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1. General purpose language syntactically like RATFOR
semantically like C
. Lacks structures and pointers. Used
as a source language for Jack W. Davidson and Christopher
W. Fraser's peephole optimiser which inspired GCC RTL
other optimisation ideas.
during the early 80's, totally unsupported.
["The Y Programming Language", D.R. Hanson, SIGPLAN Notices
16(2):59-68 (Feb 1981)].
[Jack W. Davidson and Christopher W. Fraser, "The Design and
Application of a Retargetable Peephole Optimiser", TOPLAS,
[Jack W. Davidson, "Simplifying Code Through Peephole
Optimisation" Technical Report TR81-19, The University of
Arizona, Tucson, AZ, 1981].
[Jack W. Davidson and Christopher W. Fraser, "Register
Allocation and Exhaustive Peephole Optimisation"
Software-Practice and Experience, Sep. 1984].