VFINSERT

Operation

Replaces one indexed vector lane with a floating-point scalar value.

Assembler Syntax

VFINSERT.{H|S|D}(z) Fn(r), Rn(s), Vn(v)

Privilege

Unprivileged

Required CPUID flags

FP

VECTOR

VECTORFP

VFINSERT interprets the scalar index as unsigned and replaces only that lane of Vd. The H, S, and D forms copy the selected floating-point value from Fn and leave FFLAGS unchanged. Every lane at another index retains its previous value.

An index at or above the selected vector element count raises VECTOR_LANE_INDEX_OUT_OF_RANGE. The faulting instruction commits no destination change.

2.75in

Encodings

VFINSERT.{H|S|D}(z) Fn(r), Rn(s), Vn(v)

Format: Instruction format for VFINSERT.{H|S|D}(z) Fn(r), Rn(s), Vn(v)

size — allowed: 0x1..0x3 [reserved_vector_element_type]