On Tue, 12 Sep 2023, Sylvain Noiry via Gcc-patches wrote: > Summary: > Allow the creation and usage of builtins vectors of complex > in C, using __attribute__ ((vector_size ()))
If you're adding a new language feature like this, you need to update extend.texi to explain the valid uses of the attribute for complex types, and (under "Vector Extensions") the valid uses of the resulting vectors. You also need to add testcases to the testsuite for such vectors - both execution tests covering valid uses of the vectors, and tests that invalid declarations or uses of such vectors (uses with any operator, or other operand to such operator, that aren't valid) are properly rejected - go through all cases of operators, with one or two complex vector operands, of the same or different types, and with different choices for what type the other operand might be when one has complex vector type, and make sure they are all properly tested and do have the desired and documented semantics. If the intended semantics are the same for C and C++, the tests should be c-c++-common tests. Any cases where the intended semantics are different will need separate tests for each language or appropriately conditional test assertions in c-c++-common. -- Joseph S. Myers jos...@codesourcery.com
