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Fix jump table emit

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This commit is contained in:
Rerumu 2021-11-24 00:22:55 -05:00
parent 19922f1a4a
commit 8b52af9651
1 changed files with 7 additions and 7 deletions
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14
src/backend/translator/writer.rs
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@ -30,7 +30,7 @@ fn write_br_gadget(rem: usize, d: &mut Data, w: &mut dyn Write) -> Result<()> {
} }
} }
pub fn list_to_range(list: &[u32]) -> Vec<(Range<usize>, u32)> { pub fn condense_jump_table(list: &[u32]) -> Vec<(usize, usize, u32)> {
let mut result = Vec::new(); let mut result = Vec::new();
let mut index = 0; let mut index = 0;
@ -46,7 +46,7 @@ pub fn list_to_range(list: &[u32]) -> Vec<(Range<usize>, u32)> {
} }
} }
result.push((start..index, list[start])); result.push((start, index - 1, list[start]));
} }
result result
@ -338,14 +338,14 @@ impl BrTable {
self.cond.output(d, w)?; self.cond.output(d, w)?;
write!(w, " ")?; write!(w, " ")?;
for (r, t) in list_to_range(&self.data.table) { for (start, end, dest) in condense_jump_table(&self.data.table) {
if r.len() == 1 { if start == end {
write!(w, "if temp == {} then ", r.start)?; write!(w, "if temp == {} then ", start)?;
} else { } else {
write!(w, "if temp >= {} and temp <= {} then ", r.start, r.end)?; write!(w, "if temp >= {} and temp <= {} then ", start, end)?;
} }
Br::write_at(t, d, w)?; Br::write_at(dest, d, w)?;
write!(w, "else")?; write!(w, "else")?;
} }