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Implement UwidenLow and UwidenHigh for the interpreter

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Implemented `UwidenLow` and `UwidenHigh` for the Cranelift interpreter,
doubling the width and halving the number of lanes preserving the low
and high halves respectively. Conversions are performed using unsigned
zero extension.

Copyright (c) 2021, Arm Limited
This commit is contained in:
dheaton-arm
2021-09-03 12:55:31 +01:00
parent 164835ecf5
commit f7a1b3f9bd
4 changed files with 79 additions and 2 deletions
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5
cranelift/interpreter/src/value.rs
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@@ -290,9 +290,14 @@ impl Value for DataValue {
_ => unimplemented!("conversion: {} -> {:?}", self.ty(), kind),
},
ValueConversionKind::ZeroExtend(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 u8 as i16),
(DataValue::I8(n), types::I32) => DataValue::I32(n as u8 as i32),
(DataValue::I8(n), types::I64) => DataValue::I64(n as u8 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 u16 as i32),
(DataValue::I16(n), types::I64) => DataValue::I64(n as u16 as i64),
(DataValue::U32(n), types::I64) => DataValue::U64(n as u64),