← All reports

AMD64 architecture lacks a dedicated instruction for reversing the bits in a register.

Computer ArchitectureInstruction Set DesignApr 20, 2026score 0.363 posts · 1 replies across 2 instances
The thread discusses the lack of a specific bit-reversal instruction in AMD64 architecture, highlighting a potential limitation in its instruction set despite its CISC design.

Claims

AMD64 architecture lacks a dedicated instruction for reversing the bits in a register.
Parent: Computer ArchitectureEntity: AMD64 Instruction SetImpact: negativeDate: Apr 20, 2026Target: AMD64 architecture lacks a dedicated instruction for reversing the bits in a register.

Source posts

@[email protected]
for as CISC-Y as AMD64 is, it still doesn't have just a "reverse the bits in this register" instruction, huh?
0 boosts · 0 favs · 0 replies · Apr 20, 2026
@[email protected]
for as CISC-Y as AMD64 is, it still doesn't have just a "reverse the bits in this register" instruction, huh?
0 boosts · 0 favs · 1 replies · Apr 20, 2026
@[email protected]
for as CISC-Y as AMD64 is, it still doesn't have just a "reverse the bits in this register" instruction, huh?
0 boosts · 0 favs · 0 replies · Apr 20, 2026