twill-codegen crate + Cranelift JIT skeleton #80

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opened 2026-10-04 02:37:21 +00:00 by jacksonopp · 0 comments

jacksonopp commented

2026-10-04 02:37:21 +00:00

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Depends on #1 only insofar as it doesn't touch Twill's AST at all yet - this issue is purely "does Cranelift work on this machine/toolchain."

Add a new twill-codegen crate to the workspace.
Wire up cranelift-codegen, cranelift-frontend, cranelift-jit, cranelift-module.
Prove the absolute minimum: hand-build a Cranelift IR function (e.g. one that just returns a constant Int), JIT-compile it, and call it from Rust, asserting the returned value.

No connection to Twill's parser/checker/HIR yet - this isolates toolchain setup from lowering correctness, so failures in later issues are unambiguously about our own lowering, not the Cranelift integration itself.

Depends on #1 only insofar as it doesn't touch Twill's AST at all yet - this issue is purely "does Cranelift work on this machine/toolchain." - Add a new `twill-codegen` crate to the workspace. - Wire up `cranelift-codegen`, `cranelift-frontend`, `cranelift-jit`, `cranelift-module`. - Prove the absolute minimum: hand-build a Cranelift IR function (e.g. one that just returns a constant `Int`), JIT-compile it, and call it from Rust, asserting the returned value. No connection to Twill's parser/checker/HIR yet - this isolates toolchain setup from lowering correctness, so failures in later issues are unambiguously about our own lowering, not the Cranelift integration itself.

jacksonopp added this to the Vertical Slice: Minimal End-to-End Backend milestone

2026-10-04 02:37:21 +00:00

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2026-10-04 02:37:21 +00:00