assembly - out-of-order execution dependancy and jump -

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i have difficulties understand how "out-of-order" work on cpu.

let me take 1 example :

cpuid mov %rax,(%rbx)

is possible mov instruction executed before cpuid instruction? think not possible because of dependency(cpuid write inside rax) i'm not sure. or maybe possible , there make correction reordering? how cpu detects dependency? during decode stage?

what happen if there instruction depending on other 1 , these 2 instructions separated lot of independant instructions example below:

cpuid ;a lot of instruction here doesn't affect rax register mov %rax,(%rbx)

let me take other example :

jmp 1 jmp 2 one:     instructions here    jmp 0 two:     other instructions there can depends of instructions inside label called 'one'

can jmp two executed before jmp one?


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