💬 Comment on #73: Verify __builtin_ia32_punpckhdq128 under clang in crc32.c

Closing — the new build-clang CI job (#72, commit f9ad4c7) ran make CC=clang on ubuntu-latest and succeeded. Clang ships __builtin_ia32_punpckhdq128 as a native builtin, so no 7th alias is needed.

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🚀 New Release: v4.12.2


Build hygiene. No runtime changes.

- Compile cleanly with make CC=clang on x86_64 (#68). Adds _mm_*
intrinsic shims for the GCC-only __builtin_ia32_* names used in
src/common/crc32.c, gated to x86 so Apple Silicon clang isn't
affected.
- New build-clang job in the CI matrix exercises the clang x86_64
build path so future regressions surface in CI rather than only in
third-party packaging (#72).

Release notes | GitHub