Instruction Compression

• Embedded Processors often put a premium on code size

  • Uncompressed VLIW instructions are wide (of course!)

Opc Dst Src1 Src2

Opc Dst Src1 Src2

Opc Dst Src1 Src2

Opc Dst Src1 Src2

Operation 1

Operation 2

Operation 3

Operation 4

• How we reduce word length?
  • NOPs are common, use only a few bits (2-3) to represent a NOP

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