MOV (immediate, predicated, merging)
Move signed integer immediate to vector elements (merging).
Move a signed integer immediate to each active element in the destination vector. Inactive elements in the destination vector register remain unmodified.
The immediate operand is a signed value in the range -128 to +127, and for element widths of 16 bits or higher it may also be a signed multiple of 256 in the range -32768 to +32512 (excluding 0).
The immediate is encoded in 8 bits with an optional left shift by 8. The preferred disassembly when the shift option is specified is "#<simm8>, LSL #8". However an assembler and disassembler may also allow use of the shifted 16-bit value unless the immediate is 0 and the shift amount is 8, which must be unambiguously described as "#0, LSL #8".
This is an alias of CPY (immediate, merging). This means:
- The encodings in this description are named to match the encodings of CPY (immediate, merging).
- The description of CPY (immediate, merging) gives the operational pseudocode for this instruction.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | size | 0 | 1 | Pg | 0 | 1 | sh | imm8 | Zd | |||||||||||||||
M |
MOV <Zd>.<T>, <Pg>/M, #<imm>{, <shift>}
is equivalent to
CPY <Zd>.<T>, <Pg>/M, #<imm>{, <shift>}
and is always the preferred disassembly.
Assembler Symbols
<Zd> |
Is the name of the destination scalable vector register, encoded in the "Zd" field. |
<T> |
Is the size specifier,
encoded in
size:
|
<Pg> |
Is the name of the governing scalable predicate register, encoded in the "Pg" field. |
<imm> |
Is a signed immediate in the range -128 to 127, encoded in the "imm8" field. |
<shift> |
Is the optional left shift to apply to the immediate, defaulting to LSL #0 and
encoded in
sh:
|
Operation
The description of CPY (immediate, merging) gives the operational pseudocode for this instruction.
Operational information
This instruction might be immediately preceded in program order by a MOVPRFX instruction. The MOVPRFX instruction must conform to all of the following requirements, otherwise the behavior of the MOVPRFX and this instruction is unpredictable:
- The MOVPRFX instruction must be unpredicated, or be predicated using the same governing predicate register and source element size as this instruction.
- The MOVPRFX instruction must specify the same destination register as this instruction.
- The destination register must not refer to architectural register state referenced by any other source operand register of this instruction.