irwalk

Overview ¶

Package irwalk provides the nil-guarded gIR traversal iterators shared by the analysis passes, the frontends' whole-program rewrites, and converter tests. Use them instead of hand-writing the four-deep `module → function → block → instruction` nest, where a pass can silently forget a nil check.

These are range-over-func iterators, so `continue`/`break`/`return` behaves as in a plain loop. Every consumer runs ONCE per scan, so the per-element closure call is not hot; the engine's per-(function × rule) inner loops are deliberately left as hand-written loops.