GRIN

The name GRIN is short for Graph Reduction Intermediate Notation, and it is an intermediate language for graph reduction. For an overview read The GRIN Project article. To grasp the details take your time and read Urban Boquist's PhD thesis on Code Optimisation Techniques for Lazy Functional Languages .
Also check the performance benchmark.

Simplifying Transformations

Transformation	Schema
vectorisation source code: Vectorisation2.hs
case simplification source code: CaseSimplification.hs
split fetch operation source code: SplitFetch.hs
right hoist fetch operation source code: RightHoistFetch2.hs
register introduction source code: RegisterIntroduction.hs

Optimising Transformations

Transformation	Schema
evaluated case elimination source code: EvaluatedCaseElimination.hs
trivial case elimination source code: TrivialCaseElimination.hs
sparse case optimisation source code: SparseCaseOptimisation.hs
update elimination source code: UpdateElimination.hs
copy propagation source code: CopyPropagation.hs
late inlining source code: Inlining.hs
generalised unboxing source code: TODO
arity raising source code: TODO
case copy propagation source code: CaseCopyPropagation.hs
case hoisting source code: TODO
whnf update elimination source code: TODO
common sub-expression elimination source code: CSE.hs
constant propagation source code: ConstantPropagation.hs
dead procedure elimination source code: DeadProcedureElimination.hs
dead variable elimination source code: DeadVariableElimination.hs
dead parameter elimination source code: TODO