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Extend _mm_madd_epi16 test to check cases with large values.

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Eduardo Sánchez Muñoz 2023-10-16 18:48:30 +02:00 • committed by Amanieu d'Antras
parent ea27e5cfcb
commit d2970f4514
1 changed files with 26 additions and 0 deletions
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26
library/stdarch/crates/core_arch/src/x86/sse2.rs
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@ -3139,6 +3139,32 @@ mod tests {
let r = _mm_madd_epi16(a, b);
let e = _mm_setr_epi32(29, 81, 149, 233);
assert_eq_m128i(r, e);
// Test large values.
// MIN*MIN+MIN*MIN will overflow into i32::MIN.
let a = _mm_setr_epi16(
i16::MAX,
i16::MAX,
i16::MIN,
i16::MIN,
i16::MIN,
i16::MAX,
0,
0,
);
let b = _mm_setr_epi16(
i16::MAX,
i16::MAX,
i16::MIN,
i16::MIN,
i16::MAX,
i16::MIN,
0,
0,
);
let r = _mm_madd_epi16(a, b);
let e = _mm_setr_epi32(0x7FFE0002, i32::MIN, -0x7FFF0000, 0);
assert_eq_m128i(r, e);
}
#[simd_test(enable = "sse2")]