fix fp16 multi threads bug

mindspore/lite/src/runtime/kernel/arm/base/merge.cc

@@ -139,6 +139,7 @@ int MergeCPUKernel::Run() {
 }
 
 REG_KERNEL(kCPU, kNumberTypeFloat32, PrimitiveType_Merge, LiteKernelCreator<MergeCPUKernel>)
+REG_KERNEL(kCPU, kNumberTypeFloat16, PrimitiveType_Merge, LiteKernelCreator<MergeCPUKernel>)
 REG_KERNEL(kCPU, kNumberTypeBool, PrimitiveType_Merge, LiteKernelCreator<MergeCPUKernel>)
 REG_KERNEL(kCPU, kNumberTypeInt32, PrimitiveType_Merge, LiteKernelCreator<MergeCPUKernel>)
 }  // namespace mindspore::kernel

mindspore/lite/src/runtime/kernel/arm/base/reshape_base.cc

@@ -41,11 +41,12 @@ int ReshapeBaseCPUKernel::ReSize() {
 
 int ReshapeBaseCPUKernel::RunImpl(int task_id) {
   size_t start_index = task_id * cal_max_num_per_thread_;
-  auto cur_in_ptr = input_ptr_ + start_index;
-  auto cur_out_ptr = output_ptr_ + start_index;
-  if (start_index > in_tensors_.front()->Size()) {
+  if (start_index >= in_tensors_.front()->Size()) {
     return RET_OK;
   }
+  auto cur_in_ptr = input_ptr_ + start_index;
+  auto cur_out_ptr = output_ptr_ + start_index;
+
   size_t data_size = in_tensors_.front()->Size() - start_index;
   data_size = data_size > cal_max_num_per_thread_ ? cal_max_num_per_thread_ : data_size;
   memcpy(cur_out_ptr, cur_in_ptr, data_size);

mindspore/lite/src/runtime/kernel/arm/base/stack_base.cc

@@ -55,7 +55,7 @@ int StackBaseCPUKernel::ReSize() {
   axis_ = param->axis_ < 0 ? param->axis_ + input0_shape.size() + 1 : param->axis_;
   auto input_nums = in_tensors_.size();
   if (input_nums == 1) {
-    copy_size_ = in_tensors_.front()->Size();
+    copy_size_ = in_tensors_.front()->ElementsNum() * data_type_size_;
   } else {
     MS_ASSERT(input_nums > 1);
     copy_size_ = GetCopyNum(input0_shape, axis_, input0_shape.size()) * data_type_size_;

mindspore/lite/src/runtime/kernel/arm/base/switch.cc

@@ -93,6 +93,7 @@ int SwitchCPUKernel::Run() {
 }
 
 REG_KERNEL(kCPU, kNumberTypeFloat32, PrimitiveType_Switch, LiteKernelCreator<SwitchCPUKernel>)
+REG_KERNEL(kCPU, kNumberTypeFloat16, PrimitiveType_Switch, LiteKernelCreator<SwitchCPUKernel>)
 REG_KERNEL(kCPU, kNumberTypeBool, PrimitiveType_Switch, LiteKernelCreator<SwitchCPUKernel>)
 REG_KERNEL(kCPU, kNumberTypeInt32, PrimitiveType_Switch, LiteKernelCreator<SwitchCPUKernel>)
 }  // namespace mindspore::kernel

mindspore/lite/src/runtime/kernel/arm/fp16/activation_fp16.cc

@@ -51,6 +51,9 @@ int ActivationFp16CPUKernel::DoActivation(int task_id) {
 
   int stride = UP_DIV(length, thread_count_);
   int count = MSMIN(stride, length - stride * task_id);
+  if (count <= 0) {
+    return RET_OK;
+  }
 
   int error_code;
   if (type_ == schema::ActivationType_RELU) {

mindspore/lite/src/runtime/kernel/arm/fp16/arithmetic_compare_fp16.cc

@@ -126,6 +126,9 @@ int ArithmeticCompareFP16CPUKernel::DoArithmetic(int task_id) {
   int cur_offset = stride_per_thread * task_id;
   int cur_count = param_->broadcasting_ ? MSMIN(stride_per_thread, outside_ - cur_offset)
                                         : MSMIN(stride_per_thread, param_->out_elements_num_ - cur_offset);
+  if (cur_count <= 0) {
+    return RET_OK;
+  }
 
   int ret = RET_OK;
   if (param_->broadcasting_) {

mindspore/lite/src/runtime/kernel/arm/fp16/arithmetic_fp16.cc

@@ -169,6 +169,9 @@ int ArithmeticFP16CPUKernel::DoArithmetic(int task_id) {
   int cur_offset = stride_per_thread * task_id;
   int cur_count = param_->broadcasting_ ? MSMIN(stride_per_thread, outside_ - cur_offset)
                                         : MSMIN(stride_per_thread, param_->out_elements_num_ - cur_offset);
+  if (cur_count <= 0) {
+    return RET_OK;
+  }
 
   int ret = RET_OK;
   if (param_->broadcasting_) {

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

@@ -88,6 +88,9 @@ int GatherFp16CPUKernel::DoGather(int task_id) {
   }
   int stride = UP_DIV(outer_size, op_parameter_->thread_num_);
   int count = MSMIN(stride, outer_size - stride * task_id);
+  if (count <= 0) {
+    return RET_OK;
+  }
   auto thread_stride = stride * task_id;
   int8_t *int8_in = nullptr;
   if (input_tensor->data_type() == kNumberTypeFloat32) {

mindspore/lite/src/runtime/kernel/arm/fp32/activation_fp32.cc

@@ -54,6 +54,9 @@ int ActivationCPUKernel::DoActivation(int task_id) {
 
   int stride = UP_DIV(length, thread_count_);
   int count = MSMIN(stride, length - stride * task_id);
+  if (count <= 0) {
+    return RET_OK;
+  }
 
   auto ret = RET_OK;
 

mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_compare_fp32.cc

@@ -68,6 +68,9 @@ int ArithmeticCompareCPUKernel::DoArithmetic(int task_id) {
   MS_ASSERT(thread_count_ != 0);
   int stride = UP_DIV(element_num, thread_count_);
   int count = MSMIN(stride, element_num - stride * task_id);
+  if (count <= 0) {
+    return RET_OK;
+  }
 
   if (func_fp32_ == nullptr) {
     MS_LOG(ERROR) << "func_fp32_ function is nullptr!";

mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_fp32.cc

@@ -288,6 +288,9 @@ int ArithmeticCPUKernel::DoArithmetic(int task_id) {
   MS_ASSERT(thread_count_ != 0);
   int stride = UP_DIV(element_num, thread_count_);
   int count = MSMIN(stride, element_num - stride * task_id);
+  if (count <= 0) {
+    return RET_OK;
+  }
 
   if (arithmetic_run_ == nullptr) {
     MS_LOG(ERROR) << "arithmetic_run function is nullptr!";

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

@@ -57,6 +57,9 @@ int GatherCPUKernel::DoGather(int task_id) {
   }
   int stride = UP_DIV(outer_size, op_parameter_->thread_num_);
   int count = MSMIN(stride, outer_size - stride * task_id);
+  if (count <= 0) {
+    return RET_OK;
+  }
   auto thread_stride = stride * task_id;
 
   int8_t *int8_in = reinterpret_cast<int8_t *>(input_tensor->data_c());

mindspore/lite/src/runtime/kernel/arm/fp32/power_fp32.cc

@@ -57,6 +57,9 @@ int PowerCPUKernel::RunImpl(int task_id) {
   auto size = in_tensors_.at(0)->ElementsNum();
   int stride = UP_DIV(size, thread_count_);
   int len = MSMIN(stride, size - stride * task_id);
+  if (len <= 0) {
+    return RET_OK;
+  }
   float *exp_addr = nullptr;
   bool broadcast = true;
   if (in_tensors_.size() == 2) {