fix bug of reverse

mindspore/lite/src/runtime/kernel/arm/fp32/reverse_fp32.cc

@@ -37,6 +37,9 @@ int ReverseCPUKernel::Stride(int index) {
 }
 
 int ReverseCPUKernel::ReSize() {
+  // trans negative to positive axis
+  UpdateAxisInfo();
+
   data_size_ = in_tensors_.at(0)->ElementsNum();
   thread_sz_count_ = MSMIN(op_parameter_->thread_num_, data_size_);
   thread_sz_stride_ = UP_DIV(data_size_, thread_sz_count_);
@@ -134,6 +137,16 @@ int ReverseCPUKernel::Run() {
   return RET_OK;
 }
 
+void ReverseCPUKernel::UpdateAxisInfo() {
+  auto reverse_param = reinterpret_cast<ReverseParameter *>(op_parameter_);
+  int in_shape_len = in_tensors_.front()->shape().size();
+  for (int i = 0; i < reverse_param->num_axis_; ++i) {
+    if (reverse_param->axis_[i] < 0) {
+      reverse_param->axis_[i] += in_shape_len;
+    }
+  }
+}
+
 REG_KERNEL(kCPU, kNumberTypeFloat32, PrimitiveType_ReverseV2, LiteKernelCreator<ReverseCPUKernel>)
 REG_KERNEL(kCPU, kNumberTypeInt32, PrimitiveType_ReverseV2, LiteKernelCreator<ReverseCPUKernel>)
 }  // namespace mindspore::kernel

mindspore/lite/src/runtime/kernel/arm/fp32/reverse_fp32.h

@@ -28,7 +28,7 @@ class ReverseCPUKernel : public LiteKernel {
   ReverseCPUKernel(OpParameter *parameter, const std::vector<lite::Tensor *> &inputs,
                    const std::vector<lite::Tensor *> &outputs, const lite::InnerContext *ctx)
       : LiteKernel(parameter, inputs, outputs, ctx) {}
-  ~ReverseCPUKernel() {
+  ~ReverseCPUKernel() override {
     if (tmp_ != nullptr) {
       free(tmp_);
       tmp_ = nullptr;
@@ -42,6 +42,7 @@ class ReverseCPUKernel : public LiteKernel {
   int DoReverse(int task_id);
 
  private:
+  void UpdateAxisInfo();
   int thread_sz_count_ = 0;
   int thread_sz_stride_ = 0;
   int data_size_ = 0;