22 lines
631 B
Rust
22 lines
631 B
Rust
//! Domtree-based pass.
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use crate::cfg::CFGInfo;
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use crate::ir::{Block, FunctionBody};
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pub trait DomtreePass {
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fn enter(&mut self, _block: Block, _body: &mut FunctionBody) {}
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fn leave(&mut self, _block: Block, _body: &mut FunctionBody) {}
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}
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pub fn dom_pass<P: DomtreePass>(body: &mut FunctionBody, cfg: &CFGInfo, pass: &mut P) {
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visit::<P>(body, cfg, pass, body.entry);
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}
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fn visit<P: DomtreePass>(body: &mut FunctionBody, cfg: &CFGInfo, pass: &mut P, block: Block) {
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pass.enter(block, body);
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for child in cfg.dom_children(block) {
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visit(body, cfg, pass, child);
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}
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pass.leave(block, body);
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}
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