[!301] Avoid get_option in innermost loop when determining quadrature points

Merge branch 'bugfix/avoid-get-option-in-innermost-loops' into 'master'

ref:extensions/dune-codegen This fixes a code generation performance bug in
sum factorized code. It also reveals that statistic profiling could be
superhelpful to us.

See merge request [extensions/dune-codegen!301]

  [extensions/dune-codegen!301]: gitlab.dune-project.org/extensions/dune-codegen/merge_requests/301

python/dune/codegen/pdelab/geometry.py

@@ -27,6 +27,8 @@ from loopy.match import Writes
 import numpy as np
 import pymbolic.primitives as prim
 
+from pytools import memoize
+
 
 @geometry_mixin("base")
 class GeometryMixinBase(object):
@@ -472,6 +474,7 @@ def name_in_cell_geometry(restriction):
     return name
 
 
+@memoize
 def world_dimension():
     data = get_global_context_value("data")
     form = data.object_by_name[get_form_option("form")]

python/dune/codegen/sumfact/tabulation.py

@@ -273,6 +273,7 @@ def quadrature_points_per_direction():
 
     # Quadrature points in per direction
     nb_qp = tuple(order // 2 + 1 for order in q)
+    _quad = nb_qp
 
     return nb_qp