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Simplify an if let Some to a ?

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This commit is contained in:
Oli Scherer 2023-05-31 12:14:30 +00:00
parent 1722aa79ea
commit bd4197cbf9
1 changed files with 10 additions and 13 deletions
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23
compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs
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@ -140,20 +140,17 @@ impl IntRange {
value: mir::ConstantKind<'tcx>,
) -> Option<IntRange> {
let ty = value.ty();
if let Some((target_size, bias)) = Self::integral_size_and_signed_bias(tcx, ty) {
let val = match value {
mir::ConstantKind::Ty(c) if let ty::ConstKind::Value(valtree) = c.kind() => {
valtree.unwrap_leaf().to_bits(target_size).ok()
},
// This is a more general form of the previous case.
_ => value.try_eval_bits(tcx, param_env, ty),
}?;
let (target_size, bias) = Self::integral_size_and_signed_bias(tcx, ty)?;
let val = match value {
mir::ConstantKind::Ty(c) if let ty::ConstKind::Value(valtree) = c.kind() => {
valtree.unwrap_leaf().to_bits(target_size).ok()
},
// This is a more general form of the previous case.
_ => value.try_eval_bits(tcx, param_env, ty),
}?;
let val = val ^ bias;
Some(IntRange { range: val..=val, bias })
} else {
None
}
let val = val ^ bias;
Some(IntRange { range: val..=val, bias })
}
#[inline]