blob: 26dd1fb90925bf4542d8e35d13c03a36bf6c020a [file] [log] [blame]
.. title:: clang-tidy - altera-id-dependent-backward-branch
Finds ID-dependent variables and fields that are used within loops. This causes
branches to occur inside the loops, and thus leads to performance degradation.
.. code-block:: c++
// The following code will produce a warning because this ID-dependent
// variable is used in a loop condition statement.
int ThreadID = get_local_id(0);
// The following loop will produce a warning because the loop condition
// statement depends on an ID-dependent variable.
for (int i = 0; i < ThreadID; ++i) {
std::cout << i << std::endl;
// The following loop will not produce a warning, because the ID-dependent
// variable is not used in the loop condition statement.
for (int i = 0; i < 100; ++i) {
std::cout << ThreadID << std::endl;
Based on the `Altera SDK for OpenCL: Best Practices Guide