[Bug target/93594] Missed optimization with _mm256_set/setr_m128i intrinsics

[andysem at mail dot ru]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93594

--- Comment #2 from andysem at mail dot ru ---
Another test case:

__m256i cvt_permute(__m128i low)
{
    return _mm256_permute2x128_si256(_mm256_castsi128_si256(low),
_mm256_castsi128_si256(low), 0x80);
}

https://gcc.godbolt.org/z/4Ddt3C