task-44 - Specializer-M-cranelift-codegen-backend-behind-the-same-interface.md

id	TASK-44
title	Specializer M-cranelift: codegen backend behind the same interface
status	To Do
assignee
created_date	2026-07-25 02:31
labels
milestone	m-7
dependencies	TASK-43
documentation	docs/superpowers/specs/2026-07-25-sql-specializer-design.md
type	feature
ordinal	38000

Description

Cranelift-jit backend for the imperative IR (design doc §7; cranelift-jit 0.126 spike-verified on x86_64-pc-windows-msvc 2026-07-25). StaticRef handles resolve to absolute addresses of prepare-time structures owned by the compiled artifact. Interpreter-vs-cranelift differential on random IR programs plus the full corpus; first ns/call numbers per the measurement discipline (design doc §10).

Acceptance Criteria

• #1 Every v0-subset prepared query compiles under cranelift and agrees with the interpreter backend on the corpus and on randomized inputs
• #2 Uncovered ops fall back to the interpreter backend rather than failing prepare
• #3 p50/p99 ns/call reported at n in {1, 8, 64, 1024} against the interpreter control and the existing native + codegen engines
• #4 mise gate-specializer green