Intel "Reference Compiler"

I had heard rumors that Intel provides a "reference compiler" back-end to
third party compiler vendors wishing to target their processors. The idea
being that a reference optimizing code generator could form the nucleus of
a third party back end, or at least serve in the role of demonstrating
instruction schedules for the Intel pipelines.


Having such an article proves increasingly useful with superscalar
architectures, where multiple issue is possible. It also nicely
compliments development tools such as cycle timers or behavioral models.


Can anyone confirm the rumored existence of an Intel-supplied sample
back-end for say a 486 or Pentium? If so (or if you've also heard the
rumor) can you supply additional details/experiences?
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