SVE Instruction List by Dougall Johnson
SXTB, SXTH, SXTW: Signed byte / halfword / word extend (predicated)
SXTH Zd.S, Pg/Z, Zn.S (SVE2.2 (SME2.2
128-bit SVE
For each 32-bit value integer set (2) to ( (1) & 0x7FFF ) − ( (1) & 0x8000 ). This takes the low 16-bits of (1), and sign-extends it to 32-bit.
256-bit SVE
For each 32-bit value integer set (2) to ( (1) & 0x7FFF ) − ( (1) & 0x8000 ). This takes the low 16-bits of (1), and sign-extends it to 32-bit.
512-bit SVE
For each 32-bit value integer set (2) to ( (1) & 0x7FFF ) − ( (1) & 0x8000 ). This takes the low 16-bits of (1), and sign-extends it to 32-bit.
Larger sizes
1024-bit SVE
For each 32-bit value integer set (2) to ( (1) & 0x7FFF ) − ( (1) & 0x8000 ). This takes the low 16-bits of (1), and sign-extends it to 32-bit.
2048-bit SVE
For each 32-bit value integer set (2) to ( (1) & 0x7FFF ) − ( (1) & 0x8000 ). This takes the low 16-bits of (1), and sign-extends it to 32-bit.
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.