* add grid sampler

* reset act

* fix conflict and readme, test=develop

* fix ios v8 run error

* fix grid_sampler compute error. test=develop

* fix exp act run error, test=develop

* fix format, test=develop

* fix leakyrelu and tanh compute error, test=develop

* delete extra file, test=develop

* reset act

* fix conflict and readme, test=develop

* fix ios run error, test=develop

* [LITE][OPENCL] Support video-sr feature using OpenCL FP16 Image. test=develop

* optimize image2d_to_buffer_with_post255. test=develop

* add def debug in cl kernel. test=develop

* remove conv image code in conv buffer. test=develop

* add sequence_conv op and arm kernel

* add test, test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* modify code style. test=develop

* fix ut, test=develop

* delete unused code, test=develop

* replace vlog with log in pool, add each run duration print in test. test=develop

* change layout file path. test=develop

* fix act, layout image kernel. test=develop

* fix spell error. test=develop

* remove clfinish in act, concat, layout, nearest_interp. test=develop

* add RELU macro define in fc opencl kernel. test=develop

* add cpu_ref print in activation opencl kernel.test=develop

* fix layout ut. test=develop

* replace log with vlog. test=develop

* fix get output. test=develop

* feat: add lstm op && kernel
      test=develop

* [Lite][OpenCL]Add pre_process & post_process layout kernel. test=develop

* [Lite][OpenCL]pre_process & post_process layout kernel Code style.test=develop

* [LITE][OPENCL][Image] fix issue in concat and nearest_interp  thx for chenj and ys,test=develop

* [LITE][OPENCL][Image] fix issue in concat and nearest_interp  thx for chenj and ys,test=develop

* fix conv 2-pad to 4-pad

* fix compute conv shape

* fix pad, test=develop

* change conv_depthwise_3x3s1_fp.cc name to conv3x3s1p01_depthwise_fp32.cc to distinguish between conv3x3s1_depthwise_fp32.cc

* delete printf note in conv3x3s1, test=develop

* delete printf note, test=develop

* delete gem_sdot.h, test=develop

it is coped from __gemm_sdot_meta_.h

* update compute padding, test=develop

* fix padding size, must be 2 or 4. test=develop

* fix format in operators/conv_op.cc, test=develop

* change #if 0 to #if 1, test=develop

* put 2-pad to 4-pad in AttachImpl, test=develop

* fix clang-format error inn tests/math/connv_compute_test, test=develop

* fix x86 test result error, test=develop

* add asymmetric padding test case in liite/tests/math/conv_compute.cc, test=develop

* change paddings type to support dynamically modify, test=develop

* fix x86 build error in connv_compute_test, test=develop

* fix opencl build error, test=develop

* fix oopencl build error, test=develop

* fix  opencl/conv_compute build error, test=develop

* fix  opencl/conv_compute build error, test=develop

* fix format in kernels/opencl/conv_computte_ttest,test=develop

* fix build error, test=develop

fix build error in kernels/x86/conv_compute.h

* fix ccompute shape error in ooperators/conv_op.h, test=develop

* add conv_reelu6 and conv leaky_relu in conv_3x3s1_direct

* add conv_relu6 in c1, c2, c4,test=develop

* fix conflict in conv_bloock_utils.h, test=develop

* add relu6 and leankyrelu in conv_3x3s1_dw

* add conv_3x3s1px_dw relu6 and leaky_relu fusion, test=develop

* fix conflict in tests/math/conv_compute_arm, test=develop

* fix build error in winograd arm, test=develop

* channge act_param as pointer in conv_block_tuils.h, test=develop

* fix winograd in no equal 4-padding compute error, test=develop

* add conv relu6 and leaky_relu in conv_dw_3x3s2, test=develop

* fix format, test=develop

* fix format in conv_block_utils, test=develop

* move updatePadding from conv_op.cc to conv_op.h, test=develop

* fix format conv_op.h, test=develop

* fix buuilde error in conv_oop.h, test=develop

* remove flag_relu parameter in conv_3x3_depthwise, test=develop

* add conv relu6/lleakyrelu in sgemm, test=develop

* delete some notes, test=develop

* fix format, test=develop

* fix build moobile_android error, test=develop

* change matmul, conv_transpose, mul and fc in using sgemm, test=develop

* fix build error in sgemm_test.ccc, test=develop

* add act_param in gru_utils. test=develop

* fix compute error in conv_dw, test=develop

* delete con2d_transpose test, test=develop

delete con2d_transpose test, this test can found in test/math/

* fix build error, test=develop

* add conv5x5s2_dw. pooling1x1s2_max, conv_act_fusion include relu6 and leaky_relu, teest=develop

* fix fc_reluu fusion error, test=develop

* fix compute error， test=develop

* delete conv5x5s2p2_dw, test=develop

* delete extra nnoote, test=develop

* delete conv_relu6 fusion in conv_activation_fuse_pass, test=develop

* fix build error, test=develop

* fix test error in kernel, test=develop

kernel/arm/test_pool_compute

* fix no equal pooling compute error, test=develop

* free space, test=develop

* fix con5x5s2_dw compute error, test=develop

* fix fromat, test=develop

* fix hin compute. test=develop

* fix con_dw leakyrelu compute error

* fix conv3x3s1_dw leakyRelu compute error

* delte note, test=develop

* fix format, test=develop

* fix format in conv_compute_test, test=develop

* add conv+relu6/leakyRelu fusion, test=develop

* fix format bug, test=develop

* fix format, test=develop

* fix format. test=develop

* fix format bug, test=develop

* fix con+relu6/leakyRelu fusion in Fp32, test=develop

* note m=397 in sgemv_int8 ut, test=develop

* note m=397 in sgemv_int8 ut, test=develop

* fix ios build error. test=develop

* add ut

* fix calib compute in int32_to_int8, test=develop

* add classify ut

* add classify demo

* add classify demo

* fix build error

* fix model_test_classify format

* fix format, test=develop

* fix v7 buiild error

* fix run ut errorr

* fix format and run ut Error, test=develop

* fix build.sh, test=develop

* fix format, test=develop

* fix format. test=develop

* fix format, test=develop

* fix no-equal padding , test=develop

* fix pooling

* add no-equal padding inn pooling, test=develop

* fix un-equal padding error. test=develop

* fix conv+relu6 int8 fusion error, test=develop

* fix int8 conv+relu6 error, test=develop

* fix format, test=develop

* delete pool_compute_test, test=develop

* fix image compute error, test=develop

* [LITE][OPENCL][Image] conv 1x1 5x5 7x7 suite

# Conflicts:
#	lite/kernels/opencl/conv_image_compute_test.cc

* [LITE][OPENCL][Image] conv 1x1 5x5 7x7 suite,test=develop

* [LITE][OPENCL][Image] conv 1x1 5x5 7x7 suite,test=develop

* [LITE][OPENCL][Image] conv 1x1 5x5 7x7 suite,test=develop

* [LITE][OPENCL][Image] conv 1x1 5x5 7x7 suite,rm1x1 old,test=develop

* Support lac model, fix bug for argmax lod_reset, test=develop

[LITE][OPENCL] support fp16 for cl_image_converter, layout, activation all OpenCL image kernel. test=develop (#2964)

* [LITE][OPENCL] support fp16 for cl_image_converter, layout, activation image kernel. test=develop

* add conv, depthwise and UT. test=develop

* add pool, conv, nearest_interp kernel. test=develop

* support fp16 for scale, reshape, concat, fc buffer opencl kernel. test=develop

* refactor for mul opencl buffer kernel. test=develop

* support fp16 for elementwise_mul opecl image kernel. test=develop

* support fp16 for elementwise_mul opencl image kernel. test=develop

* support fp16 for ele_add, fuse_ele_add_act opencl kernel. test=develop

* rename io_copy. test=develop

* mobilenetv1,v2 passed on 855. test=develop

* fix opt for opencl. test=develop

Optimize cuda kernel and remove io_copy added by default due to missing fetch_cuda kernel

* fix caliberate error, values from [-128, 127] to [-127, 127], test=develop
* add classify demo and detection demo, test=develop

* Optimize softmax. When the input tensor is 2-D and axis is 1, there is no need to resize.

* Optimize the gru, avoid calling Tensor::Slice.
test=develop

* Remove a std::vector in softmax.
test=develop

* Define CalculateSeqWidth to get the width of a sequence.
test=develop

* comment All opencl buffer kernels. test=develop

* refactor conv, depthwise into one routing selection. test=develop

fix fpga lite_tensor compile bug
     add fake quantize_abs_max op
     test=develop

* replace gru RowWiseAdd Eigen with c implementation
test=develop

* [LITE][OPENCL] Add opencl image2d conv3x3. test=develop

* [LITE][OPENCL]Add scale kernel.

* [LITE][OPENCL]Add scale kernel, format code style.

add concat ut, test=develop

* fix axis compute, test=develop

* add other axis, test=develop

* fix ut. test=develop

* fix con+relu6/leakyRelu fusion in Fp32, test=develop

* note m=397 in sgemv_int8 ut, test=develop

* fix ios build error. test=develop

 fix conv_winograd multithreads bug 

* [ARM] add 5x5s2 depthwise conv armv8 impl, test=develop

* [ARM] add int8 5x5s2 dw conv armv7 impl, test=develop

* [ARM] add int8 5x5s2 dw conv impl, test=develop

* [ARM] close int8 conv ut, test=develop

[OPENCL] add sigmoid image2d kernel and ut

* fix: update fpga backend and kernel
test=develop

* style: style fix
test=develop

* Optimize the transform from Paddle' Tensor to EigenVector, avoiding defining multiple DDim.

* Optimize the compute implementation of several operators.
test=develop

[LITE][OPENCL] Add 3 kernels of ElementwiseAdd/FusionElemenwiseAddAct op with opencl image format (#2844)

* [LITE][OPENCL] Add 3 kernels of ElementwiseAdd/FuseElementwiseAdd op. test=develop

* [LITE][OPENCL][Image]develop 1x1/5x5/7x7 routing in conv_compute ,test=develop

* [LITE][OPENCL][Image]develop 1x1/5x5/7x7 routing in conv_compute ,convert bias filter in prepare for run ,test=develop

* [LITE][OPENCL] remove useless code. test=develop

* [LITE][OPENCL] finish 4 kernel and unit tests of image2d opencl elementwise_mul kernel. test=develop

* [LITE][OPENCL] Fix little bug of ASSERT. test=develop

* [LITE][OPENCL] Fix bug of channel_mul_d2 and d4. test=develop

[arm] fix conv_dw leakyRelu compute error

* refactor 5x5s1 dw conv armv8, test=develop

* [ARM] refactor depthwise conv 5x5s1, and support relu6, leakey relu, test=develop

* [ARM] sgemv support fuse relu6 and leakey relu,test=develop

* [ARM] reduce some conv ut case, test=develop

* [ARM] fix 5x5dw conv pick kernel bug, test=develop

* fix code style, test=develop

* [ARM] fix sgemv fuse relu6 bug, test=develop

* [ARM] fix fp32 5x5s1 dw bug, test=develop

* [ARM] fix fp32 5x5 dw conv pick kernel bug, test=develop