https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86487
--- Comment #11 from Vladimir Makarov <vmakarov at gcc dot gnu.org> --- (In reply to avieira from comment #10) > Hi Vlad, > > I don't think it is a duplication. Sorry, I was not clear. My comment relates to test #include <arm_neon.h> int32x2_t b(long c, ...) {} $ arm-none-eabi-gcc -march=armv7-a -c test.c -mfloat-abi=hard -mfpu=neon test.c: In function 'b': test.c:1:1: error: insn does not satisfy its constraints: 1 | __simd64_int32_t b(long c, ...) {} | ^~~~~~~~~~~~~~~~ (insn 6 11 9 2 (set (reg/i:V2SI 0 r0) (reg:V2SI 2 r2 [orig:110 <retval> ] [110])) "test.c":1:1 939 {*neon_movv2si} (nil))