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Add Scalar::to_(u|i)16 methods #67604

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merged 2 commits into from
Dec 28, 2019
Merged

Add Scalar::to_(u|i)16 methods #67604

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415ecc8
Add Scalar::to_(u|i)16 methods
pvdrz Dec 25, 2019
dfcc44d
rewrite scalar to integer methods
pvdrz Dec 25, 2019
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13 changes: 13 additions & 0 deletions src/librustc/mir/interpret/value.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -421,6 +421,12 @@ impl<'tcx, Tag> Scalar<Tag> {
Ok(b as u8)
}

pub fn to_u16(self) -> InterpResult<'static, u16> {
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let sz = Size::from_bits(16);
let b = self.to_bits(sz)?;
Ok(b as u16)
}

pub fn to_u32(self) -> InterpResult<'static, u32> {
let sz = Size::from_bits(32);
let b = self.to_bits(sz)?;
Expand All @@ -445,6 +451,13 @@ impl<'tcx, Tag> Scalar<Tag> {
Ok(b as i8)
}

pub fn to_i16(self) -> InterpResult<'static, i16> {
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let sz = Size::from_bits(16);
let b = self.to_bits(sz)?;
let b = sign_extend(b, sz) as i128;
Ok(b as i16)
}

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pub fn to_i32(self) -> InterpResult<'static, i32> {
let sz = Size::from_bits(32);
let b = self.to_bits(sz)?;
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