Very Long Instruction Word
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Very Long Instruction Word
(VLIW) Used to describe an assembly language instruction
set implemented using horizontal microcode. A horizontally
encoded instruction word which encodes four or more operations
might be considered "very long".
VLIW architectures are sometimes classified as a type of
static superscalar architecture. They are static in the
sense that which units operate in parallel is determined by
the instruction rather than by dynamic scheduling at run time.
Producing code for VLIW machines is difficult; trace
scheduling is a helpful compiler technique.
The most famous VLIW machine was built by (the late)
Multiflow Computer, Inc.
(1994-11-11)