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make stack work

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This commit is contained in:
nora 2023-12-23 15:31:15 +01:00
parent e28469fcc0
commit 46e5662aab
15 changed files with 122 additions and 117 deletions
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8
codegen/src/registers.rs
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@ -53,7 +53,7 @@ pub struct MachineReg(pub usize);
pub enum RegValue {
/// The SSA register contains an address on the stack.
/// The offset is the offset from the start of the function.
StackRelative { offset: u64 },
StackRelativePtr { offset: u64 },
/// The SSA register resides on the stack as it has been spilled.
/// This should be rather rare in practice.
Spilled { offset: u64 },
@ -65,15 +65,13 @@ pub enum RegValue {
pub struct FunctionLayout {
/// Where a register comes from at a particular usage of a register.
register_uses: FxHashMap<(Location, Register), RegValue>,
total_stack_space: u64,
}
pub fn compute_layout(f: &Func) -> FunctionLayout {
pub fn compute_layout(_f: &Func) -> FunctionLayout {
let register_uses = FxHashMap::default();
FunctionLayout {
register_uses,
total_stack_space: 0,
}
}
@ -102,7 +100,7 @@ impl<'a> ir::pretty::Customizer<'a> for LayoutPrinter<'a> {
match layout {
Some(RegValue::MachineReg(mach)) => write!(f, "reg-{}", mach.0)?,
Some(RegValue::Spilled { offset }) => write!(f, "spill-{offset}")?,
Some(RegValue::StackRelative { offset }) => {
Some(RegValue::StackRelativePtr { offset }) => {
write!(f, "i-forgot-what-this-meant-{offset}")?
}
None => write!(f, "<unknown>")?,