Function core::arch::x86::_mm_sha1rnds4_epu32

pub unsafe fn _mm_sha1rnds4_epu32(
    a: __m128i, 
    b: __m128i, 
    const FUNC: i32
) -> __m128i

This is supported on x86 and target feature sha only.

Performs four rounds of SHA1 operation using an initial SHA1 state (A,B,C,D) from a and some pre-computed sum of the next 4 round message values (unsigned 32-bit integers), and state variable E from b, and return the updated SHA1 state (A,B,C,D). FUNC contains the logic functions and round constants.

Intel’s documentation