SVE Instruction List by Dougall Johnson
SRI: Shift right and insert (immediate)
SRI Zd.H, Zn.H, #const (SVE2 (SME
svint16_t svsri[_n_s16](svint16_t op1, svint16_t op2, uint64_t imm3)
svuint16_t svsri[_n_u16](svuint16_t op1, svuint16_t op2, uint64_t imm3)
128-bit SVE
For each 16-bit unsigned integer set (3) to ( (2) >> const ) | ( (1) & ~( 0xFFFF >> const ) ). This preserves the const most-significant bits from (1), while inserting the ( 16 − const ) most-significant bits from (2) into the least-significant bits of (3). The shift amount is limited to 1 ≤ const ≤ 16.
256-bit SVE
For each 16-bit unsigned integer set (3) to ( (2) >> const ) | ( (1) & ~( 0xFFFF >> const ) ). This preserves the const most-significant bits from (1), while inserting the ( 16 − const ) most-significant bits from (2) into the least-significant bits of (3). The shift amount is limited to 1 ≤ const ≤ 16.
512-bit SVE
For each 16-bit unsigned integer set (3) to ( (2) >> const ) | ( (1) & ~( 0xFFFF >> const ) ). This preserves the const most-significant bits from (1), while inserting the ( 16 − const ) most-significant bits from (2) into the least-significant bits of (3). The shift amount is limited to 1 ≤ const ≤ 16.
Larger sizes
1024-bit SVE
For each 16-bit unsigned integer set (3) to ( (2) >> const ) | ( (1) & ~( 0xFFFF >> const ) ). This preserves the const most-significant bits from (1), while inserting the ( 16 − const ) most-significant bits from (2) into the least-significant bits of (3). The shift amount is limited to 1 ≤ const ≤ 16.
2048-bit SVE
For each 16-bit unsigned integer set (3) to ( (2) >> const ) | ( (1) & ~( 0xFFFF >> const ) ). This preserves the const most-significant bits from (1), while inserting the ( 16 − const ) most-significant bits from (2) into the least-significant bits of (3). The shift amount is limited to 1 ≤ const ≤ 16.
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.