sb

Speculation Barrier

SB

Prevents speculative execution across the barrier.

Details

The Speculation Barrier instruction prevents speculative execution across the barrier.

Pseudocode Operation

// Prevents speculative execution across the barrier

Example

SB

Encoding

Binary Layout
11010101
000
00011
0011
0000
111
11111
 
Format System Hint
Opcode 0xD50330FF
Extension Base (v8.0+)

Operands