SVE Instruction List by Dougall Johnson
UQRSHRNB: Unsigned saturating rounding shift right narrow by immediate (bottom)
UQRSHRNB Zd.S, Zn.D, #const (SVE2 (SME
svuint32_t svqrshrnb[_n_u64](svuint64_t op1, uint64_t imm2)
128-bit SVE
For each unsigned 64-bit integer set the even 32-bit elements of (2) to ( (1) + ( 1 << ( const − 1 ) ) >> const, truncating with unsigned saturation to 0xFFFFFFFF, and zero odd elements. This is the same as a regular shift, but with result incremented if the most-significant bit that was shifted out was set. The shift amount is limited to 1 ≤ const ≤ 32.
256-bit SVE
For each unsigned 64-bit integer set the even 32-bit elements of (2) to ( (1) + ( 1 << ( const − 1 ) ) >> const, truncating with unsigned saturation to 0xFFFFFFFF, and zero odd elements. This is the same as a regular shift, but with result incremented if the most-significant bit that was shifted out was set. The shift amount is limited to 1 ≤ const ≤ 32.
512-bit SVE
For each unsigned 64-bit integer set the even 32-bit elements of (2) to ( (1) + ( 1 << ( const − 1 ) ) >> const, truncating with unsigned saturation to 0xFFFFFFFF, and zero odd elements. This is the same as a regular shift, but with result incremented if the most-significant bit that was shifted out was set. The shift amount is limited to 1 ≤ const ≤ 32.
Larger sizes
1024-bit SVE
For each unsigned 64-bit integer set the even 32-bit elements of (2) to ( (1) + ( 1 << ( const − 1 ) ) >> const, truncating with unsigned saturation to 0xFFFFFFFF, and zero odd elements. This is the same as a regular shift, but with result incremented if the most-significant bit that was shifted out was set. The shift amount is limited to 1 ≤ const ≤ 32.
2048-bit SVE
For each unsigned 64-bit integer set the even 32-bit elements of (2) to ( (1) + ( 1 << ( const − 1 ) ) >> const, truncating with unsigned saturation to 0xFFFFFFFF, and zero odd elements. This is the same as a regular shift, but with result incremented if the most-significant bit that was shifted out was set. The shift amount is limited to 1 ≤ const ≤ 32.
Report mistakes or give feedback
Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.