ENH: [6/7] enable multi-platform SIMD compiler optimizations

  - Add new attributes to umath module

    * __cpu_baseline__ a list contains the minimal set of required optimizations
      that supported by the compiler and platform according to the specified
      values to command argument '--cpu-baseline'.

    * __cpu_dispatch__ a list contains the dispatched set of additional optimizations
      that supported by the compiler and platform according to the specified
      values to command argument '--cpu-dispatch'

  - Print required and additional optimizations during the run of PytestTester

1 files changed, 15 insertions, 0 deletions

diff --git a/numpy/_pytesttester.py b/numpy/_pytesttester.py
index ca86aeb22..1c32367f3 100644
--- a/numpy/_pytesttester.py
+++ b/numpy/_pytesttester.py
@@ -35,12 +35,27 @@ __all__ = ['PytestTester']
 
 
 def _show_numpy_info():
+    from numpy.core._multiarray_umath import (
+        __cpu_features__, __cpu_baseline__, __cpu_dispatch__
+    )
     import numpy as np
 
     print("NumPy version %s" % np.__version__)
     relaxed_strides = np.ones((10, 1), order="C").flags.f_contiguous
     print("NumPy relaxed strides checking option:", relaxed_strides)
 
+    if len(__cpu_baseline__) == 0 and len(__cpu_dispatch__) == 0:
+        enabled_features = "nothing enabled"
+    else:
+        enabled_features = ' '.join(__cpu_baseline__)
+        for feature in __cpu_dispatch__:
+            if __cpu_features__[feature]:
+                enabled_features += " %s*" % feature
+            else:
+                enabled_features += " %s?" % feature
+    print("NumPy CPU features:", enabled_features)
+
+
 
 class PytestTester:
     """