Use get_type_of_expression in typing_form_sympy_inspection to infer types
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DANGER ZONE: this changes something in the core behavior of pystencils. Be careful before merging!
In summary, when typing_form_sympy_inspection reaches the point where it would just use default_type, we try to use get_type_of_expression to infer the actual type.
We use information of previously defined variables in current scope.
Another approach would be to just type all the intermediate variable with auto.
x = pystencils.fields('x: float32[3d]')
assignments = pystencils.AssignmentCollection({
a: cast_func(10, create_type('float64')),
b: cast_func(10, create_type('uint16')),
e: 11,
c: b,
f: c + b,
d: c + b + x.center + e,
x.center: c + b + x.center
})Before:
FUNC_PREFIX void kernel(float * RESTRICT _data_x, int64_t const _size_x_0, int64_t const _size_x_1,
int64_t const _size_x_2, int64_t const _stride_x_0, int64_t const _stride_x_1, int64_t const _stri
de_x_2)
{
const double a = 10.0;
const double b = 10;
const double e = 11.0;
const double c = b;
const double f = b + c;
for (int ctr_0 = 0; ctr_0 < _size_x_0; ctr_0 += 1)
{
float * RESTRICT _data_x_00 = _data_x + _stride_x_0*ctr_0;
for (int ctr_1 = 0; ctr_1 < _size_x_1; ctr_1 += 1)
{
float * RESTRICT _data_x_00_10 = _stride_x_1*ctr_1 + _data_x_00;
for (int ctr_2 = 0; ctr_2 < _size_x_2; ctr_2 += 1)
{
const double d = b + c + e + _data_x_00_10[_stride_x_2*ctr_2];
_data_x_00_10[_stride_x_2*ctr_2] = b + c + _data_x_00_10[_stride_x_2*ctr_2];
}
}
}
}
After:
FUNC_PREFIX void kernel(float * RESTRICT _data_x, int64_t const _size_x_0, int64_t const _size_x_1,
int64_t const _size_x_2, int64_t const _stride_x_0, int64_t const _stride_x_1, int64_t const _stri
de_x_2)
{
const double a = 10.0;
const uint16_t b = 10;
const int64_t e = 11.0;
const uint16_t c = b;
const uint16_t f = b + c;
for (int ctr_0 = 0; ctr_0 < _size_x_0; ctr_0 += 1)
{
float * RESTRICT _data_x_00 = _data_x + _stride_x_0*ctr_0;
for (int ctr_1 = 0; ctr_1 < _size_x_1; ctr_1 += 1)
{
float * RESTRICT _data_x_00_10 = _stride_x_1*ctr_1 + _data_x_00;
for (int ctr_2 = 0; ctr_2 < _size_x_2; ctr_2 += 1)
{
const float d = b + c + e + _data_x_00_10[_stride_x_2*ctr_2];
_data_x_00_10[_stride_x_2*ctr_2] = b + c + _data_x_00_10[_stride_x_2*ctr_2];
}
}
}
}