10 lines
503 B
Markdown
10 lines
503 B
Markdown
# ISLE: Instruction Selection / Lowering Expressions
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ISLE is a domain specific language (DSL) for instruction selection and lowering
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clif instructions to vcode's `MachInst`s in Cranelift.
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ISLE is a statically-typed term-rewriting language. You define rewriting rules
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that map input terms (clif instructions) into output terms (`MachInst`s). These
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rules get compiled down into Rust source test that uses a tree of `match`
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expressions that is as good or better than what you would have written by hand.
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