[AArch64][SME2] Add LLVM IR intrinsics for multi-indexed dots

[david-arm]

Summary

Adds intrinsics for the following SME2 instructions:

• sdot (multi-indexed, 2 and 4 vectors, 32-bit and 64-bit ZA)
• udot (multi-indexed, 2 and 4 vectors, 32-bit and 64-bit ZA)
• usdot (multi-indexed, 2 and 4 vectors)
• sudot (multi-indexed, 2 and 4 vectors)
• fdot (multi-indexed, 2 and 4 vectors)
• bfdot (multi-indexed, 2 and 4 vectors)

NOTE: These intrinsics are still in development and are subject to future changes.

[kmclaughlin]

LGTM!

llvm/include/llvm/IR/IntrinsicsAArch64.td

let TargetPrefix = "aarch64" in {
   // 2-way and 4-way multi-vector signed/unsigned integer dot-product
   foreach ty = ["s", "u"] in {
     foreach sz = ["za32", "za64"] in {
       def int_aarch64_sme_ # ty # dot_single_ # sz # _vg1x2 : SME2_Matrix_ArrayVector_VG2_Multi_Single_Intrinsic;
       def int_aarch64_sme_ # ty # dot_single_ # sz # _vg1x4 : SME2_Matrix_ArrayVector_VG4_Multi_Single_Intrinsic;
 
       def int_aarch64_sme_ # ty # dot_ # sz # _vg1x2 : SME2_Matrix_ArrayVector_VG2_Multi_Multi_Intrinsic;
       def int_aarch64_sme_ # ty # dot_ # sz # _vg1x4 : SME2_Matrix_ArrayVector_VG4_Multi_Multi_Intrinsic;
+
+      def int_aarch64_sme_ # ty # dot_lane_ # sz # _vg1x2 : SME2_Matrix_ArrayVector_VG2_Multi_Index_Intrinsic;
+      def int_aarch64_sme_ # ty # dot_lane_ # sz # _vg1x4 : SME2_Matrix_ArrayVector_VG4_Multi_Index_Intrinsic;
     }
   }
 
   foreach ty = ["su", "us"] in {
     def int_aarch64_sme_ # ty # dot_single_za32_vg1x2 : SME2_Matrix_ArrayVector_VG2_Multi_Single_Intrinsic;
     def int_aarch64_sme_ # ty # dot_single_za32_vg1x4 : SME2_Matrix_ArrayVector_VG4_Multi_Single_Intrinsic;
+
+    def int_aarch64_sme_ # ty # dot_lane_za32_vg1x2 : SME2_Matrix_ArrayVector_VG2_Multi_Index_Intrinsic;
+    def int_aarch64_sme_ # ty # dot_lane_za32_vg1x4 : SME2_Matrix_ArrayVector_VG4_Multi_Index_Intrinsic;
   }
 
   def int_aarch64_sme_usdot_za32_vg1x2 : SME2_Matrix_ArrayVector_VG2_Multi_Multi_Intrinsic;
   def int_aarch64_sme_usdot_za32_vg1x4 : SME2_Matrix_ArrayVector_VG4_Multi_Multi_Intrinsic;
 
   // Multi-vector half-precision or bfloat floating-point dot-product
   def int_aarch64_sme_fdot_single_za32_vg1x2 : SME2_Matrix_ArrayVector_VG2_Multi_Single_Intrinsic;
   def int_aarch64_sme_fdot_single_za32_vg1x4 : SME2_Matrix_ArrayVector_VG4_Multi_Single_Intrinsic;
 
   def int_aarch64_sme_fdot_za32_vg1x2 : SME2_Matrix_ArrayVector_VG2_Multi_Multi_Intrinsic;
   def int_aarch64_sme_fdot_za32_vg1x4 : SME2_Matrix_ArrayVector_VG4_Multi_Multi_Intrinsic;
+
+  def int_aarch64_sme_fdot_lane_za32_vg1x2 : SME2_Matrix_ArrayVector_VG2_Multi_Index_Intrinsic;
+  def int_aarch64_sme_fdot_lane_za32_vg1x4 : SME2_Matrix_ArrayVector_VG4_Multi_Index_Intrinsic;
 }

llvm/lib/Target/AArch64/AArch64SMEInstrInfo.td

 defm FCLAMP_VG4_4Z4Z : sme2_fp_clamp_vector_vg4_multi<"fclamp">;
 
 defm SCLAMP_VG2_2Z2Z : sme2_int_clamp_vector_vg2_multi<"sclamp", 0b0>;
 defm SCLAMP_VG4_4Z4Z : sme2_int_clamp_vector_vg4_multi<"sclamp", 0b0>;
 
 defm UCLAMP_VG2_2Z2Z : sme2_int_clamp_vector_vg2_multi<"uclamp", 0b1>;
 defm UCLAMP_VG4_4Z4Z : sme2_int_clamp_vector_vg4_multi<"uclamp", 0b1>;
 
-defm FDOT_VG2_M2ZZI_HtoS : sme2_multi_vec_array_vg2_index_32b<"fdot", 0b1001, ZZ_h_mul_r, ZPR4b16, nxv8f16, null_frag>;
-defm FDOT_VG4_M4ZZI_HtoS : sme2_multi_vec_array_vg4_index_32b<"fdot", 0b1001, ZZZZ_h_mul_r, ZPR4b16, nxv8f16, null_frag>;
+defm FDOT_VG2_M2ZZI_HtoS : sme2_multi_vec_array_vg2_index_32b<"fdot", 0b1001, ZZ_h_mul_r, ZPR4b16, nxv8f16, int_aarch64_sme_fdot_lane_za32_vg1x2>;
+defm FDOT_VG4_M4ZZI_HtoS : sme2_multi_vec_array_vg4_index_32b<"fdot", 0b1001, ZZZZ_h_mul_r, ZPR4b16, nxv8f16, int_aarch64_sme_fdot_lane_za32_vg1x4>;
 defm FDOT_VG2_M2ZZ_HtoS  : sme2_dot_mla_add_sub_array_vg2_single<"fdot", 0b0010000, MatrixOp32, ZZ_h, ZPR4b16, nxv8f16, int_aarch64_sme_fdot_single_za32_vg1x2>;
 defm FDOT_VG4_M4ZZ_HtoS  : sme2_dot_mla_add_sub_array_vg4_single<"fdot", 0b0110000, MatrixOp32, ZZZZ_h, ZPR4b16, nxv8f16, int_aarch64_sme_fdot_single_za32_vg1x4>;
 defm FDOT_VG2_M2Z2Z_HtoS : sme2_dot_mla_add_sub_array_vg2_multi<"fdot",  0b010000, MatrixOp32, ZZ_h_mul_r, nxv8f16, int_aarch64_sme_fdot_za32_vg1x2>;
 defm FDOT_VG4_M4Z4Z_HtoS : sme2_dot_mla_add_sub_array_vg4_multi<"fdot",  0b010000, MatrixOp32, ZZZZ_h_mul_r, nxv8f16, int_aarch64_sme_fdot_za32_vg1x4>;
 
-defm BFDOT_VG2_M2ZZI_HtoS : sme2_multi_vec_array_vg2_index_32b<"bfdot", 0b1011, ZZ_h_mul_r, ZPR4b16, nxv8bf16, null_frag>;
-defm BFDOT_VG4_M4ZZI_HtoS : sme2_multi_vec_array_vg4_index_32b<"bfdot", 0b1011, ZZZZ_h_mul_r, ZPR4b16, nxv8bf16, null_frag>;
+defm BFDOT_VG2_M2ZZI_HtoS : sme2_multi_vec_array_vg2_index_32b<"bfdot", 0b1011, ZZ_h_mul_r, ZPR4b16, nxv8bf16, int_aarch64_sme_fdot_lane_za32_vg1x2>;
+defm BFDOT_VG4_M4ZZI_HtoS : sme2_multi_vec_array_vg4_index_32b<"bfdot", 0b1011, ZZZZ_h_mul_r, ZPR4b16, nxv8bf16, int_aarch64_sme_fdot_lane_za32_vg1x4>;
 defm BFDOT_VG2_M2ZZ_HtoS  : sme2_dot_mla_add_sub_array_vg2_single<"bfdot", 0b0010010, MatrixOp32, ZZ_h, ZPR4b16, nxv8bf16, int_aarch64_sme_fdot_single_za32_vg1x2>;
 defm BFDOT_VG4_M4ZZ_HtoS  : sme2_dot_mla_add_sub_array_vg4_single<"bfdot", 0b0110010, MatrixOp32, ZZZZ_h, ZPR4b16, nxv8bf16, int_aarch64_sme_fdot_single_za32_vg1x4>;
 defm BFDOT_VG2_M2Z2Z_HtoS : sme2_dot_mla_add_sub_array_vg2_multi<"bfdot",  0b010010, MatrixOp32, ZZ_h_mul_r, nxv8bf16, int_aarch64_sme_fdot_za32_vg1x2>;
 defm BFDOT_VG4_M4Z4Z_HtoS : sme2_dot_mla_add_sub_array_vg4_multi<"bfdot",  0b010010, MatrixOp32, ZZZZ_h_mul_r, nxv8bf16, int_aarch64_sme_fdot_za32_vg1x4>;
 
 defm BFVDOT_VG2_M2ZZI_HtoS : sme2_multi_vec_array_vg2_index_32b<"bfvdot", 0b0011, ZZ_h_mul_r, ZPR4b16, nxv8bf16, int_aarch64_sme_fvdot_lane_za32_vg1x2>;
 
 defm FVDOT_VG2_M2ZZI_HtoS : sme2_multi_vec_array_vg2_index_32b<"fvdot", 0b0001, ZZ_h_mul_r, ZPR4b16, nxv8f16, int_aarch64_sme_fvdot_lane_za32_vg1x2>;
 
-defm SDOT_VG2_M2ZZI_HToS : sme2_multi_vec_array_vg2_index_32b<"sdot", 0b1000, ZZ_h_mul_r, ZPR4b16, nxv8i16, null_frag>;
-defm SDOT_VG2_M2ZZI_BToS : sme2_multi_vec_array_vg2_index_32b<"sdot", 0b1100, ZZ_b_mul_r, ZPR4b8, nxv16i8, null_frag>;
-defm SDOT_VG4_M4ZZI_HToS : sme2_multi_vec_array_vg4_index_32b<"sdot", 0b1000, ZZZZ_h_mul_r, ZPR4b16, nxv8i16, null_frag>;
-defm SDOT_VG4_M4ZZI_BToS : sme2_multi_vec_array_vg4_index_32b<"sdot", 0b1100, ZZZZ_b_mul_r, ZPR4b8, nxv16i8, null_frag>;
+defm SDOT_VG2_M2ZZI_HToS : sme2_multi_vec_array_vg2_index_32b<"sdot", 0b1000, ZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_sdot_lane_za32_vg1x2>;
+defm SDOT_VG2_M2ZZI_BToS : sme2_multi_vec_array_vg2_index_32b<"sdot", 0b1100, ZZ_b_mul_r, ZPR4b8, nxv16i8, int_aarch64_sme_sdot_lane_za32_vg1x2>;
+defm SDOT_VG4_M4ZZI_HToS : sme2_multi_vec_array_vg4_index_32b<"sdot", 0b1000, ZZZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_sdot_lane_za32_vg1x4>;
+defm SDOT_VG4_M4ZZI_BToS : sme2_multi_vec_array_vg4_index_32b<"sdot", 0b1100, ZZZZ_b_mul_r, ZPR4b8, nxv16i8, int_aarch64_sme_sdot_lane_za32_vg1x4>;
 defm SDOT_VG2_M2ZZ_HtoS  : sme2_dot_mla_add_sub_array_vg2_single<"sdot", 0b1010101, MatrixOp32, ZZ_h, ZPR4b16, nxv8i16, int_aarch64_sme_sdot_single_za32_vg1x2>;
 defm SDOT_VG4_M4ZZ_HtoS  : sme2_dot_mla_add_sub_array_vg4_single<"sdot", 0b1110101, MatrixOp32, ZZZZ_h, ZPR4b16, nxv8i16, int_aarch64_sme_sdot_single_za32_vg1x4>;
 defm SDOT_VG2_M2Z2Z_HtoS : sme2_dot_mla_add_sub_array_vg2_multi<"sdot", 0b110101, MatrixOp32, ZZ_h_mul_r, nxv8i16, int_aarch64_sme_sdot_za32_vg1x2>;
 defm SDOT_VG4_M4Z4Z_HtoS : sme2_dot_mla_add_sub_array_vg4_multi<"sdot", 0b110101, MatrixOp32, ZZZZ_h_mul_r, nxv8i16, int_aarch64_sme_sdot_za32_vg1x4>;
 defm SDOT_VG2_M2ZZ_BtoS : sme2_dot_mla_add_sub_array_vg2_single<"sdot", 0b0010100, MatrixOp32, ZZ_b, ZPR4b8, nxv16i8, int_aarch64_sme_sdot_single_za32_vg1x2>;
 defm SDOT_VG4_M4ZZ_BtoS : sme2_dot_mla_add_sub_array_vg4_single<"sdot", 0b0110100, MatrixOp32, ZZZZ_b, ZPR4b8, nxv16i8, int_aarch64_sme_sdot_single_za32_vg1x4>;
 defm SDOT_VG2_M2Z2Z_BtoS : sme2_dot_mla_add_sub_array_vg2_multi<"sdot", 0b010100, MatrixOp32, ZZ_b_mul_r, nxv16i8, int_aarch64_sme_sdot_za32_vg1x2>;
 defm SDOT_VG4_M4Z4Z_BtoS : sme2_dot_mla_add_sub_array_vg4_multi<"sdot", 0b010100, MatrixOp32, ZZZZ_b_mul_r, nxv16i8, int_aarch64_sme_sdot_za32_vg1x4>;
 
-defm SUDOT_VG2_M2ZZI_BToS : sme2_multi_vec_array_vg2_index_32b<"sudot", 0b1111, ZZ_b_mul_r, ZPR4b8, nxv16i8, null_frag>;
-defm SUDOT_VG4_M4ZZI_BToS : sme2_multi_vec_array_vg4_index_32b<"sudot", 0b1111, ZZZZ_b_mul_r, ZPR4b8, nxv16i8, null_frag>;
+defm SUDOT_VG2_M2ZZI_BToS : sme2_multi_vec_array_vg2_index_32b<"sudot", 0b1111, ZZ_b_mul_r, ZPR4b8, nxv16i8, int_aarch64_sme_sudot_lane_za32_vg1x2>;
+defm SUDOT_VG4_M4ZZI_BToS : sme2_multi_vec_array_vg4_index_32b<"sudot", 0b1111, ZZZZ_b_mul_r, ZPR4b8, nxv16i8, int_aarch64_sme_sudot_lane_za32_vg1x4>;
 defm SUDOT_VG2_M2ZZ_BToS  : sme2_dot_mla_add_sub_array_vg2_single<"sudot", 0b0010111, MatrixOp32, ZZ_b, ZPR4b8, nxv16i8, int_aarch64_sme_sudot_single_za32_vg1x2>;
 defm SUDOT_VG4_M4ZZ_BToS  : sme2_dot_mla_add_sub_array_vg4_single<"sudot", 0b0110111, MatrixOp32, ZZZZ_b, ZPR4b8, nxv16i8, int_aarch64_sme_sudot_single_za32_vg1x4>;
 
 defm SVDOT_VG2_M2ZZI_HtoS : sme2_multi_vec_array_vg2_index_32b<"svdot", 0b0100, ZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_svdot_lane_za32_vg1x2>;
 defm SVDOT_VG4_M4ZZI_BtoS : sme2_multi_vec_array_vg4_index_32b<"svdot", 0b0100, ZZZZ_b_mul_r, ZPR4b8, nxv16i8, int_aarch64_sme_svdot_lane_za32_vg1x4>;
 
 defm SUVDOT_VG4_M4ZZI_BToS : sme2_multi_vec_array_vg4_index_32b<"suvdot", 0b0111, ZZZZ_b_mul_r, ZPR4b8, nxv16i8, int_aarch64_sme_suvdot_lane_za32_vg1x4>;
 
-defm UDOT_VG2_M2ZZI_HToS : sme2_multi_vec_array_vg2_index_32b<"udot", 0b1010, ZZ_h_mul_r, ZPR4b16, nxv8i16, null_frag>;
-defm UDOT_VG2_M2ZZI_BToS : sme2_multi_vec_array_vg2_index_32b<"udot", 0b1110, ZZ_b_mul_r, ZPR4b8, nxv16i8, null_frag>;
-defm UDOT_VG4_M4ZZI_BtoS : sme2_multi_vec_array_vg4_index_32b<"udot", 0b1110, ZZZZ_b_mul_r, ZPR4b8, nxv16i8, null_frag>;
-defm UDOT_VG4_M4ZZI_HToS : sme2_multi_vec_array_vg4_index_32b<"udot", 0b1010, ZZZZ_h_mul_r, ZPR4b16, nxv8i16, null_frag>;
+defm UDOT_VG2_M2ZZI_HToS : sme2_multi_vec_array_vg2_index_32b<"udot", 0b1010, ZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_udot_lane_za32_vg1x2>;
+defm UDOT_VG2_M2ZZI_BToS : sme2_multi_vec_array_vg2_index_32b<"udot", 0b1110, ZZ_b_mul_r, ZPR4b8, nxv16i8, int_aarch64_sme_udot_lane_za32_vg1x2>;
+defm UDOT_VG4_M4ZZI_BtoS : sme2_multi_vec_array_vg4_index_32b<"udot", 0b1110, ZZZZ_b_mul_r, ZPR4b8, nxv16i8, int_aarch64_sme_udot_lane_za32_vg1x4>;
+defm UDOT_VG4_M4ZZI_HToS : sme2_multi_vec_array_vg4_index_32b<"udot", 0b1010, ZZZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_udot_lane_za32_vg1x4>;
 defm UDOT_VG2_M2ZZ_HtoS  : sme2_dot_mla_add_sub_array_vg2_single<"udot", 0b1010111, MatrixOp32, ZZ_h, ZPR4b16, nxv8i16, int_aarch64_sme_udot_single_za32_vg1x2>;
 defm UDOT_VG4_M4ZZ_HtoS  : sme2_dot_mla_add_sub_array_vg4_single<"udot", 0b1110111, MatrixOp32, ZZZZ_h, ZPR4b16, nxv8i16, int_aarch64_sme_udot_single_za32_vg1x4>;
 defm UDOT_VG2_M2Z2Z_HtoS : sme2_dot_mla_add_sub_array_vg2_multi<"udot", 0b110111, MatrixOp32, ZZ_h_mul_r, nxv8i16, int_aarch64_sme_udot_za32_vg1x2>;
 defm UDOT_VG4_M4Z4Z_HtoS : sme2_dot_mla_add_sub_array_vg4_multi<"udot", 0b110111, MatrixOp32, ZZZZ_h_mul_r, nxv8i16, int_aarch64_sme_udot_za32_vg1x4>;
 defm UDOT_VG2_M2ZZ_BtoS : sme2_dot_mla_add_sub_array_vg2_single<"udot", 0b0010110, MatrixOp32, ZZ_b, ZPR4b8, nxv16i8, int_aarch64_sme_udot_single_za32_vg1x2>;
 defm UDOT_VG4_M4ZZ_BtoS : sme2_dot_mla_add_sub_array_vg4_single<"udot", 0b0110110, MatrixOp32, ZZZZ_b, ZPR4b8, nxv16i8, int_aarch64_sme_udot_single_za32_vg1x4>;
 defm UDOT_VG2_M2Z2Z_BtoS : sme2_dot_mla_add_sub_array_vg2_multi<"udot", 0b010110, MatrixOp32, ZZ_b_mul_r, nxv16i8, int_aarch64_sme_udot_za32_vg1x2>;
 defm UDOT_VG4_M4Z4Z_BtoS : sme2_dot_mla_add_sub_array_vg4_multi<"udot", 0b010110, MatrixOp32, ZZZZ_b_mul_r, nxv16i8, int_aarch64_sme_udot_za32_vg1x4>;
 
-defm USDOT_VG2_M2ZZI_BToS: sme2_multi_vec_array_vg2_index_32b<"usdot", 0b1101, ZZ_b_mul_r, ZPR4b8, nxv16i8, null_frag>;
-defm USDOT_VG4_M4ZZI_BToS: sme2_multi_vec_array_vg4_index_32b<"usdot", 0b1101, ZZZZ_b_mul_r, ZPR4b8, nxv16i8, null_frag>;
+defm USDOT_VG2_M2ZZI_BToS: sme2_multi_vec_array_vg2_index_32b<"usdot", 0b1101, ZZ_b_mul_r, ZPR4b8, nxv16i8, int_aarch64_sme_usdot_lane_za32_vg1x2>;
+defm USDOT_VG4_M4ZZI_BToS: sme2_multi_vec_array_vg4_index_32b<"usdot", 0b1101, ZZZZ_b_mul_r, ZPR4b8, nxv16i8, int_aarch64_sme_usdot_lane_za32_vg1x4>;
 defm USDOT_VG2_M2ZZ_BToS : sme2_dot_mla_add_sub_array_vg2_single<"usdot",  0b0010101, MatrixOp32, ZZ_b, ZPR4b8, nxv16i8, int_aarch64_sme_usdot_single_za32_vg1x2>;
 defm USDOT_VG4_M4ZZ_BToS  : sme2_dot_mla_add_sub_array_vg4_single<"usdot", 0b0110101, MatrixOp32, ZZZZ_b, ZPR4b8, nxv16i8, int_aarch64_sme_usdot_single_za32_vg1x4>;
 defm USDOT_VG2_M2Z2Z_BToS : sme2_dot_mla_add_sub_array_vg2_multi<"usdot", 0b010101, MatrixOp32, ZZ_b_mul_r, nxv16i8, int_aarch64_sme_usdot_za32_vg1x2>;
 defm USDOT_VG4_M4Z4Z_BToS : sme2_dot_mla_add_sub_array_vg4_multi<"usdot", 0b010101, MatrixOp32, ZZZZ_b_mul_r, nxv16i8, int_aarch64_sme_usdot_za32_vg1x4>;
 
 defm USVDOT_VG4_M4ZZI_BToS : sme2_multi_vec_array_vg4_index_32b<"usvdot", 0b0101, ZZZZ_b_mul_r, ZPR4b8, nxv16i8, int_aarch64_sme_usvdot_lane_za32_vg1x4>;
 
 defm UVDOT_VG2_M2ZZI_HtoS : sme2_multi_vec_array_vg2_index_32b<"uvdot", 0b0110, ZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_uvdot_lane_za32_vg1x2>;

 defm SUB_VG4_M4Z4Z_D : sme2_dot_mla_add_sub_array_vg4_multi<"sub", 0b111011, MatrixOp64, ZZZZ_d_mul_r, nxv2i64, int_aarch64_sme_sub_write_za_vg1x4>;
 
 defm ADD_VG2_M2Z_D : sme2_multivec_accum_add_sub_vg2<"add", 0b1010, MatrixOp64, ZZ_d_mul_r, nxv2i64, int_aarch64_sme_add_za64_vg1x2>;
 defm ADD_VG4_M4Z_D : sme2_multivec_accum_add_sub_vg4<"add", 0b1010, MatrixOp64, ZZZZ_d_mul_r, nxv2i64, int_aarch64_sme_add_za64_vg1x4>;
 
 defm SUB_VG2_M2Z_D : sme2_multivec_accum_add_sub_vg2<"sub", 0b1011, MatrixOp64, ZZ_d_mul_r, nxv2i64, int_aarch64_sme_sub_za64_vg1x2>;
 defm SUB_VG4_M4Z_D : sme2_multivec_accum_add_sub_vg4<"sub", 0b1011, MatrixOp64, ZZZZ_d_mul_r, nxv2i64, int_aarch64_sme_sub_za64_vg1x4>;
 
-defm SDOT_VG2_M2ZZI_HtoD : sme2_multi_vec_array_vg2_index_64b<"sdot", 0b01, ZZ_h_mul_r, ZPR4b16, nxv8i16, null_frag>;
-defm SDOT_VG4_M4ZZI_HtoD : sme2_multi_vec_array_vg4_index_64b<"sdot", 0b001, ZZZZ_h_mul_r, ZPR4b16, nxv8i16, null_frag>;
+defm SDOT_VG2_M2ZZI_HtoD : sme2_multi_vec_array_vg2_index_64b<"sdot", 0b01, ZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_sdot_lane_za64_vg1x2>;
+defm SDOT_VG4_M4ZZI_HtoD : sme2_multi_vec_array_vg4_index_64b<"sdot", 0b001, ZZZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_sdot_lane_za64_vg1x4>;
 defm SDOT_VG2_M2ZZ_HtoD : sme2_dot_mla_add_sub_array_vg2_single<"sdot", 0b1010100, MatrixOp64, ZZ_h, ZPR4b16, nxv8i16, int_aarch64_sme_sdot_single_za64_vg1x2>;
 defm SDOT_VG4_M4ZZ_HtoD : sme2_dot_mla_add_sub_array_vg4_single<"sdot", 0b1110100, MatrixOp64, ZZZZ_h, ZPR4b16, nxv8i16, int_aarch64_sme_sdot_single_za64_vg1x4>;
 defm SDOT_VG2_M2Z2Z_HtoD : sme2_dot_mla_add_sub_array_vg2_multi<"sdot", 0b110100, MatrixOp64, ZZ_h_mul_r, nxv8i16, int_aarch64_sme_sdot_za64_vg1x2>;
 defm SDOT_VG4_M4Z4Z_HtoD : sme2_dot_mla_add_sub_array_vg4_multi<"sdot", 0b110100, MatrixOp64, ZZZZ_h_mul_r, nxv8i16, int_aarch64_sme_sdot_za64_vg1x4>;
 
 defm SVDOT_VG4_M4ZZI_HtoD : sme2_multi_vec_array_vg4_index_64b<"svdot", 0b101, ZZZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_svdot_lane_za64_vg1x4>;
 
-defm UDOT_VG2_M2ZZI_HtoD : sme2_multi_vec_array_vg2_index_64b<"udot", 0b11, ZZ_h_mul_r, ZPR4b16, nxv8i16, null_frag>;
-defm UDOT_VG4_M4ZZI_HtoD : sme2_multi_vec_array_vg4_index_64b<"udot", 0b011, ZZZZ_h_mul_r, ZPR4b16, nxv8i16, null_frag>;
+defm UDOT_VG2_M2ZZI_HtoD : sme2_multi_vec_array_vg2_index_64b<"udot", 0b11, ZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_udot_lane_za64_vg1x2>;
+defm UDOT_VG4_M4ZZI_HtoD : sme2_multi_vec_array_vg4_index_64b<"udot", 0b011, ZZZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_udot_lane_za64_vg1x4>;
 defm UDOT_VG2_M2ZZ_HtoD : sme2_dot_mla_add_sub_array_vg2_single<"udot", 0b1010110, MatrixOp64, ZZ_h, ZPR4b16, nxv8i16, int_aarch64_sme_udot_single_za64_vg1x2>;
 defm UDOT_VG4_M4ZZ_HtoD : sme2_dot_mla_add_sub_array_vg4_single<"udot", 0b1110110, MatrixOp64, ZZZZ_h, ZPR4b16, nxv8i16, int_aarch64_sme_udot_single_za64_vg1x4>;
 defm UDOT_VG2_M2Z2Z_HtoD : sme2_dot_mla_add_sub_array_vg2_multi<"udot", 0b110110, MatrixOp64, ZZ_h_mul_r, nxv8i16, int_aarch64_sme_udot_za64_vg1x2>;
 defm UDOT_VG4_M4Z4Z_HtoD : sme2_dot_mla_add_sub_array_vg4_multi<"udot", 0b110110, MatrixOp64, ZZZZ_h_mul_r, nxv8i16, int_aarch64_sme_udot_za64_vg1x4>;
 
 defm UVDOT_VG4_M4ZZI_HtoD : sme2_multi_vec_array_vg4_index_64b<"uvdot", 0b111, ZZZZ_h_mul_r, ZPR4b16, nxv8i16, int_aarch64_sme_uvdot_lane_za64_vg1x4>;
 
 def  SMLALL_MZZI_HtoD      : sme2_mla_ll_array_index_64b<"smlall", 0b00>;

llvm/test/CodeGen/AArch64/sme2-intrinsics-fp-dots.ll

 ; CHECK-NEXT:    ret
   call void @llvm.aarch64.sme.fdot.single.za32.vg1x4.nxv8bf16(i32 %slice, <vscale x 8 x bfloat> %zn0, <vscale x 8 x bfloat> %zn1, <vscale x 8 x bfloat> %zn2, <vscale x 8 x bfloat> %zn3, <vscale x 8 x bfloat> %zn4)
   %slice2 = add i32 %slice, 7
   call void @llvm.aarch64.sme.fdot.single.za32.vg1x4.nxv8bf16(i32 %slice2, <vscale x 8 x bfloat> %zn0, <vscale x 8 x bfloat> %zn1, <vscale x 8 x bfloat> %zn2, <vscale x 8 x bfloat> %zn3, <vscale x 8 x bfloat> %zn4)
   ret void
 }
 
 
+; == Multi, indexed (16-bit float) ==
+
+define void @fdot_lane_za32_f16_vg1x2(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 8 x half> %zn0, <vscale x 8 x half> %zn1, <vscale x 8 x half> %zn2) #0 {
+; CHECK-LABEL: fdot_lane_za32_f16_vg1x2:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z5.d, z2.d
+; CHECK-NEXT:    mov z4.d, z1.d
+; CHECK-NEXT:    fdot za.s[w8, 0, vgx2], { z4.h, z5.h }, z3.h[3]
+; CHECK-NEXT:    fdot za.s[w8, 7, vgx2], { z4.h, z5.h }, z3.h[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.fdot.lane.za32.vg1x2.nxv8f16(i32 %slice, <vscale x 8 x half> %zn0, <vscale x 8 x half> %zn1, <vscale x 8 x half> %zn2, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.fdot.lane.za32.vg1x2.nxv8f16(i32 %slice2, <vscale x 8 x half> %zn0, <vscale x 8 x half> %zn1, <vscale x 8 x half> %zn2, i32 3)
+  ret void
+}
+
+define void @fdot_lane_za32_f16_vg1x4(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 8 x half> %zn0, <vscale x 8 x half> %zn1, <vscale x 8 x half> %zn2, <vscale x 8 x half> %zn3, <vscale x 8 x half> %zn4) #0 {
+; CHECK-LABEL: fdot_lane_za32_f16_vg1x4:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov z27.d, z4.d
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z26.d, z3.d
+; CHECK-NEXT:    mov z25.d, z2.d
+; CHECK-NEXT:    mov z24.d, z1.d
+; CHECK-NEXT:    fdot za.s[w8, 0, vgx4], { z24.h - z27.h }, z5.h[3]
+; CHECK-NEXT:    fdot za.s[w8, 7, vgx4], { z24.h - z27.h }, z5.h[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.fdot.lane.za32.vg1x4.nxv8f16(i32 %slice, <vscale x 8 x half> %zn0, <vscale x 8 x half> %zn1, <vscale x 8 x half> %zn2, <vscale x 8 x half> %zn3,
+                                                           <vscale x 8 x half> %zn4, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.fdot.lane.za32.vg1x4.nxv8f16(i32 %slice2, <vscale x 8 x half> %zn0, <vscale x 8 x half> %zn1, <vscale x 8 x half> %zn2, <vscale x 8 x half> %zn3,
+                                                           <vscale x 8 x half> %zn4, i32 3)
+  ret void
+}
+
+
+; == Multi, indexed (16-bit bfloat) ==
+
+define void @bfdot_lane_za32_bf16_vg1x2(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 8 x bfloat> %zn0, <vscale x 8 x bfloat> %zn1, <vscale x 8 x bfloat> %zn2) #0 {
+; CHECK-LABEL: bfdot_lane_za32_bf16_vg1x2:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z5.d, z2.d
+; CHECK-NEXT:    mov z4.d, z1.d
+; CHECK-NEXT:    bfdot za.s[w8, 0, vgx2], { z4.h, z5.h }, z3.h[3]
+; CHECK-NEXT:    bfdot za.s[w8, 7, vgx2], { z4.h, z5.h }, z3.h[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.fdot.lane.za32.vg1x2.nxv8bf16(i32 %slice, <vscale x 8 x bfloat> %zn0, <vscale x 8 x bfloat> %zn1, <vscale x 8 x bfloat> %zn2, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.fdot.lane.za32.vg1x2.nxv8bf16(i32 %slice2, <vscale x 8 x bfloat> %zn0, <vscale x 8 x bfloat> %zn1, <vscale x 8 x bfloat> %zn2, i32 3)
+  ret void
+}
+
+define void @bfdot_lane_za32_bf16_vg1x4(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 8 x bfloat> %zn0, <vscale x 8 x bfloat> %zn1, <vscale x 8 x bfloat> %zn2, <vscale x 8 x bfloat> %zn3, <vscale x 8 x bfloat> %zn4) #0 {
+; CHECK-LABEL: bfdot_lane_za32_bf16_vg1x4:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov z27.d, z4.d
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z26.d, z3.d
+; CHECK-NEXT:    mov z25.d, z2.d
+; CHECK-NEXT:    mov z24.d, z1.d
+; CHECK-NEXT:    bfdot za.s[w8, 0, vgx4], { z24.h - z27.h }, z5.h[3]
+; CHECK-NEXT:    bfdot za.s[w8, 7, vgx4], { z24.h - z27.h }, z5.h[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.fdot.lane.za32.vg1x4.nxv8bf16(i32 %slice, <vscale x 8 x bfloat> %zn0, <vscale x 8 x bfloat> %zn1, <vscale x 8 x bfloat> %zn2, <vscale x 8 x bfloat> %zn3,
+                                                             <vscale x 8 x bfloat> %zn4, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.fdot.lane.za32.vg1x4.nxv8bf16(i32 %slice2, <vscale x 8 x bfloat> %zn0, <vscale x 8 x bfloat> %zn1, <vscale x 8 x bfloat> %zn2, <vscale x 8 x bfloat> %zn3,
+                                                             <vscale x 8 x bfloat> %zn4, i32 3)
+  ret void
+}
+
+
 attributes #0 = { nounwind "target-features"="+sme2" }
 
 
 ; == Multi, multi (16-bit float)
 
 declare void @llvm.aarch64.sme.fdot.za32.vg1x2.nxv8f16(i32, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>)
 declare void @llvm.aarch64.sme.fdot.za32.vg1x4.nxv8f16(i32, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>,
                                                        <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>)

 declare void @llvm.aarch64.sme.fdot.single.za32.vg1x2.nxv8f16(i32, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>)
 declare void @llvm.aarch64.sme.fdot.single.za32.vg1x4.nxv8f16(i32, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>)
 
 ; == Multi, single (16-bit bfloat)
 
 declare void @llvm.aarch64.sme.fdot.single.za32.vg1x2.nxv8bf16(i32, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>)
 declare void @llvm.aarch64.sme.fdot.single.za32.vg1x4.nxv8bf16(i32, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>)
 
+; == Multi, indexed (16-bit float)
+
+declare void @llvm.aarch64.sme.fdot.lane.za32.vg1x2.nxv8f16(i32, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>, i32)
+declare void @llvm.aarch64.sme.fdot.lane.za32.vg1x4.nxv8f16(i32, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>, <vscale x 8 x half>, i32)
+
+; == Multi, indexed (16-bit bfloat)
+
+declare void @llvm.aarch64.sme.fdot.lane.za32.vg1x2.nxv8bf16(i32, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>, i32)
+declare void @llvm.aarch64.sme.fdot.lane.za32.vg1x4.nxv8bf16(i32, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>, <vscale x 8 x bfloat>, i32)

llvm/test/CodeGen/AArch64/sme2-intrinsics-int-dots.ll

 ; CHECK-NEXT:    sudot za.s[w8, 7, vgx4], { z1.b - z4.b }, z5.b
 ; CHECK-NEXT:    ret
   call void @llvm.aarch64.sme.sudot.single.za32.vg1x4.nxv16i8(i32 %slice, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3, <vscale x 16 x i8> %zn4)
   %slice2 = add i32 %slice, 7
   call void @llvm.aarch64.sme.sudot.single.za32.vg1x4.nxv16i8(i32 %slice2, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3, <vscale x 16 x i8> %zn4)
   ret void
 }
 
+; == Multi, indexed (unsigned) ==
+
+define void @udot_lane_za32_u16_vg1x2(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2) #0 {
+; CHECK-LABEL: udot_lane_za32_u16_vg1x2:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z5.d, z2.d
+; CHECK-NEXT:    mov z4.d, z1.d
+; CHECK-NEXT:    udot za.s[w8, 0, vgx2], { z4.h, z5.h }, z3.h[3]
+; CHECK-NEXT:    udot za.s[w8, 7, vgx2], { z4.h, z5.h }, z3.h[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.udot.lane.za32.vg1x2.nxv8i16(i32 %slice, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.udot.lane.za32.vg1x2.nxv8i16(i32 %slice2, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, i32 3)
+  ret void
+}
+
+define void @udot_lane_za32_u16_vg1x4(i32 %slice, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3, <vscale x 8 x i16> %zn4) #0 {
+; CHECK-LABEL: udot_lane_za32_u16_vg1x4:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    // kill: def $z3 killed $z3 killed $z0_z1_z2_z3 def $z0_z1_z2_z3
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    // kill: def $z2 killed $z2 killed $z0_z1_z2_z3 def $z0_z1_z2_z3
+; CHECK-NEXT:    // kill: def $z1 killed $z1 killed $z0_z1_z2_z3 def $z0_z1_z2_z3
+; CHECK-NEXT:    // kill: def $z0 killed $z0 killed $z0_z1_z2_z3 def $z0_z1_z2_z3
+; CHECK-NEXT:    udot za.s[w8, 0, vgx4], { z0.h - z3.h }, z4.h[3]
+; CHECK-NEXT:    udot za.s[w8, 7, vgx4], { z0.h - z3.h }, z4.h[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.udot.lane.za32.vg1x4.nxv8i16(i32 %slice, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3,
+                                                           <vscale x 8 x i16> %zn4, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.udot.lane.za32.vg1x4.nxv8i16(i32 %slice2, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3,
+                                                           <vscale x 8 x i16> %zn4, i32 3)
+  ret void
+}
+
+define void @udot_lane_za32_u8_vg1x2(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2) #0 {
+; CHECK-LABEL: udot_lane_za32_u8_vg1x2:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z5.d, z2.d
+; CHECK-NEXT:    mov z4.d, z1.d
+; CHECK-NEXT:    udot za.s[w8, 0, vgx2], { z4.b, z5.b }, z3.b[3]
+; CHECK-NEXT:    udot za.s[w8, 7, vgx2], { z4.b, z5.b }, z3.b[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.udot.lane.za32.vg1x2.nxv16i8(i32 %slice, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.udot.lane.za32.vg1x2.nxv16i8(i32 %slice2, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, i32 3)
+  ret void
+}
+
+define void @udot_lane_za32_u8_vg1x4(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3, <vscale x 16 x i8> %zn4) #0 {
+; CHECK-LABEL: udot_lane_za32_u8_vg1x4:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov z27.d, z4.d
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z26.d, z3.d
+; CHECK-NEXT:    mov z25.d, z2.d
+; CHECK-NEXT:    mov z24.d, z1.d
+; CHECK-NEXT:    udot za.s[w8, 0, vgx4], { z24.b - z27.b }, z5.b[3]
+; CHECK-NEXT:    udot za.s[w8, 7, vgx4], { z24.b - z27.b }, z5.b[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.udot.lane.za32.vg1x4.nxv16i8(i32 %slice, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3,
+                                                           <vscale x 16 x i8> %zn4, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.udot.lane.za32.vg1x4.nxv16i8(i32 %slice2, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3,
+                                                           <vscale x 16 x i8> %zn4, i32 3)
+  ret void
+}
+
+define void @udot_lane_za64_u16_vg1x2(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2) #1 {
+; CHECK-LABEL: udot_lane_za64_u16_vg1x2:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z5.d, z2.d
+; CHECK-NEXT:    mov z4.d, z1.d
+; CHECK-NEXT:    udot za.d[w8, 0, vgx2], { z4.h, z5.h }, z3.h[1]
+; CHECK-NEXT:    udot za.d[w8, 7, vgx2], { z4.h, z5.h }, z3.h[1]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.udot.lane.za64.vg1x2.nxv8i16(i32 %slice, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, i32 1)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.udot.lane.za64.vg1x2.nxv8i16(i32 %slice2, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, i32 1)
+  ret void
+}
+
+define void @udot_lane_za64_u16_vg1x4(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3, <vscale x 8 x i16> %zn4) #1 {
+; CHECK-LABEL: udot_lane_za64_u16_vg1x4:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov z27.d, z4.d
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z26.d, z3.d
+; CHECK-NEXT:    mov z25.d, z2.d
+; CHECK-NEXT:    mov z24.d, z1.d
+; CHECK-NEXT:    udot za.d[w8, 0, vgx4], { z24.h - z27.h }, z5.h[1]
+; CHECK-NEXT:    udot za.d[w8, 7, vgx4], { z24.h - z27.h }, z5.h[1]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.udot.lane.za64.vg1x4.nxv8i16(i32 %slice, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3,
+                                                           <vscale x 8 x i16> %zn4, i32 1)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.udot.lane.za64.vg1x4.nxv8i16(i32 %slice2, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3,
+                                                           <vscale x 8 x i16> %zn4, i32 1)
+  ret void
+}
+
+define void @usdot_lane_za32_u8_vg1x2(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2) #0 {
+; CHECK-LABEL: usdot_lane_za32_u8_vg1x2:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z5.d, z2.d
+; CHECK-NEXT:    mov z4.d, z1.d
+; CHECK-NEXT:    usdot za.s[w8, 0, vgx2], { z4.b, z5.b }, z3.b[3]
+; CHECK-NEXT:    usdot za.s[w8, 7, vgx2], { z4.b, z5.b }, z3.b[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.usdot.lane.za32.vg1x2.nxv16i8(i32 %slice, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.usdot.lane.za32.vg1x2.nxv16i8(i32 %slice2, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, i32 3)
+  ret void
+}
+
+define void @usdot_lane_za32_u8_vg1x4(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3, <vscale x 16 x i8> %zn4) #0 {
+; CHECK-LABEL: usdot_lane_za32_u8_vg1x4:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov z27.d, z4.d
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z26.d, z3.d
+; CHECK-NEXT:    mov z25.d, z2.d
+; CHECK-NEXT:    mov z24.d, z1.d
+; CHECK-NEXT:    usdot za.s[w8, 0, vgx4], { z24.b - z27.b }, z5.b[3]
+; CHECK-NEXT:    usdot za.s[w8, 7, vgx4], { z24.b - z27.b }, z5.b[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.usdot.lane.za32.vg1x4.nxv16i8(i32 %slice, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3,
+                                                            <vscale x 16 x i8> %zn4, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.usdot.lane.za32.vg1x4.nxv16i8(i32 %slice2, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3,
+                                                            <vscale x 16 x i8> %zn4, i32 3)
+  ret void
+}
+
+
+; == Multi, indexed (signed) ==
+
+define void @sdot_lane_za32_u16_vg1x2(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2) #0 {
+; CHECK-LABEL: sdot_lane_za32_u16_vg1x2:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z5.d, z2.d
+; CHECK-NEXT:    mov z4.d, z1.d
+; CHECK-NEXT:    sdot za.s[w8, 0, vgx2], { z4.h, z5.h }, z3.h[3]
+; CHECK-NEXT:    sdot za.s[w8, 7, vgx2], { z4.h, z5.h }, z3.h[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.sdot.lane.za32.vg1x2.nxv8i16(i32 %slice, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.sdot.lane.za32.vg1x2.nxv8i16(i32 %slice2, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, i32 3)
+  ret void
+}
+
+define void @sdot_lane_za32_u16_vg1x4(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3, <vscale x 8 x i16> %zn4) #0 {
+; CHECK-LABEL: sdot_lane_za32_u16_vg1x4:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov z27.d, z4.d
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z26.d, z3.d
+; CHECK-NEXT:    mov z25.d, z2.d
+; CHECK-NEXT:    mov z24.d, z1.d
+; CHECK-NEXT:    sdot za.s[w8, 0, vgx4], { z24.h - z27.h }, z5.h[3]
+; CHECK-NEXT:    sdot za.s[w8, 7, vgx4], { z24.h - z27.h }, z5.h[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.sdot.lane.za32.vg1x4.nxv8i16(i32 %slice, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3,
+                                                           <vscale x 8 x i16> %zn4, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.sdot.lane.za32.vg1x4.nxv8i16(i32 %slice2, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3,
+                                                           <vscale x 8 x i16> %zn4, i32 3)
+  ret void
+}
+
+define void @sdot_lane_za32_u8_vg1x2(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2) #0 {
+; CHECK-LABEL: sdot_lane_za32_u8_vg1x2:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z5.d, z2.d
+; CHECK-NEXT:    mov z4.d, z1.d
+; CHECK-NEXT:    sdot za.s[w8, 0, vgx2], { z4.b, z5.b }, z3.b[3]
+; CHECK-NEXT:    sdot za.s[w8, 7, vgx2], { z4.b, z5.b }, z3.b[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.sdot.lane.za32.vg1x2.nxv16i8(i32 %slice, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.sdot.lane.za32.vg1x2.nxv16i8(i32 %slice2, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, i32 3)
+  ret void
+}
+
+define void @sdot_lane_za32_u8_vg1x4(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3, <vscale x 16 x i8> %zn4) #0 {
+; CHECK-LABEL: sdot_lane_za32_u8_vg1x4:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov z27.d, z4.d
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z26.d, z3.d
+; CHECK-NEXT:    mov z25.d, z2.d
+; CHECK-NEXT:    mov z24.d, z1.d
+; CHECK-NEXT:    sdot za.s[w8, 0, vgx4], { z24.b - z27.b }, z5.b[3]
+; CHECK-NEXT:    sdot za.s[w8, 7, vgx4], { z24.b - z27.b }, z5.b[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.sdot.lane.za32.vg1x4.nxv16i8(i32 %slice, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3,
+                                                           <vscale x 16 x i8> %zn4, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.sdot.lane.za32.vg1x4.nxv16i8(i32 %slice2, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3,
+                                                           <vscale x 16 x i8> %zn4, i32 3)
+  ret void
+}
+
+define void @sdot_lane_za64_u16_vg1x2(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2) #1 {
+; CHECK-LABEL: sdot_lane_za64_u16_vg1x2:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z5.d, z2.d
+; CHECK-NEXT:    mov z4.d, z1.d
+; CHECK-NEXT:    sdot za.d[w8, 0, vgx2], { z4.h, z5.h }, z3.h[1]
+; CHECK-NEXT:    sdot za.d[w8, 7, vgx2], { z4.h, z5.h }, z3.h[1]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.sdot.lane.za64.vg1x2.nxv8i16(i32 %slice, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, i32 1)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.sdot.lane.za64.vg1x2.nxv8i16(i32 %slice2, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, i32 1)
+  ret void
+}
+
+define void @sdot_lane_za64_u16_vg1x4(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3, <vscale x 8 x i16> %zn4) #1 {
+; CHECK-LABEL: sdot_lane_za64_u16_vg1x4:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov z27.d, z4.d
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z26.d, z3.d
+; CHECK-NEXT:    mov z25.d, z2.d
+; CHECK-NEXT:    mov z24.d, z1.d
+; CHECK-NEXT:    sdot za.d[w8, 0, vgx4], { z24.h - z27.h }, z5.h[1]
+; CHECK-NEXT:    sdot za.d[w8, 7, vgx4], { z24.h - z27.h }, z5.h[1]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.sdot.lane.za64.vg1x4.nxv8i16(i32 %slice, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3,
+                                                           <vscale x 8 x i16> %zn4, i32 1)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.sdot.lane.za64.vg1x4.nxv8i16(i32 %slice2, <vscale x 8 x i16> %zn0, <vscale x 8 x i16> %zn1, <vscale x 8 x i16> %zn2, <vscale x 8 x i16> %zn3,
+                                                           <vscale x 8 x i16> %zn4, i32 1)
+  ret void
+}
+
+
+
+define void @sudot_lane_za32_u8_vg1x2(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2) #0 {
+; CHECK-LABEL: sudot_lane_za32_u8_vg1x2:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z5.d, z2.d
+; CHECK-NEXT:    mov z4.d, z1.d
+; CHECK-NEXT:    sudot za.s[w8, 0, vgx2], { z4.b, z5.b }, z3.b[3]
+; CHECK-NEXT:    sudot za.s[w8, 7, vgx2], { z4.b, z5.b }, z3.b[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.sudot.lane.za32.vg1x2.nxv16i8(i32 %slice, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.sudot.lane.za32.vg1x2.nxv16i8(i32 %slice2, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, i32 3)
+  ret void
+}
+
+define void @sudot_lane_za32_u8_vg1x4(i32 %slice, <vscale x 16 x i8> %unused, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3, <vscale x 16 x i8> %zn4) #0 {
+; CHECK-LABEL: sudot_lane_za32_u8_vg1x4:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov z27.d, z4.d
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    mov z26.d, z3.d
+; CHECK-NEXT:    mov z25.d, z2.d
+; CHECK-NEXT:    mov z24.d, z1.d
+; CHECK-NEXT:    sudot za.s[w8, 0, vgx4], { z24.b - z27.b }, z5.b[3]
+; CHECK-NEXT:    sudot za.s[w8, 7, vgx4], { z24.b - z27.b }, z5.b[3]
+; CHECK-NEXT:    ret
+  call void @llvm.aarch64.sme.sudot.lane.za32.vg1x4.nxv16i8(i32 %slice, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3,
+                                                            <vscale x 16 x i8> %zn4, i32 3)
+  %slice2 = add i32 %slice, 7
+  call void @llvm.aarch64.sme.sudot.lane.za32.vg1x4.nxv16i8(i32 %slice2, <vscale x 16 x i8> %zn0, <vscale x 16 x i8> %zn1, <vscale x 16 x i8> %zn2, <vscale x 16 x i8> %zn3,
+                                                            <vscale x 16 x i8> %zn4, i32 3)
+  ret void
+}
+
 
 attributes #0 = { nounwind "target-features"="+sme2" }
 attributes #1 = { nounwind "target-features"="+sme2,+sme-i16i64" }
 
 
 ; == Multi, multi (unsigned)
 
 declare void @llvm.aarch64.sme.udot.za32.vg1x2.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>)

 declare void @llvm.aarch64.sme.sdot.single.za32.vg1x2.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>)
 declare void @llvm.aarch64.sme.sdot.single.za32.vg1x4.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>)
 declare void @llvm.aarch64.sme.sdot.single.za32.vg1x2.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>)
 declare void @llvm.aarch64.sme.sdot.single.za32.vg1x4.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>)
 declare void @llvm.aarch64.sme.sdot.single.za64.vg1x2.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>)
 declare void @llvm.aarch64.sme.sdot.single.za64.vg1x4.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>)
 declare void @llvm.aarch64.sme.sudot.single.za32.vg1x2.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>)
 declare void @llvm.aarch64.sme.sudot.single.za32.vg1x4.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>)
+
+; == Multi, indexed (unsigned)
+
+declare void @llvm.aarch64.sme.udot.lane.za32.vg1x2.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, i32)
+declare void @llvm.aarch64.sme.udot.lane.za32.vg1x4.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, i32)
+declare void @llvm.aarch64.sme.udot.lane.za32.vg1x2.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, i32)
+declare void @llvm.aarch64.sme.udot.lane.za32.vg1x4.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, i32)
+declare void @llvm.aarch64.sme.udot.lane.za64.vg1x2.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, i32)
+declare void @llvm.aarch64.sme.udot.lane.za64.vg1x4.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, i32)
+declare void @llvm.aarch64.sme.usdot.lane.za32.vg1x2.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, i32)
+declare void @llvm.aarch64.sme.usdot.lane.za32.vg1x4.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, i32)
+
+; == Multi, indexed (signed)
+
+declare void @llvm.aarch64.sme.sdot.lane.za32.vg1x2.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, i32)
+declare void @llvm.aarch64.sme.sdot.lane.za32.vg1x4.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, i32)
+declare void @llvm.aarch64.sme.sdot.lane.za32.vg1x2.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, i32)
+declare void @llvm.aarch64.sme.sdot.lane.za32.vg1x4.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, i32)
+declare void @llvm.aarch64.sme.sdot.lane.za64.vg1x2.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, i32)
+declare void @llvm.aarch64.sme.sdot.lane.za64.vg1x4.nxv8i16(i32, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, <vscale x 8 x i16>, i32)
+declare void @llvm.aarch64.sme.sudot.lane.za32.vg1x2.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, i32)
+declare void @llvm.aarch64.sme.sudot.lane.za32.vg1x4.nxv16i8(i32, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, i32)