 0b10, ZZZ_b,  "st3b", simm4s3>;
Index: lib/Target/AArch64/SVEInstrFormats.td
===================================================================
--- lib/Target/AArch64/SVEInstrFormats.td
+++ lib/Target/AArch64/SVEInstrFormats.td
@@ -590,6 +590,132 @@
                   (!cast<Instruction>(NAME) zprty:$Zt, PPR3bAny:$Pg, GPR64sp:$Rn, gprty:$Rm), 0>;
 }
 
+class sve_mem_sst_sv<bits<3> opc, bit xs, bit scaled, string asm,
+                     RegisterOperand VecList, RegisterOperand zprext>
+: I<(outs), (ins VecList:$Zt, PPR3bAny:$Pg, GPR64sp:$Rn, zprext:$Zm),
+  asm, "\t$Zt, $Pg, [$Rn, $Zm]",
+  "",
+  []>, Sched<[]> {
+  bits<3> Pg;
+  bits<5> Rn;
+  bits<5> Zm;
+  bits<5> Zt;
+  let Inst{31-25} = 0b1110010;
+  let Inst{24-22} = opc;
+  let Inst{21}    = scaled;
+  let Inst{20-16} = Zm;
+  let Inst{15}    = 0b1;
+  let Inst{14}    = xs;
+  let Inst{13}    = 0;
+  let Inst{12-10} = Pg;
+  let Inst{9-5}   = Rn;
+  let Inst{4-0}   = Zt;
+
+  let mayStore = 1;
+}
+
+multiclass sve_mem_sst_sv_32_scaled<bits<3> opc, string asm,
+                                    RegisterOperand listty,
+                                    ZPRRegOp zprty,
+                                    RegisterOperand sxtw_opnd,
+                                    RegisterOperand uxtw_opnd > {
+  def _UXTW_SCALED : sve_mem_sst_sv<opc, 0, 1, asm, listty, uxtw_opnd>;
+  def _SXTW_SCALED : sve_mem_sst_sv<opc, 1, 1, asm, listty, sxtw_opnd>;
+
+  def : InstAlias<asm # "\t$Zt, $Pg, [$Rn, $Zm]",
+                 (!cast<Instruction>(NAME # _UXTW_SCALED) zprty:$Zt, PPR3bAny:$Pg, GPR64sp:$Rn, uxtw_opnd:$Zm), 0>;
+  def : InstAlias<asm # "\t$Zt, $Pg, [$Rn, $Zm]",
+                 (!cast<Instruction>(NAME # _SXTW_SCALED) zprty:$Zt, PPR3bAny:$Pg, GPR64sp:$Rn, sxtw_opnd:$Zm), 0>;
+}
+
+multiclass sve_mem_sst_sv_32_unscaled<bits<3> opc, string asm,
+                                      RegisterOperand listty,
+                                      ZPRRegOp zprty,
+                                      RegisterOperand sxtw_opnd,
+                                      RegisterOperand uxtw_opnd> {
+  def _UXTW : sve_mem_sst_sv<opc, 0, 0, asm, listty, uxtw_opnd>;
+  def _SXTW : sve_mem_sst_sv<opc, 1, 0, asm, listty, sxtw_opnd>;
+
+  def : InstAlias<asm # "\t$Zt, $Pg, [$Rn, $Zm]",
+                 (!cast<Instruction>(NAME # _UXTW) zprty:$Zt, PPR3bAny:$Pg, GPR64sp:$Rn, uxtw_opnd:$Zm), 0>;
+  def : InstAlias<asm # "\t$Zt, $Pg, [$Rn, $Zm]",
+                 (!cast<Instruction>(NAME # _SXTW) zprty:$Zt, PPR3bAny:$Pg, GPR64sp:$Rn, sxtw_opnd:$Zm), 0>;
+}
+
+class sve_mem_sst_sv2<bits<2> msz, bit scaled, string asm,
+                      RegisterOperand zprext>
+: I<(outs), (ins Z_d:$Zt, PPR3bAny:$Pg, GPR64sp:$Rn, zprext:$Zm),
+  asm, "\t$Zt, $Pg, [$Rn, $Zm]",
+  "",
+  []>, Sched<[]> {
+  bits<3> Pg;
+  bits<5> Rn;
+  bits<5> Zm;
+  bits<5> Zt;
+  let Inst{31-25} = 0b1110010;
+  let Inst{24-23} = msz;
+  let Inst{22}    = 0b0;
+  let Inst{21}    = scaled;
+  let Inst{20-16} = Zm;
+  let Inst{15-13} = 0b101;
+  let Inst{12-10} = Pg;
+  let Inst{9-5}   = Rn;
+  let Inst{4-0}   = Zt;
+
+  let mayStore = 1;
+}
+
+multiclass sve_mem_sst_sv_64_scaled<bits<2> msz, string asm,
+                                    RegisterOperand zprext> {
+  def "" : sve_mem_sst_sv2<msz, 1, asm, zprext>;
+
+  def : InstAlias<asm # "\t$Zt, $Pg, [$Rn, $Zm]",
+                 (!cast<Instruction>(NAME) ZPR64:$Zt, PPR3bAny:$Pg, GPR64sp:$Rn, zprext:$Zm), 0>;
+
+}
+
+multiclass sve_mem_sst_sv_64_unscaled<bits<2> msz, string asm> {
+  def "" : sve_mem_sst_sv2<msz, 0, asm, ZPR64ExtLSL8>;
+
+  def : InstAlias<asm # "\t$Zt, $Pg, [$Rn, $Zm]",
+                 (!cast<Instruction>(NAME) ZPR64:$Zt, PPR3bAny:$Pg, GPR64sp:$Rn, ZPR64ExtLSL8:$Zm), 0>;
+}
+
+class sve_mem_sst_vi<bits<3> opc, string asm, ZPRRegOp zprty,
+                     RegisterOperand VecList, Operand imm_ty>
+: I<(outs), (ins VecList:$Zt, PPR3bAny:$Pg, zprty:$Zn, imm_ty:$imm5),
+  asm, "\t$Zt, $Pg, [$Zn, $imm5]",
+  "",
+  []>, Sched<[]> {
+  bits<3> Pg;
+  bits<5> imm5;
+  bits<5> Zn;
+  bits<5> Zt;
+  let Inst{31-25} = 0b1110010;
+  let Inst{24-23} = opc{2-1};
+  let Inst{22}    = 0b1;
+  let Inst{21}    = opc{0};
+  let Inst{20-16} = imm5;
+  let Inst{15-13} = 0b101;
+  let Inst{12-10} = Pg;
+  let Inst{9-5}   = Zn;
+  let Inst{4-0}   = Zt;
+
+  let mayStore = 1;
+}
+
+multiclass sve_mem_sst_vi_ptrs<bits<3> opc, string asm, RegisterOperand listty,
+                               ZPRRegOp zprty, Operand imm_ty> {
+  def _IMM : sve_mem_sst_vi<opc, asm, zprty, listty, imm_ty>;
+
+  def : InstAlias<asm # "\t$Zt, $Pg, [$Zn]",
+                  (!cast<Instruction>(NAME # _IMM) zprty:$Zt, PPR3bAny:$Pg, zprty:$Zn, 0), 0>;
+  def : InstAlias<asm # "\t$Zt, $Pg, [$Zn, $imm5]",
+                  (!cast<Instruction>(NAME # _IMM) zprty:$Zt, PPR3bAny:$Pg, zprty:$Zn, imm_ty:$imm5), 0>;
+  def : InstAlias<asm # "\t$Zt, $Pg, [$Zn]",
+                  (!cast<Instruction>(NAME # _IMM) listty:$Zt, PPR3bAny:$Pg, zprty:$Zn, 0), 1>;
+}
+
 //===----------------------------------------------------------------------===//
 // SVE Permute - Predicates Group
 //===----------------------------------------------------------------------===//
Index: test/MC/AArch64/SVE/st1b-diagnostics.s
===================================================================
--- test/MC/AArch64/SVE/st1b-diagnostics.s
+++ test/MC/AArch64/SVE/st1b-diagnostics.s
@@ -107,3 +107,71 @@
 // CHECK: [[@LINE-1]]:{{[0-9]+}}: error: register must be x0..x30 without shift
 // CHECK-NEXT: st1b z0.b, p0, [x0, w0, uxtw]
 // CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+
+// --------------------------------------------------------------------------//
+// Invalid scalar + vector addressing modes
+
+st1b z0.d, p0, [x0, z0.b]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (uxtw|sxtw)'
+// CHECK-NEXT: st1b z0.d, p0, [x0, z0.b]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1b z0.d, p0, [x0, z0.h]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (uxtw|sxtw)'
+// CHECK-NEXT: st1b z0.d, p0, [x0, z0.h]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1b z0.d, p0, [x0, z0.s]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (uxtw|sxtw)'
+// CHECK-NEXT: st1b z0.d, p0, [x0, z0.s]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1b z0.s, p0, [x0, z0.s]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].s, (uxtw|sxtw)'
+// CHECK-NEXT: st1b z0.s, p0, [x0, z0.s]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1b z0.s, p0, [x0, z0.s, uxtw #1]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].s, (uxtw|sxtw)'
+// CHECK-NEXT: st1b z0.s, p0, [x0, z0.s, uxtw #1]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1b z0.s, p0, [x0, z0.s, lsl #0]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].s, (uxtw|sxtw)'
+// CHECK-NEXT: st1b z0.s, p0, [x0, z0.s, lsl #0]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1b z0.d, p0, [x0, z0.d, lsl #1]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (uxtw|sxtw)'
+// CHECK-NEXT: st1b z0.d, p0, [x0, z0.d, lsl #1]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1b z0.d, p0, [x0, z0.d, sxtw #1]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (uxtw|sxtw)'
+// CHECK-NEXT: st1b z0.d, p0, [x0, z0.d, sxtw #1]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+
+// --------------------------------------------------------------------------//
+// Invalid vector + immediate addressing modes
+
+st1b z0.s, p0, [z0.s, #-1]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: immediate must be an integer in range [0, 31].
+// CHECK-NEXT: st1b z0.s, p0, [z0.s, #-1]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1b z0.s, p0, [z0.s, #32]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: immediate must be an integer in range [0, 31].
+// CHECK-NEXT: st1b z0.s, p0, [z0.s, #32]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1b z0.d, p0, [z0.d, #-1]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: immediate must be an integer in range [0, 31].
+// CHECK-NEXT: st1b z0.d, p0, [z0.d, #-1]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1b z0.d, p0, [z0.d, #32]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: immediate must be an integer in range [0, 31].
+// CHECK-NEXT: st1b z0.d, p0, [z0.d, #32]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
Index: test/MC/AArch64/SVE/st1b.s
===================================================================
--- test/MC/AArch64/SVE/st1b.s
+++ test/MC/AArch64/SVE/st1b.s
@@ -126,3 +126,45 @@
 // CHECK-ENCODING: [0x00,0x40,0x60,0xe4]
 // CHECK-ERROR: instruction requires: sve
 // CHECK-UNKNOWN: 00 40 60 e4 <unknown>
+
+st1b    { z0.s }, p0, [x0, z0.s, uxtw]
+// CHECK-INST: st1b    { z0.s }, p0, [x0, z0.s, uxtw]
+// CHECK-ENCODING: [0x00,0x80,0x40,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 40 e4 <unknown>
+
+st1b    { z0.s }, p0, [x0, z0.s, sxtw]
+// CHECK-INST: st1b    { z0.s }, p0, [x0, z0.s, sxtw]
+// CHECK-ENCODING: [0x00,0xc0,0x40,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 40 e4 <unknown>
+
+st1b    { z0.d }, p0, [x0, z0.d, uxtw]
+// CHECK-INST: st1b    { z0.d }, p0, [x0, z0.d, uxtw]
+// CHECK-ENCODING: [0x00,0x80,0x00,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 00 e4 <unknown>
+
+st1b    { z0.d }, p0, [x0, z0.d, sxtw]
+// CHECK-INST: st1b    { z0.d }, p0, [x0, z0.d, sxtw]
+// CHECK-ENCODING: [0x00,0xc0,0x00,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 00 e4 <unknown>
+
+st1b    { z0.d }, p0, [x0, z0.d]
+// CHECK-INST: st1b    { z0.d }, p0, [x0, z0.d]
+// CHECK-ENCODING: [0x00,0xa0,0x00,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 a0 00 e4 <unknown>
+
+st1b    { z31.s }, p7, [z31.s, #31]
+// CHECK-INST: st1b    { z31.s }, p7, [z31.s, #31]
+// CHECK-ENCODING: [0xff,0xbf,0x7f,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: ff bf 7f e4 <unknown>
+
+st1b    { z31.d }, p7, [z31.d, #31]
+// CHECK-INST: st1b    { z31.d }, p7, [z31.d, #31]
+// CHECK-ENCODING: [0xff,0xbf,0x5f,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: ff bf 5f e4 <unknown>
Index: test/MC/AArch64/SVE/st1d-diagnostics.s
===================================================================
--- test/MC/AArch64/SVE/st1d-diagnostics.s
+++ test/MC/AArch64/SVE/st1d-diagnostics.s
@@ -68,3 +68,66 @@
 // CHECK: [[@LINE-1]]:{{[0-9]+}}: error: register must be x0..x30 with required shift 'lsl #3'
 // CHECK-NEXT: st1d z0.d, p0, [x0, w0, uxtw]
 // CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+
+// --------------------------------------------------------------------------//
+// Invalid scalar + vector addressing modes
+
+st1d z0.d, p0, [x0, z0.s]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (uxtw|sxtw)'
+// CHECK-NEXT: st1d z0.d, p0, [x0, z0.s]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1d z0.d, p0, [x0, z0.d, uxtw #2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (lsl|uxtw|sxtw) #3'
+// CHECK-NEXT: st1d z0.d, p0, [x0, z0.d, uxtw #2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1d z0.d, p0, [x0, z0.d, lsl #2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (lsl|uxtw|sxtw) #3'
+// CHECK-NEXT: st1d z0.d, p0, [x0, z0.d, lsl #2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1d z0.d, p0, [x0, z0.d, lsl]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: expected #imm after shift specifier
+// CHECK-NEXT: st1d z0.d, p0, [x0, z0.d, lsl]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+
+// --------------------------------------------------------------------------//
+// Invalid vector + immediate addressing modes
+
+st1d z0.s, p0, [z0.s]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: st1d z0.s, p0, [z0.s]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1d z0.s, p0, [z0.s, #8]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: st1d z0.s, p0, [z0.s, #8]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1d z0.d, p0, [z0.d, #-1]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 8 in range [0, 248].
+// CHECK-NEXT: st1d z0.d, p0, [z0.d, #-1]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1d z0.d, p0, [z0.d, #-8]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 8 in range [0, 248].
+// CHECK-NEXT: st1d z0.d, p0, [z0.d, #-8]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1d z0.d, p0, [z0.d, #249]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 8 in range [0, 248].
+// CHECK-NEXT: st1d z0.d, p0, [z0.d, #249]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1d z0.d, p0, [z0.d, #256]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 8 in range [0, 248].
+// CHECK-NEXT: st1d z0.d, p0, [z0.d, #256]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1d z0.d, p0, [z0.d, #3]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 8 in range [0, 248].
+// CHECK-NEXT: st1d z0.d, p0, [z0.d, #3]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
Index: test/MC/AArch64/SVE/st1d.s
===================================================================
--- test/MC/AArch64/SVE/st1d.s
+++ test/MC/AArch64/SVE/st1d.s
@@ -36,3 +36,45 @@
 // CHECK-ENCODING: [0x00,0x40,0xe0,0xe5]
 // CHECK-ERROR: instruction requires: sve
 // CHECK-UNKNOWN: 00 40 e0 e5 <unknown>
+
+st1d    { z0.d }, p0, [x0, z0.d, uxtw]
+// CHECK-INST: st1d    { z0.d }, p0, [x0, z0.d, uxtw]
+// CHECK-ENCODING: [0x00,0x80,0x80,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 80 e5 <unknown>
+
+st1d    { z0.d }, p0, [x0, z0.d, sxtw]
+// CHECK-INST: st1d    { z0.d }, p0, [x0, z0.d, sxtw]
+// CHECK-ENCODING: [0x00,0xc0,0x80,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 80 e5 <unknown>
+
+st1d    { z0.d }, p0, [x0, z0.d, uxtw #3]
+// CHECK-INST: st1d    { z0.d }, p0, [x0, z0.d, uxtw #3]
+// CHECK-ENCODING: [0x00,0x80,0xa0,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 a0 e5 <unknown>
+
+st1d    { z0.d }, p0, [x0, z0.d, sxtw #3]
+// CHECK-INST: st1d    { z0.d }, p0, [x0, z0.d, sxtw #3]
+// CHECK-ENCODING: [0x00,0xc0,0xa0,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 a0 e5 <unknown>
+
+st1d    { z0.d }, p0, [x0, z0.d]
+// CHECK-INST: st1d    { z0.d }, p0, [x0, z0.d]
+// CHECK-ENCODING: [0x00,0xa0,0x80,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 a0 80 e5 <unknown>
+
+st1d    { z0.d }, p0, [x0, z0.d, lsl #3]
+// CHECK-INST: st1d    { z0.d }, p0, [x0, z0.d, lsl #3]
+// CHECK-ENCODING: [0x00,0xa0,0xa0,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 a0 a0 e5 <unknown>
+
+st1d    { z31.d }, p7, [z31.d, #248]
+// CHECK-INST: st1d    { z31.d }, p7, [z31.d, #248]
+// CHECK-ENCODING: [0xff,0xbf,0xdf,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: ff bf df e5 <unknown>
Index: test/MC/AArch64/SVE/st1h-diagnostics.s
===================================================================
--- test/MC/AArch64/SVE/st1h-diagnostics.s
+++ test/MC/AArch64/SVE/st1h-diagnostics.s
@@ -97,3 +97,95 @@
 // CHECK: [[@LINE-1]]:{{[0-9]+}}: error: register must be x0..x30 with required shift 'lsl #1'
 // CHECK-NEXT: st1h z0.h, p0, [x0, w0, uxtw]
 // CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+
+// --------------------------------------------------------------------------//
+// Invalid scalar + vector addressing modes
+
+st1h z0.d, p0, [x0, z0.h]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (uxtw|sxtw)'
+// CHECK-NEXT: st1h z0.d, p0, [x0, z0.h]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.d, p0, [x0, z0.s]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (uxtw|sxtw)'
+// CHECK-NEXT: st1h z0.d, p0, [x0, z0.s]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.s, p0, [x0, z0.s]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].s, (uxtw|sxtw)'
+// CHECK-NEXT: st1h z0.s, p0, [x0, z0.s]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.s, p0, [x0, z0.s, uxtw #2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].s, (uxtw|sxtw) #1'
+// CHECK-NEXT: st1h z0.s, p0, [x0, z0.s, uxtw #2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.s, p0, [x0, z0.s, lsl #1]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].s, (uxtw|sxtw) #1'
+// CHECK-NEXT: st1h z0.s, p0, [x0, z0.s, lsl #1]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.d, p0, [x0, z0.d, lsl #2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (lsl|uxtw|sxtw) #1'
+// CHECK-NEXT: st1h z0.d, p0, [x0, z0.d, lsl #2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.d, p0, [x0, z0.d, sxtw #2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (lsl|uxtw|sxtw) #1'
+// CHECK-NEXT: st1h z0.d, p0, [x0, z0.d, sxtw #2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// --------------------------------------------------------------------------//
+// Invalid vector + immediate addressing modes
+
+st1h z0.s, p0, [z0.s, #-1]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 2 in range [0, 62].
+// CHECK-NEXT: st1h z0.s, p0, [z0.s, #-1]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.s, p0, [z0.s, #-2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 2 in range [0, 62].
+// CHECK-NEXT: st1h z0.s, p0, [z0.s, #-2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.s, p0, [z0.s, #63]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 2 in range [0, 62].
+// CHECK-NEXT: st1h z0.s, p0, [z0.s, #63]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.s, p0, [z0.s, #64]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 2 in range [0, 62].
+// CHECK-NEXT: st1h z0.s, p0, [z0.s, #64]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.s, p0, [z0.s, #3]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 2 in range [0, 62].
+// CHECK-NEXT: st1h z0.s, p0, [z0.s, #3]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.d, p0, [z0.d, #-1]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 2 in range [0, 62].
+// CHECK-NEXT: st1h z0.d, p0, [z0.d, #-1]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.d, p0, [z0.d, #-2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 2 in range [0, 62].
+// CHECK-NEXT: st1h z0.d, p0, [z0.d, #-2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.d, p0, [z0.d, #63]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 2 in range [0, 62].
+// CHECK-NEXT: st1h z0.d, p0, [z0.d, #63]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.d, p0, [z0.d, #64]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 2 in range [0, 62].
+// CHECK-NEXT: st1h z0.d, p0, [z0.d, #64]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1h z0.d, p0, [z0.d, #3]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 2 in range [0, 62].
+// CHECK-NEXT: st1h z0.d, p0, [z0.d, #3]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
Index: test/MC/AArch64/SVE/st1h.s
===================================================================
--- test/MC/AArch64/SVE/st1h.s
+++ test/MC/AArch64/SVE/st1h.s
@@ -96,3 +96,75 @@
 // CHECK-ENCODING: [0x00,0x40,0xe0,0xe4]
 // CHECK-ERROR: instruction requires: sve
 // CHECK-UNKNOWN: 00 40 e0 e4 <unknown>
+
+st1h    { z0.s }, p0, [x0, z0.s, uxtw]
+// CHECK-INST: st1h    { z0.s }, p0, [x0, z0.s, uxtw]
+// CHECK-ENCODING: [0x00,0x80,0xc0,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 c0 e4 <unknown>
+
+st1h    { z0.s }, p0, [x0, z0.s, sxtw]
+// CHECK-INST: st1h    { z0.s }, p0, [x0, z0.s, sxtw]
+// CHECK-ENCODING: [0x00,0xc0,0xc0,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 c0 e4 <unknown>
+
+st1h    { z0.d }, p0, [x0, z0.d, uxtw]
+// CHECK-INST: st1h    { z0.d }, p0, [x0, z0.d, uxtw]
+// CHECK-ENCODING: [0x00,0x80,0x80,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 80 e4 <unknown>
+
+st1h    { z0.d }, p0, [x0, z0.d, sxtw]
+// CHECK-INST: st1h    { z0.d }, p0, [x0, z0.d, sxtw]
+// CHECK-ENCODING: [0x00,0xc0,0x80,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 80 e4 <unknown>
+
+st1h    { z0.s }, p0, [x0, z0.s, uxtw #1]
+// CHECK-INST: st1h    { z0.s }, p0, [x0, z0.s, uxtw #1]
+// CHECK-ENCODING: [0x00,0x80,0xe0,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 e0 e4 <unknown>
+
+st1h    { z0.s }, p0, [x0, z0.s, sxtw #1]
+// CHECK-INST: st1h    { z0.s }, p0, [x0, z0.s, sxtw #1]
+// CHECK-ENCODING: [0x00,0xc0,0xe0,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 e0 e4 <unknown>
+
+st1h    { z0.d }, p0, [x0, z0.d, uxtw #1]
+// CHECK-INST: st1h    { z0.d }, p0, [x0, z0.d, uxtw #1]
+// CHECK-ENCODING: [0x00,0x80,0xa0,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 a0 e4 <unknown>
+
+st1h    { z0.d }, p0, [x0, z0.d, sxtw #1]
+// CHECK-INST: st1h    { z0.d }, p0, [x0, z0.d, sxtw #1]
+// CHECK-ENCODING: [0x00,0xc0,0xa0,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 a0 e4 <unknown>
+
+st1h    { z0.d }, p0, [x0, z0.d]
+// CHECK-INST: st1h    { z0.d }, p0, [x0, z0.d]
+// CHECK-ENCODING: [0x00,0xa0,0x80,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 a0 80 e4 <unknown>
+
+st1h    { z0.d }, p0, [x0, z0.d, lsl #1]
+// CHECK-INST: st1h    { z0.d }, p0, [x0, z0.d, lsl #1]
+// CHECK-ENCODING: [0x00,0xa0,0xa0,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 a0 a0 e4 <unknown>
+
+st1h    { z31.s }, p7, [z31.s, #62]
+// CHECK-INST: st1h    { z31.s }, p7, [z31.s, #62]
+// CHECK-ENCODING: [0xff,0xbf,0xff,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: ff bf ff e4 <unknown>
+
+st1h    { z31.d }, p7, [z31.d, #62]
+// CHECK-INST: st1h    { z31.d }, p7, [z31.d, #62]
+// CHECK-ENCODING: [0xff,0xbf,0xdf,0xe4]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: ff bf df e4 <unknown>
Index: test/MC/AArch64/SVE/st1w-diagnostics.s
===================================================================
--- test/MC/AArch64/SVE/st1w-diagnostics.s
+++ test/MC/AArch64/SVE/st1w-diagnostics.s
@@ -85,3 +85,96 @@
 // CHECK: [[@LINE-1]]:{{[0-9]+}}: error: register must be x0..x30 with required shift 'lsl #2'
 // CHECK-NEXT: st1w z0.s, p0, [x0, w0, uxtw]
 // CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+
+// --------------------------------------------------------------------------//
+// Invalid scalar + vector addressing modes
+
+st1w z0.d, p0, [x0, z0.h]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (uxtw|sxtw)'
+// CHECK-NEXT: st1w z0.d, p0, [x0, z0.h]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.d, p0, [x0, z0.s]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (uxtw|sxtw)'
+// CHECK-NEXT: st1w z0.d, p0, [x0, z0.s]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.s, p0, [x0, z0.s]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].s, (uxtw|sxtw)'
+// CHECK-NEXT: st1w z0.s, p0, [x0, z0.s]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.s, p0, [x0, z0.s, uxtw #3]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].s, (uxtw|sxtw) #2'
+// CHECK-NEXT: st1w z0.s, p0, [x0, z0.s, uxtw #3]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.s, p0, [x0, z0.s, lsl #2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].s, (uxtw|sxtw) #2'
+// CHECK-NEXT: st1w z0.s, p0, [x0, z0.s, lsl #2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.d, p0, [x0, z0.d, lsl #3]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (lsl|uxtw|sxtw) #2'
+// CHECK-NEXT: st1w z0.d, p0, [x0, z0.d, lsl #3]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.d, p0, [x0, z0.d, sxtw #3]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid shift/extend specified, expected 'z[0..31].d, (lsl|uxtw|sxtw) #2'
+// CHECK-NEXT: st1w z0.d, p0, [x0, z0.d, sxtw #3]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+
+// --------------------------------------------------------------------------//
+// Invalid vector + immediate addressing modes
+
+st1w z0.s, p0, [z0.s, #-1]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 4 in range [0, 124].
+// CHECK-NEXT: st1w z0.s, p0, [z0.s, #-1]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.s, p0, [z0.s, #-4]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 4 in range [0, 124].
+// CHECK-NEXT: st1w z0.s, p0, [z0.s, #-4]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.s, p0, [z0.s, #125]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 4 in range [0, 124].
+// CHECK-NEXT: st1w z0.s, p0, [z0.s, #125]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.s, p0, [z0.s, #128]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 4 in range [0, 124].
+// CHECK-NEXT: st1w z0.s, p0, [z0.s, #128]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.s, p0, [z0.s, #3]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 4 in range [0, 124].
+// CHECK-NEXT: st1w z0.s, p0, [z0.s, #3]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.d, p0, [z0.d, #-1]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 4 in range [0, 124].
+// CHECK-NEXT: st1w z0.d, p0, [z0.d, #-1]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.d, p0, [z0.d, #-4]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 4 in range [0, 124].
+// CHECK-NEXT: st1w z0.d, p0, [z0.d, #-4]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.d, p0, [z0.d, #125]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 4 in range [0, 124].
+// CHECK-NEXT: st1w z0.d, p0, [z0.d, #125]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.d, p0, [z0.d, #128]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 4 in range [0, 124].
+// CHECK-NEXT: st1w z0.d, p0, [z0.d, #128]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+st1w z0.d, p0, [z0.d, #3]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: index must be a multiple of 4 in range [0, 124].
+// CHECK-NEXT: st1w z0.d, p0, [z0.d, #3]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
Index: test/MC/AArch64/SVE/st1w.s
===================================================================
--- test/MC/AArch64/SVE/st1w.s
+++ test/MC/AArch64/SVE/st1w.s
@@ -66,3 +66,75 @@
 // CHECK-ENCODING: [0x00,0x40,0x60,0xe5]
 // CHECK-ERROR: instruction requires: sve
 // CHECK-UNKNOWN: 00 40 60 e5 <unknown>
+
+st1w    { z0.s }, p0, [x0, z0.s, uxtw]
+// CHECK-INST: st1w    { z0.s }, p0, [x0, z0.s, uxtw]
+// CHECK-ENCODING: [0x00,0x80,0x40,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 40 e5 <unknown>
+
+st1w    { z0.s }, p0, [x0, z0.s, sxtw]
+// CHECK-INST: st1w    { z0.s }, p0, [x0, z0.s, sxtw]
+// CHECK-ENCODING: [0x00,0xc0,0x40,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 40 e5 <unknown>
+
+st1w    { z0.d }, p0, [x0, z0.d, uxtw]
+// CHECK-INST: st1w    { z0.d }, p0, [x0, z0.d, uxtw]
+// CHECK-ENCODING: [0x00,0x80,0x00,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 00 e5 <unknown>
+
+st1w    { z0.d }, p0, [x0, z0.d, sxtw]
+// CHECK-INST: st1w    { z0.d }, p0, [x0, z0.d, sxtw]
+// CHECK-ENCODING: [0x00,0xc0,0x00,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 00 e5 <unknown>
+
+st1w    { z0.s }, p0, [x0, z0.s, uxtw #2]
+// CHECK-INST: st1w    { z0.s }, p0, [x0, z0.s, uxtw #2]
+// CHECK-ENCODING: [0x00,0x80,0x60,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 60 e5 <unknown>
+
+st1w    { z0.s }, p0, [x0, z0.s, sxtw #2]
+// CHECK-INST: st1w    { z0.s }, p0, [x0, z0.s, sxtw #2]
+// CHECK-ENCODING: [0x00,0xc0,0x60,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 60 e5 <unknown>
+
+st1w    { z0.d }, p0, [x0, z0.d, uxtw #2]
+// CHECK-INST: st1w    { z0.d }, p0, [x0, z0.d, uxtw #2]
+// CHECK-ENCODING: [0x00,0x80,0x20,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 80 20 e5 <unknown>
+
+st1w    { z0.d }, p0, [x0, z0.d, sxtw #2]
+// CHECK-INST: st1w    { z0.d }, p0, [x0, z0.d, sxtw #2]
+// CHECK-ENCODING: [0x00,0xc0,0x20,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 c0 20 e5 <unknown>
+
+st1w    { z0.d }, p0, [x0, z0.d]
+// CHECK-INST: st1w    { z0.d }, p0, [x0, z0.d]
+// CHECK-ENCODING: [0x00,0xa0,0x00,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 a0 00 e5 <unknown>
+
+st1w    { z0.d }, p0, [x0, z0.d, lsl #2]
+// CHECK-INST: st1w    { z0.d }, p0, [x0, z0.d, lsl #2]
+// CHECK-ENCODING: [0x00,0xa0,0x20,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: 00 a0 20 e5 <unknown>
+
+st1w    { z31.s }, p7, [z31.s, #124]
+// CHECK-INST: st1w    { z31.s }, p7, [z31.s, #124]
+// CHECK-ENCODING: [0xff,0xbf,0x7f,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: ff bf 7f e5 <unknown>
+
+st1w    { z31.d }, p7, [z31.d, #124]
+// CHECK-INST: st1w    { z31.d }, p7, [z31.d, #124]
+// CHECK-ENCODING: [0xff,0xbf,0x5f,0xe5]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: ff bf 5f e5 <unknown>