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fixing the buggg, finally

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This commit is contained in:
Jakub Doka 2024-11-22 21:01:45 +01:00
parent 4a857d2317
commit 0aa355695a
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GPG key ID: C6E9A89936B8C143
1 changed files with 28 additions and 4 deletions
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32
lang/src/son/hbvm/regalloc.rs
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@ -9,7 +9,11 @@ use {
PLoc, Sig, Types,
},
alloc::{borrow::ToOwned, vec::Vec},
core::{mem, ops::Range},
core::{
mem,
ops::{Range, RangeBounds},
usize,
},
hbbytecode::{self as instrs},
};
@ -37,9 +41,13 @@ impl HbvmBackend {
self.emit(instrs::st(reg::RET_ADDR + tail as u8, reg::STACK_PTR, 0, 0));
}
res.node_to_reg[MEM as usize] = res.bundles.len() as u8 + 1;
if let Some(PLoc::Ref(..)) = tys.parama(sig.ret).0 {
res.node_to_reg[MEM as usize] = res.bundles.len() as u8 + 1;
res.bundles.push(Bundle::new(0));
}
let reg_offset = if tail { reg::RET + 12 } else { reg::RET_ADDR + 1 };
let bundle_count = res.bundles.len() + (reg_offset as usize);
res.node_to_reg.iter_mut().filter(|r| **r != 0).for_each(|r| {
if *r == u8::MAX {
@ -52,6 +60,11 @@ impl HbvmBackend {
}
});
debug_assert!(!res
.node_to_reg
.iter()
.any(|&a| a == reg::RET_ADDR || (reg::RET..reg_offset - 1).contains(&a)));
let atr = |allc: Nid| {
let allc = strip_load(allc);
debug_assert_eq!(
@ -298,11 +311,22 @@ impl HbvmBackend {
self.ralloc = res;
let bundle_count = self.ralloc.bundles.len() + (reg_offset as usize);
debug_assert!(bundle_count < reg::STACK_PTR as usize, "TODO: spill memory");
debug_assert_eq!(
self.ralloc
.node_to_reg
.iter()
.filter(|&&r| r
> (bundle_count as u8
+ (tail && bundle_count > (reg::RET_ADDR) as usize) as u8))
.copied()
.collect::<Vec<_>>(),
vec![],
"{bundle_count}"
);
(
if tail {
bundle_count.saturating_sub((reg::RET_ADDR - 1) as _)
bundle_count.saturating_sub(reg::RET_ADDR as _)
} else {
self.ralloc.bundles.len()
},