https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96795
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-12 branch has been updated by Stam Markianos-Wright <stamm...@gcc.gnu.org>: https://gcc.gnu.org/g:7d3043505c770e96d5471edee2b97c8169f26316 commit r12-9557-g7d3043505c770e96d5471edee2b97c8169f26316 Author: Stam Markianos-Wright <stam.markianos-wri...@arm.com> Date: Thu Nov 10 15:02:47 2022 +0000 arm: further fix overloading of MVE vaddq[_m]_n intrinsic It was observed that in tests `vaddq_m_n_[s/u][8/16/32].c`, the _Generic resolution would fall back to the `__ARM_undef` failure state. This is a regression since `dc39db873670bea8d8e655444387ceaa53a01a79` and `6bd4ce64eb48a72eca300cb52773e6101d646004`, but it previously wasn't identified, because the tests were not checking for this kind of failure. The above commits changed the definitions of the intrinsics from using `[u]int[8/16/32]_t` types for the scalar argument to using `int`. This allowed `int` to be supported in user code through the overloaded `#defines`, but seems to have broken the `[u]int[8/16/32]_t` types The solution implemented by this patch is to explicitly use a new _Generic mapping from all the `[u]int[8/16/32]_t` types for int. With this change, both `int` and `[u]int[8/16/32]_t` parameters are supported from user code and are handled by the overloading mechanism correctly. Note that in these scalar cases it is safe to pass the raw p<n>, rather than the typeof-ed __p<n>, because we are not at risk of the _Generics being exponentially expanded on the `n` scalar argument to an `_n` intrinsic. Using p<n> instead will give a more accurate error message to the user, should something be wrong with that argument. gcc/ChangeLog: PR target/96795 * config/arm/arm_mve.h (__arm_vaddq_m_n_s8): Change types. (__arm_vaddq_m_n_s32): Likewise. (__arm_vaddq_m_n_s16): Likewise. (__arm_vaddq_m_n_u8): Likewise. (__arm_vaddq_m_n_u32): Likewise. (__arm_vaddq_m_n_u16): Likewise. (__arm_vaddq_m): Fix Overloading. (__ARM_mve_coerce3): New. (cherry picked from commit e0dd75fe90ef4cda94f431747d239d6cfcf5656f)
