Optimize matmul int8 sdot

mindspore/lite/nnacl/opt_op_handler.c

@@ -16,6 +16,7 @@
 
 #include <stdlib.h>
 #include <stdbool.h>
+#include "nnacl/op_base.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -28,6 +29,10 @@ extern void IndirectGemmInt8_24x4_dp(int8_t *dst, const int8_t *src, const int8_
 
 extern void MatMulOptR4Int8Neon64(const int8_t *a, const int8_t *b, int *dst, int row4, int col4, int deep16,
                                   const int *input_sum, const int *bias);
+extern void MatmulInt8DpNeon64(const int8_t *a, const int8_t *b, int8_t *dst, int row8, int col8, int deep4,
+                               const int *a_sums, const int *bias, int act_min, int act_max, int out_zp, int multiplier,
+                               int left_shift, int right_shift, int row, int col, int stride);
+
 #ifdef __cplusplus
 }
 #endif
@@ -51,6 +56,7 @@ void MatMulRInt8_optimize_handler(const int8_t *a, const int8_t *b, int8_t *dst,
                                   size_t stride, const int32_t *input_sum, const int32_t *bias, int32_t *left_shift,
                                   int32_t *right_shift, int32_t *multiplier, int32_t output_zp, int32_t mini,
                                   int32_t maxi, bool per_channel) {
-  return;
+  return MatmulInt8DpNeon64(a, b, dst, UP_ROUND(row, 8), UP_ROUND(col, 8), deep_4, input_sum, bias, mini, maxi,
+                            output_zp, multiplier[0], left_shift[0], right_shift[0], row, col, col);
 }
 #endif