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simd numeric intrinsics: share code with scalar intrinsic

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This commit is contained in:
Ralf Jung 2023-12-05 07:42:13 +01:00
parent ff95f8b872
commit 1fa8fd800f
1 changed files with 1 additions and 12 deletions
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13
src/tools/miri/src/shims/intrinsics/simd.rs
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@ -115,18 +115,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
}
}
Op::Numeric(name) => {
assert!(op.layout.ty.is_integral());
let size = op.layout.size;
let bits = op.to_scalar().to_bits(size).unwrap();
let extra = 128u128.checked_sub(u128::from(size.bits())).unwrap();
let bits_out = match name {
sym::ctlz => u128::from(bits.leading_zeros()).checked_sub(extra).unwrap(),
sym::cttz => u128::from((bits << extra).trailing_zeros()).checked_sub(extra).unwrap(),
sym::bswap => (bits << extra).swap_bytes(),
sym::bitreverse => (bits << extra).reverse_bits(),
_ => unreachable!(),
};
Scalar::from_uint(bits_out, size)
this.numeric_intrinsic(name, op.to_scalar(), op.layout)?
}
};
this.write_scalar(val, &dest)?;