On Wed, Jul 19, 2023 at 5:44 PM Andrew Carlotti via Gcc-patches <gcc-patches@gcc.gnu.org> wrote: > > Updated patch to fix the fp16 intrinsic pragmas, and pushed to master. > OK to backport to GCC 13? > > > Many intrinsics currently depend on both an architecture version and a > feature, despite the corresponding instructions being available within > GCC at lower architecture versions. > > LLVM has already removed these explicit architecture version > dependences; this patch does the same for GCC. Note that +fp16 does not > imply +simd, so we need to add an explicit +simd for the Neon fp16 > intrinsics. > > Binutils did not previously support all of these architecture+feature > combinations, but this problem is already reachable from GCC. For > example, compiling the test gcc.target/aarch64/usadv16qi-dotprod.c > with -O3 -march=armv8-a+dotprod has resulted in an assembler error since > GCC 10. This is fixed in Binutils 2.41.
Are there any implementations that actually implement v8-a + dotprod ?. As far as I'm aware this was v8.2-A as the base architecture where this was allowed. Has this changed recently? regards Ramana
