calyx_opt/passes/
remove_ids.rs

1use crate::traversal::{Action, Named, VisResult, Visitor};
2use calyx_ir::{self as ir, GetAttributes, LibrarySignatures};
3
4const NODE_ID: ir::Attribute =
5    ir::Attribute::Internal(ir::InternalAttr::NODE_ID);
6const BEGIN_ID: ir::Attribute =
7    ir::Attribute::Internal(ir::InternalAttr::BEGIN_ID);
8const END_ID: ir::Attribute = ir::Attribute::Internal(ir::InternalAttr::END_ID);
9
10#[derive(Default)]
11/// Removes NODE_ID, BEGIN_ID, and END_ID from each control statement
12pub struct RemoveIds;
13
14impl Named for RemoveIds {
15    fn name() -> &'static str {
16        "remove-ids"
17    }
18
19    fn description() -> &'static str {
20        "removes the NODE_ID, BEGIN_ID, and END_ID from the control flow"
21    }
22}
23
24impl Visitor for RemoveIds {
25    fn start(
26        &mut self,
27        comp: &mut ir::Component,
28        _ctx: &LibrarySignatures,
29        _comps: &[ir::Component],
30    ) -> VisResult {
31        remove_ids(&mut comp.control.borrow_mut());
32        Ok(Action::Stop)
33    }
34}
35
36fn remove_ids_static(sc: &mut ir::StaticControl) {
37    let atts = sc.get_mut_attributes();
38    atts.remove(BEGIN_ID);
39    atts.remove(END_ID);
40    atts.remove(NODE_ID);
41    match sc {
42        ir::StaticControl::Empty(_) | ir::StaticControl::Invoke(_) => (),
43        ir::StaticControl::Enable(ir::StaticEnable { group, .. }) => {
44            group.borrow_mut().remove_attribute(NODE_ID)
45        }
46        ir::StaticControl::Repeat(ir::StaticRepeat { body, .. }) => {
47            remove_ids_static(body)
48        }
49        ir::StaticControl::Seq(ir::StaticSeq { stmts, .. })
50        | ir::StaticControl::Par(ir::StaticPar { stmts, .. }) => {
51            for stmt in stmts {
52                remove_ids_static(stmt);
53            }
54        }
55        ir::StaticControl::If(ir::StaticIf {
56            tbranch, fbranch, ..
57        }) => {
58            remove_ids_static(tbranch);
59            remove_ids_static(fbranch);
60        }
61    }
62}
63
64fn remove_ids(c: &mut ir::Control) {
65    let atts = c.get_mut_attributes();
66    atts.remove(BEGIN_ID);
67    atts.remove(END_ID);
68    atts.remove(NODE_ID);
69    match c {
70        ir::Control::Empty(_) | ir::Control::Invoke(_) => (),
71        ir::Control::Enable(ir::Enable { group, .. }) => {
72            group.borrow_mut().remove_attribute(NODE_ID)
73        }
74        ir::Control::While(ir::While { body, .. })
75        | ir::Control::Repeat(ir::Repeat { body, .. }) => {
76            remove_ids(body);
77        }
78        ir::Control::If(ir::If {
79            tbranch, fbranch, ..
80        }) => {
81            remove_ids(tbranch);
82            remove_ids(fbranch);
83        }
84        ir::Control::Seq(ir::Seq { stmts, .. })
85        | ir::Control::Par(ir::Par { stmts, .. }) => {
86            for stmt in stmts {
87                remove_ids(stmt);
88            }
89        }
90        ir::Control::Static(sc) => remove_ids_static(sc),
91        ir::Control::FSMEnable(_) => {
92            todo!("should not encounter fsm nodes")
93        }
94    }
95}
calyx_opt/passes/remove_ids.rs

calyx_opt/passes/
remove_ids.rs
