def test_index_mode_detection(self, indexed, expected):
"""
Test detection of IterationInstance access modes (AFFINE vs IRREGULAR).
Proper detection of access mode is a prerequisite to any sort of
data dependence analysis.
"""
grid = Grid(shape=(4, 4, 4))
x, y, z = grid.dimensions # noqa
sx = SubDimension.middle('sx', x, 1, 1) # noqa
u = Function(name='u', grid=grid) # noqa
c = Constant(name='c') # noqa
sc = Scalar(name='sc', is_const=True) # noqa
s = Scalar(name='s') # noqa
ii = IterationInstance(eval(indexed))
assert ii.index_mode == expected
def ii_literal(self, fa, fc):
fax = IterationInstance(fa[x])
fcxy = IterationInstance(fc[x, y])
fcx1y = IterationInstance(fc[x + 1, y])
return fax, fcxy, fcx1y
def ii_num(self, fa, fc):
fa4 = IterationInstance(fa[4])
fc00 = IterationInstance(fc[0, 0])
fc11 = IterationInstance(fc[1, 1])
fc23 = IterationInstance(fc[2, 3])
return fa4, fc00, fc11, fc23