Java Glossary : VLIW

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VLIW: Very Long Instruction Word. Intel is working on a new type of CPU that uses very long instruction words instead of microcode. The instruction words give it hints on branch prediction etc. The processors are very fast, but need recompilation even for different variants of same processor. Its as if you needed a totally different exe file for 80386, 80486, Pentium, and Pentium Pro processors. The Java JIT solves the code distribution problem neatly, since the common JVM class files can be compiled as the last minute into the required VLIW format.

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