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Regalloc: remove the transient LiveRangeContext data structure;

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This commit is contained in:
Benjamin Bouvier
2019-09-12 19:32:43 +02:00
parent b9b1c842e9
commit 5beb10e77a
10 changed files with 108 additions and 143 deletions
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7
cranelift/codegen/src/regalloc/spilling.rs
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@@ -319,17 +319,18 @@ impl<'a> Context<'a> {
for (idx, (op, &arg)) in constraints.ins.iter().zip(args).enumerate() {
let mut reguse = RegUse::new(arg, idx, op.regclass.into());
let lr = &self.liveness[arg];
let ctx = self.liveness.context(&self.cur.func.layout);
match op.kind {
ConstraintKind::Stack => continue,
ConstraintKind::FixedReg(_) => reguse.fixed = true,
ConstraintKind::Tied(_) => {
// A tied operand must kill the used value.
reguse.tied = !lr.killed_at(inst, ebb, ctx);
reguse.tied =
!lr.killed_at(inst, ebb, self.liveness.forest(), &self.cur.func.layout);
}
ConstraintKind::FixedTied(_) => {
reguse.fixed = true;
reguse.tied = !lr.killed_at(inst, ebb, ctx);
reguse.tied =
!lr.killed_at(inst, ebb, self.liveness.forest(), &self.cur.func.layout);
}
ConstraintKind::Reg => {}
}