!13751 [MSLITE][Develop] fix bug of arm cpu op gather while running in multi-threaded mode

From: @yangruoqi713
Reviewed-by: @zhanghaibo5,@zhang_xue_tong
Signed-off-by: @zhang_xue_tong

mindspore/lite/src/runtime/kernel/arm/fp16/gather_fp16.cc

@@ -119,8 +119,8 @@ int GatherFp16CPUKernel::DoGather(int task_id) {
   }
   int8_t *int8_out = reinterpret_cast<int8_t *>(out_tensor->data_c());
   int data_size = lite::DataTypeSize(kNumberTypeFloat16);
-  int8_in += thread_stride * limit * data_size;
-  int8_out += thread_stride * indices_element_size * data_size;
+  int8_in += thread_stride * limit * inner_size * data_size;
+  int8_out += thread_stride * indices_element_size * inner_size * data_size;
   int error_code = Gather(int8_in, count, inner_size, limit, indices_data_, indices_element_size, int8_out, data_size);
   return error_code;
 }

mindspore/lite/src/runtime/kernel/arm/fp32/gather_fp32.cc

@@ -65,8 +65,8 @@ int GatherCPUKernel::DoGather(int task_id) {
   int8_t *int8_out = reinterpret_cast<int8_t *>(out_tensor->data_c());
 
   int data_size = lite::DataTypeSize(input_tensor->data_type());
-  int8_in += thread_stride * limit * data_size;
-  int8_out += thread_stride * indices_element_size * data_size;
+  int8_in += thread_stride * limit * inner_size * data_size;
+  int8_out += thread_stride * indices_element_size * inner_size * data_size;
 
   int error_code = Gather(int8_in, count, inner_size, limit, indices_data_, indices_element_size, int8_out, data_size);
 

mindspore/lite/src/runtime/kernel/arm/int8/gather_int8.cc

@@ -82,8 +82,8 @@ int GatherInt8CPUKernel::DoGather(int task_id) {
   int count = MSMIN(stride, outer_size - stride * task_id);
   auto thread_stride = stride * task_id;
 
-  input_ptr += thread_stride * limit;
-  output_ptr += thread_stride * indices_element_size;
+  input_ptr += thread_stride * inner_size * limit;
+  output_ptr += thread_stride * inner_size * indices_element_size;
   return GatherInt8(input_ptr, output_ptr, count, inner_size, limit, indices_ptr, indices_element_size, param_);
 }