On Mon, Jun 23, 2025 at 10:05 PM Nathan Bossart <nathandboss...@gmail.com> wrote: > > On Mon, Jun 23, 2025 at 10:51:21AM -0400, Tom Lane wrote: > > This has broken the build completely on my RHEL8 x86_64 box, > > with gcc 8.5.0: > > > > $ ./configure ... > > $ make -s > > pg_crc32c_sse42.c: In function 'pg_comp_crc32c_avx512': > > pg_crc32c_sse42.c:126:25: warning: implicit declaration of function > > '_mm512_zextsi128_si512'; did you mean '_mm512_castsi128_si512'? > > [-Wimplicit-function-declaration] > > x0 = _mm512_xor_si512(_mm512_zextsi128_si512(_mm_cvtsi32_si128(crc0)), > > x0); > > ^~~~~~~~~~~~~~~~~~~~~~ > > _mm512_castsi128_si512 > > It looks like thse weren't added until GCC 10 [0].
Huh, that's surprising because the Intel manual put it in AVX-512F, the basic core around which everything else is tacked on. -- John Naylor Amazon Web Services
