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Add an assertion in const eval

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This commit is contained in:
Maybe Waffle 2024-04-16 11:56:21 +00:00
parent e4a854e495
commit 7ce867f552
1 changed files with 8 additions and 2 deletions
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10
compiler/rustc_const_eval/src/interpret/intrinsics.rs
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@ -488,8 +488,14 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
}
sym::ctlz | sym::ctlz_nonzero => u128::from(bits.leading_zeros()) - extra,
sym::cttz | sym::cttz_nonzero => u128::from((bits << extra).trailing_zeros()) - extra,
sym::bswap => (bits << extra).swap_bytes(),
sym::bitreverse => (bits << extra).reverse_bits(),
sym::bswap => {
assert_eq!(layout, ret_layout);
(bits << extra).swap_bytes()
}
sym::bitreverse => {
assert_eq!(layout, ret_layout);
(bits << extra).reverse_bits()
}
_ => bug!("not a numeric intrinsic: {}", name),
};
Ok(Scalar::from_uint(bits_out, ret_layout.size))