pytorch

5499e839 - [Fuser] Do not attempt to use OpenMP if build without OpenMP support (#51504)

[Fuser] Do not attempt to use OpenMP if build without OpenMP support (#51504) Summary: Clang from XCode does not support `-fopenmp` option, no need to try to compile with it. Infer whether OpenMP is supported by checking _OPENMP define. Also, use clang compiler if host app was compiled with clang rather than gcc. Fix few range loop warnings and add static_asserts that range loop variables are raw pointers. This changes makes fuser tests on OS X a bit faster. Before: ``` % python3 test_jit.py -v TestScript.test_batchnorm_fuser_cpu Fail to import hypothesis in common_utils, tests are not derandomized CUDA not available, skipping tests test_batchnorm_fuser_cpu (__main__.TestScript) ... clang: error: unsupported option '-fopenmp' clang: error: unsupported option '-fopenmp' warning: pytorch jit fuser failed to compile with openmp, trying without it... ok ---------------------------------------------------------------------- Ran 1 test in 0.468s OK ``` After: ``` % python3 test_jit.py -v TestScript.test_batchnorm_fuser_cpu Fail to import hypothesis in common_utils, tests are not derandomized CUDA not available, skipping tests test_batchnorm_fuser_cpu (__main__.TestScript) ... ok ---------------------------------------------------------------------- Ran 1 test in 0.435s OK ``` Pull Request resolved: https://github.com/pytorch/pytorch/pull/51504 Reviewed By: smessmer Differential Revision: D26186875 Pulled By: malfet fbshipit-source-id: 930b3bcf543fdfad0f493d687072aaaf5f9e2bfc