TILEZERO—Zero Tile

Opcode/Instruction Op/En 64/32 bit Mode Support CPUID Feature Flag Description
VEX.128.F2.0F38.W0 49 11:rrr:000 TILEZERO tmm1 A V/N.E. AMX-TILE Zero the destination tile.

Instruction Operand Encoding

Op/En Tuple Operand 1 Operand 2 Operand 3 Operand 4
A N/A ModRM:reg (w) N/A N/A N/A

Description

This instruction zeroes the destination tile.

Any attempt to execute the TILEZERO instruction inside an Intel TSX transaction will result in a transaction abort.

Operation

TILEZERO tdest
nbytes := palette_table[palette_id].bytes_per_row
for i in 0 ... palette_table[palette_id].max_rows-1:
    for j in 0 ... nbytes-1:
         tdest.row[i].byte[j] := 0
zero_tilecfg_start()

Intel C/C++ Compiler Intrinsic Equivalent

TILEZERO void _tile_zero(__tile dst);

Flags Affected

None.

Exceptions

AMX-E5; see Section 2.10, “Intel® AMX Instruction Exception Classes,” for details.