1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
use std::sync::Arc;
use vyre_foundation::ir::model::expr::{GeneratorRef, Ident};
use vyre_foundation::ir::{Expr, Node};
use super::layout::OP_ID;
use crate::graph::program_graph::{
ProgramGraphShape, NAME_EDGE_KIND_MASK, NAME_EDGE_OFFSETS, NAME_EDGE_TARGETS,
};
/// Build one in-place forward expansion pass over an accumulating frontier.
#[must_use]
pub fn csr_forward_or_changed_body(
shape: ProgramGraphShape,
frontier_out: &str,
changed_var: &str,
edge_kind_mask: u32,
) -> Vec<Node> {
csr_forward_or_changed_body_prefixed(shape, frontier_out, changed_var, edge_kind_mask, "")
}
fn local(prefix: &str, name: &str) -> String {
if prefix.is_empty() {
name.to_string()
} else {
format!("{prefix}_{name}")
}
}
/// Build one traversal pass with caller-provided local-name prefixing for
/// repeated inlining under validators that disallow shadowing.
#[must_use]
pub fn csr_forward_or_changed_body_prefixed(
shape: ProgramGraphShape,
frontier_out: &str,
changed_var: &str,
edge_kind_mask: u32,
prefix: &str,
) -> Vec<Node> {
let src = local(prefix, "src");
let word_idx = local(prefix, "word_idx");
let bit_mask = local(prefix, "bit_mask");
let src_word = local(prefix, "src_word");
let edge_start = local(prefix, "edge_start");
let edge_end = local(prefix, "edge_end");
let edge_iter = local(prefix, "e");
let kind_mask = local(prefix, "kind_mask");
let dst = local(prefix, "dst");
let dst_word_idx = local(prefix, "dst_word_idx");
let dst_bit = local(prefix, "dst_bit");
let old = local(prefix, "old");
let per_source = vec![
Node::let_bind(
word_idx.as_str(),
Expr::shr(Expr::var(src.as_str()), Expr::u32(5)),
),
Node::let_bind(
bit_mask.as_str(),
Expr::shl(
Expr::u32(1),
Expr::bitand(Expr::var(src.as_str()), Expr::u32(31)),
),
),
Node::let_bind(
src_word.as_str(),
Expr::load(frontier_out, Expr::var(word_idx.as_str())),
),
Node::if_then(
Expr::ne(
Expr::bitand(Expr::var(src_word.as_str()), Expr::var(bit_mask.as_str())),
Expr::u32(0),
),
vec![
Node::let_bind(
edge_start.as_str(),
Expr::load(NAME_EDGE_OFFSETS, Expr::var(src.as_str())),
),
Node::let_bind(
edge_end.as_str(),
Expr::load(
NAME_EDGE_OFFSETS,
Expr::add(Expr::var(src.as_str()), Expr::u32(1)),
),
),
Node::loop_for(
edge_iter.as_str(),
Expr::var(edge_start.as_str()),
Expr::var(edge_end.as_str()),
vec![
Node::let_bind(
kind_mask.as_str(),
Expr::load(NAME_EDGE_KIND_MASK, Expr::var(edge_iter.as_str())),
),
Node::if_then(
Expr::ne(
Expr::bitand(
Expr::var(kind_mask.as_str()),
Expr::u32(edge_kind_mask),
),
Expr::u32(0),
),
vec![
Node::let_bind(
dst.as_str(),
Expr::load(NAME_EDGE_TARGETS, Expr::var(edge_iter.as_str())),
),
Node::if_then(
Expr::lt(Expr::var(dst.as_str()), Expr::u32(shape.node_count)),
vec![
Node::let_bind(
dst_word_idx.as_str(),
Expr::shr(Expr::var(dst.as_str()), Expr::u32(5)),
),
Node::let_bind(
dst_bit.as_str(),
Expr::shl(
Expr::u32(1),
Expr::bitand(
Expr::var(dst.as_str()),
Expr::u32(31),
),
),
),
Node::let_bind(
old.as_str(),
Expr::atomic_or(
frontier_out,
Expr::var(dst_word_idx.as_str()),
Expr::var(dst_bit.as_str()),
),
),
Node::if_then(
Expr::eq(
Expr::bitand(
Expr::var(old.as_str()),
Expr::var(dst_bit.as_str()),
),
Expr::u32(0),
),
vec![Node::assign(changed_var, Expr::u32(1))],
),
],
),
],
),
],
),
],
),
];
vec![Node::if_then(
Expr::eq(Expr::local_x(), Expr::u32(0)),
vec![Node::loop_for(
src.as_str(),
Expr::u32(0),
Expr::u32(shape.node_count),
per_source,
)],
)]
}
/// Wrap one traversal pass as a child Region of `parent_op_id`.
#[must_use]
pub fn csr_forward_or_changed_child(
parent_op_id: &str,
shape: ProgramGraphShape,
frontier_out: &str,
changed_var: &str,
edge_kind_mask: u32,
) -> Node {
csr_forward_or_changed_child_prefixed(
parent_op_id,
shape,
frontier_out,
changed_var,
edge_kind_mask,
"",
)
}
/// Wrap a traversal pass with a local-name prefix for repeated inlining.
#[must_use]
pub fn csr_forward_or_changed_child_prefixed(
parent_op_id: &str,
shape: ProgramGraphShape,
frontier_out: &str,
changed_var: &str,
edge_kind_mask: u32,
local_prefix: &str,
) -> Node {
Node::Region {
generator: Ident::from(OP_ID),
source_region: Some(GeneratorRef {
name: parent_op_id.to_string(),
}),
body: Arc::new(csr_forward_or_changed_body_prefixed(
shape,
frontier_out,
changed_var,
edge_kind_mask,
local_prefix,
)),
}
}