FA-11463 / Compiler transformation correctness / Member archive
Loop invariant motion speculates a trapping operation on a zero-trip loop · case 03
Loop invariant motion speculates a trapping operation on a zero-trip loop.
Case contract
Return whether an operation may hoist: invariant and (safe to speculate or guaranteed executed by this loop).
Why this case matters
A deterministic miniature compiler-pass model; inputs are explicit IR facts, not a production compiler.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| zero-trip trapping | true | false | Failed |
MEMBER ARCHIVE
The complete case is available to members.
This record includes three runnable implementations, regression fixtures, execution results, and source hashes.
Member access is invitation-based. Sign in with your invited account to inspect the sources.
Sign in to the archive ↗