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fixing another problem with rescheduling

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This commit is contained in:
Jakub Doka 2024-11-13 08:49:25 +01:00
parent 0d87bf8f09
commit 3c86eafe72
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GPG key ID: C6E9A89936B8C143
7 changed files with 108 additions and 39 deletions
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13
lang/README.md
View file

@ -1465,6 +1465,19 @@ main := fn(): uint {
}
```
#### global_variable_wiredness
```hb
ports := false
inb := fn(): uint return 0
main := fn(): void {
if ports {
ports = inb() == 0x0
}
}
```
### Just Testing Optimizations
#### null_check_test

1
lang/src/son.rs
View file

@ -4874,6 +4874,7 @@ mod tests {
writing_into_string;
request_page;
tests_ptr_to_ptr_copy;
global_variable_wiredness;
// Just Testing Optimizations;
const_folding_with_arg;

65
lang/src/son/hbvm.rs
View file

@ -236,7 +236,12 @@ impl Backend for HbvmBackend {
if !matches!(nodes[stck].kind, Kind::Stck | Kind::Arg) {
debug_assert_matches!(
nodes[stck].kind,
Kind::Phi | Kind::Return | Kind::Load | Kind::Call { .. } | Kind::Stre
Kind::Phi
| Kind::Return
| Kind::Load
| Kind::Call { .. }
| Kind::Stre
| Kind::Join
);
continue;
}
@ -334,40 +339,18 @@ impl Backend for HbvmBackend {
impl Nodes {
fn reschedule_block(&mut self, from: Nid, outputs: &mut Vc) {
// NOTE: this code is horible
let from = Some(&from);
let fromc = Some(&from);
let mut buf = Vec::with_capacity(outputs.len());
let mut seen = BitSet::default();
seen.clear(self.values.len());
for &o in outputs.iter() {
if !self.is_cfg(o) {
continue;
}
seen.set(o);
let mut cursor = buf.len();
buf.push(o);
while let Some(&n) = buf.get(cursor) {
for &i in &self[n].inputs[1..] {
if from == self[i].inputs.first()
&& self[i]
.outputs
.iter()
.all(|&o| self[o].inputs.first() != from || seen.get(o))
&& seen.set(i)
if (!self.is_cfg(o)
&& self[o].outputs.iter().any(|&oi| {
self[oi].kind != Kind::Phi && self[oi].inputs.first() == fromc && !seen.get(oi)
}))
|| !seen.set(o)
{
for &o in outputs.iter().filter(|&&n| n == i) {
buf.push(o);
}
}
}
cursor += 1;
}
}
for &o in outputs.iter() {
if !seen.set(o) {
continue;
}
let mut cursor = buf.len();
@ -376,11 +359,12 @@ impl Nodes {
}
while let Some(&n) = buf.get(cursor) {
for &i in &self[n].inputs[1..] {
if from == self[i].inputs.first()
&& self[i]
.outputs
.iter()
.all(|&o| self[o].inputs.first() != from || seen.get(o))
if fromc == self[i].inputs.first()
&& self[i].outputs.iter().all(|&o| {
self[o].kind == Kind::Phi
|| self[o].inputs.first() != fromc
|| seen.get(o)
})
&& seen.set(i)
{
for &o in outputs.iter().filter(|&&n| n == i) {
@ -392,7 +376,18 @@ impl Nodes {
}
}
buf.sort_by_key(|&n| !self.is_cfg(n));
debug_assert_eq!(
outputs.iter().filter(|&&n| !seen.get(n)).copied().collect::<Vec<_>>(),
vec![],
"{:?} {from:?} {:?}",
outputs
.iter()
.filter(|&&n| !seen.get(n))
.copied()
.map(|n| (n, &self[n]))
.collect::<Vec<_>>(),
self[from]
);
if outputs.len() != buf.len() {
panic!("{:?} {:?}", outputs, buf);

23
lang/tests/son_tests_global_variable_wiredness.txt Normal file
View file

@ -0,0 +1,23 @@
inb:
LI64 r1, 0d
JALA r0, r31, 0a
main:
ADDI64 r254, r254, -40d
ST r31, r254, 0a, 40h
LRA r32, r0, :ports
LD r33, r32, 0a, 1h
ANDI r33, r33, 255d
JNE r33, r0, :0
JMP :1
0: JAL r31, r0, :inb
LI64 r34, 0d
CMPU r35, r1, r34
CMPUI r35, r35, 0d
NOT r35, r35
ST r35, r32, 0a, 1h
1: LD r31, r254, 0a, 40h
ADDI64 r254, r254, 40d
JALA r0, r31, 0a
code size: 178
ret: 0
status: Ok(())

8
lang/tests/son_tests_storing_into_nullable_struct.txt
View file

@ -50,18 +50,20 @@ optional:
JALA r0, r31, 0a
optionala:
ADDI64 r254, r254, -48d
ADDI64 r5, r254, 0d
ADDI64 r5, r254, 8d
ADDI64 r4, r254, 16d
ST r5, r254, 16a, 8h
LI64 r9, 1d
ST r9, r254, 24a, 8h
ADDI64 r12, r254, 8d
ADDI64 r12, r254, 0d
ST r12, r254, 32a, 8h
LI64 r11, 0d
ST r11, r254, 0a, 8h
ST r11, r254, 8a, 8h
ST r11, r254, 40a, 8h
BMC r4, r1, 32h
ADDI64 r254, r254, 48d
JALA r0, r31, 0a
code size: 577
code size: 603
ret: 100
status: Ok(())

35
lang/tests/son_tests_triggering_store_in_divergent_branch.txt
View file

@ -0,0 +1,35 @@
main:
ADDI64 r254, r254, -72d
ST r31, r254, 0a, 72h
LI8 r32, 0b
LI64 r33, 65536d
LI8 r34, 1b
LI64 r35, 0d
CP r36, r35
7: JAL r31, r0, :opaque
JLTU r36, r1, :0
JMP :1
0: CP r37, r35
8: JAL r31, r0, :opaque
JLTU r37, r1, :2
CP r38, r34
JMP :3
2: JNE r37, r33, :4
CP r38, r32
3: ANDI r39, r38, 255d
JNE r39, r35, :5
JMP :6
5: ADDI64 r36, r36, 1d
6: JMP :7
4: ADDI64 r37, r37, 1d
JMP :8
1: LD r31, r254, 0a, 72h
ADDI64 r254, r254, 72d
JALA r0, r31, 0a
opaque:
LI64 r1, 2147483648d
JALA r0, r31, 0a
timed out
code size: 218
ret: 2147483648
status: Ok(())

0
offense.hb Normal file
View file