add addmm op to the benchmark suite (#29783)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/29783
Add addmm operator which reuses existing input shapes for the add operator.
Test Plan:
```
buck run //caffe2/benchmarks/operator_benchmark/pt:add_test -- --iterations 1
# ----------------------------------------
# PyTorch/Caffe2 Operator Micro-benchmarks
# ----------------------------------------
# Tag : short
# Benchmarking PyTorch: addmm
# Mode: Eager
# Name: addmm_M64_N64_K64_cpu
# Input: M: 64, N: 64, K: 64, device: cpu
Forward Execution Time (us) : 759.237
# Benchmarking PyTorch: addmm
# Mode: Eager
# Name: addmm_M64_N64_K128_cpu
# Input: M: 64, N: 64, K: 128, device: cpu
Forward Execution Time (us) : 922.764
# Benchmarking PyTorch: addmm
# Mode: Eager
# Name: addmm_M64_N64_K64_cpu_bwdall
# Input: M: 64, N: 64, K: 64, device: cpu
Backward Execution Time (us) : 4689.546
# Benchmarking PyTorch: addmm
# Mode: Eager
# Name: addmm_M64_N64_K64_cpu_bwd1
# Input: M: 64, N: 64, K: 64, device: cpu
Backward Execution Time (us) : 1700.093
# Benchmarking PyTorch: addmm
# Mode: Eager
# Name: addmm_M64_N64_K64_cpu_bwd2
# Input: M: 64, N: 64, K: 64, device: cpu
Backward Execution Time (us) : 2947.427
# Benchmarking PyTorch: addmm
# Mode: Eager
# Name: addmm_M64_N64_K64_cpu_bwd3
# Input: M: 64, N: 64, K: 64, device: cpu
Backward Execution Time (us) : 2518.043
# Benchmarking PyTorch: addmm
# Mode: Eager
# Name: addmm_M64_N64_K128_cpu_bwdall
# Input: M: 64, N: 64, K: 128, device: cpu
Backward Execution Time (us) : 5848.369
Reviewed By: bddppq
Differential Revision: D18496476
fbshipit-source-id: 4f1c116a2676a64106afa958e8c8a8e109f35a4a
