Fix gcc-15 'must be an 8-bit immediate' in avx_128 swizzle#1387
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serge-sans-paille merged 1 commit intoJul 22, 2026
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g++-15 rejects a constexpr helper call passed inline to _mm_permute_ps/
_mm_permute_pd ('the last argument must be an 8-bit immediate'). Bind the
mod_shuffle result to a constexpr local first, matching the convention used
at every other call site in the codebase.
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g++-15 rejects a
constexprhelper call passed inline to_mm_permute_ps/_mm_permute_pd:It refuses to constant-fold a
constexprfunction call directly at a builtin immediate operand unless the value is first bound to aconstexprobject. Every otherdetail::mod_shuffle/detail::shufflecall site in the codebase already does this; these twoswizzleoverloads inxsimd_avx_128.hppwere the only inline exceptions.