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Merge pull request #3362 from dheaton-arm/implement-unarrow

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Implement `Unarrow`, `Uunarrow`, and `Snarrow` for the interpreter
This commit is contained in:
Chris Fallin
2021-09-21 10:06:46 -07:00
committed by GitHub
parent e0bd4bd007 3fc29f5f6c
commit 38728c5746
9 changed files with 166 additions and 10 deletions
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25
cranelift/interpreter/src/value.rs
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@@ -26,6 +26,9 @@ pub trait Value: Clone + From<DataValue> {
fn convert(self, kind: ValueConversionKind) -> ValueResult<Self>;
fn concat(self, other: Self) -> ValueResult<Self>;
fn max(self, other: Self) -> ValueResult<Self>;
fn min(self, other: Self) -> ValueResult<Self>;
// Comparison.
fn eq(&self, other: &Self) -> ValueResult<bool>;
fn gt(&self, other: &Self) -> ValueResult<bool>;
@@ -313,11 +316,17 @@ impl Value for DataValue {
Self::from_integer(extracted, ty)?
}
ValueConversionKind::SignExtend(ty) => match (self, ty) {
(DataValue::U8(n), types::I16) => DataValue::U16(n as u16),
(DataValue::U8(n), types::I32) => DataValue::U32(n as u32),
(DataValue::U8(n), types::I64) => DataValue::U64(n as u64),
(DataValue::I8(n), types::I16) => DataValue::I16(n as i16),
(DataValue::I8(n), types::I32) => DataValue::I32(n as i32),
(DataValue::I8(n), types::I64) => DataValue::I64(n as i64),
(DataValue::U16(n), types::I32) => DataValue::U32(n as u32),
(DataValue::U16(n), types::I64) => DataValue::U64(n as u64),
(DataValue::I16(n), types::I32) => DataValue::I32(n as i32),
(DataValue::I16(n), types::I64) => DataValue::I64(n as i64),
(DataValue::U32(n), types::I64) => DataValue::U64(n as u64),
(DataValue::I32(n), types::I64) => DataValue::I64(n as i64),
(DataValue::I64(n), types::I128) => DataValue::I128(n as i128),
(dv, _) => unimplemented!("conversion: {} -> {:?}", dv.ty(), kind),
@@ -376,6 +385,22 @@ impl Value for DataValue {
}
}
fn max(self, other: Self) -> ValueResult<Self> {
if Value::gt(&self, &other)? {
Ok(self)
} else {
Ok(other)
}
}
fn min(self, other: Self) -> ValueResult<Self> {
if Value::lt(&self, &other)? {
Ok(self)
} else {
Ok(other)
}
}
fn eq(&self, other: &Self) -> ValueResult<bool> {
comparison_match!(PartialEq::eq[&self, &other]; [I8, I16, I32, I64, I128, U8, U16, U32, U64, U128, F32, F64])
}